From a44da25aa69a7a3588a33607a8067c87b3b5a68e Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Thu, 2 Sep 2021 10:40:10 +1000 Subject: [PATCH 01/21] target/riscv: Update the ePMP CSR address Update the ePMP CSRs to match the 0.9.3 ePMP spec https://github.com/riscv/riscv-tee/blob/61455747230a26002d741f64879dd78cc9689323/Smepmp/Smepmp.pdf Signed-off-by: Alistair Francis Reviewed-by: Bin Meng Message-id: 28c908de60b9b04fa20e63d113885c98586053f3.1630543194.git.alistair.francis@wdc.com --- target/riscv/cpu.c | 1 + target/riscv/cpu_bits.h | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 13575c1408..d4d5961807 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -599,6 +599,7 @@ static Property riscv_cpu_properties[] = { DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64), DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true), DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true), + /* ePMP 0.9.3 */ DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false), DEFINE_PROP_UINT64("resetvec", RISCVCPU, cfg.resetvec, DEFAULT_RSTVEC), diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 7330ff5a19..ce9dcc030c 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -210,8 +210,8 @@ #define CSR_MTVAL2 0x34b /* Enhanced Physical Memory Protection (ePMP) */ -#define CSR_MSECCFG 0x390 -#define CSR_MSECCFGH 0x391 +#define CSR_MSECCFG 0x747 +#define CSR_MSECCFGH 0x757 /* Physical Memory Protection */ #define CSR_PMPCFG0 0x3a0 #define CSR_PMPCFG1 0x3a1 From 15732b8ed290460334ee58dd25939da733f362fd Mon Sep 17 00:00:00 2001 From: LIU Zhiwei Date: Wed, 1 Sep 2021 20:45:39 +0800 Subject: [PATCH 02/21] target/riscv: Fix satp write These variables should be target_ulong. If truncated to int, the bool conditions they indicate will be wrong. As satp is very important for Linux, this bug almost fails every boot. Signed-off-by: LIU Zhiwei Reviewed-by: Bin Meng Reviewed-by: Alistair Francis Message-id: 20210901124539.222868-1-zhiwei_liu@c-sky.com Signed-off-by: Alistair Francis --- target/riscv/csr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 50a2c3a3b4..ba9818f6a5 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -986,7 +986,7 @@ static RISCVException read_satp(CPURISCVState *env, int csrno, static RISCVException write_satp(CPURISCVState *env, int csrno, target_ulong val) { - int vm, mask, asid; + target_ulong vm, mask, asid; if (!riscv_feature(env, RISCV_FEATURE_MMU)) { return RISCV_EXCP_NONE; From 0f0b70eeecdd4e0f29efe28a7ffec01cbe5c43bf Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Mon, 30 Aug 2021 15:34:20 +1000 Subject: [PATCH 03/21] target/riscv: Expose interrupt pending bits as GPIO lines MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Expose the 12 interrupt pending bits in MIP as GPIO lines. Signed-off-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Reviewed-by: Bin Meng Tested-by: Bin Meng Message-id: 069d6162f0bc2f4a4f5a44e73f6442b11c703c53.1630301632.git.alistair.francis@wdc.com --- target/riscv/cpu.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index d4d5961807..7c626d89cd 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -567,11 +567,41 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) mcc->parent_realize(dev, errp); } +#ifndef CONFIG_USER_ONLY +static void riscv_cpu_set_irq(void *opaque, int irq, int level) +{ + RISCVCPU *cpu = RISCV_CPU(opaque); + + switch (irq) { + case IRQ_U_SOFT: + case IRQ_S_SOFT: + case IRQ_VS_SOFT: + case IRQ_M_SOFT: + case IRQ_U_TIMER: + case IRQ_S_TIMER: + case IRQ_VS_TIMER: + case IRQ_M_TIMER: + case IRQ_U_EXT: + case IRQ_S_EXT: + case IRQ_VS_EXT: + case IRQ_M_EXT: + riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level)); + break; + default: + g_assert_not_reached(); + } +} +#endif /* CONFIG_USER_ONLY */ + static void riscv_cpu_init(Object *obj) { RISCVCPU *cpu = RISCV_CPU(obj); cpu_set_cpustate_pointers(cpu); + +#ifndef CONFIG_USER_ONLY + qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 12); +#endif /* CONFIG_USER_ONLY */ } static Property riscv_cpu_properties[] = { From a714b8aa029c2a6cc0b99a798f4f8b6d4282e711 Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Mon, 30 Aug 2021 15:34:36 +1000 Subject: [PATCH 04/21] hw/intc: sifive_clint: Use RISC-V CPU GPIO lines Instead of using riscv_cpu_update_mip() let's instead use the new RISC-V CPU GPIO lines to set the timer and soft MIP bits. Signed-off-by: Alistair Francis Reviewed-by: Bin Meng Tested-by: Bin Meng Reviewed-by: LIU Zhiwei Message-id: 946e1ef5e268b24084c7ddad84c146de62a56736.1630301632.git.alistair.francis@wdc.com --- hw/intc/sifive_clint.c | 72 +++++++++++++++++++++++----------- include/hw/intc/sifive_clint.h | 2 + 2 files changed, 52 insertions(+), 22 deletions(-) diff --git a/hw/intc/sifive_clint.c b/hw/intc/sifive_clint.c index 99c870ced2..ab172d8e40 100644 --- a/hw/intc/sifive_clint.c +++ b/hw/intc/sifive_clint.c @@ -28,6 +28,12 @@ #include "hw/qdev-properties.h" #include "hw/intc/sifive_clint.h" #include "qemu/timer.h" +#include "hw/irq.h" + +typedef struct sifive_clint_callback { + SiFiveCLINTState *s; + int num; +} sifive_clint_callback; static uint64_t cpu_riscv_read_rtc(uint32_t timebase_freq) { @@ -39,7 +45,9 @@ static uint64_t cpu_riscv_read_rtc(uint32_t timebase_freq) * Called when timecmp is written to update the QEMU timer or immediately * trigger timer interrupt if mtimecmp <= current timer value. */ -static void sifive_clint_write_timecmp(RISCVCPU *cpu, uint64_t value, +static void sifive_clint_write_timecmp(SiFiveCLINTState *s, RISCVCPU *cpu, + int hartid, + uint64_t value, uint32_t timebase_freq) { uint64_t next; @@ -51,12 +59,12 @@ static void sifive_clint_write_timecmp(RISCVCPU *cpu, uint64_t value, if (cpu->env.timecmp <= rtc_r) { /* if we're setting an MTIMECMP value in the "past", immediately raise the timer interrupt */ - riscv_cpu_update_mip(cpu, MIP_MTIP, BOOL_TO_MASK(1)); + qemu_irq_raise(s->timer_irqs[hartid - s->hartid_base]); return; } /* otherwise, set up the future timer interrupt */ - riscv_cpu_update_mip(cpu, MIP_MTIP, BOOL_TO_MASK(0)); + qemu_irq_lower(s->timer_irqs[hartid - s->hartid_base]); diff = cpu->env.timecmp - rtc_r; /* back to ns (note args switched in muldiv64) */ uint64_t ns_diff = muldiv64(diff, NANOSECONDS_PER_SECOND, timebase_freq); @@ -91,8 +99,9 @@ static void sifive_clint_write_timecmp(RISCVCPU *cpu, uint64_t value, */ static void sifive_clint_timer_cb(void *opaque) { - RISCVCPU *cpu = opaque; - riscv_cpu_update_mip(cpu, MIP_MTIP, BOOL_TO_MASK(1)); + sifive_clint_callback *state = opaque; + + qemu_irq_raise(state->s->timer_irqs[state->num]); } /* CPU wants to read rtc or timecmp register */ @@ -158,7 +167,7 @@ static void sifive_clint_write(void *opaque, hwaddr addr, uint64_t value, if (!env) { error_report("clint: invalid timecmp hartid: %zu", hartid); } else if ((addr & 0x3) == 0) { - riscv_cpu_update_mip(RISCV_CPU(cpu), MIP_MSIP, BOOL_TO_MASK(value)); + qemu_set_irq(clint->soft_irqs[hartid - clint->hartid_base], value); } else { error_report("clint: invalid sip write: %08x", (uint32_t)addr); } @@ -174,13 +183,13 @@ static void sifive_clint_write(void *opaque, hwaddr addr, uint64_t value, } else if ((addr & 0x7) == 0) { /* timecmp_lo */ uint64_t timecmp_hi = env->timecmp >> 32; - sifive_clint_write_timecmp(RISCV_CPU(cpu), + sifive_clint_write_timecmp(clint, RISCV_CPU(cpu), hartid, timecmp_hi << 32 | (value & 0xFFFFFFFF), clint->timebase_freq); return; } else if ((addr & 0x7) == 4) { /* timecmp_hi */ uint64_t timecmp_lo = env->timecmp; - sifive_clint_write_timecmp(RISCV_CPU(cpu), + sifive_clint_write_timecmp(clint, RISCV_CPU(cpu), hartid, value << 32 | (timecmp_lo & 0xFFFFFFFF), clint->timebase_freq); } else { error_report("clint: invalid timecmp write: %08x", (uint32_t)addr); @@ -226,6 +235,12 @@ static void sifive_clint_realize(DeviceState *dev, Error **errp) memory_region_init_io(&s->mmio, OBJECT(dev), &sifive_clint_ops, s, TYPE_SIFIVE_CLINT, s->aperture_size); sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mmio); + + s->timer_irqs = g_malloc(sizeof(qemu_irq) * s->num_harts); + qdev_init_gpio_out(dev, s->timer_irqs, s->num_harts); + + s->soft_irqs = g_malloc(sizeof(qemu_irq) * s->num_harts); + qdev_init_gpio_out(dev, s->soft_irqs, s->num_harts); } static void sifive_clint_class_init(ObjectClass *klass, void *data) @@ -249,7 +264,6 @@ static void sifive_clint_register_types(void) type_init(sifive_clint_register_types) - /* * Create CLINT device. */ @@ -259,19 +273,6 @@ DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, bool provide_rdtime) { int i; - for (i = 0; i < num_harts; i++) { - CPUState *cpu = qemu_get_cpu(hartid_base + i); - CPURISCVState *env = cpu ? cpu->env_ptr : NULL; - if (!env) { - continue; - } - if (provide_rdtime) { - riscv_cpu_set_rdtime_fn(env, cpu_riscv_read_rtc, timebase_freq); - } - env->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, - &sifive_clint_timer_cb, cpu); - env->timecmp = 0; - } DeviceState *dev = qdev_new(TYPE_SIFIVE_CLINT); qdev_prop_set_uint32(dev, "hartid-base", hartid_base); @@ -283,5 +284,32 @@ DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, qdev_prop_set_uint32(dev, "timebase-freq", timebase_freq); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, addr); + + for (i = 0; i < num_harts; i++) { + CPUState *cpu = qemu_get_cpu(hartid_base + i); + RISCVCPU *rvcpu = RISCV_CPU(cpu); + CPURISCVState *env = cpu ? cpu->env_ptr : NULL; + sifive_clint_callback *cb = g_malloc0(sizeof(sifive_clint_callback)); + + if (!env) { + g_free(cb); + continue; + } + if (provide_rdtime) { + riscv_cpu_set_rdtime_fn(env, cpu_riscv_read_rtc, timebase_freq); + } + + cb->s = SIFIVE_CLINT(dev); + cb->num = i; + env->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, + &sifive_clint_timer_cb, cb); + env->timecmp = 0; + + qdev_connect_gpio_out(dev, i, + qdev_get_gpio_in(DEVICE(rvcpu), IRQ_M_TIMER)); + qdev_connect_gpio_out(dev, num_harts + i, + qdev_get_gpio_in(DEVICE(rvcpu), IRQ_M_SOFT)); + } + return dev; } diff --git a/include/hw/intc/sifive_clint.h b/include/hw/intc/sifive_clint.h index a30be0f3d6..921b1561dd 100644 --- a/include/hw/intc/sifive_clint.h +++ b/include/hw/intc/sifive_clint.h @@ -40,6 +40,8 @@ typedef struct SiFiveCLINTState { uint32_t time_base; uint32_t aperture_size; uint32_t timebase_freq; + qemu_irq *timer_irqs; + qemu_irq *soft_irqs; } SiFiveCLINTState; DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, From e5cc6aaeb51dd0d80e1f5a6d6a6808d6355958aa Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Mon, 30 Aug 2021 15:34:49 +1000 Subject: [PATCH 05/21] hw/intc: ibex_plic: Convert the PLIC to use RISC-V CPU GPIO lines MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of using riscv_cpu_update_mip() let's instead use the new RISC-V CPU GPIO lines to set the external MIP bits. Signed-off-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 0a76946981852f5bd15f0c37ab35b253371027a8.1630301632.git.alistair.francis@wdc.com --- hw/intc/ibex_plic.c | 17 ++++++----------- hw/riscv/opentitan.c | 8 ++++++++ include/hw/intc/ibex_plic.h | 2 ++ 3 files changed, 16 insertions(+), 11 deletions(-) diff --git a/hw/intc/ibex_plic.c b/hw/intc/ibex_plic.c index edf76e4f61..ff430356f8 100644 --- a/hw/intc/ibex_plic.c +++ b/hw/intc/ibex_plic.c @@ -27,6 +27,7 @@ #include "target/riscv/cpu_bits.h" #include "target/riscv/cpu.h" #include "hw/intc/ibex_plic.h" +#include "hw/irq.h" static bool addr_between(uint32_t addr, uint32_t base, uint32_t num) { @@ -92,19 +93,10 @@ static bool ibex_plic_irqs_pending(IbexPlicState *s, uint32_t context) static void ibex_plic_update(IbexPlicState *s) { - CPUState *cpu; - int level, i; + int i; for (i = 0; i < s->num_cpus; i++) { - cpu = qemu_get_cpu(i); - - if (!cpu) { - continue; - } - - level = ibex_plic_irqs_pending(s, 0); - - riscv_cpu_update_mip(RISCV_CPU(cpu), MIP_MEIP, BOOL_TO_MASK(level)); + qemu_set_irq(s->external_irqs[i], ibex_plic_irqs_pending(s, 0)); } } @@ -268,6 +260,9 @@ static void ibex_plic_realize(DeviceState *dev, Error **errp) qdev_init_gpio_in(dev, ibex_plic_irq_request, s->num_sources); + s->external_irqs = g_malloc(sizeof(qemu_irq) * s->num_cpus); + qdev_init_gpio_out(dev, s->external_irqs, s->num_cpus); + /* * We can't allow the supervisor to control SEIP as this would allow the * supervisor to clear a pending external interrupt which will result in diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c index 36a41c8b5b..048aced0ec 100644 --- a/hw/riscv/opentitan.c +++ b/hw/riscv/opentitan.c @@ -118,6 +118,7 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp) MachineState *ms = MACHINE(qdev_get_machine()); LowRISCIbexSoCState *s = RISCV_IBEX_SOC(dev_soc); MemoryRegion *sys_mem = get_system_memory(); + int i; object_property_set_str(OBJECT(&s->cpus), "cpu-type", ms->cpu_type, &error_abort); @@ -149,6 +150,13 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp) } sysbus_mmio_map(SYS_BUS_DEVICE(&s->plic), 0, memmap[IBEX_DEV_PLIC].base); + for (i = 0; i < ms->smp.cpus; i++) { + CPUState *cpu = qemu_get_cpu(i); + + qdev_connect_gpio_out(DEVICE(&s->plic), i, + qdev_get_gpio_in(DEVICE(cpu), IRQ_M_EXT)); + } + /* UART */ qdev_prop_set_chr(DEVICE(&(s->uart)), "chardev", serial_hd(0)); if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart), errp)) { diff --git a/include/hw/intc/ibex_plic.h b/include/hw/intc/ibex_plic.h index 7fc495db99..d596436e06 100644 --- a/include/hw/intc/ibex_plic.h +++ b/include/hw/intc/ibex_plic.h @@ -60,6 +60,8 @@ struct IbexPlicState { uint32_t threshold_base; uint32_t claim_base; + + qemu_irq *external_irqs; }; #endif /* HW_IBEX_PLIC_H */ From f436ecc3156dea7edce97e7c247e3667203f5c8b Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Mon, 30 Aug 2021 15:35:02 +1000 Subject: [PATCH 06/21] hw/intc: sifive_plic: Convert the PLIC to use RISC-V CPU GPIO lines MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of using riscv_cpu_update_mip() let's instead use the new RISC-V CPU GPIO lines to set the external MIP bits. Signed-off-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Reviewed-by: Bin Meng Tested-by: Bin Meng Message-id: 0364190bfa935058a845c0fa1ecf650328840ad5.1630301632.git.alistair.francis@wdc.com --- hw/intc/sifive_plic.c | 30 +++++++++++++++++++++++------- hw/riscv/microchip_pfsoc.c | 2 +- hw/riscv/shakti_c.c | 3 ++- hw/riscv/sifive_e.c | 2 +- hw/riscv/sifive_u.c | 2 +- hw/riscv/virt.c | 2 +- include/hw/intc/sifive_plic.h | 4 ++++ 7 files changed, 33 insertions(+), 12 deletions(-) diff --git a/hw/intc/sifive_plic.c b/hw/intc/sifive_plic.c index 78903beb06..9ba36dc0b3 100644 --- a/hw/intc/sifive_plic.c +++ b/hw/intc/sifive_plic.c @@ -29,6 +29,7 @@ #include "hw/intc/sifive_plic.h" #include "target/riscv/cpu.h" #include "migration/vmstate.h" +#include "hw/irq.h" #define RISCV_DEBUG_PLIC 0 @@ -139,18 +140,14 @@ static void sifive_plic_update(SiFivePLICState *plic) for (addrid = 0; addrid < plic->num_addrs; addrid++) { uint32_t hartid = plic->addr_config[addrid].hartid; PLICMode mode = plic->addr_config[addrid].mode; - CPUState *cpu = qemu_get_cpu(hartid); - CPURISCVState *env = cpu ? cpu->env_ptr : NULL; - if (!env) { - continue; - } int level = sifive_plic_irqs_pending(plic, addrid); + switch (mode) { case PLICMode_M: - riscv_cpu_update_mip(RISCV_CPU(cpu), MIP_MEIP, BOOL_TO_MASK(level)); + qemu_set_irq(plic->m_external_irqs[hartid - plic->hartid_base], level); break; case PLICMode_S: - riscv_cpu_update_mip(RISCV_CPU(cpu), MIP_SEIP, BOOL_TO_MASK(level)); + qemu_set_irq(plic->s_external_irqs[hartid - plic->hartid_base], level); break; default: break; @@ -456,6 +453,12 @@ static void sifive_plic_realize(DeviceState *dev, Error **errp) sysbus_init_mmio(SYS_BUS_DEVICE(dev), &plic->mmio); qdev_init_gpio_in(dev, sifive_plic_irq_request, plic->num_sources); + plic->s_external_irqs = g_malloc(sizeof(qemu_irq) * plic->num_harts); + qdev_init_gpio_out(dev, plic->s_external_irqs, plic->num_harts); + + plic->m_external_irqs = g_malloc(sizeof(qemu_irq) * plic->num_harts); + qdev_init_gpio_out(dev, plic->m_external_irqs, plic->num_harts); + /* We can't allow the supervisor to control SEIP as this would allow the * supervisor to clear a pending external interrupt which will result in * lost a interrupt in the case a PLIC is attached. The SEIP bit must be @@ -520,6 +523,7 @@ type_init(sifive_plic_register_types) * Create PLIC device. */ DeviceState *sifive_plic_create(hwaddr addr, char *hart_config, + uint32_t num_harts, uint32_t hartid_base, uint32_t num_sources, uint32_t num_priorities, uint32_t priority_base, uint32_t pending_base, uint32_t enable_base, @@ -527,6 +531,8 @@ DeviceState *sifive_plic_create(hwaddr addr, char *hart_config, uint32_t context_stride, uint32_t aperture_size) { DeviceState *dev = qdev_new(TYPE_SIFIVE_PLIC); + int i; + assert(enable_stride == (enable_stride & -enable_stride)); assert(context_stride == (context_stride & -context_stride)); qdev_prop_set_string(dev, "hart-config", hart_config); @@ -542,5 +548,15 @@ DeviceState *sifive_plic_create(hwaddr addr, char *hart_config, qdev_prop_set_uint32(dev, "aperture-size", aperture_size); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, addr); + + for (i = 0; i < num_harts; i++) { + CPUState *cpu = qemu_get_cpu(hartid_base + i); + + qdev_connect_gpio_out(dev, i, + qdev_get_gpio_in(DEVICE(cpu), IRQ_S_EXT)); + qdev_connect_gpio_out(dev, num_harts + i, + qdev_get_gpio_in(DEVICE(cpu), IRQ_M_EXT)); + } + return dev; } diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c index eb8e79e0a1..eef55f69fd 100644 --- a/hw/riscv/microchip_pfsoc.c +++ b/hw/riscv/microchip_pfsoc.c @@ -274,7 +274,7 @@ static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp) /* PLIC */ s->plic = sifive_plic_create(memmap[MICROCHIP_PFSOC_PLIC].base, - plic_hart_config, 0, + plic_hart_config, ms->smp.cpus, 0, MICROCHIP_PFSOC_PLIC_NUM_SOURCES, MICROCHIP_PFSOC_PLIC_NUM_PRIORITIES, MICROCHIP_PFSOC_PLIC_PRIORITY_BASE, diff --git a/hw/riscv/shakti_c.c b/hw/riscv/shakti_c.c index 18f70fadaa..09d4e1433e 100644 --- a/hw/riscv/shakti_c.c +++ b/hw/riscv/shakti_c.c @@ -106,13 +106,14 @@ type_init(shakti_c_machine_type_info_register) static void shakti_c_soc_state_realize(DeviceState *dev, Error **errp) { + MachineState *ms = MACHINE(qdev_get_machine()); ShaktiCSoCState *sss = RISCV_SHAKTI_SOC(dev); MemoryRegion *system_memory = get_system_memory(); sysbus_realize(SYS_BUS_DEVICE(&sss->cpus), &error_abort); sss->plic = sifive_plic_create(shakti_c_memmap[SHAKTI_C_PLIC].base, - (char *)SHAKTI_C_PLIC_HART_CONFIG, 0, + (char *)SHAKTI_C_PLIC_HART_CONFIG, ms->smp.cpus, 0, SHAKTI_C_PLIC_NUM_SOURCES, SHAKTI_C_PLIC_NUM_PRIORITIES, SHAKTI_C_PLIC_PRIORITY_BASE, diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c index 5b7b245e1f..04265c5640 100644 --- a/hw/riscv/sifive_e.c +++ b/hw/riscv/sifive_e.c @@ -197,7 +197,7 @@ static void sifive_e_soc_realize(DeviceState *dev, Error **errp) /* MMIO */ s->plic = sifive_plic_create(memmap[SIFIVE_E_DEV_PLIC].base, - (char *)SIFIVE_E_PLIC_HART_CONFIG, 0, + (char *)SIFIVE_E_PLIC_HART_CONFIG, ms->smp.cpus, 0, SIFIVE_E_PLIC_NUM_SOURCES, SIFIVE_E_PLIC_NUM_PRIORITIES, SIFIVE_E_PLIC_PRIORITY_BASE, diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 6cc1a62b0f..6766edc1d0 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -832,7 +832,7 @@ static void sifive_u_soc_realize(DeviceState *dev, Error **errp) /* MMIO */ s->plic = sifive_plic_create(memmap[SIFIVE_U_DEV_PLIC].base, - plic_hart_config, 0, + plic_hart_config, ms->smp.cpus, 0, SIFIVE_U_PLIC_NUM_SOURCES, SIFIVE_U_PLIC_NUM_PRIORITIES, SIFIVE_U_PLIC_PRIORITY_BASE, diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 5624adda58..47f1beb473 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -625,7 +625,7 @@ static void virt_machine_init(MachineState *machine) /* Per-socket PLIC */ s->plic[i] = sifive_plic_create( memmap[VIRT_PLIC].base + i * memmap[VIRT_PLIC].size, - plic_hart_config, base_hartid, + plic_hart_config, hart_count, base_hartid, VIRT_PLIC_NUM_SOURCES, VIRT_PLIC_NUM_PRIORITIES, VIRT_PLIC_PRIORITY_BASE, diff --git a/include/hw/intc/sifive_plic.h b/include/hw/intc/sifive_plic.h index 1e451a270c..134cf39a96 100644 --- a/include/hw/intc/sifive_plic.h +++ b/include/hw/intc/sifive_plic.h @@ -72,9 +72,13 @@ struct SiFivePLICState { uint32_t context_base; uint32_t context_stride; uint32_t aperture_size; + + qemu_irq *m_external_irqs; + qemu_irq *s_external_irqs; }; DeviceState *sifive_plic_create(hwaddr addr, char *hart_config, + uint32_t num_harts, uint32_t hartid_base, uint32_t num_sources, uint32_t num_priorities, uint32_t priority_base, uint32_t pending_base, uint32_t enable_base, From 57a3a6226529e60ef4eb5e11b577f2e532a72acc Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Mon, 30 Aug 2021 15:35:15 +1000 Subject: [PATCH 07/21] hw/intc: ibex_timer: Convert the timer to use RISC-V CPU GPIO lines MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of using riscv_cpu_update_mip() let's instead use the new RISC-V CPU GPIO lines to set the timer MIP bits. Signed-off-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 84d5b1d5783d2e79eee69a2f7ac480cc0c070db3.1630301632.git.alistair.francis@wdc.com --- hw/riscv/opentitan.c | 3 +++ hw/timer/ibex_timer.c | 17 ++++++++++++----- include/hw/timer/ibex_timer.h | 2 ++ 3 files changed, 17 insertions(+), 5 deletions(-) diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c index 048aced0ec..f7cfcf1c3a 100644 --- a/hw/riscv/opentitan.c +++ b/hw/riscv/opentitan.c @@ -183,6 +183,9 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp) sysbus_connect_irq(SYS_BUS_DEVICE(&s->timer), 0, qdev_get_gpio_in(DEVICE(&s->plic), IBEX_TIMER_TIMEREXPIRED0_0)); + qdev_connect_gpio_out(DEVICE(&s->timer), 0, + qdev_get_gpio_in(DEVICE(qemu_get_cpu(0)), + IRQ_M_TIMER)); create_unimplemented_device("riscv.lowrisc.ibex.gpio", memmap[IBEX_DEV_GPIO].base, memmap[IBEX_DEV_GPIO].size); diff --git a/hw/timer/ibex_timer.c b/hw/timer/ibex_timer.c index 5befb53506..66e1f8e48c 100644 --- a/hw/timer/ibex_timer.c +++ b/hw/timer/ibex_timer.c @@ -77,7 +77,7 @@ static void ibex_timer_update_irqs(IbexTimerState *s) /* * If the mtimecmp was in the past raise the interrupt now. */ - riscv_cpu_update_mip(cpu, MIP_MTIP, BOOL_TO_MASK(1)); + qemu_irq_raise(s->m_timer_irq); if (s->timer_intr_enable & R_INTR_ENABLE_IE_0_MASK) { s->timer_intr_state |= R_INTR_STATE_IS_0_MASK; qemu_set_irq(s->irq, true); @@ -86,7 +86,7 @@ static void ibex_timer_update_irqs(IbexTimerState *s) } /* Setup a timer to trigger the interrupt in the future */ - riscv_cpu_update_mip(cpu, MIP_MTIP, BOOL_TO_MASK(0)); + qemu_irq_lower(s->m_timer_irq); qemu_set_irq(s->irq, false); diff = cpu->env.timecmp - now; @@ -106,10 +106,8 @@ static void ibex_timer_update_irqs(IbexTimerState *s) static void ibex_timer_cb(void *opaque) { IbexTimerState *s = opaque; - CPUState *cs = qemu_get_cpu(0); - RISCVCPU *cpu = RISCV_CPU(cs); - riscv_cpu_update_mip(cpu, MIP_MTIP, BOOL_TO_MASK(1)); + qemu_irq_raise(s->m_timer_irq); if (s->timer_intr_enable & R_INTR_ENABLE_IE_0_MASK) { s->timer_intr_state |= R_INTR_STATE_IS_0_MASK; qemu_set_irq(s->irq, true); @@ -280,12 +278,21 @@ static void ibex_timer_init(Object *obj) sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio); } +static void ibex_timer_realize(DeviceState *dev, Error **errp) +{ + IbexTimerState *s = IBEX_TIMER(dev); + + qdev_init_gpio_out(dev, &s->m_timer_irq, 1); +} + + static void ibex_timer_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); dc->reset = ibex_timer_reset; dc->vmsd = &vmstate_ibex_timer; + dc->realize = ibex_timer_realize; device_class_set_props(dc, ibex_timer_properties); } diff --git a/include/hw/timer/ibex_timer.h b/include/hw/timer/ibex_timer.h index 6a43537003..b6f69b38ee 100644 --- a/include/hw/timer/ibex_timer.h +++ b/include/hw/timer/ibex_timer.h @@ -48,5 +48,7 @@ struct IbexTimerState { uint32_t timebase_freq; qemu_irq irq; + + qemu_irq m_timer_irq; }; #endif /* HW_IBEX_TIMER_H */ From 5bf6f1acdda980a4ad0e8f01fe515c6d6e130fce Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Thu, 9 Sep 2021 13:55:02 +1000 Subject: [PATCH 08/21] hw/timer: Add SiFive PWM support This is the initial commit of the SiFive PWM timer. This is used by guest software as a timer and is included in the SiFive FU540 SoC. Signed-off-by: Justin Restivo Signed-off-by: Alexandra Clifford Signed-off-by: Amanda Strnad Signed-off-by: Alistair Francis Reviewed-by: Bin Meng Message-id: 9f70a210acbfaf0e1ea6ad311ab892ac69134d8b.1631159656.git.alistair.francis@wdc.com --- hw/timer/Kconfig | 3 + hw/timer/meson.build | 1 + hw/timer/sifive_pwm.c | 468 ++++++++++++++++++++++++++++++++++ hw/timer/trace-events | 6 + include/hw/timer/sifive_pwm.h | 62 +++++ 5 files changed, 540 insertions(+) create mode 100644 hw/timer/sifive_pwm.c create mode 100644 include/hw/timer/sifive_pwm.h diff --git a/hw/timer/Kconfig b/hw/timer/Kconfig index 1e73da7e12..010be7ed1f 100644 --- a/hw/timer/Kconfig +++ b/hw/timer/Kconfig @@ -25,6 +25,9 @@ config ALLWINNER_A10_PIT bool select PTIMER +config SIFIVE_PWM + bool + config STM32F2XX_TIMER bool diff --git a/hw/timer/meson.build b/hw/timer/meson.build index e67478a8f1..03092e2ceb 100644 --- a/hw/timer/meson.build +++ b/hw/timer/meson.build @@ -35,5 +35,6 @@ softmmu_ss.add(when: 'CONFIG_STELLARIS_GPTM', if_true: files('stellaris-gptm.c') softmmu_ss.add(when: 'CONFIG_STM32F2XX_TIMER', if_true: files('stm32f2xx_timer.c')) softmmu_ss.add(when: 'CONFIG_XILINX', if_true: files('xilinx_timer.c')) specific_ss.add(when: 'CONFIG_IBEX', if_true: files('ibex_timer.c')) +softmmu_ss.add(when: 'CONFIG_SIFIVE_PWM', if_true: files('sifive_pwm.c')) specific_ss.add(when: 'CONFIG_AVR_TIMER16', if_true: files('avr_timer16.c')) diff --git a/hw/timer/sifive_pwm.c b/hw/timer/sifive_pwm.c new file mode 100644 index 0000000000..c664480ccf --- /dev/null +++ b/hw/timer/sifive_pwm.c @@ -0,0 +1,468 @@ +/* + * SiFive PWM + * + * Copyright (c) 2020 Western Digital + * + * Author: Alistair Francis + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "trace.h" +#include "hw/irq.h" +#include "hw/timer/sifive_pwm.h" +#include "hw/qdev-properties.h" +#include "hw/registerfields.h" +#include "migration/vmstate.h" +#include "qemu/log.h" +#include "qemu/module.h" + +#define HAS_PWM_EN_BITS(cfg) ((cfg & R_CONFIG_ENONESHOT_MASK) || \ + (cfg & R_CONFIG_ENALWAYS_MASK)) + +#define PWMCMP_MASK 0xFFFF +#define PWMCOUNT_MASK 0x7FFFFFFF + +REG32(CONFIG, 0x00) + FIELD(CONFIG, SCALE, 0, 4) + FIELD(CONFIG, STICKY, 8, 1) + FIELD(CONFIG, ZEROCMP, 9, 1) + FIELD(CONFIG, DEGLITCH, 10, 1) + FIELD(CONFIG, ENALWAYS, 12, 1) + FIELD(CONFIG, ENONESHOT, 13, 1) + FIELD(CONFIG, CMP0CENTER, 16, 1) + FIELD(CONFIG, CMP1CENTER, 17, 1) + FIELD(CONFIG, CMP2CENTER, 18, 1) + FIELD(CONFIG, CMP3CENTER, 19, 1) + FIELD(CONFIG, CMP0GANG, 24, 1) + FIELD(CONFIG, CMP1GANG, 25, 1) + FIELD(CONFIG, CMP2GANG, 26, 1) + FIELD(CONFIG, CMP3GANG, 27, 1) + FIELD(CONFIG, CMP0IP, 28, 1) + FIELD(CONFIG, CMP1IP, 29, 1) + FIELD(CONFIG, CMP2IP, 30, 1) + FIELD(CONFIG, CMP3IP, 31, 1) +REG32(COUNT, 0x08) +REG32(PWMS, 0x10) +REG32(PWMCMP0, 0x20) +REG32(PWMCMP1, 0x24) +REG32(PWMCMP2, 0x28) +REG32(PWMCMP3, 0x2C) + +static inline uint64_t sifive_pwm_ns_to_ticks(SiFivePwmState *s, + uint64_t time) +{ + return muldiv64(time, s->freq_hz, NANOSECONDS_PER_SECOND); +} + +static inline uint64_t sifive_pwm_ticks_to_ns(SiFivePwmState *s, + uint64_t ticks) +{ + return muldiv64(ticks, NANOSECONDS_PER_SECOND, s->freq_hz); +} + +static inline uint64_t sifive_pwm_compute_scale(SiFivePwmState *s) +{ + return s->pwmcfg & R_CONFIG_SCALE_MASK; +} + +static void sifive_pwm_set_alarms(SiFivePwmState *s) +{ + uint64_t now_ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + + if (HAS_PWM_EN_BITS(s->pwmcfg)) { + /* + * Subtract ticks from number of ticks when the timer was zero + * and mask to the register width. + */ + uint64_t pwmcount = (sifive_pwm_ns_to_ticks(s, now_ns) - + s->tick_offset) & PWMCOUNT_MASK; + uint64_t scale = sifive_pwm_compute_scale(s); + /* PWMs only contains PWMCMP_MASK bits starting at scale */ + uint64_t pwms = (pwmcount & (PWMCMP_MASK << scale)) >> scale; + + for (int i = 0; i < SIFIVE_PWM_CHANS; i++) { + uint64_t pwmcmp = s->pwmcmp[i] & PWMCMP_MASK; + uint64_t pwmcmp_ticks = pwmcmp << scale; + + /* + * Per circuit diagram and spec, both cases raises corresponding + * IP bit one clock cycle after time expires. + */ + if (pwmcmp > pwms) { + uint64_t offset = pwmcmp_ticks - pwmcount + 1; + uint64_t when_to_fire = now_ns + + sifive_pwm_ticks_to_ns(s, offset); + + trace_sifive_pwm_set_alarm(when_to_fire, now_ns); + timer_mod(&s->timer[i], when_to_fire); + } else { + /* Schedule interrupt for next cycle */ + trace_sifive_pwm_set_alarm(now_ns + 1, now_ns); + timer_mod(&s->timer[i], now_ns + 1); + } + + } + } else { + /* + * If timer incrementing disabled, just do pwms > pwmcmp check since + * a write may have happened to PWMs. + */ + uint64_t pwmcount = (s->tick_offset) & PWMCOUNT_MASK; + uint64_t scale = sifive_pwm_compute_scale(s); + uint64_t pwms = (pwmcount & (PWMCMP_MASK << scale)) >> scale; + + for (int i = 0; i < SIFIVE_PWM_CHANS; i++) { + uint64_t pwmcmp = s->pwmcmp[i] & PWMCMP_MASK; + + if (pwms >= pwmcmp) { + trace_sifive_pwm_set_alarm(now_ns + 1, now_ns); + timer_mod(&s->timer[i], now_ns + 1); + } else { + /* Effectively disable timer by scheduling far in future. */ + trace_sifive_pwm_set_alarm(0xFFFFFFFFFFFFFF, now_ns); + timer_mod(&s->timer[i], 0xFFFFFFFFFFFFFF); + } + } + } +} + +static void sifive_pwm_interrupt(SiFivePwmState *s, int num) +{ + uint64_t now = sifive_pwm_ns_to_ticks(s, + qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); + bool was_incrementing = HAS_PWM_EN_BITS(s->pwmcfg); + + trace_sifive_pwm_interrupt(num); + + s->pwmcfg |= R_CONFIG_CMP0IP_MASK << num; + qemu_irq_raise(s->irqs[num]); + + /* + * If the zerocmp is set and pwmcmp0 raised the interrupt + * reset the zero ticks. + */ + if ((s->pwmcfg & R_CONFIG_ZEROCMP_MASK) && (num == 0)) { + /* If reset signal conditions, disable ENONESHOT. */ + s->pwmcfg &= ~R_CONFIG_ENONESHOT_MASK; + + if (was_incrementing) { + /* If incrementing, time in ticks is when pwmcount is zero */ + s->tick_offset = now; + } else { + /* If not incrementing, pwmcount = 0 */ + s->tick_offset = 0; + } + } + + /* + * If carryout bit set, which we discern via looking for overflow, + * also reset ENONESHOT. + */ + if (was_incrementing && + ((now & PWMCOUNT_MASK) < (s->tick_offset & PWMCOUNT_MASK))) { + s->pwmcfg &= ~R_CONFIG_ENONESHOT_MASK; + } + + /* Schedule or disable interrupts */ + sifive_pwm_set_alarms(s); + + /* If was enabled, and now not enabled, switch tick rep */ + if (was_incrementing && !HAS_PWM_EN_BITS(s->pwmcfg)) { + s->tick_offset = (now - s->tick_offset) & PWMCOUNT_MASK; + } +} + +static void sifive_pwm_interrupt_0(void *opaque) +{ + SiFivePwmState *s = opaque; + + sifive_pwm_interrupt(s, 0); +} + +static void sifive_pwm_interrupt_1(void *opaque) +{ + SiFivePwmState *s = opaque; + + sifive_pwm_interrupt(s, 1); +} + +static void sifive_pwm_interrupt_2(void *opaque) +{ + SiFivePwmState *s = opaque; + + sifive_pwm_interrupt(s, 2); +} + +static void sifive_pwm_interrupt_3(void *opaque) +{ + SiFivePwmState *s = opaque; + + sifive_pwm_interrupt(s, 3); +} + +static uint64_t sifive_pwm_read(void *opaque, hwaddr addr, + unsigned int size) +{ + SiFivePwmState *s = opaque; + uint64_t cur_time, scale; + uint64_t now = sifive_pwm_ns_to_ticks(s, + qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); + + trace_sifive_pwm_read(addr); + + switch (addr) { + case A_CONFIG: + return s->pwmcfg; + case A_COUNT: + cur_time = s->tick_offset; + + if (HAS_PWM_EN_BITS(s->pwmcfg)) { + cur_time = now - cur_time; + } + + /* + * Return the value in the counter with bit 31 always 0 + * This is allowed to wrap around so we don't need to check that. + */ + return cur_time & PWMCOUNT_MASK; + case A_PWMS: + cur_time = s->tick_offset; + scale = sifive_pwm_compute_scale(s); + + if (HAS_PWM_EN_BITS(s->pwmcfg)) { + cur_time = now - cur_time; + } + + return ((cur_time & PWMCOUNT_MASK) >> scale) & PWMCMP_MASK; + case A_PWMCMP0: + return s->pwmcmp[0] & PWMCMP_MASK; + case A_PWMCMP1: + return s->pwmcmp[1] & PWMCMP_MASK; + case A_PWMCMP2: + return s->pwmcmp[2] & PWMCMP_MASK; + case A_PWMCMP3: + return s->pwmcmp[3] & PWMCMP_MASK; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Bad offset 0x%"HWADDR_PRIx"\n", __func__, addr); + return 0; + } + + return 0; +} + +static void sifive_pwm_write(void *opaque, hwaddr addr, + uint64_t val64, unsigned int size) +{ + SiFivePwmState *s = opaque; + uint32_t value = val64; + uint64_t new_offset, scale; + uint64_t now = sifive_pwm_ns_to_ticks(s, + qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); + + trace_sifive_pwm_write(value, addr); + + switch (addr) { + case A_CONFIG: + if (value & (R_CONFIG_CMP0CENTER_MASK | R_CONFIG_CMP1CENTER_MASK | + R_CONFIG_CMP2CENTER_MASK | R_CONFIG_CMP3CENTER_MASK)) { + qemu_log_mask(LOG_UNIMP, "%s: CMPxCENTER is not supported\n", + __func__); + } + + if (value & (R_CONFIG_CMP0GANG_MASK | R_CONFIG_CMP1GANG_MASK | + R_CONFIG_CMP2GANG_MASK | R_CONFIG_CMP3GANG_MASK)) { + qemu_log_mask(LOG_UNIMP, "%s: CMPxGANG is not supported\n", + __func__); + } + + if (value & (R_CONFIG_CMP0IP_MASK | R_CONFIG_CMP1IP_MASK | + R_CONFIG_CMP2IP_MASK | R_CONFIG_CMP3IP_MASK)) { + qemu_log_mask(LOG_UNIMP, "%s: CMPxIP is not supported\n", + __func__); + } + + if (!(value & R_CONFIG_CMP0IP_MASK)) { + qemu_irq_lower(s->irqs[0]); + } + + if (!(value & R_CONFIG_CMP1IP_MASK)) { + qemu_irq_lower(s->irqs[1]); + } + + if (!(value & R_CONFIG_CMP2IP_MASK)) { + qemu_irq_lower(s->irqs[2]); + } + + if (!(value & R_CONFIG_CMP3IP_MASK)) { + qemu_irq_lower(s->irqs[3]); + } + + /* + * If this write enables the timer increment + * set the time when pwmcount was zero to be cur_time - pwmcount. + * If this write disables the timer increment + * convert back from pwmcount to the time in ticks + * when pwmcount was zero. + */ + if ((!HAS_PWM_EN_BITS(s->pwmcfg) && HAS_PWM_EN_BITS(value)) || + (HAS_PWM_EN_BITS(s->pwmcfg) && !HAS_PWM_EN_BITS(value))) { + s->tick_offset = (now - s->tick_offset) & PWMCOUNT_MASK; + } + + s->pwmcfg = value; + break; + case A_COUNT: + /* The guest changed the counter, updated the offset value. */ + new_offset = value; + + if (HAS_PWM_EN_BITS(s->pwmcfg)) { + new_offset = now - new_offset; + } + + s->tick_offset = new_offset; + break; + case A_PWMS: + scale = sifive_pwm_compute_scale(s); + new_offset = (((value & PWMCMP_MASK) << scale) & PWMCOUNT_MASK); + + if (HAS_PWM_EN_BITS(s->pwmcfg)) { + new_offset = now - new_offset; + } + + s->tick_offset = new_offset; + break; + case A_PWMCMP0: + s->pwmcmp[0] = value & PWMCMP_MASK; + break; + case A_PWMCMP1: + s->pwmcmp[1] = value & PWMCMP_MASK; + break; + case A_PWMCMP2: + s->pwmcmp[2] = value & PWMCMP_MASK; + break; + case A_PWMCMP3: + s->pwmcmp[3] = value & PWMCMP_MASK; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Bad offset 0x%"HWADDR_PRIx"\n", __func__, addr); + } + + /* Update the alarms to reflect possible updated values */ + sifive_pwm_set_alarms(s); +} + +static void sifive_pwm_reset(DeviceState *dev) +{ + SiFivePwmState *s = SIFIVE_PWM(dev); + uint64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + + s->pwmcfg = 0x00000000; + s->pwmcmp[0] = 0x00000000; + s->pwmcmp[1] = 0x00000000; + s->pwmcmp[2] = 0x00000000; + s->pwmcmp[3] = 0x00000000; + + s->tick_offset = sifive_pwm_ns_to_ticks(s, now); +} + +static const MemoryRegionOps sifive_pwm_ops = { + .read = sifive_pwm_read, + .write = sifive_pwm_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static const VMStateDescription vmstate_sifive_pwm = { + .name = TYPE_SIFIVE_PWM, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_TIMER_ARRAY(timer, SiFivePwmState, 4), + VMSTATE_UINT64(tick_offset, SiFivePwmState), + VMSTATE_UINT32(pwmcfg, SiFivePwmState), + VMSTATE_UINT32_ARRAY(pwmcmp, SiFivePwmState, 4), + VMSTATE_END_OF_LIST() + } +}; + +static Property sifive_pwm_properties[] = { + /* 0.5Ghz per spec after FSBL */ + DEFINE_PROP_UINT64("clock-frequency", struct SiFivePwmState, + freq_hz, 500000000ULL), + DEFINE_PROP_END_OF_LIST(), +}; + +static void sifive_pwm_init(Object *obj) +{ + SiFivePwmState *s = SIFIVE_PWM(obj); + int i; + + for (i = 0; i < SIFIVE_PWM_IRQS; i++) { + sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irqs[i]); + } + + memory_region_init_io(&s->mmio, obj, &sifive_pwm_ops, s, + TYPE_SIFIVE_PWM, 0x100); + sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio); +} + +static void sifive_pwm_realize(DeviceState *dev, Error **errp) +{ + SiFivePwmState *s = SIFIVE_PWM(dev); + + timer_init_ns(&s->timer[0], QEMU_CLOCK_VIRTUAL, + sifive_pwm_interrupt_0, s); + + timer_init_ns(&s->timer[1], QEMU_CLOCK_VIRTUAL, + sifive_pwm_interrupt_1, s); + + timer_init_ns(&s->timer[2], QEMU_CLOCK_VIRTUAL, + sifive_pwm_interrupt_2, s); + + timer_init_ns(&s->timer[3], QEMU_CLOCK_VIRTUAL, + sifive_pwm_interrupt_3, s); +} + +static void sifive_pwm_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->reset = sifive_pwm_reset; + device_class_set_props(dc, sifive_pwm_properties); + dc->vmsd = &vmstate_sifive_pwm; + dc->realize = sifive_pwm_realize; +} + +static const TypeInfo sifive_pwm_info = { + .name = TYPE_SIFIVE_PWM, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(SiFivePwmState), + .instance_init = sifive_pwm_init, + .class_init = sifive_pwm_class_init, +}; + +static void sifive_pwm_register_types(void) +{ + type_register_static(&sifive_pwm_info); +} + +type_init(sifive_pwm_register_types) diff --git a/hw/timer/trace-events b/hw/timer/trace-events index 5234c0ea9e..d0edcd2a80 100644 --- a/hw/timer/trace-events +++ b/hw/timer/trace-events @@ -88,3 +88,9 @@ sse_counter_reset(void) "SSE system counter: reset" sse_timer_read(uint64_t offset, uint64_t data, unsigned size) "SSE system timer read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u" sse_timer_write(uint64_t offset, uint64_t data, unsigned size) "SSE system timer write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u" sse_timer_reset(void) "SSE system timer: reset" + +# sifive_pwm.c +sifive_pwm_set_alarm(uint64_t alarm, uint64_t now) "Setting alarm to: 0x%" PRIx64 ", now: 0x%" PRIx64 +sifive_pwm_interrupt(int num) "Interrupt %d" +sifive_pwm_read(uint64_t offset) "Read at address: 0x%" PRIx64 +sifive_pwm_write(uint64_t data, uint64_t offset) "Write 0x%" PRIx64 " at address: 0x%" PRIx64 diff --git a/include/hw/timer/sifive_pwm.h b/include/hw/timer/sifive_pwm.h new file mode 100644 index 0000000000..6a8cf7b29e --- /dev/null +++ b/include/hw/timer/sifive_pwm.h @@ -0,0 +1,62 @@ +/* + * SiFive PWM + * + * Copyright (c) 2020 Western Digital + * + * Author: Alistair Francis + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef HW_SIFIVE_PWM_H +#define HW_SIFIVE_PWM_H + +#include "hw/sysbus.h" +#include "qemu/timer.h" +#include "qom/object.h" + +#define TYPE_SIFIVE_PWM "sifive-pwm" + +#define SIFIVE_PWM(obj) \ + OBJECT_CHECK(SiFivePwmState, (obj), TYPE_SIFIVE_PWM) + +#define SIFIVE_PWM_CHANS 4 +#define SIFIVE_PWM_IRQS SIFIVE_PWM_CHANS + +typedef struct SiFivePwmState { + /* */ + SysBusDevice parent_obj; + + /* */ + MemoryRegion mmio; + QEMUTimer timer[SIFIVE_PWM_CHANS]; + /* + * if en bit(s) set, is the number of ticks when pwmcount was 0 + * if en bit(s) not set, is the number of ticks in pwmcount + */ + uint64_t tick_offset; + uint64_t freq_hz; + + uint32_t pwmcfg; + uint32_t pwmcmp[SIFIVE_PWM_CHANS]; + + qemu_irq irqs[SIFIVE_PWM_IRQS]; +} SiFivePwmState; + +#endif /* HW_SIFIVE_PWM_H */ From ea6eaa0604d2ad66636f968842fe9ff315b065c8 Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Thu, 9 Sep 2021 13:55:15 +1000 Subject: [PATCH 09/21] sifive_u: Connect the SiFive PWM device Connect the SiFive PWM device and expose it via the device tree. Signed-off-by: Alistair Francis Reviewed-by: Bin Meng Message-id: 22f98648b4e012f78529a56f5ca60b0b27852a4d.1631159656.git.alistair.francis@wdc.com --- docs/system/riscv/sifive_u.rst | 1 + hw/riscv/Kconfig | 1 + hw/riscv/sifive_u.c | 55 +++++++++++++++++++++++++++++++++- include/hw/riscv/sifive_u.h | 14 ++++++++- 4 files changed, 69 insertions(+), 2 deletions(-) diff --git a/docs/system/riscv/sifive_u.rst b/docs/system/riscv/sifive_u.rst index 01108b5ecc..7c65e9c440 100644 --- a/docs/system/riscv/sifive_u.rst +++ b/docs/system/riscv/sifive_u.rst @@ -24,6 +24,7 @@ The ``sifive_u`` machine supports the following devices: * 2 QSPI controllers * 1 ISSI 25WP256 flash * 1 SD card in SPI mode +* PWM0 and PWM1 Please note the real world HiFive Unleashed board has a fixed configuration of 1 E51 core and 4 U54 core combination and the RISC-V core boots in 64-bit mode. diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig index ff75add6f3..d56c339ef6 100644 --- a/hw/riscv/Kconfig +++ b/hw/riscv/Kconfig @@ -69,6 +69,7 @@ config SIFIVE_U select SIFIVE_UART select SIFIVE_U_OTP select SIFIVE_U_PRCI + select SIFIVE_PWM select SSI_M25P80 select SSI_SD select UNIMP diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 6766edc1d0..f4cde10667 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -17,6 +17,7 @@ * 7) DMA (Direct Memory Access Controller) * 8) SPI0 connected to an SPI flash * 9) SPI2 connected to an SD card + * 10) PWM0 and PWM1 * * This board currently generates devicetree dynamically that indicates at least * two harts and up to five harts. @@ -75,6 +76,8 @@ static const MemMapEntry sifive_u_memmap[] = { [SIFIVE_U_DEV_PRCI] = { 0x10000000, 0x1000 }, [SIFIVE_U_DEV_UART0] = { 0x10010000, 0x1000 }, [SIFIVE_U_DEV_UART1] = { 0x10011000, 0x1000 }, + [SIFIVE_U_DEV_PWM0] = { 0x10020000, 0x1000 }, + [SIFIVE_U_DEV_PWM1] = { 0x10021000, 0x1000 }, [SIFIVE_U_DEV_QSPI0] = { 0x10040000, 0x1000 }, [SIFIVE_U_DEV_QSPI2] = { 0x10050000, 0x1000 }, [SIFIVE_U_DEV_GPIO] = { 0x10060000, 0x1000 }, @@ -441,6 +444,38 @@ static void create_fdt(SiFiveUState *s, const MemMapEntry *memmap, qemu_fdt_setprop_cell(fdt, nodename, "reg", 0x0); g_free(nodename); + nodename = g_strdup_printf("/soc/pwm@%lx", + (long)memmap[SIFIVE_U_DEV_PWM0].base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,pwm0"); + qemu_fdt_setprop_cells(fdt, nodename, "reg", + 0x0, memmap[SIFIVE_U_DEV_PWM0].base, + 0x0, memmap[SIFIVE_U_DEV_PWM0].size); + qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); + qemu_fdt_setprop_cells(fdt, nodename, "interrupts", + SIFIVE_U_PWM0_IRQ0, SIFIVE_U_PWM0_IRQ1, + SIFIVE_U_PWM0_IRQ2, SIFIVE_U_PWM0_IRQ3); + qemu_fdt_setprop_cells(fdt, nodename, "clocks", + prci_phandle, PRCI_CLK_TLCLK); + qemu_fdt_setprop_cell(fdt, nodename, "#pwm-cells", 0); + g_free(nodename); + + nodename = g_strdup_printf("/soc/pwm@%lx", + (long)memmap[SIFIVE_U_DEV_PWM1].base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,pwm0"); + qemu_fdt_setprop_cells(fdt, nodename, "reg", + 0x0, memmap[SIFIVE_U_DEV_PWM1].base, + 0x0, memmap[SIFIVE_U_DEV_PWM1].size); + qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); + qemu_fdt_setprop_cells(fdt, nodename, "interrupts", + SIFIVE_U_PWM1_IRQ0, SIFIVE_U_PWM1_IRQ1, + SIFIVE_U_PWM1_IRQ2, SIFIVE_U_PWM1_IRQ3); + qemu_fdt_setprop_cells(fdt, nodename, "clocks", + prci_phandle, PRCI_CLK_TLCLK); + qemu_fdt_setprop_cell(fdt, nodename, "#pwm-cells", 0); + g_free(nodename); + nodename = g_strdup_printf("/soc/serial@%lx", (long)memmap[SIFIVE_U_DEV_UART1].base); qemu_fdt_add_subnode(fdt, nodename); @@ -765,6 +800,8 @@ static void sifive_u_soc_instance_init(Object *obj) object_initialize_child(obj, "pdma", &s->dma, TYPE_SIFIVE_PDMA); object_initialize_child(obj, "spi0", &s->spi0, TYPE_SIFIVE_SPI); object_initialize_child(obj, "spi2", &s->spi2, TYPE_SIFIVE_SPI); + object_initialize_child(obj, "pwm0", &s->pwm[0], TYPE_SIFIVE_PWM); + object_initialize_child(obj, "pwm1", &s->pwm[1], TYPE_SIFIVE_PWM); } static void sifive_u_soc_realize(DeviceState *dev, Error **errp) @@ -777,7 +814,7 @@ static void sifive_u_soc_realize(DeviceState *dev, Error **errp) MemoryRegion *l2lim_mem = g_new(MemoryRegion, 1); char *plic_hart_config; size_t plic_hart_config_len; - int i; + int i, j; NICInfo *nd = &nd_table[0]; qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1); @@ -904,6 +941,22 @@ static void sifive_u_soc_realize(DeviceState *dev, Error **errp) sysbus_connect_irq(SYS_BUS_DEVICE(&s->gem), 0, qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_GEM_IRQ)); + /* PWM */ + for (i = 0; i < 2; i++) { + if (!sysbus_realize(SYS_BUS_DEVICE(&s->pwm[i]), errp)) { + return; + } + sysbus_mmio_map(SYS_BUS_DEVICE(&s->pwm[i]), 0, + memmap[SIFIVE_U_DEV_PWM0].base + (0x1000 * i)); + + /* Connect PWM interrupts to the PLIC */ + for (j = 0; j < SIFIVE_PWM_IRQS; j++) { + sysbus_connect_irq(SYS_BUS_DEVICE(&s->pwm[i]), j, + qdev_get_gpio_in(DEVICE(s->plic), + SIFIVE_U_PWM0_IRQ0 + (i * 4) + j)); + } + } + create_unimplemented_device("riscv.sifive.u.gem-mgmt", memmap[SIFIVE_U_DEV_GEM_MGMT].base, memmap[SIFIVE_U_DEV_GEM_MGMT].size); diff --git a/include/hw/riscv/sifive_u.h b/include/hw/riscv/sifive_u.h index 2656b39808..f71c90c94c 100644 --- a/include/hw/riscv/sifive_u.h +++ b/include/hw/riscv/sifive_u.h @@ -27,6 +27,7 @@ #include "hw/misc/sifive_u_otp.h" #include "hw/misc/sifive_u_prci.h" #include "hw/ssi/sifive_spi.h" +#include "hw/timer/sifive_pwm.h" #define TYPE_RISCV_U_SOC "riscv.sifive.u.soc" #define RISCV_U_SOC(obj) \ @@ -49,6 +50,7 @@ typedef struct SiFiveUSoCState { SiFiveSPIState spi0; SiFiveSPIState spi2; CadenceGEMState gem; + SiFivePwmState pwm[2]; uint32_t serial; char *cpu_type; @@ -92,7 +94,9 @@ enum { SIFIVE_U_DEV_FLASH0, SIFIVE_U_DEV_DRAM, SIFIVE_U_DEV_GEM, - SIFIVE_U_DEV_GEM_MGMT + SIFIVE_U_DEV_GEM_MGMT, + SIFIVE_U_DEV_PWM0, + SIFIVE_U_DEV_PWM1 }; enum { @@ -126,6 +130,14 @@ enum { SIFIVE_U_PDMA_IRQ5 = 28, SIFIVE_U_PDMA_IRQ6 = 29, SIFIVE_U_PDMA_IRQ7 = 30, + SIFIVE_U_PWM0_IRQ0 = 42, + SIFIVE_U_PWM0_IRQ1 = 43, + SIFIVE_U_PWM0_IRQ2 = 44, + SIFIVE_U_PWM0_IRQ3 = 45, + SIFIVE_U_PWM1_IRQ0 = 46, + SIFIVE_U_PWM1_IRQ1 = 47, + SIFIVE_U_PWM1_IRQ2 = 48, + SIFIVE_U_PWM1_IRQ3 = 49, SIFIVE_U_QSPI0_IRQ = 51, SIFIVE_U_GEM_IRQ = 53 }; From cc63a18282d8e8cd96d8bf26c29cad2e879ff9f6 Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Tue, 31 Aug 2021 16:36:00 +0530 Subject: [PATCH 10/21] hw/intc: Rename sifive_clint sources to riscv_aclint sources We will be upgrading SiFive CLINT implementation into RISC-V ACLINT implementation so let's first rename the sources. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Bin Meng Message-id: 20210831110603.338681-2-anup.patel@wdc.com Signed-off-by: Alistair Francis --- hw/intc/Kconfig | 2 +- hw/intc/meson.build | 2 +- hw/intc/{sifive_clint.c => riscv_aclint.c} | 2 +- hw/riscv/Kconfig | 12 ++++++------ hw/riscv/microchip_pfsoc.c | 2 +- hw/riscv/shakti_c.c | 2 +- hw/riscv/sifive_e.c | 2 +- hw/riscv/sifive_u.c | 2 +- hw/riscv/spike.c | 2 +- hw/riscv/virt.c | 2 +- include/hw/intc/{sifive_clint.h => riscv_aclint.h} | 0 11 files changed, 15 insertions(+), 15 deletions(-) rename hw/intc/{sifive_clint.c => riscv_aclint.c} (99%) rename include/hw/intc/{sifive_clint.h => riscv_aclint.h} (100%) diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index f4694088a4..78aed93c45 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -62,7 +62,7 @@ config RX_ICU config LOONGSON_LIOINTC bool -config SIFIVE_CLINT +config RISCV_ACLINT bool config SIFIVE_PLIC diff --git a/hw/intc/meson.build b/hw/intc/meson.build index 4dcfea6aa8..a1d00aa48d 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -47,7 +47,7 @@ specific_ss.add(when: 'CONFIG_RX_ICU', if_true: files('rx_icu.c')) specific_ss.add(when: 'CONFIG_S390_FLIC', if_true: files('s390_flic.c')) specific_ss.add(when: 'CONFIG_S390_FLIC_KVM', if_true: files('s390_flic_kvm.c')) specific_ss.add(when: 'CONFIG_SH_INTC', if_true: files('sh_intc.c')) -specific_ss.add(when: 'CONFIG_SIFIVE_CLINT', if_true: files('sifive_clint.c')) +specific_ss.add(when: 'CONFIG_RISCV_ACLINT', if_true: files('riscv_aclint.c')) specific_ss.add(when: 'CONFIG_SIFIVE_PLIC', if_true: files('sifive_plic.c')) specific_ss.add(when: 'CONFIG_XICS', if_true: files('xics.c')) specific_ss.add(when: ['CONFIG_KVM', 'CONFIG_XICS'], diff --git a/hw/intc/sifive_clint.c b/hw/intc/riscv_aclint.c similarity index 99% rename from hw/intc/sifive_clint.c rename to hw/intc/riscv_aclint.c index ab172d8e40..31ce990d0e 100644 --- a/hw/intc/sifive_clint.c +++ b/hw/intc/riscv_aclint.c @@ -26,7 +26,7 @@ #include "hw/sysbus.h" #include "target/riscv/cpu.h" #include "hw/qdev-properties.h" -#include "hw/intc/sifive_clint.h" +#include "hw/intc/riscv_aclint.h" #include "qemu/timer.h" #include "hw/irq.h" diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig index d56c339ef6..d2d869aaad 100644 --- a/hw/riscv/Kconfig +++ b/hw/riscv/Kconfig @@ -12,7 +12,7 @@ config MICROCHIP_PFSOC select MCHP_PFSOC_MMUART select MCHP_PFSOC_SYSREG select MSI_NONBROKEN - select SIFIVE_CLINT + select RISCV_ACLINT select SIFIVE_PDMA select SIFIVE_PLIC select UNIMP @@ -26,7 +26,7 @@ config SHAKTI_C bool select UNIMP select SHAKTI_UART - select SIFIVE_CLINT + select RISCV_ACLINT select SIFIVE_PLIC config RISCV_VIRT @@ -41,7 +41,7 @@ config RISCV_VIRT select PCI_EXPRESS_GENERIC_BRIDGE select PFLASH_CFI01 select SERIAL - select SIFIVE_CLINT + select RISCV_ACLINT select SIFIVE_PLIC select SIFIVE_TEST select VIRTIO_MMIO @@ -50,7 +50,7 @@ config RISCV_VIRT config SIFIVE_E bool select MSI_NONBROKEN - select SIFIVE_CLINT + select RISCV_ACLINT select SIFIVE_GPIO select SIFIVE_PLIC select SIFIVE_UART @@ -61,7 +61,7 @@ config SIFIVE_U bool select CADENCE select MSI_NONBROKEN - select SIFIVE_CLINT + select RISCV_ACLINT select SIFIVE_GPIO select SIFIVE_PDMA select SIFIVE_PLIC @@ -79,5 +79,5 @@ config SPIKE select RISCV_NUMA select HTIF select MSI_NONBROKEN - select SIFIVE_CLINT + select RISCV_ACLINT select SIFIVE_PLIC diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c index eef55f69fd..eed9e81355 100644 --- a/hw/riscv/microchip_pfsoc.c +++ b/hw/riscv/microchip_pfsoc.c @@ -49,7 +49,7 @@ #include "hw/riscv/boot.h" #include "hw/riscv/riscv_hart.h" #include "hw/riscv/microchip_pfsoc.h" -#include "hw/intc/sifive_clint.h" +#include "hw/intc/riscv_aclint.h" #include "hw/intc/sifive_plic.h" #include "sysemu/device_tree.h" #include "sysemu/sysemu.h" diff --git a/hw/riscv/shakti_c.c b/hw/riscv/shakti_c.c index 09d4e1433e..f9f0a45651 100644 --- a/hw/riscv/shakti_c.c +++ b/hw/riscv/shakti_c.c @@ -21,7 +21,7 @@ #include "hw/riscv/shakti_c.h" #include "qapi/error.h" #include "hw/intc/sifive_plic.h" -#include "hw/intc/sifive_clint.h" +#include "hw/intc/riscv_aclint.h" #include "sysemu/sysemu.h" #include "hw/qdev-properties.h" #include "exec/address-spaces.h" diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c index 04265c5640..a73848958e 100644 --- a/hw/riscv/sifive_e.c +++ b/hw/riscv/sifive_e.c @@ -41,7 +41,7 @@ #include "hw/riscv/sifive_e.h" #include "hw/riscv/boot.h" #include "hw/char/sifive_uart.h" -#include "hw/intc/sifive_clint.h" +#include "hw/intc/riscv_aclint.h" #include "hw/intc/sifive_plic.h" #include "hw/misc/sifive_e_prci.h" #include "chardev/char.h" diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index f4cde10667..aaab46c43c 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -52,7 +52,7 @@ #include "hw/riscv/sifive_u.h" #include "hw/riscv/boot.h" #include "hw/char/sifive_uart.h" -#include "hw/intc/sifive_clint.h" +#include "hw/intc/riscv_aclint.h" #include "hw/intc/sifive_plic.h" #include "chardev/char.h" #include "net/eth.h" diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c index aae36f2cb4..690c19c12a 100644 --- a/hw/riscv/spike.c +++ b/hw/riscv/spike.c @@ -35,7 +35,7 @@ #include "hw/riscv/boot.h" #include "hw/riscv/numa.h" #include "hw/char/riscv_htif.h" -#include "hw/intc/sifive_clint.h" +#include "hw/intc/riscv_aclint.h" #include "chardev/char.h" #include "sysemu/device_tree.h" #include "sysemu/sysemu.h" diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 47f1beb473..df33fd74c2 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -32,7 +32,7 @@ #include "hw/riscv/virt.h" #include "hw/riscv/boot.h" #include "hw/riscv/numa.h" -#include "hw/intc/sifive_clint.h" +#include "hw/intc/riscv_aclint.h" #include "hw/intc/sifive_plic.h" #include "hw/misc/sifive_test.h" #include "chardev/char.h" diff --git a/include/hw/intc/sifive_clint.h b/include/hw/intc/riscv_aclint.h similarity index 100% rename from include/hw/intc/sifive_clint.h rename to include/hw/intc/riscv_aclint.h From b8fb878aa2485fd41502295f0ff5362a67c8ba68 Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Tue, 31 Aug 2021 16:36:01 +0530 Subject: [PATCH 11/21] hw/intc: Upgrade the SiFive CLINT implementation to RISC-V ACLINT The RISC-V ACLINT is more modular and backward compatible with original SiFive CLINT so instead of duplicating the original SiFive CLINT implementation we upgrade the current SiFive CLINT implementation to RISC-V ACLINT implementation. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Bin Meng Message-id: 20210831110603.338681-3-anup.patel@wdc.com Signed-off-by: Alistair Francis --- hw/intc/riscv_aclint.c | 373 +++++++++++++++++++++++---------- hw/riscv/microchip_pfsoc.c | 9 +- hw/riscv/shakti_c.c | 11 +- hw/riscv/sifive_e.c | 11 +- hw/riscv/sifive_u.c | 9 +- hw/riscv/spike.c | 14 +- hw/riscv/virt.c | 14 +- include/hw/intc/riscv_aclint.h | 54 +++-- 8 files changed, 339 insertions(+), 156 deletions(-) diff --git a/hw/intc/riscv_aclint.c b/hw/intc/riscv_aclint.c index 31ce990d0e..f1a5d3d284 100644 --- a/hw/intc/riscv_aclint.c +++ b/hw/intc/riscv_aclint.c @@ -1,8 +1,10 @@ /* - * SiFive CLINT (Core Local Interruptor) + * RISC-V ACLINT (Advanced Core Local Interruptor) + * URL: https://github.com/riscv/riscv-aclint * * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu * Copyright (c) 2017 SiFive, Inc. + * Copyright (c) 2021 Western Digital Corporation or its affiliates. * * This provides real-time clock, timer and interprocessor interrupts. * @@ -22,6 +24,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/error-report.h" +#include "qemu/log.h" #include "qemu/module.h" #include "hw/sysbus.h" #include "target/riscv/cpu.h" @@ -30,10 +33,10 @@ #include "qemu/timer.h" #include "hw/irq.h" -typedef struct sifive_clint_callback { - SiFiveCLINTState *s; +typedef struct riscv_aclint_mtimer_callback { + RISCVAclintMTimerState *s; int num; -} sifive_clint_callback; +} riscv_aclint_mtimer_callback; static uint64_t cpu_riscv_read_rtc(uint32_t timebase_freq) { @@ -45,10 +48,11 @@ static uint64_t cpu_riscv_read_rtc(uint32_t timebase_freq) * Called when timecmp is written to update the QEMU timer or immediately * trigger timer interrupt if mtimecmp <= current timer value. */ -static void sifive_clint_write_timecmp(SiFiveCLINTState *s, RISCVCPU *cpu, - int hartid, - uint64_t value, - uint32_t timebase_freq) +static void riscv_aclint_mtimer_write_timecmp(RISCVAclintMTimerState *mtimer, + RISCVCPU *cpu, + int hartid, + uint64_t value, + uint32_t timebase_freq) { uint64_t next; uint64_t diff; @@ -57,14 +61,16 @@ static void sifive_clint_write_timecmp(SiFiveCLINTState *s, RISCVCPU *cpu, cpu->env.timecmp = value; if (cpu->env.timecmp <= rtc_r) { - /* if we're setting an MTIMECMP value in the "past", - immediately raise the timer interrupt */ - qemu_irq_raise(s->timer_irqs[hartid - s->hartid_base]); + /* + * If we're setting an MTIMECMP value in the "past", + * immediately raise the timer interrupt + */ + qemu_irq_raise(mtimer->timer_irqs[hartid - mtimer->hartid_base]); return; } /* otherwise, set up the future timer interrupt */ - qemu_irq_lower(s->timer_irqs[hartid - s->hartid_base]); + qemu_irq_lower(mtimer->timer_irqs[hartid - mtimer->hartid_base]); diff = cpu->env.timecmp - rtc_r; /* back to ns (note args switched in muldiv64) */ uint64_t ns_diff = muldiv64(diff, NANOSECONDS_PER_SECOND, timebase_freq); @@ -97,38 +103,28 @@ static void sifive_clint_write_timecmp(SiFiveCLINTState *s, RISCVCPU *cpu, * Callback used when the timer set using timer_mod expires. * Should raise the timer interrupt line */ -static void sifive_clint_timer_cb(void *opaque) +static void riscv_aclint_mtimer_cb(void *opaque) { - sifive_clint_callback *state = opaque; + riscv_aclint_mtimer_callback *state = opaque; qemu_irq_raise(state->s->timer_irqs[state->num]); } -/* CPU wants to read rtc or timecmp register */ -static uint64_t sifive_clint_read(void *opaque, hwaddr addr, unsigned size) +/* CPU read MTIMER register */ +static uint64_t riscv_aclint_mtimer_read(void *opaque, hwaddr addr, + unsigned size) { - SiFiveCLINTState *clint = opaque; - if (addr >= clint->sip_base && - addr < clint->sip_base + (clint->num_harts << 2)) { - size_t hartid = clint->hartid_base + ((addr - clint->sip_base) >> 2); + RISCVAclintMTimerState *mtimer = opaque; + + if (addr >= mtimer->timecmp_base && + addr < (mtimer->timecmp_base + (mtimer->num_harts << 3))) { + size_t hartid = mtimer->hartid_base + + ((addr - mtimer->timecmp_base) >> 3); CPUState *cpu = qemu_get_cpu(hartid); CPURISCVState *env = cpu ? cpu->env_ptr : NULL; if (!env) { - error_report("clint: invalid timecmp hartid: %zu", hartid); - } else if ((addr & 0x3) == 0) { - return (env->mip & MIP_MSIP) > 0; - } else { - error_report("clint: invalid read: %08x", (uint32_t)addr); - return 0; - } - } else if (addr >= clint->timecmp_base && - addr < clint->timecmp_base + (clint->num_harts << 3)) { - size_t hartid = clint->hartid_base + - ((addr - clint->timecmp_base) >> 3); - CPUState *cpu = qemu_get_cpu(hartid); - CPURISCVState *env = cpu ? cpu->env_ptr : NULL; - if (!env) { - error_report("clint: invalid timecmp hartid: %zu", hartid); + qemu_log_mask(LOG_GUEST_ERROR, + "aclint-mtimer: invalid hartid: %zu", hartid); } else if ((addr & 0x7) == 0) { /* timecmp_lo */ uint64_t timecmp = env->timecmp; @@ -138,79 +134,76 @@ static uint64_t sifive_clint_read(void *opaque, hwaddr addr, unsigned size) uint64_t timecmp = env->timecmp; return (timecmp >> 32) & 0xFFFFFFFF; } else { - error_report("clint: invalid read: %08x", (uint32_t)addr); + qemu_log_mask(LOG_UNIMP, + "aclint-mtimer: invalid read: %08x", (uint32_t)addr); return 0; } - } else if (addr == clint->time_base) { + } else if (addr == mtimer->time_base) { /* time_lo */ - return cpu_riscv_read_rtc(clint->timebase_freq) & 0xFFFFFFFF; - } else if (addr == clint->time_base + 4) { + return cpu_riscv_read_rtc(mtimer->timebase_freq) & 0xFFFFFFFF; + } else if (addr == mtimer->time_base + 4) { /* time_hi */ - return (cpu_riscv_read_rtc(clint->timebase_freq) >> 32) & 0xFFFFFFFF; + return (cpu_riscv_read_rtc(mtimer->timebase_freq) >> 32) & 0xFFFFFFFF; } - error_report("clint: invalid read: %08x", (uint32_t)addr); + qemu_log_mask(LOG_UNIMP, + "aclint-mtimer: invalid read: %08x", (uint32_t)addr); return 0; } -/* CPU wrote to rtc or timecmp register */ -static void sifive_clint_write(void *opaque, hwaddr addr, uint64_t value, - unsigned size) +/* CPU write MTIMER register */ +static void riscv_aclint_mtimer_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size) { - SiFiveCLINTState *clint = opaque; + RISCVAclintMTimerState *mtimer = opaque; - if (addr >= clint->sip_base && - addr < clint->sip_base + (clint->num_harts << 2)) { - size_t hartid = clint->hartid_base + ((addr - clint->sip_base) >> 2); + if (addr >= mtimer->timecmp_base && + addr < (mtimer->timecmp_base + (mtimer->num_harts << 3))) { + size_t hartid = mtimer->hartid_base + + ((addr - mtimer->timecmp_base) >> 3); CPUState *cpu = qemu_get_cpu(hartid); CPURISCVState *env = cpu ? cpu->env_ptr : NULL; if (!env) { - error_report("clint: invalid timecmp hartid: %zu", hartid); - } else if ((addr & 0x3) == 0) { - qemu_set_irq(clint->soft_irqs[hartid - clint->hartid_base], value); - } else { - error_report("clint: invalid sip write: %08x", (uint32_t)addr); - } - return; - } else if (addr >= clint->timecmp_base && - addr < clint->timecmp_base + (clint->num_harts << 3)) { - size_t hartid = clint->hartid_base + - ((addr - clint->timecmp_base) >> 3); - CPUState *cpu = qemu_get_cpu(hartid); - CPURISCVState *env = cpu ? cpu->env_ptr : NULL; - if (!env) { - error_report("clint: invalid timecmp hartid: %zu", hartid); + qemu_log_mask(LOG_GUEST_ERROR, + "aclint-mtimer: invalid hartid: %zu", hartid); } else if ((addr & 0x7) == 0) { /* timecmp_lo */ uint64_t timecmp_hi = env->timecmp >> 32; - sifive_clint_write_timecmp(clint, RISCV_CPU(cpu), hartid, - timecmp_hi << 32 | (value & 0xFFFFFFFF), clint->timebase_freq); + riscv_aclint_mtimer_write_timecmp(mtimer, RISCV_CPU(cpu), hartid, + timecmp_hi << 32 | (value & 0xFFFFFFFF), + mtimer->timebase_freq); return; } else if ((addr & 0x7) == 4) { /* timecmp_hi */ uint64_t timecmp_lo = env->timecmp; - sifive_clint_write_timecmp(clint, RISCV_CPU(cpu), hartid, - value << 32 | (timecmp_lo & 0xFFFFFFFF), clint->timebase_freq); + riscv_aclint_mtimer_write_timecmp(mtimer, RISCV_CPU(cpu), hartid, + value << 32 | (timecmp_lo & 0xFFFFFFFF), + mtimer->timebase_freq); } else { - error_report("clint: invalid timecmp write: %08x", (uint32_t)addr); + qemu_log_mask(LOG_UNIMP, + "aclint-mtimer: invalid timecmp write: %08x", + (uint32_t)addr); } return; - } else if (addr == clint->time_base) { + } else if (addr == mtimer->time_base) { /* time_lo */ - error_report("clint: time_lo write not implemented"); + qemu_log_mask(LOG_UNIMP, + "aclint-mtimer: time_lo write not implemented"); return; - } else if (addr == clint->time_base + 4) { + } else if (addr == mtimer->time_base + 4) { /* time_hi */ - error_report("clint: time_hi write not implemented"); + qemu_log_mask(LOG_UNIMP, + "aclint-mtimer: time_hi write not implemented"); return; } - error_report("clint: invalid write: %08x", (uint32_t)addr); + qemu_log_mask(LOG_UNIMP, + "aclint-mtimer: invalid write: %08x", (uint32_t)addr); } -static const MemoryRegionOps sifive_clint_ops = { - .read = sifive_clint_read, - .write = sifive_clint_write, +static const MemoryRegionOps riscv_aclint_mtimer_ops = { + .read = riscv_aclint_mtimer_read, + .write = riscv_aclint_mtimer_write, .endianness = DEVICE_LITTLE_ENDIAN, .valid = { .min_access_size = 4, @@ -218,66 +211,75 @@ static const MemoryRegionOps sifive_clint_ops = { } }; -static Property sifive_clint_properties[] = { - DEFINE_PROP_UINT32("hartid-base", SiFiveCLINTState, hartid_base, 0), - DEFINE_PROP_UINT32("num-harts", SiFiveCLINTState, num_harts, 0), - DEFINE_PROP_UINT32("sip-base", SiFiveCLINTState, sip_base, 0), - DEFINE_PROP_UINT32("timecmp-base", SiFiveCLINTState, timecmp_base, 0), - DEFINE_PROP_UINT32("time-base", SiFiveCLINTState, time_base, 0), - DEFINE_PROP_UINT32("aperture-size", SiFiveCLINTState, aperture_size, 0), - DEFINE_PROP_UINT32("timebase-freq", SiFiveCLINTState, timebase_freq, 0), +static Property riscv_aclint_mtimer_properties[] = { + DEFINE_PROP_UINT32("hartid-base", RISCVAclintMTimerState, + hartid_base, 0), + DEFINE_PROP_UINT32("num-harts", RISCVAclintMTimerState, num_harts, 1), + DEFINE_PROP_UINT32("timecmp-base", RISCVAclintMTimerState, + timecmp_base, RISCV_ACLINT_DEFAULT_MTIMECMP), + DEFINE_PROP_UINT32("time-base", RISCVAclintMTimerState, + time_base, RISCV_ACLINT_DEFAULT_MTIME), + DEFINE_PROP_UINT32("aperture-size", RISCVAclintMTimerState, + aperture_size, RISCV_ACLINT_DEFAULT_MTIMER_SIZE), + DEFINE_PROP_UINT32("timebase-freq", RISCVAclintMTimerState, + timebase_freq, 0), DEFINE_PROP_END_OF_LIST(), }; -static void sifive_clint_realize(DeviceState *dev, Error **errp) +static void riscv_aclint_mtimer_realize(DeviceState *dev, Error **errp) { - SiFiveCLINTState *s = SIFIVE_CLINT(dev); - memory_region_init_io(&s->mmio, OBJECT(dev), &sifive_clint_ops, s, - TYPE_SIFIVE_CLINT, s->aperture_size); + RISCVAclintMTimerState *s = RISCV_ACLINT_MTIMER(dev); + int i; + + memory_region_init_io(&s->mmio, OBJECT(dev), &riscv_aclint_mtimer_ops, + s, TYPE_RISCV_ACLINT_MTIMER, s->aperture_size); sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mmio); s->timer_irqs = g_malloc(sizeof(qemu_irq) * s->num_harts); qdev_init_gpio_out(dev, s->timer_irqs, s->num_harts); - s->soft_irqs = g_malloc(sizeof(qemu_irq) * s->num_harts); - qdev_init_gpio_out(dev, s->soft_irqs, s->num_harts); + /* Claim timer interrupt bits */ + for (i = 0; i < s->num_harts; i++) { + RISCVCPU *cpu = RISCV_CPU(qemu_get_cpu(s->hartid_base + i)); + if (riscv_cpu_claim_interrupts(cpu, MIP_MTIP) < 0) { + error_report("MTIP already claimed"); + exit(1); + } + } } -static void sifive_clint_class_init(ObjectClass *klass, void *data) +static void riscv_aclint_mtimer_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); - dc->realize = sifive_clint_realize; - device_class_set_props(dc, sifive_clint_properties); + dc->realize = riscv_aclint_mtimer_realize; + device_class_set_props(dc, riscv_aclint_mtimer_properties); } -static const TypeInfo sifive_clint_info = { - .name = TYPE_SIFIVE_CLINT, +static const TypeInfo riscv_aclint_mtimer_info = { + .name = TYPE_RISCV_ACLINT_MTIMER, .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(SiFiveCLINTState), - .class_init = sifive_clint_class_init, + .instance_size = sizeof(RISCVAclintMTimerState), + .class_init = riscv_aclint_mtimer_class_init, }; -static void sifive_clint_register_types(void) -{ - type_register_static(&sifive_clint_info); -} - -type_init(sifive_clint_register_types) - /* - * Create CLINT device. + * Create ACLINT MTIMER device. */ -DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, - uint32_t hartid_base, uint32_t num_harts, uint32_t sip_base, +DeviceState *riscv_aclint_mtimer_create(hwaddr addr, hwaddr size, + uint32_t hartid_base, uint32_t num_harts, uint32_t timecmp_base, uint32_t time_base, uint32_t timebase_freq, bool provide_rdtime) { int i; + DeviceState *dev = qdev_new(TYPE_RISCV_ACLINT_MTIMER); + + assert(num_harts <= RISCV_ACLINT_MAX_HARTS); + assert(!(addr & 0x7)); + assert(!(timecmp_base & 0x7)); + assert(!(time_base & 0x7)); - DeviceState *dev = qdev_new(TYPE_SIFIVE_CLINT); qdev_prop_set_uint32(dev, "hartid-base", hartid_base); qdev_prop_set_uint32(dev, "num-harts", num_harts); - qdev_prop_set_uint32(dev, "sip-base", sip_base); qdev_prop_set_uint32(dev, "timecmp-base", timecmp_base); qdev_prop_set_uint32(dev, "time-base", time_base); qdev_prop_set_uint32(dev, "aperture-size", size); @@ -289,7 +291,8 @@ DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, CPUState *cpu = qemu_get_cpu(hartid_base + i); RISCVCPU *rvcpu = RISCV_CPU(cpu); CPURISCVState *env = cpu ? cpu->env_ptr : NULL; - sifive_clint_callback *cb = g_malloc0(sizeof(sifive_clint_callback)); + riscv_aclint_mtimer_callback *cb = + g_malloc0(sizeof(riscv_aclint_mtimer_callback)); if (!env) { g_free(cb); @@ -299,17 +302,159 @@ DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, riscv_cpu_set_rdtime_fn(env, cpu_riscv_read_rtc, timebase_freq); } - cb->s = SIFIVE_CLINT(dev); + cb->s = RISCV_ACLINT_MTIMER(dev); cb->num = i; env->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, - &sifive_clint_timer_cb, cb); + &riscv_aclint_mtimer_cb, cb); env->timecmp = 0; qdev_connect_gpio_out(dev, i, qdev_get_gpio_in(DEVICE(rvcpu), IRQ_M_TIMER)); - qdev_connect_gpio_out(dev, num_harts + i, - qdev_get_gpio_in(DEVICE(rvcpu), IRQ_M_SOFT)); } return dev; } + +/* CPU read [M|S]SWI register */ +static uint64_t riscv_aclint_swi_read(void *opaque, hwaddr addr, + unsigned size) +{ + RISCVAclintSwiState *swi = opaque; + + if (addr < (swi->num_harts << 2)) { + size_t hartid = swi->hartid_base + (addr >> 2); + CPUState *cpu = qemu_get_cpu(hartid); + CPURISCVState *env = cpu ? cpu->env_ptr : NULL; + if (!env) { + qemu_log_mask(LOG_GUEST_ERROR, + "aclint-swi: invalid hartid: %zu", hartid); + } else if ((addr & 0x3) == 0) { + return (swi->sswi) ? 0 : ((env->mip & MIP_MSIP) > 0); + } + } + + qemu_log_mask(LOG_UNIMP, + "aclint-swi: invalid read: %08x", (uint32_t)addr); + return 0; +} + +/* CPU write [M|S]SWI register */ +static void riscv_aclint_swi_write(void *opaque, hwaddr addr, uint64_t value, + unsigned size) +{ + RISCVAclintSwiState *swi = opaque; + + if (addr < (swi->num_harts << 2)) { + size_t hartid = swi->hartid_base + (addr >> 2); + CPUState *cpu = qemu_get_cpu(hartid); + CPURISCVState *env = cpu ? cpu->env_ptr : NULL; + if (!env) { + qemu_log_mask(LOG_GUEST_ERROR, + "aclint-swi: invalid hartid: %zu", hartid); + } else if ((addr & 0x3) == 0) { + if (value & 0x1) { + qemu_irq_raise(swi->soft_irqs[hartid - swi->hartid_base]); + } else { + if (!swi->sswi) { + qemu_irq_lower(swi->soft_irqs[hartid - swi->hartid_base]); + } + } + return; + } + } + + qemu_log_mask(LOG_UNIMP, + "aclint-swi: invalid write: %08x", (uint32_t)addr); +} + +static const MemoryRegionOps riscv_aclint_swi_ops = { + .read = riscv_aclint_swi_read, + .write = riscv_aclint_swi_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4 + } +}; + +static Property riscv_aclint_swi_properties[] = { + DEFINE_PROP_UINT32("hartid-base", RISCVAclintSwiState, hartid_base, 0), + DEFINE_PROP_UINT32("num-harts", RISCVAclintSwiState, num_harts, 1), + DEFINE_PROP_UINT32("sswi", RISCVAclintSwiState, sswi, false), + DEFINE_PROP_END_OF_LIST(), +}; + +static void riscv_aclint_swi_realize(DeviceState *dev, Error **errp) +{ + RISCVAclintSwiState *swi = RISCV_ACLINT_SWI(dev); + int i; + + memory_region_init_io(&swi->mmio, OBJECT(dev), &riscv_aclint_swi_ops, swi, + TYPE_RISCV_ACLINT_SWI, RISCV_ACLINT_SWI_SIZE); + sysbus_init_mmio(SYS_BUS_DEVICE(dev), &swi->mmio); + + swi->soft_irqs = g_malloc(sizeof(qemu_irq) * swi->num_harts); + qdev_init_gpio_out(dev, swi->soft_irqs, swi->num_harts); + + /* Claim software interrupt bits */ + for (i = 0; i < swi->num_harts; i++) { + RISCVCPU *cpu = RISCV_CPU(qemu_get_cpu(swi->hartid_base + i)); + /* We don't claim mip.SSIP because it is writeable by software */ + if (riscv_cpu_claim_interrupts(cpu, swi->sswi ? 0 : MIP_MSIP) < 0) { + error_report("MSIP already claimed"); + exit(1); + } + } +} + +static void riscv_aclint_swi_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + dc->realize = riscv_aclint_swi_realize; + device_class_set_props(dc, riscv_aclint_swi_properties); +} + +static const TypeInfo riscv_aclint_swi_info = { + .name = TYPE_RISCV_ACLINT_SWI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(RISCVAclintSwiState), + .class_init = riscv_aclint_swi_class_init, +}; + +/* + * Create ACLINT [M|S]SWI device. + */ +DeviceState *riscv_aclint_swi_create(hwaddr addr, uint32_t hartid_base, + uint32_t num_harts, bool sswi) +{ + int i; + DeviceState *dev = qdev_new(TYPE_RISCV_ACLINT_SWI); + + assert(num_harts <= RISCV_ACLINT_MAX_HARTS); + assert(!(addr & 0x3)); + + qdev_prop_set_uint32(dev, "hartid-base", hartid_base); + qdev_prop_set_uint32(dev, "num-harts", num_harts); + qdev_prop_set_uint32(dev, "sswi", sswi ? true : false); + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, addr); + + for (i = 0; i < num_harts; i++) { + CPUState *cpu = qemu_get_cpu(hartid_base + i); + RISCVCPU *rvcpu = RISCV_CPU(cpu); + + qdev_connect_gpio_out(dev, i, + qdev_get_gpio_in(DEVICE(rvcpu), + (sswi) ? IRQ_S_SOFT : IRQ_M_SOFT)); + } + + return dev; +} + +static void riscv_aclint_register_types(void) +{ + type_register_static(&riscv_aclint_mtimer_info); + type_register_static(&riscv_aclint_swi_info); +} + +type_init(riscv_aclint_register_types) diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c index eed9e81355..e475b6d511 100644 --- a/hw/riscv/microchip_pfsoc.c +++ b/hw/riscv/microchip_pfsoc.c @@ -234,9 +234,12 @@ static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp) memmap[MICROCHIP_PFSOC_BUSERR_UNIT4].size); /* CLINT */ - sifive_clint_create(memmap[MICROCHIP_PFSOC_CLINT].base, - memmap[MICROCHIP_PFSOC_CLINT].size, 0, ms->smp.cpus, - SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, + riscv_aclint_swi_create(memmap[MICROCHIP_PFSOC_CLINT].base, + 0, ms->smp.cpus, false); + riscv_aclint_mtimer_create( + memmap[MICROCHIP_PFSOC_CLINT].base + RISCV_ACLINT_SWI_SIZE, + RISCV_ACLINT_DEFAULT_MTIMER_SIZE, 0, ms->smp.cpus, + RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, CLINT_TIMEBASE_FREQ, false); /* L2 cache controller */ diff --git a/hw/riscv/shakti_c.c b/hw/riscv/shakti_c.c index f9f0a45651..2f084d3c8d 100644 --- a/hw/riscv/shakti_c.c +++ b/hw/riscv/shakti_c.c @@ -124,10 +124,13 @@ static void shakti_c_soc_state_realize(DeviceState *dev, Error **errp) SHAKTI_C_PLIC_CONTEXT_STRIDE, shakti_c_memmap[SHAKTI_C_PLIC].size); - sifive_clint_create(shakti_c_memmap[SHAKTI_C_CLINT].base, - shakti_c_memmap[SHAKTI_C_CLINT].size, 0, 1, - SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, - SIFIVE_CLINT_TIMEBASE_FREQ, false); + riscv_aclint_swi_create(shakti_c_memmap[SHAKTI_C_CLINT].base, + 0, 1, false); + riscv_aclint_mtimer_create(shakti_c_memmap[SHAKTI_C_CLINT].base + + RISCV_ACLINT_SWI_SIZE, + RISCV_ACLINT_DEFAULT_MTIMER_SIZE, 0, 1, + RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, + RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, false); qdev_prop_set_chr(DEVICE(&(sss->uart)), "chardev", serial_hd(0)); if (!sysbus_realize(SYS_BUS_DEVICE(&sss->uart), errp)) { diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c index a73848958e..6e95ea5896 100644 --- a/hw/riscv/sifive_e.c +++ b/hw/riscv/sifive_e.c @@ -207,10 +207,13 @@ static void sifive_e_soc_realize(DeviceState *dev, Error **errp) SIFIVE_E_PLIC_CONTEXT_BASE, SIFIVE_E_PLIC_CONTEXT_STRIDE, memmap[SIFIVE_E_DEV_PLIC].size); - sifive_clint_create(memmap[SIFIVE_E_DEV_CLINT].base, - memmap[SIFIVE_E_DEV_CLINT].size, 0, ms->smp.cpus, - SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, - SIFIVE_CLINT_TIMEBASE_FREQ, false); + riscv_aclint_swi_create(memmap[SIFIVE_E_DEV_CLINT].base, + 0, ms->smp.cpus, false); + riscv_aclint_mtimer_create(memmap[SIFIVE_E_DEV_CLINT].base + + RISCV_ACLINT_SWI_SIZE, + RISCV_ACLINT_DEFAULT_MTIMER_SIZE, 0, ms->smp.cpus, + RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, + RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, false); create_unimplemented_device("riscv.sifive.e.aon", memmap[SIFIVE_E_DEV_AON].base, memmap[SIFIVE_E_DEV_AON].size); sifive_e_prci_create(memmap[SIFIVE_E_DEV_PRCI].base); diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index aaab46c43c..fc5790b8ce 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -884,9 +884,12 @@ static void sifive_u_soc_realize(DeviceState *dev, Error **errp) serial_hd(0), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART0_IRQ)); sifive_uart_create(system_memory, memmap[SIFIVE_U_DEV_UART1].base, serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART1_IRQ)); - sifive_clint_create(memmap[SIFIVE_U_DEV_CLINT].base, - memmap[SIFIVE_U_DEV_CLINT].size, 0, ms->smp.cpus, - SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, + riscv_aclint_swi_create(memmap[SIFIVE_U_DEV_CLINT].base, 0, + ms->smp.cpus, false); + riscv_aclint_mtimer_create(memmap[SIFIVE_U_DEV_CLINT].base + + RISCV_ACLINT_SWI_SIZE, + RISCV_ACLINT_DEFAULT_MTIMER_SIZE, 0, ms->smp.cpus, + RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, CLINT_TIMEBASE_FREQ, false); if (!sysbus_realize(SYS_BUS_DEVICE(&s->prci), errp)) { diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c index 690c19c12a..79ae355ae2 100644 --- a/hw/riscv/spike.c +++ b/hw/riscv/spike.c @@ -84,7 +84,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap, qemu_fdt_add_subnode(fdt, "/cpus"); qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", - SIFIVE_CLINT_TIMEBASE_FREQ); + RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ); qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); qemu_fdt_add_subnode(fdt, "/cpus/cpu-map"); @@ -227,11 +227,15 @@ static void spike_board_init(MachineState *machine) sysbus_realize(SYS_BUS_DEVICE(&s->soc[i]), &error_abort); /* Core Local Interruptor (timer and IPI) for each socket */ - sifive_clint_create( + riscv_aclint_swi_create( memmap[SPIKE_CLINT].base + i * memmap[SPIKE_CLINT].size, - memmap[SPIKE_CLINT].size, base_hartid, hart_count, - SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, - SIFIVE_CLINT_TIMEBASE_FREQ, false); + base_hartid, hart_count, false); + riscv_aclint_mtimer_create( + memmap[SPIKE_CLINT].base + i * memmap[SPIKE_CLINT].size + + RISCV_ACLINT_SWI_SIZE, + RISCV_ACLINT_DEFAULT_MTIMER_SIZE, base_hartid, hart_count, + RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, + RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, false); } /* register system main memory (actual RAM) */ diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index df33fd74c2..1cd7ac1546 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -228,7 +228,7 @@ static void create_fdt(RISCVVirtState *s, const MemMapEntry *memmap, qemu_fdt_add_subnode(fdt, "/cpus"); qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", - SIFIVE_CLINT_TIMEBASE_FREQ); + RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ); qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); qemu_fdt_add_subnode(fdt, "/cpus/cpu-map"); @@ -613,11 +613,15 @@ static void virt_machine_init(MachineState *machine) sysbus_realize(SYS_BUS_DEVICE(&s->soc[i]), &error_abort); /* Per-socket CLINT */ - sifive_clint_create( + riscv_aclint_swi_create( memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size, - memmap[VIRT_CLINT].size, base_hartid, hart_count, - SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, - SIFIVE_CLINT_TIMEBASE_FREQ, true); + base_hartid, hart_count, false); + riscv_aclint_mtimer_create( + memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size + + RISCV_ACLINT_SWI_SIZE, + RISCV_ACLINT_DEFAULT_MTIMER_SIZE, base_hartid, hart_count, + RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, + RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, true); /* Per-socket PLIC hart topology configuration string */ plic_hart_config = plic_hart_config_string(hart_count); diff --git a/include/hw/intc/riscv_aclint.h b/include/hw/intc/riscv_aclint.h index 921b1561dd..229bd08d25 100644 --- a/include/hw/intc/riscv_aclint.h +++ b/include/hw/intc/riscv_aclint.h @@ -1,8 +1,9 @@ /* - * SiFive CLINT (Core Local Interruptor) interface + * RISC-V ACLINT (Advanced Core Local Interruptor) interface * * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu * Copyright (c) 2017 SiFive, Inc. + * Copyright (c) 2021 Western Digital Corporation or its affiliates. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -17,17 +18,17 @@ * this program. If not, see . */ -#ifndef HW_SIFIVE_CLINT_H -#define HW_SIFIVE_CLINT_H +#ifndef HW_RISCV_ACLINT_H +#define HW_RISCV_ACLINT_H #include "hw/sysbus.h" -#define TYPE_SIFIVE_CLINT "riscv.sifive.clint" +#define TYPE_RISCV_ACLINT_MTIMER "riscv.aclint.mtimer" -#define SIFIVE_CLINT(obj) \ - OBJECT_CHECK(SiFiveCLINTState, (obj), TYPE_SIFIVE_CLINT) +#define RISCV_ACLINT_MTIMER(obj) \ + OBJECT_CHECK(RISCVAclintMTimerState, (obj), TYPE_RISCV_ACLINT_MTIMER) -typedef struct SiFiveCLINTState { +typedef struct RISCVAclintMTimerState { /*< private >*/ SysBusDevice parent_obj; @@ -35,28 +36,45 @@ typedef struct SiFiveCLINTState { MemoryRegion mmio; uint32_t hartid_base; uint32_t num_harts; - uint32_t sip_base; uint32_t timecmp_base; uint32_t time_base; uint32_t aperture_size; uint32_t timebase_freq; qemu_irq *timer_irqs; - qemu_irq *soft_irqs; -} SiFiveCLINTState; +} RISCVAclintMTimerState; -DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, - uint32_t hartid_base, uint32_t num_harts, uint32_t sip_base, +DeviceState *riscv_aclint_mtimer_create(hwaddr addr, hwaddr size, + uint32_t hartid_base, uint32_t num_harts, uint32_t timecmp_base, uint32_t time_base, uint32_t timebase_freq, bool provide_rdtime); -enum { - SIFIVE_SIP_BASE = 0x0, - SIFIVE_TIMECMP_BASE = 0x4000, - SIFIVE_TIME_BASE = 0xBFF8 -}; +#define TYPE_RISCV_ACLINT_SWI "riscv.aclint.swi" + +#define RISCV_ACLINT_SWI(obj) \ + OBJECT_CHECK(RISCVAclintSwiState, (obj), TYPE_RISCV_ACLINT_SWI) + +typedef struct RISCVAclintSwiState { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + MemoryRegion mmio; + uint32_t hartid_base; + uint32_t num_harts; + uint32_t sswi; + qemu_irq *soft_irqs; +} RISCVAclintSwiState; + +DeviceState *riscv_aclint_swi_create(hwaddr addr, uint32_t hartid_base, + uint32_t num_harts, bool sswi); enum { - SIFIVE_CLINT_TIMEBASE_FREQ = 10000000 + RISCV_ACLINT_DEFAULT_MTIMECMP = 0x0, + RISCV_ACLINT_DEFAULT_MTIME = 0x7ff8, + RISCV_ACLINT_DEFAULT_MTIMER_SIZE = 0x8000, + RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ = 10000000, + RISCV_ACLINT_MAX_HARTS = 4095, + RISCV_ACLINT_SWI_SIZE = 0x4000 }; #endif From 0ffc1a95222f4f7323b8569745f0ef6e71719310 Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Tue, 31 Aug 2021 16:36:02 +0530 Subject: [PATCH 12/21] hw/riscv: virt: Re-factor FDT generation We re-factor and break the FDT generation into smaller functions so that it is easier to modify FDT generation for different configurations of virt machine. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Bin Meng Message-id: 20210831110603.338681-4-anup.patel@wdc.com Signed-off-by: Alistair Francis --- hw/riscv/virt.c | 517 ++++++++++++++++++++++++++++++------------------ 1 file changed, 322 insertions(+), 195 deletions(-) diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 1cd7ac1546..7f716901ef 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -176,214 +176,262 @@ static void create_pcie_irq_map(void *fdt, char *nodename, 0x1800, 0, 0, 0x7); } -static void create_fdt(RISCVVirtState *s, const MemMapEntry *memmap, - uint64_t mem_size, const char *cmdline, bool is_32_bit) +static void create_fdt_socket_cpus(RISCVVirtState *s, int socket, + char *clust_name, uint32_t *phandle, + bool is_32_bit, uint32_t *intc_phandles) { - void *fdt; - int i, cpu, socket; + int cpu; + uint32_t cpu_phandle; MachineState *mc = MACHINE(s); + char *name, *cpu_name, *core_name, *intc_name; + + for (cpu = s->soc[socket].num_harts - 1; cpu >= 0; cpu--) { + cpu_phandle = (*phandle)++; + + cpu_name = g_strdup_printf("/cpus/cpu@%d", + s->soc[socket].hartid_base + cpu); + qemu_fdt_add_subnode(mc->fdt, cpu_name); + qemu_fdt_setprop_string(mc->fdt, cpu_name, "mmu-type", + (is_32_bit) ? "riscv,sv32" : "riscv,sv48"); + name = riscv_isa_string(&s->soc[socket].harts[cpu]); + qemu_fdt_setprop_string(mc->fdt, cpu_name, "riscv,isa", name); + g_free(name); + qemu_fdt_setprop_string(mc->fdt, cpu_name, "compatible", "riscv"); + qemu_fdt_setprop_string(mc->fdt, cpu_name, "status", "okay"); + qemu_fdt_setprop_cell(mc->fdt, cpu_name, "reg", + s->soc[socket].hartid_base + cpu); + qemu_fdt_setprop_string(mc->fdt, cpu_name, "device_type", "cpu"); + riscv_socket_fdt_write_id(mc, mc->fdt, cpu_name, socket); + qemu_fdt_setprop_cell(mc->fdt, cpu_name, "phandle", cpu_phandle); + + intc_phandles[cpu] = (*phandle)++; + + intc_name = g_strdup_printf("%s/interrupt-controller", cpu_name); + qemu_fdt_add_subnode(mc->fdt, intc_name); + qemu_fdt_setprop_cell(mc->fdt, intc_name, "phandle", + intc_phandles[cpu]); + qemu_fdt_setprop_string(mc->fdt, intc_name, "compatible", + "riscv,cpu-intc"); + qemu_fdt_setprop(mc->fdt, intc_name, "interrupt-controller", NULL, 0); + qemu_fdt_setprop_cell(mc->fdt, intc_name, "#interrupt-cells", 1); + + core_name = g_strdup_printf("%s/core%d", clust_name, cpu); + qemu_fdt_add_subnode(mc->fdt, core_name); + qemu_fdt_setprop_cell(mc->fdt, core_name, "cpu", cpu_phandle); + + g_free(core_name); + g_free(intc_name); + g_free(cpu_name); + } +} + +static void create_fdt_socket_memory(RISCVVirtState *s, + const MemMapEntry *memmap, int socket) +{ + char *mem_name; uint64_t addr, size; - uint32_t *clint_cells, *plic_cells; - unsigned long clint_addr, plic_addr; - uint32_t plic_phandle[MAX_NODES]; - uint32_t cpu_phandle, intc_phandle, test_phandle; - uint32_t phandle = 1, plic_mmio_phandle = 1; - uint32_t plic_pcie_phandle = 1, plic_virtio_phandle = 1; - char *mem_name, *cpu_name, *core_name, *intc_name; - char *name, *clint_name, *plic_name, *clust_name; - hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2; - hwaddr flashbase = virt_memmap[VIRT_FLASH].base; + MachineState *mc = MACHINE(s); + + addr = memmap[VIRT_DRAM].base + riscv_socket_mem_offset(mc, socket); + size = riscv_socket_mem_size(mc, socket); + mem_name = g_strdup_printf("/memory@%lx", (long)addr); + qemu_fdt_add_subnode(mc->fdt, mem_name); + qemu_fdt_setprop_cells(mc->fdt, mem_name, "reg", + addr >> 32, addr, size >> 32, size); + qemu_fdt_setprop_string(mc->fdt, mem_name, "device_type", "memory"); + riscv_socket_fdt_write_id(mc, mc->fdt, mem_name, socket); + g_free(mem_name); +} + +static void create_fdt_socket_clint(RISCVVirtState *s, + const MemMapEntry *memmap, int socket, + uint32_t *intc_phandles) +{ + int cpu; + char *clint_name; + uint32_t *clint_cells; + unsigned long clint_addr; + MachineState *mc = MACHINE(s); static const char * const clint_compat[2] = { "sifive,clint0", "riscv,clint0" }; + + clint_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4); + + for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) { + clint_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandles[cpu]); + clint_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT); + clint_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandles[cpu]); + clint_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER); + } + + clint_addr = memmap[VIRT_CLINT].base + (memmap[VIRT_CLINT].size * socket); + clint_name = g_strdup_printf("/soc/clint@%lx", clint_addr); + qemu_fdt_add_subnode(mc->fdt, clint_name); + qemu_fdt_setprop_string_array(mc->fdt, clint_name, "compatible", + (char **)&clint_compat, + ARRAY_SIZE(clint_compat)); + qemu_fdt_setprop_cells(mc->fdt, clint_name, "reg", + 0x0, clint_addr, 0x0, memmap[VIRT_CLINT].size); + qemu_fdt_setprop(mc->fdt, clint_name, "interrupts-extended", + clint_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4); + riscv_socket_fdt_write_id(mc, mc->fdt, clint_name, socket); + g_free(clint_name); + + g_free(clint_cells); +} + +static void create_fdt_socket_plic(RISCVVirtState *s, + const MemMapEntry *memmap, int socket, + uint32_t *phandle, uint32_t *intc_phandles, + uint32_t *plic_phandles) +{ + int cpu; + char *plic_name; + uint32_t *plic_cells; + unsigned long plic_addr; + MachineState *mc = MACHINE(s); static const char * const plic_compat[2] = { "sifive,plic-1.0.0", "riscv,plic0" }; - if (mc->dtb) { - fdt = mc->fdt = load_device_tree(mc->dtb, &s->fdt_size); - if (!fdt) { - error_report("load_device_tree() failed"); - exit(1); - } - goto update_bootargs; - } else { - fdt = mc->fdt = create_device_tree(&s->fdt_size); - if (!fdt) { - error_report("create_device_tree() failed"); - exit(1); - } + plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4); + + for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) { + plic_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandles[cpu]); + plic_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT); + plic_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandles[cpu]); + plic_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT); } - qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu"); - qemu_fdt_setprop_string(fdt, "/", "compatible", "riscv-virtio"); - qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2); - qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2); + plic_phandles[socket] = (*phandle)++; + plic_addr = memmap[VIRT_PLIC].base + (memmap[VIRT_PLIC].size * socket); + plic_name = g_strdup_printf("/soc/plic@%lx", plic_addr); + qemu_fdt_add_subnode(mc->fdt, plic_name); + qemu_fdt_setprop_cell(mc->fdt, plic_name, + "#address-cells", FDT_PLIC_ADDR_CELLS); + qemu_fdt_setprop_cell(mc->fdt, plic_name, + "#interrupt-cells", FDT_PLIC_INT_CELLS); + qemu_fdt_setprop_string_array(mc->fdt, plic_name, "compatible", + (char **)&plic_compat, + ARRAY_SIZE(plic_compat)); + qemu_fdt_setprop(mc->fdt, plic_name, "interrupt-controller", NULL, 0); + qemu_fdt_setprop(mc->fdt, plic_name, "interrupts-extended", + plic_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4); + qemu_fdt_setprop_cells(mc->fdt, plic_name, "reg", + 0x0, plic_addr, 0x0, memmap[VIRT_PLIC].size); + qemu_fdt_setprop_cell(mc->fdt, plic_name, "riscv,ndev", VIRTIO_NDEV); + riscv_socket_fdt_write_id(mc, mc->fdt, plic_name, socket); + qemu_fdt_setprop_cell(mc->fdt, plic_name, "phandle", + plic_phandles[socket]); + g_free(plic_name); - qemu_fdt_add_subnode(fdt, "/soc"); - qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0); - qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus"); - qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2); - qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2); + g_free(plic_cells); +} - qemu_fdt_add_subnode(fdt, "/cpus"); - qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", +static void create_fdt_sockets(RISCVVirtState *s, const MemMapEntry *memmap, + bool is_32_bit, uint32_t *phandle, + uint32_t *irq_mmio_phandle, + uint32_t *irq_pcie_phandle, + uint32_t *irq_virtio_phandle) +{ + int socket; + char *clust_name; + uint32_t *intc_phandles; + MachineState *mc = MACHINE(s); + uint32_t xplic_phandles[MAX_NODES]; + + qemu_fdt_add_subnode(mc->fdt, "/cpus"); + qemu_fdt_setprop_cell(mc->fdt, "/cpus", "timebase-frequency", RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ); - qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); - qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); - qemu_fdt_add_subnode(fdt, "/cpus/cpu-map"); + qemu_fdt_setprop_cell(mc->fdt, "/cpus", "#size-cells", 0x0); + qemu_fdt_setprop_cell(mc->fdt, "/cpus", "#address-cells", 0x1); + qemu_fdt_add_subnode(mc->fdt, "/cpus/cpu-map"); for (socket = (riscv_socket_count(mc) - 1); socket >= 0; socket--) { clust_name = g_strdup_printf("/cpus/cpu-map/cluster%d", socket); - qemu_fdt_add_subnode(fdt, clust_name); + qemu_fdt_add_subnode(mc->fdt, clust_name); - plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4); - clint_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4); + intc_phandles = g_new0(uint32_t, s->soc[socket].num_harts); - for (cpu = s->soc[socket].num_harts - 1; cpu >= 0; cpu--) { - cpu_phandle = phandle++; + create_fdt_socket_cpus(s, socket, clust_name, phandle, + is_32_bit, intc_phandles); - cpu_name = g_strdup_printf("/cpus/cpu@%d", - s->soc[socket].hartid_base + cpu); - qemu_fdt_add_subnode(fdt, cpu_name); - if (is_32_bit) { - qemu_fdt_setprop_string(fdt, cpu_name, "mmu-type", "riscv,sv32"); - } else { - qemu_fdt_setprop_string(fdt, cpu_name, "mmu-type", "riscv,sv48"); - } - name = riscv_isa_string(&s->soc[socket].harts[cpu]); - qemu_fdt_setprop_string(fdt, cpu_name, "riscv,isa", name); - g_free(name); - qemu_fdt_setprop_string(fdt, cpu_name, "compatible", "riscv"); - qemu_fdt_setprop_string(fdt, cpu_name, "status", "okay"); - qemu_fdt_setprop_cell(fdt, cpu_name, "reg", - s->soc[socket].hartid_base + cpu); - qemu_fdt_setprop_string(fdt, cpu_name, "device_type", "cpu"); - riscv_socket_fdt_write_id(mc, fdt, cpu_name, socket); - qemu_fdt_setprop_cell(fdt, cpu_name, "phandle", cpu_phandle); + create_fdt_socket_memory(s, memmap, socket); - intc_name = g_strdup_printf("%s/interrupt-controller", cpu_name); - qemu_fdt_add_subnode(fdt, intc_name); - intc_phandle = phandle++; - qemu_fdt_setprop_cell(fdt, intc_name, "phandle", intc_phandle); - qemu_fdt_setprop_string(fdt, intc_name, "compatible", - "riscv,cpu-intc"); - qemu_fdt_setprop(fdt, intc_name, "interrupt-controller", NULL, 0); - qemu_fdt_setprop_cell(fdt, intc_name, "#interrupt-cells", 1); + create_fdt_socket_clint(s, memmap, socket, intc_phandles); - clint_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); - clint_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT); - clint_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); - clint_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER); + create_fdt_socket_plic(s, memmap, socket, phandle, + intc_phandles, xplic_phandles); - plic_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); - plic_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT); - plic_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); - plic_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT); - - core_name = g_strdup_printf("%s/core%d", clust_name, cpu); - qemu_fdt_add_subnode(fdt, core_name); - qemu_fdt_setprop_cell(fdt, core_name, "cpu", cpu_phandle); - - g_free(core_name); - g_free(intc_name); - g_free(cpu_name); - } - - addr = memmap[VIRT_DRAM].base + riscv_socket_mem_offset(mc, socket); - size = riscv_socket_mem_size(mc, socket); - mem_name = g_strdup_printf("/memory@%lx", (long)addr); - qemu_fdt_add_subnode(fdt, mem_name); - qemu_fdt_setprop_cells(fdt, mem_name, "reg", - addr >> 32, addr, size >> 32, size); - qemu_fdt_setprop_string(fdt, mem_name, "device_type", "memory"); - riscv_socket_fdt_write_id(mc, fdt, mem_name, socket); - g_free(mem_name); - - clint_addr = memmap[VIRT_CLINT].base + - (memmap[VIRT_CLINT].size * socket); - clint_name = g_strdup_printf("/soc/clint@%lx", clint_addr); - qemu_fdt_add_subnode(fdt, clint_name); - qemu_fdt_setprop_string_array(fdt, clint_name, "compatible", - (char **)&clint_compat, ARRAY_SIZE(clint_compat)); - qemu_fdt_setprop_cells(fdt, clint_name, "reg", - 0x0, clint_addr, 0x0, memmap[VIRT_CLINT].size); - qemu_fdt_setprop(fdt, clint_name, "interrupts-extended", - clint_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4); - riscv_socket_fdt_write_id(mc, fdt, clint_name, socket); - g_free(clint_name); - - plic_phandle[socket] = phandle++; - plic_addr = memmap[VIRT_PLIC].base + (memmap[VIRT_PLIC].size * socket); - plic_name = g_strdup_printf("/soc/plic@%lx", plic_addr); - qemu_fdt_add_subnode(fdt, plic_name); - qemu_fdt_setprop_cell(fdt, plic_name, - "#address-cells", FDT_PLIC_ADDR_CELLS); - qemu_fdt_setprop_cell(fdt, plic_name, - "#interrupt-cells", FDT_PLIC_INT_CELLS); - qemu_fdt_setprop_string_array(fdt, plic_name, "compatible", - (char **)&plic_compat, ARRAY_SIZE(plic_compat)); - qemu_fdt_setprop(fdt, plic_name, "interrupt-controller", NULL, 0); - qemu_fdt_setprop(fdt, plic_name, "interrupts-extended", - plic_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4); - qemu_fdt_setprop_cells(fdt, plic_name, "reg", - 0x0, plic_addr, 0x0, memmap[VIRT_PLIC].size); - qemu_fdt_setprop_cell(fdt, plic_name, "riscv,ndev", VIRTIO_NDEV); - riscv_socket_fdt_write_id(mc, fdt, plic_name, socket); - qemu_fdt_setprop_cell(fdt, plic_name, "phandle", plic_phandle[socket]); - g_free(plic_name); - - g_free(clint_cells); - g_free(plic_cells); + g_free(intc_phandles); g_free(clust_name); } for (socket = 0; socket < riscv_socket_count(mc); socket++) { if (socket == 0) { - plic_mmio_phandle = plic_phandle[socket]; - plic_virtio_phandle = plic_phandle[socket]; - plic_pcie_phandle = plic_phandle[socket]; + *irq_mmio_phandle = xplic_phandles[socket]; + *irq_virtio_phandle = xplic_phandles[socket]; + *irq_pcie_phandle = xplic_phandles[socket]; } if (socket == 1) { - plic_virtio_phandle = plic_phandle[socket]; - plic_pcie_phandle = plic_phandle[socket]; + *irq_virtio_phandle = xplic_phandles[socket]; + *irq_pcie_phandle = xplic_phandles[socket]; } if (socket == 2) { - plic_pcie_phandle = plic_phandle[socket]; + *irq_pcie_phandle = xplic_phandles[socket]; } } - riscv_socket_fdt_write_distance_matrix(mc, fdt); + riscv_socket_fdt_write_distance_matrix(mc, mc->fdt); +} + +static void create_fdt_virtio(RISCVVirtState *s, const MemMapEntry *memmap, + uint32_t irq_virtio_phandle) +{ + int i; + char *name; + MachineState *mc = MACHINE(s); for (i = 0; i < VIRTIO_COUNT; i++) { name = g_strdup_printf("/soc/virtio_mmio@%lx", (long)(memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size)); - qemu_fdt_add_subnode(fdt, name); - qemu_fdt_setprop_string(fdt, name, "compatible", "virtio,mmio"); - qemu_fdt_setprop_cells(fdt, name, "reg", + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", "virtio,mmio"); + qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0, memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, 0x0, memmap[VIRT_VIRTIO].size); - qemu_fdt_setprop_cell(fdt, name, "interrupt-parent", - plic_virtio_phandle); - qemu_fdt_setprop_cell(fdt, name, "interrupts", VIRTIO_IRQ + i); + qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent", + irq_virtio_phandle); + qemu_fdt_setprop_cell(mc->fdt, name, "interrupts", VIRTIO_IRQ + i); g_free(name); } +} + +static void create_fdt_pcie(RISCVVirtState *s, const MemMapEntry *memmap, + uint32_t irq_pcie_phandle) +{ + char *name; + MachineState *mc = MACHINE(s); name = g_strdup_printf("/soc/pci@%lx", (long) memmap[VIRT_PCIE_ECAM].base); - qemu_fdt_add_subnode(fdt, name); - qemu_fdt_setprop_cell(fdt, name, "#address-cells", FDT_PCI_ADDR_CELLS); - qemu_fdt_setprop_cell(fdt, name, "#interrupt-cells", FDT_PCI_INT_CELLS); - qemu_fdt_setprop_cell(fdt, name, "#size-cells", 0x2); - qemu_fdt_setprop_string(fdt, name, "compatible", "pci-host-ecam-generic"); - qemu_fdt_setprop_string(fdt, name, "device_type", "pci"); - qemu_fdt_setprop_cell(fdt, name, "linux,pci-domain", 0); - qemu_fdt_setprop_cells(fdt, name, "bus-range", 0, + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_cell(mc->fdt, name, "#address-cells", + FDT_PCI_ADDR_CELLS); + qemu_fdt_setprop_cell(mc->fdt, name, "#interrupt-cells", + FDT_PCI_INT_CELLS); + qemu_fdt_setprop_cell(mc->fdt, name, "#size-cells", 0x2); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", + "pci-host-ecam-generic"); + qemu_fdt_setprop_string(mc->fdt, name, "device_type", "pci"); + qemu_fdt_setprop_cell(mc->fdt, name, "linux,pci-domain", 0); + qemu_fdt_setprop_cells(mc->fdt, name, "bus-range", 0, memmap[VIRT_PCIE_ECAM].size / PCIE_MMCFG_SIZE_MIN - 1); - qemu_fdt_setprop(fdt, name, "dma-coherent", NULL, 0); - qemu_fdt_setprop_cells(fdt, name, "reg", 0, + qemu_fdt_setprop(mc->fdt, name, "dma-coherent", NULL, 0); + qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0, memmap[VIRT_PCIE_ECAM].base, 0, memmap[VIRT_PCIE_ECAM].size); - qemu_fdt_setprop_sized_cells(fdt, name, "ranges", + qemu_fdt_setprop_sized_cells(mc->fdt, name, "ranges", 1, FDT_PCI_RANGE_IOPORT, 2, 0, 2, memmap[VIRT_PCIE_PIO].base, 2, memmap[VIRT_PCIE_PIO].size, 1, FDT_PCI_RANGE_MMIO, @@ -393,66 +441,96 @@ static void create_fdt(RISCVVirtState *s, const MemMapEntry *memmap, 2, virt_high_pcie_memmap.base, 2, virt_high_pcie_memmap.base, 2, virt_high_pcie_memmap.size); - create_pcie_irq_map(fdt, name, plic_pcie_phandle); + create_pcie_irq_map(mc->fdt, name, irq_pcie_phandle); g_free(name); +} - test_phandle = phandle++; +static void create_fdt_reset(RISCVVirtState *s, const MemMapEntry *memmap, + uint32_t *phandle) +{ + char *name; + uint32_t test_phandle; + MachineState *mc = MACHINE(s); + + test_phandle = (*phandle)++; name = g_strdup_printf("/soc/test@%lx", (long)memmap[VIRT_TEST].base); - qemu_fdt_add_subnode(fdt, name); + qemu_fdt_add_subnode(mc->fdt, name); { static const char * const compat[3] = { "sifive,test1", "sifive,test0", "syscon" }; - qemu_fdt_setprop_string_array(fdt, name, "compatible", (char **)&compat, - ARRAY_SIZE(compat)); + qemu_fdt_setprop_string_array(mc->fdt, name, "compatible", + (char **)&compat, ARRAY_SIZE(compat)); } - qemu_fdt_setprop_cells(fdt, name, "reg", - 0x0, memmap[VIRT_TEST].base, - 0x0, memmap[VIRT_TEST].size); - qemu_fdt_setprop_cell(fdt, name, "phandle", test_phandle); - test_phandle = qemu_fdt_get_phandle(fdt, name); + qemu_fdt_setprop_cells(mc->fdt, name, "reg", + 0x0, memmap[VIRT_TEST].base, 0x0, memmap[VIRT_TEST].size); + qemu_fdt_setprop_cell(mc->fdt, name, "phandle", test_phandle); + test_phandle = qemu_fdt_get_phandle(mc->fdt, name); g_free(name); name = g_strdup_printf("/soc/reboot"); - qemu_fdt_add_subnode(fdt, name); - qemu_fdt_setprop_string(fdt, name, "compatible", "syscon-reboot"); - qemu_fdt_setprop_cell(fdt, name, "regmap", test_phandle); - qemu_fdt_setprop_cell(fdt, name, "offset", 0x0); - qemu_fdt_setprop_cell(fdt, name, "value", FINISHER_RESET); + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", "syscon-reboot"); + qemu_fdt_setprop_cell(mc->fdt, name, "regmap", test_phandle); + qemu_fdt_setprop_cell(mc->fdt, name, "offset", 0x0); + qemu_fdt_setprop_cell(mc->fdt, name, "value", FINISHER_RESET); g_free(name); name = g_strdup_printf("/soc/poweroff"); - qemu_fdt_add_subnode(fdt, name); - qemu_fdt_setprop_string(fdt, name, "compatible", "syscon-poweroff"); - qemu_fdt_setprop_cell(fdt, name, "regmap", test_phandle); - qemu_fdt_setprop_cell(fdt, name, "offset", 0x0); - qemu_fdt_setprop_cell(fdt, name, "value", FINISHER_PASS); + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", "syscon-poweroff"); + qemu_fdt_setprop_cell(mc->fdt, name, "regmap", test_phandle); + qemu_fdt_setprop_cell(mc->fdt, name, "offset", 0x0); + qemu_fdt_setprop_cell(mc->fdt, name, "value", FINISHER_PASS); g_free(name); +} + +static void create_fdt_uart(RISCVVirtState *s, const MemMapEntry *memmap, + uint32_t irq_mmio_phandle) +{ + char *name; + MachineState *mc = MACHINE(s); name = g_strdup_printf("/soc/uart@%lx", (long)memmap[VIRT_UART0].base); - qemu_fdt_add_subnode(fdt, name); - qemu_fdt_setprop_string(fdt, name, "compatible", "ns16550a"); - qemu_fdt_setprop_cells(fdt, name, "reg", + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", "ns16550a"); + qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0x0, memmap[VIRT_UART0].base, 0x0, memmap[VIRT_UART0].size); - qemu_fdt_setprop_cell(fdt, name, "clock-frequency", 3686400); - qemu_fdt_setprop_cell(fdt, name, "interrupt-parent", plic_mmio_phandle); - qemu_fdt_setprop_cell(fdt, name, "interrupts", UART0_IRQ); + qemu_fdt_setprop_cell(mc->fdt, name, "clock-frequency", 3686400); + qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent", irq_mmio_phandle); + qemu_fdt_setprop_cell(mc->fdt, name, "interrupts", UART0_IRQ); - qemu_fdt_add_subnode(fdt, "/chosen"); - qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", name); + qemu_fdt_add_subnode(mc->fdt, "/chosen"); + qemu_fdt_setprop_string(mc->fdt, "/chosen", "stdout-path", name); g_free(name); +} + +static void create_fdt_rtc(RISCVVirtState *s, const MemMapEntry *memmap, + uint32_t irq_mmio_phandle) +{ + char *name; + MachineState *mc = MACHINE(s); name = g_strdup_printf("/soc/rtc@%lx", (long)memmap[VIRT_RTC].base); - qemu_fdt_add_subnode(fdt, name); - qemu_fdt_setprop_string(fdt, name, "compatible", "google,goldfish-rtc"); - qemu_fdt_setprop_cells(fdt, name, "reg", - 0x0, memmap[VIRT_RTC].base, - 0x0, memmap[VIRT_RTC].size); - qemu_fdt_setprop_cell(fdt, name, "interrupt-parent", plic_mmio_phandle); - qemu_fdt_setprop_cell(fdt, name, "interrupts", RTC_IRQ); + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", + "google,goldfish-rtc"); + qemu_fdt_setprop_cells(mc->fdt, name, "reg", + 0x0, memmap[VIRT_RTC].base, 0x0, memmap[VIRT_RTC].size); + qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent", + irq_mmio_phandle); + qemu_fdt_setprop_cell(mc->fdt, name, "interrupts", RTC_IRQ); g_free(name); +} + +static void create_fdt_flash(RISCVVirtState *s, const MemMapEntry *memmap) +{ + char *name; + MachineState *mc = MACHINE(s); + hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2; + hwaddr flashbase = virt_memmap[VIRT_FLASH].base; name = g_strdup_printf("/flash@%" PRIx64, flashbase); qemu_fdt_add_subnode(mc->fdt, name); @@ -462,10 +540,59 @@ static void create_fdt(RISCVVirtState *s, const MemMapEntry *memmap, 2, flashbase + flashsize, 2, flashsize); qemu_fdt_setprop_cell(mc->fdt, name, "bank-width", 4); g_free(name); +} + +static void create_fdt(RISCVVirtState *s, const MemMapEntry *memmap, + uint64_t mem_size, const char *cmdline, bool is_32_bit) +{ + MachineState *mc = MACHINE(s); + uint32_t phandle = 1, irq_mmio_phandle = 1; + uint32_t irq_pcie_phandle = 1, irq_virtio_phandle = 1; + + if (mc->dtb) { + mc->fdt = load_device_tree(mc->dtb, &s->fdt_size); + if (!mc->fdt) { + error_report("load_device_tree() failed"); + exit(1); + } + goto update_bootargs; + } else { + mc->fdt = create_device_tree(&s->fdt_size); + if (!mc->fdt) { + error_report("create_device_tree() failed"); + exit(1); + } + } + + qemu_fdt_setprop_string(mc->fdt, "/", "model", "riscv-virtio,qemu"); + qemu_fdt_setprop_string(mc->fdt, "/", "compatible", "riscv-virtio"); + qemu_fdt_setprop_cell(mc->fdt, "/", "#size-cells", 0x2); + qemu_fdt_setprop_cell(mc->fdt, "/", "#address-cells", 0x2); + + qemu_fdt_add_subnode(mc->fdt, "/soc"); + qemu_fdt_setprop(mc->fdt, "/soc", "ranges", NULL, 0); + qemu_fdt_setprop_string(mc->fdt, "/soc", "compatible", "simple-bus"); + qemu_fdt_setprop_cell(mc->fdt, "/soc", "#size-cells", 0x2); + qemu_fdt_setprop_cell(mc->fdt, "/soc", "#address-cells", 0x2); + + create_fdt_sockets(s, memmap, is_32_bit, &phandle, + &irq_mmio_phandle, &irq_pcie_phandle, &irq_virtio_phandle); + + create_fdt_virtio(s, memmap, irq_virtio_phandle); + + create_fdt_pcie(s, memmap, irq_pcie_phandle); + + create_fdt_reset(s, memmap, &phandle); + + create_fdt_uart(s, memmap, irq_mmio_phandle); + + create_fdt_rtc(s, memmap, irq_mmio_phandle); + + create_fdt_flash(s, memmap); update_bootargs: if (cmdline) { - qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); + qemu_fdt_setprop_string(mc->fdt, "/chosen", "bootargs", cmdline); } } From 954886ea6dd496ad259f8c576a8767e1d7059a28 Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Tue, 31 Aug 2021 16:36:03 +0530 Subject: [PATCH 13/21] hw/riscv: virt: Add optional ACLINT support to virt machine We extend virt machine to emulate ACLINT devices only when "aclint=on" parameter is passed along with machine name in QEMU command-line. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Bin Meng Message-id: 20210831110603.338681-5-anup.patel@wdc.com Signed-off-by: Alistair Francis --- docs/system/riscv/virt.rst | 10 ++++ hw/riscv/virt.c | 113 ++++++++++++++++++++++++++++++++++++- include/hw/riscv/virt.h | 2 + 3 files changed, 124 insertions(+), 1 deletion(-) diff --git a/docs/system/riscv/virt.rst b/docs/system/riscv/virt.rst index 321d77e07d..fa016584bf 100644 --- a/docs/system/riscv/virt.rst +++ b/docs/system/riscv/virt.rst @@ -53,6 +53,16 @@ with the default OpenSBI firmware image as the -bios. It also supports the recommended RISC-V bootflow: U-Boot SPL (M-mode) loads OpenSBI fw_dynamic firmware and U-Boot proper (S-mode), using the standard -bios functionality. +Machine-specific options +------------------------ + +The following machine-specific options are supported: + +- aclint=[on|off] + + When this option is "on", ACLINT devices will be emulated instead of + SiFive CLINT. When not specified, this option is assumed to be "off". + Running Linux kernel -------------------- diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 7f716901ef..ec0cb69b8c 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -48,6 +48,7 @@ static const MemMapEntry virt_memmap[] = { [VIRT_TEST] = { 0x100000, 0x1000 }, [VIRT_RTC] = { 0x101000, 0x1000 }, [VIRT_CLINT] = { 0x2000000, 0x10000 }, + [VIRT_ACLINT_SSWI] = { 0x2F00000, 0x4000 }, [VIRT_PCIE_PIO] = { 0x3000000, 0x10000 }, [VIRT_PLIC] = { 0xc000000, VIRT_PLIC_SIZE(VIRT_CPUS_MAX * 2) }, [VIRT_UART0] = { 0x10000000, 0x100 }, @@ -281,6 +282,82 @@ static void create_fdt_socket_clint(RISCVVirtState *s, g_free(clint_cells); } +static void create_fdt_socket_aclint(RISCVVirtState *s, + const MemMapEntry *memmap, int socket, + uint32_t *intc_phandles) +{ + int cpu; + char *name; + unsigned long addr; + uint32_t aclint_cells_size; + uint32_t *aclint_mswi_cells; + uint32_t *aclint_sswi_cells; + uint32_t *aclint_mtimer_cells; + MachineState *mc = MACHINE(s); + + aclint_mswi_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2); + aclint_mtimer_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2); + aclint_sswi_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2); + + for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) { + aclint_mswi_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]); + aclint_mswi_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_M_SOFT); + aclint_mtimer_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]); + aclint_mtimer_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_M_TIMER); + aclint_sswi_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]); + aclint_sswi_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_S_SOFT); + } + aclint_cells_size = s->soc[socket].num_harts * sizeof(uint32_t) * 2; + + addr = memmap[VIRT_CLINT].base + (memmap[VIRT_CLINT].size * socket); + name = g_strdup_printf("/soc/mswi@%lx", addr); + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", "riscv,aclint-mswi"); + qemu_fdt_setprop_cells(mc->fdt, name, "reg", + 0x0, addr, 0x0, RISCV_ACLINT_SWI_SIZE); + qemu_fdt_setprop(mc->fdt, name, "interrupts-extended", + aclint_mswi_cells, aclint_cells_size); + qemu_fdt_setprop(mc->fdt, name, "interrupt-controller", NULL, 0); + qemu_fdt_setprop_cell(mc->fdt, name, "#interrupt-cells", 0); + riscv_socket_fdt_write_id(mc, mc->fdt, name, socket); + g_free(name); + + addr = memmap[VIRT_CLINT].base + RISCV_ACLINT_SWI_SIZE + + (memmap[VIRT_CLINT].size * socket); + name = g_strdup_printf("/soc/mtimer@%lx", addr); + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", + "riscv,aclint-mtimer"); + qemu_fdt_setprop_cells(mc->fdt, name, "reg", + 0x0, addr + RISCV_ACLINT_DEFAULT_MTIME, + 0x0, memmap[VIRT_CLINT].size - RISCV_ACLINT_SWI_SIZE - + RISCV_ACLINT_DEFAULT_MTIME, + 0x0, addr + RISCV_ACLINT_DEFAULT_MTIMECMP, + 0x0, RISCV_ACLINT_DEFAULT_MTIME); + qemu_fdt_setprop(mc->fdt, name, "interrupts-extended", + aclint_mtimer_cells, aclint_cells_size); + riscv_socket_fdt_write_id(mc, mc->fdt, name, socket); + g_free(name); + + addr = memmap[VIRT_ACLINT_SSWI].base + + (memmap[VIRT_ACLINT_SSWI].size * socket); + name = g_strdup_printf("/soc/sswi@%lx", addr); + qemu_fdt_add_subnode(mc->fdt, name); + qemu_fdt_setprop_string(mc->fdt, name, "compatible", "riscv,aclint-sswi"); + qemu_fdt_setprop_cells(mc->fdt, name, "reg", + 0x0, addr, 0x0, memmap[VIRT_ACLINT_SSWI].size); + qemu_fdt_setprop(mc->fdt, name, "interrupts-extended", + aclint_sswi_cells, aclint_cells_size); + qemu_fdt_setprop(mc->fdt, name, "interrupt-controller", NULL, 0); + qemu_fdt_setprop_cell(mc->fdt, name, "#interrupt-cells", 0); + riscv_socket_fdt_write_id(mc, mc->fdt, name, socket); + g_free(name); + + g_free(aclint_mswi_cells); + g_free(aclint_mtimer_cells); + g_free(aclint_sswi_cells); +} + static void create_fdt_socket_plic(RISCVVirtState *s, const MemMapEntry *memmap, int socket, uint32_t *phandle, uint32_t *intc_phandles, @@ -359,7 +436,11 @@ static void create_fdt_sockets(RISCVVirtState *s, const MemMapEntry *memmap, create_fdt_socket_memory(s, memmap, socket); - create_fdt_socket_clint(s, memmap, socket, intc_phandles); + if (s->have_aclint) { + create_fdt_socket_aclint(s, memmap, socket, intc_phandles); + } else { + create_fdt_socket_clint(s, memmap, socket, intc_phandles); + } create_fdt_socket_plic(s, memmap, socket, phandle, intc_phandles, xplic_phandles); @@ -750,6 +831,14 @@ static void virt_machine_init(MachineState *machine) RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, true); + /* Per-socket ACLINT SSWI */ + if (s->have_aclint) { + riscv_aclint_swi_create( + memmap[VIRT_ACLINT_SSWI].base + + i * memmap[VIRT_ACLINT_SSWI].size, + base_hartid, hart_count, true); + } + /* Per-socket PLIC hart topology configuration string */ plic_hart_config = plic_hart_config_string(hart_count); @@ -914,6 +1003,22 @@ static void virt_machine_instance_init(Object *obj) { } +static bool virt_get_aclint(Object *obj, Error **errp) +{ + MachineState *ms = MACHINE(obj); + RISCVVirtState *s = RISCV_VIRT_MACHINE(ms); + + return s->have_aclint; +} + +static void virt_set_aclint(Object *obj, bool value, Error **errp) +{ + MachineState *ms = MACHINE(obj); + RISCVVirtState *s = RISCV_VIRT_MACHINE(ms); + + s->have_aclint = value; +} + static void virt_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); @@ -929,6 +1034,12 @@ static void virt_machine_class_init(ObjectClass *oc, void *data) mc->numa_mem_supported = true; machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); + + object_class_property_add_bool(oc, "aclint", virt_get_aclint, + virt_set_aclint); + object_class_property_set_description(oc, "aclint", + "Set on/off to enable/disable " + "emulating ACLINT devices"); } static const TypeInfo virt_machine_typeinfo = { diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h index 349fee1f89..d9105c1886 100644 --- a/include/hw/riscv/virt.h +++ b/include/hw/riscv/virt.h @@ -43,6 +43,7 @@ struct RISCVVirtState { FWCfgState *fw_cfg; int fdt_size; + bool have_aclint; }; enum { @@ -51,6 +52,7 @@ enum { VIRT_TEST, VIRT_RTC, VIRT_CLINT, + VIRT_ACLINT_SSWI, VIRT_PLIC, VIRT_UART0, VIRT_VIRTIO, From de7c7988d25d3e0abfad11261b21a21d40ce255f Mon Sep 17 00:00:00 2001 From: Frank Chang Date: Sun, 12 Sep 2021 21:05:45 +0800 Subject: [PATCH 14/21] hw/dma: sifive_pdma: reset Next* registers when Control.claim is set Setting Control.claim clears all of the chanel's Next registers. This is effective only when Control.claim is set from 0 to 1. Signed-off-by: Frank Chang Tested-by: Max Hsu Reviewed-by: Bin Meng Tested-by: Bin Meng Message-id: 20210912130553.179501-2-frank.chang@sifive.com Signed-off-by: Alistair Francis --- hw/dma/sifive_pdma.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/hw/dma/sifive_pdma.c b/hw/dma/sifive_pdma.c index 9b2ac2017d..d92e27dfdc 100644 --- a/hw/dma/sifive_pdma.c +++ b/hw/dma/sifive_pdma.c @@ -54,6 +54,13 @@ #define DMA_EXEC_DST 0x110 #define DMA_EXEC_SRC 0x118 +/* + * FU540/FU740 docs are incorrect with NextConfig.wsize/rsize reset values. + * The reset values tested on Unleashed/Unmatched boards are 6 instead of 0. + */ +#define CONFIG_WRSZ_DEFAULT 6 +#define CONFIG_RDSZ_DEFAULT 6 + enum dma_chan_state { DMA_CHAN_STATE_IDLE, DMA_CHAN_STATE_STARTED, @@ -221,6 +228,7 @@ static void sifive_pdma_write(void *opaque, hwaddr offset, { SiFivePDMAState *s = opaque; int ch = SIFIVE_PDMA_CHAN_NO(offset); + bool claimed; if (ch >= SIFIVE_PDMA_CHANS) { qemu_log_mask(LOG_GUEST_ERROR, "%s: Invalid channel no %d\n", @@ -231,6 +239,17 @@ static void sifive_pdma_write(void *opaque, hwaddr offset, offset &= 0xfff; switch (offset) { case DMA_CONTROL: + claimed = !!s->chan[ch].control & CONTROL_CLAIM; + + if (!claimed && (value & CONTROL_CLAIM)) { + /* reset Next* registers */ + s->chan[ch].next_config = (CONFIG_RDSZ_DEFAULT << CONFIG_RDSZ_SHIFT) | + (CONFIG_WRSZ_DEFAULT << CONFIG_WRSZ_SHIFT); + s->chan[ch].next_bytes = 0; + s->chan[ch].next_dst = 0; + s->chan[ch].next_src = 0; + } + s->chan[ch].control = value; if (value & CONTROL_RUN) { From 9a8c26c08c3fe6c80e47b75369a34e6e7f6cd11f Mon Sep 17 00:00:00 2001 From: Frank Chang Date: Sun, 12 Sep 2021 21:05:46 +0800 Subject: [PATCH 15/21] hw/dma: sifive_pdma: claim bit must be set before DMA transactions Real PDMA must have Control.claim bit to be set before Control.run bit is set to start any DMA transactions. Otherwise nothing will be transferred. The following result is PDMA tested in U-Boot on Unmatched board: => mw.l 0x3000000 0x0 <= Disclaim channel 0 (Channel 0 is not claimed) => mw.l 0x3000004 0x55000000 <= wsize = rsize = 5 (2^5 = 32 bytes) => mw.q 0x3000008 0x2 <= NextBytes = 2 => mw.q 0x3000010 0x84000000 <= NextDestination = 0x84000000 => mw.q 0x3000018 0x84001000 <= NextSource = 0x84001000 => mw.l 0x84000000 0x87654321 <= Fill test data to dst => mw.l 0x84001000 0x12345678 <= Fill test data to src => md.l 0x84000000 1; md.l 0x84001000 1 <= Dump src/dst memory contents 84000000: 87654321 !Ce. 84001000: 12345678 xV4. => md.l 0x3000000 8 <= Dump PDMA status 03000000: 00000000 55000000 00000002 00000000 .......U........ 03000010: 84000000 00000000 84001000 00000000 ................ => mw.l 0x3000000 0x3 <= Set channel 0 run and claim bits => md.l 0x3000000 8 <= Dump PDMA status 03000000: 00000001 66000000 00000000 00000000 .......f........ 03000010: 00000000 00000000 00000000 00000000 ................ => md.l 0x84000000 1; md.l 0x84001000 1 <= Dump src/dst memory contents 84000000: 87654321 !Ce. 84001000: 12345678 xV4. Signed-off-by: Frank Chang Tested-by: Max Hsu Reviewed-by: Bin Meng Tested-by: Bin Meng Message-id: 20210912130553.179501-3-frank.chang@sifive.com Signed-off-by: Alistair Francis --- hw/dma/sifive_pdma.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/hw/dma/sifive_pdma.c b/hw/dma/sifive_pdma.c index d92e27dfdc..a8ce3e6699 100644 --- a/hw/dma/sifive_pdma.c +++ b/hw/dma/sifive_pdma.c @@ -252,6 +252,15 @@ static void sifive_pdma_write(void *opaque, hwaddr offset, s->chan[ch].control = value; + /* + * If channel was not claimed before run bit is set, + * DMA won't run. + */ + if (!claimed) { + s->chan[ch].control &= ~CONTROL_RUN; + return; + } + if (value & CONTROL_RUN) { sifive_pdma_run(s, ch); } From e22d90f5f9cac321811e8eddb97d793f5d2a1dea Mon Sep 17 00:00:00 2001 From: Green Wan Date: Sun, 12 Sep 2021 21:05:47 +0800 Subject: [PATCH 16/21] hw/dma: sifive_pdma: allow non-multiple transaction size transactions Real PDMA is able to deal with non-multiple transaction size transactions. The following result is PDMA tested in U-Boot on Unmatched board: => mw.l 0x3000000 0x0 <= Disclaim channel 0 => mw.l 0x3000000 0x1 <= Claim channel 0 => mw.l 0x3000004 0x11000000 <= wsize = rsize = 1 (2^1 = 2 bytes) => mw.q 0x3000008 0x3 <= NextBytes = 3 => mw.q 0x3000010 0x84000000 <= NextDestination = 0x84000000 => mw.q 0x3000018 0x84001000 <= NextSource = 0x84001000 => mw.l 0x84000000 0x87654321 <= Fill test data to dst => mw.l 0x84001000 0x12345678 <= Fill test data to src => md.l 0x84000000 1; md.l 0x84001000 1 <= Dump src/dst memory contents 84000000: 87654321 !Ce. 84001000: 12345678 xV4. => md.l 0x3000000 8 <= Dump PDMA status 03000000: 00000001 11000000 00000003 00000000 ................ 03000010: 84000000 00000000 84001000 00000000 ................ => mw.l 0x3000000 0x3 <= Set channel 0 run and claim bits => md.l 0x3000000 8 <= Dump PDMA status 03000000: 40000001 11000000 00000003 00000000 ...@............ 03000010: 84000000 00000000 84001000 00000000 ................ => md.l 0x84000000 1; md.l 0x84001000 1 <= Dump src/dst memory contents 84000000: 87345678 xV4. 84001000: 12345678 xV4. Signed-off-by: Green Wan Reviewed-by: Frank Chang Tested-by: Max Hsu Reviewed-by: Bin Meng Tested-by: Bin Meng Signed-off-by: Frank Chang Message-id: 20210912130553.179501-4-frank.chang@sifive.com Signed-off-by: Alistair Francis --- hw/dma/sifive_pdma.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/hw/dma/sifive_pdma.c b/hw/dma/sifive_pdma.c index a8ce3e6699..d7d2c53e97 100644 --- a/hw/dma/sifive_pdma.c +++ b/hw/dma/sifive_pdma.c @@ -74,7 +74,7 @@ static void sifive_pdma_run(SiFivePDMAState *s, int ch) uint64_t dst = s->chan[ch].next_dst; uint64_t src = s->chan[ch].next_src; uint32_t config = s->chan[ch].next_config; - int wsize, rsize, size; + int wsize, rsize, size, remainder; uint8_t buf[64]; int n; @@ -106,11 +106,7 @@ static void sifive_pdma_run(SiFivePDMAState *s, int ch) size = 6; } size = 1 << size; - - /* the bytes to transfer should be multiple of transaction size */ - if (bytes % size) { - goto error; - } + remainder = bytes % size; /* indicate a DMA transfer is started */ s->chan[ch].state = DMA_CHAN_STATE_STARTED; @@ -131,6 +127,14 @@ static void sifive_pdma_run(SiFivePDMAState *s, int ch) s->chan[ch].exec_bytes -= size; } + if (remainder) { + cpu_physical_memory_read(s->chan[ch].exec_src, buf, remainder); + cpu_physical_memory_write(s->chan[ch].exec_dst, buf, remainder); + s->chan[ch].exec_src += remainder; + s->chan[ch].exec_dst += remainder; + s->chan[ch].exec_bytes -= remainder; + } + /* indicate a DMA transfer is done */ s->chan[ch].state = DMA_CHAN_STATE_DONE; s->chan[ch].control &= ~CONTROL_RUN; From ae000c5f658d3636ebf19b7a8c819dce618780c4 Mon Sep 17 00:00:00 2001 From: Frank Chang Date: Sun, 12 Sep 2021 21:05:48 +0800 Subject: [PATCH 17/21] hw/dma: sifive_pdma: don't set Control.error if 0 bytes to transfer Real PDMA doesn't set Control.error if there are 0 bytes to be transferred. The DMA transfer is still success. The following result is PDMA tested in U-Boot on Unmatched board: => mw.l 0x3000000 0x0 <= Disclaim channel 0 => mw.l 0x3000000 0x1 <= Claim channel 0 => mw.l 0x3000004 0x55000000 <= wsize = rsize = 5 (2^5 = 32 bytes) => mw.q 0x3000008 0x0 <= NextBytes = 0 => mw.q 0x3000010 0x84000000 <= NextDestination = 0x84000000 => mw.q 0x3000018 0x84001000 <= NextSource = 0x84001000 => mw.l 0x84000000 0x87654321 <= Fill test data to dst => mw.l 0x84001000 0x12345678 <= Fill test data to src => md.l 0x84000000 1; md.l 0x84001000 1 <= Dump src/dst memory contents 84000000: 87654321 !Ce. 84001000: 12345678 xV4. => md.l 0x3000000 8 <= Dump PDMA status 03000000: 00000001 55000000 00000000 00000000 .......U........ 03000010: 84000000 00000000 84001000 00000000 ................ => mw.l 0x3000000 0x3 <= Set channel 0 run and claim bits => md.l 0x3000000 8 <= Dump PDMA status 03000000: 40000001 55000000 00000000 00000000 ...@...U........ 03000010: 84000000 00000000 84001000 00000000 ................ => md.l 0x84000000 1; md.l 0x84001000 1 <= Dump src/dst memory contents 84000000: 87654321 !Ce. 84001000: 12345678 xV4. Signed-off-by: Frank Chang Tested-by: Max Hsu Reviewed-by: Bin Meng Tested-by: Bin Meng Message-id: 20210912130553.179501-5-frank.chang@sifive.com Signed-off-by: Alistair Francis --- hw/dma/sifive_pdma.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/hw/dma/sifive_pdma.c b/hw/dma/sifive_pdma.c index d7d2c53e97..b4fd40573a 100644 --- a/hw/dma/sifive_pdma.c +++ b/hw/dma/sifive_pdma.c @@ -80,7 +80,7 @@ static void sifive_pdma_run(SiFivePDMAState *s, int ch) /* do nothing if bytes to transfer is zero */ if (!bytes) { - goto error; + goto done; } /* @@ -135,11 +135,6 @@ static void sifive_pdma_run(SiFivePDMAState *s, int ch) s->chan[ch].exec_bytes -= remainder; } - /* indicate a DMA transfer is done */ - s->chan[ch].state = DMA_CHAN_STATE_DONE; - s->chan[ch].control &= ~CONTROL_RUN; - s->chan[ch].control |= CONTROL_DONE; - /* reload exec_ registers if repeat is required */ if (s->chan[ch].next_config & CONFIG_REPEAT) { s->chan[ch].exec_bytes = bytes; @@ -147,6 +142,11 @@ static void sifive_pdma_run(SiFivePDMAState *s, int ch) s->chan[ch].exec_src = src; } +done: + /* indicate a DMA transfer is done */ + s->chan[ch].state = DMA_CHAN_STATE_DONE; + s->chan[ch].control &= ~CONTROL_RUN; + s->chan[ch].control |= CONTROL_DONE; return; error: From 758c07c9fca1ad9716820feb346cec0553968011 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Sat, 11 Sep 2021 23:34:31 +0800 Subject: [PATCH 18/21] docs/system/riscv: sifive_u: Update U-Boot instructions In U-Boot v2021.07 release, there were 2 major changes for the SiFive Unleashed board support: - Board config name was changed from sifive_fu540_defconfig to sifive_unleashed_defconfig - The generic binman tool was used to generate the FIT image (combination of U-Boot proper, DTB and OpenSBI firmware) which make the existing U-Boot instructions out of date. Update the doc with latest instructions. Signed-off-by: Bin Meng Reviewed-by: Alistair Francis Message-id: 20210911153431.10362-1-bmeng.cn@gmail.com Signed-off-by: Alistair Francis --- docs/system/riscv/sifive_u.rst | 49 ++++++++++++++++++---------------- 1 file changed, 26 insertions(+), 23 deletions(-) diff --git a/docs/system/riscv/sifive_u.rst b/docs/system/riscv/sifive_u.rst index 7c65e9c440..7b166567f9 100644 --- a/docs/system/riscv/sifive_u.rst +++ b/docs/system/riscv/sifive_u.rst @@ -210,15 +210,16 @@ command line options with ``qemu-system-riscv32``. Running U-Boot -------------- -U-Boot mainline v2021.01 release is tested at the time of writing. To build a +U-Boot mainline v2021.07 release is tested at the time of writing. To build a U-Boot mainline bootloader that can be booted by the ``sifive_u`` machine, use -the sifive_fu540_defconfig with similar commands as described above for Linux: +the sifive_unleashed_defconfig with similar commands as described above for +Linux: .. code-block:: bash $ export CROSS_COMPILE=riscv64-linux- $ export OPENSBI=/path/to/opensbi-riscv64-generic-fw_dynamic.bin - $ make sifive_fu540_defconfig + $ make sifive_unleashed_defconfig You will get spl/u-boot-spl.bin and u-boot.itb file in the build tree. @@ -313,31 +314,29 @@ board on QEMU ``sifive_u`` machine out of the box. This allows users to develop and test the recommended RISC-V boot flow with a real world use case: ZSBL (in QEMU) loads U-Boot SPL from SD card or SPI flash to L2LIM, then U-Boot SPL loads the combined payload image of OpenSBI fw_dynamic -firmware and U-Boot proper. However sometimes we want to have a quick test -of booting U-Boot on QEMU without the needs of preparing the SPI flash or -SD card images, an alternate way can be used, which is to create a U-Boot -S-mode image by modifying the configuration of U-Boot: +firmware and U-Boot proper. + +However sometimes we want to have a quick test of booting U-Boot on QEMU +without the needs of preparing the SPI flash or SD card images, an alternate +way can be used, which is to create a U-Boot S-mode image by modifying the +configuration of U-Boot: .. code-block:: bash + $ export CROSS_COMPILE=riscv64-linux- + $ make sifive_unleashed_defconfig $ make menuconfig -then manually select the following configuration in U-Boot: +then manually select the following configuration: - Device Tree Control > Provider of DTB for DT Control > Prior Stage bootloader DTB + * Device Tree Control ---> Provider of DTB for DT Control ---> Prior Stage bootloader DTB -This lets U-Boot to use the QEMU generated device tree blob. During the build, -a build error will be seen below: +and unselect the following configuration: -.. code-block:: none + * Library routines ---> Allow access to binman information in the device tree - MKIMAGE u-boot.img - ./tools/mkimage: Can't open arch/riscv/dts/hifive-unleashed-a00.dtb: No such file or directory - ./tools/mkimage: failed to build FIT - make: *** [Makefile:1440: u-boot.img] Error 1 - -The above errors can be safely ignored as we don't run U-Boot SPL under QEMU -in this alternate configuration. +This changes U-Boot to use the QEMU generated device tree blob, and bypass +running the U-Boot SPL stage. Boot the 64-bit U-Boot S-mode image directly: @@ -352,14 +351,18 @@ It's possible to create a 32-bit U-Boot S-mode image as well. .. code-block:: bash $ export CROSS_COMPILE=riscv64-linux- - $ make sifive_fu540_defconfig + $ make sifive_unleashed_defconfig $ make menuconfig then manually update the following configuration in U-Boot: - Device Tree Control > Provider of DTB for DT Control > Prior Stage bootloader DTB - RISC-V architecture > Base ISA > RV32I - Boot images > Text Base > 0x80400000 + * Device Tree Control ---> Provider of DTB for DT Control ---> Prior Stage bootloader DTB + * RISC-V architecture ---> Base ISA ---> RV32I + * Boot options ---> Boot images ---> Text Base ---> 0x80400000 + +and unselect the following configuration: + + * Library routines ---> Allow access to binman information in the device tree Use the same command line options to boot the 32-bit U-Boot S-mode image: From c6013547560c33068dca3368ca7cd74b13f1a780 Mon Sep 17 00:00:00 2001 From: Frank Chang Date: Tue, 14 Sep 2021 09:37:15 +0800 Subject: [PATCH 19/21] target/riscv: Backup/restore mstatus.SD bit when virtual register swapped When virtual registers are swapped, mstatus.SD bit should also be backed up/restored. Otherwise, mstatus.SD bit will be incorrectly kept across the world switches. Signed-off-by: Frank Chang Reviewed-by: Vincent Chen Reviewed-by: Alistair Francis Message-id: 20210914013717.881430-1-frank.chang@sifive.com [ Changes by AF: - Convert variable to a uint64_t to fix clang error ] Signed-off-by: Alistair Francis --- target/riscv/cpu_helper.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 701858d670..d41d5cd27c 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -106,9 +106,10 @@ bool riscv_cpu_fp_enabled(CPURISCVState *env) void riscv_cpu_swap_hypervisor_regs(CPURISCVState *env) { + uint64_t sd = riscv_cpu_is_32bit(env) ? MSTATUS32_SD : MSTATUS64_SD; uint64_t mstatus_mask = MSTATUS_MXR | MSTATUS_SUM | MSTATUS_FS | MSTATUS_SPP | MSTATUS_SPIE | MSTATUS_SIE | - MSTATUS64_UXL; + MSTATUS64_UXL | sd; bool current_virt = riscv_cpu_virt_enabled(env); g_assert(riscv_has_ext(env, RVH)); From db70794ea840b55256a49dcb85d836a33e7d9207 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Wed, 15 Sep 2021 16:46:01 +0800 Subject: [PATCH 20/21] target/riscv: csr: Rename HCOUNTEREN_CY and friends The macro name HCOUNTEREN_CY suggests it is for CSR HCOUNTEREN, but in fact it applies to M-mode and S-mode CSR too. Rename these macros to have the COUNTEREN_ prefix. Signed-off-by: Bin Meng Reviewed-by: Alistair Francis Message-id: 20210915084601.24304-1-bmeng.cn@gmail.com Signed-off-by: Alistair Francis --- target/riscv/cpu_bits.h | 8 ++++---- target/riscv/csr.c | 24 ++++++++++++------------ 2 files changed, 16 insertions(+), 16 deletions(-) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index ce9dcc030c..999187a9ee 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -397,10 +397,10 @@ #define HSTATUS32_WPRI 0xFF8FF87E #define HSTATUS64_WPRI 0xFFFFFFFFFF8FF87EULL -#define HCOUNTEREN_CY (1 << 0) -#define HCOUNTEREN_TM (1 << 1) -#define HCOUNTEREN_IR (1 << 2) -#define HCOUNTEREN_HPM3 (1 << 3) +#define COUNTEREN_CY (1 << 0) +#define COUNTEREN_TM (1 << 1) +#define COUNTEREN_IR (1 << 2) +#define COUNTEREN_HPM3 (1 << 3) /* Privilege modes */ #define PRV_U 0 diff --git a/target/riscv/csr.c b/target/riscv/csr.c index ba9818f6a5..23fbbd3216 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -71,20 +71,20 @@ static RISCVException ctr(CPURISCVState *env, int csrno) if (riscv_cpu_virt_enabled(env)) { switch (csrno) { case CSR_CYCLE: - if (!get_field(env->hcounteren, HCOUNTEREN_CY) && - get_field(env->mcounteren, HCOUNTEREN_CY)) { + if (!get_field(env->hcounteren, COUNTEREN_CY) && + get_field(env->mcounteren, COUNTEREN_CY)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_TIME: - if (!get_field(env->hcounteren, HCOUNTEREN_TM) && - get_field(env->mcounteren, HCOUNTEREN_TM)) { + if (!get_field(env->hcounteren, COUNTEREN_TM) && + get_field(env->mcounteren, COUNTEREN_TM)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_INSTRET: - if (!get_field(env->hcounteren, HCOUNTEREN_IR) && - get_field(env->mcounteren, HCOUNTEREN_IR)) { + if (!get_field(env->hcounteren, COUNTEREN_IR) && + get_field(env->mcounteren, COUNTEREN_IR)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; @@ -98,20 +98,20 @@ static RISCVException ctr(CPURISCVState *env, int csrno) if (riscv_cpu_is_32bit(env)) { switch (csrno) { case CSR_CYCLEH: - if (!get_field(env->hcounteren, HCOUNTEREN_CY) && - get_field(env->mcounteren, HCOUNTEREN_CY)) { + if (!get_field(env->hcounteren, COUNTEREN_CY) && + get_field(env->mcounteren, COUNTEREN_CY)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_TIMEH: - if (!get_field(env->hcounteren, HCOUNTEREN_TM) && - get_field(env->mcounteren, HCOUNTEREN_TM)) { + if (!get_field(env->hcounteren, COUNTEREN_TM) && + get_field(env->mcounteren, COUNTEREN_TM)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_INSTRETH: - if (!get_field(env->hcounteren, HCOUNTEREN_IR) && - get_field(env->mcounteren, HCOUNTEREN_IR)) { + if (!get_field(env->hcounteren, COUNTEREN_IR) && + get_field(env->mcounteren, COUNTEREN_IR)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; From ed481d9837250aa682f5156528bc923e1b214f76 Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Thu, 16 Sep 2021 14:37:38 +1000 Subject: [PATCH 21/21] hw/riscv: opentitan: Correct the USB Dev address Signed-off-by: Alistair Francis Reviewed-by: Bin Meng Message-id: d6cb4dfe75a2f536f217d7075b750ece3acb1535.1631767043.git.alistair.francis@wdc.com Signed-off-by: Alistair Francis --- hw/riscv/opentitan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c index f7cfcf1c3a..9803ae6d70 100644 --- a/hw/riscv/opentitan.c +++ b/hw/riscv/opentitan.c @@ -39,12 +39,12 @@ static const MemMapEntry ibex_memmap[] = { [IBEX_DEV_TIMER] = { 0x40100000, 0x1000 }, [IBEX_DEV_SENSOR_CTRL] = { 0x40110000, 0x1000 }, [IBEX_DEV_OTP_CTRL] = { 0x40130000, 0x4000 }, + [IBEX_DEV_USBDEV] = { 0x40150000, 0x1000 }, [IBEX_DEV_PWRMGR] = { 0x40400000, 0x1000 }, [IBEX_DEV_RSTMGR] = { 0x40410000, 0x1000 }, [IBEX_DEV_CLKMGR] = { 0x40420000, 0x1000 }, [IBEX_DEV_PINMUX] = { 0x40460000, 0x1000 }, [IBEX_DEV_PADCTRL] = { 0x40470000, 0x1000 }, - [IBEX_DEV_USBDEV] = { 0x40500000, 0x1000 }, [IBEX_DEV_FLASH_CTRL] = { 0x41000000, 0x1000 }, [IBEX_DEV_PLIC] = { 0x41010000, 0x1000 }, [IBEX_DEV_AES] = { 0x41100000, 0x1000 },