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Implement power state changes (IDLE and SLEEP) for PXA.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2762 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog 2007-05-01 01:28:01 +00:00
parent 4207117c93
commit a90b7318ba
4 changed files with 26 additions and 14 deletions
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3
cpu-all.h
View File

@ -772,7 +772,8 @@ void cpu_dump_statistics (CPUState *env, FILE *f,
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
int flags); int flags);
void cpu_abort(CPUState *env, const char *fmt, ...); void cpu_abort(CPUState *env, const char *fmt, ...)
__attribute__ ((__format__ (__printf__, 2, 3)));
extern CPUState *first_cpu; extern CPUState *first_cpu;
extern CPUState *cpu_single_env; extern CPUState *cpu_single_env;
extern int code_copy_enabled; extern int code_copy_enabled;

23
cpu-exec.c
View File

@ -279,9 +279,10 @@ int cpu_exec(CPUState *env1)
#elif defined(TARGET_ARM) #elif defined(TARGET_ARM)
if (env1->halted) { if (env1->halted) {
/* An interrupt wakes the CPU even if the I and F CPSR bits are /* An interrupt wakes the CPU even if the I and F CPSR bits are
set. */ set. We use EXITTB to silently wake CPU without causing an
if (env1->interrupt_request actual interrupt. */
& (CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD)) { if (env1->interrupt_request &
(CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB)) {
env1->halted = 0; env1->halted = 0;
} else { } else {
return EXCP_HALTED; return EXCP_HALTED;
@ -432,6 +433,15 @@ int cpu_exec(CPUState *env1)
env->exception_index = EXCP_DEBUG; env->exception_index = EXCP_DEBUG;
cpu_loop_exit(); cpu_loop_exit();
} }
#if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_MIPS) || \
defined(TARGET_PPC) || defined(TARGET_ALPHA)
if (interrupt_request & CPU_INTERRUPT_HALT) {
env->interrupt_request &= ~CPU_INTERRUPT_HALT;
env->halted = 1;
env->exception_index = EXCP_HLT;
cpu_loop_exit();
}
#endif
#if defined(TARGET_I386) #if defined(TARGET_I386)
if ((interrupt_request & CPU_INTERRUPT_SMI) && if ((interrupt_request & CPU_INTERRUPT_SMI) &&
!(env->hflags & HF_SMM_MASK)) { !(env->hflags & HF_SMM_MASK)) {
@ -514,12 +524,7 @@ int cpu_exec(CPUState *env1)
} else if (interrupt_request & CPU_INTERRUPT_TIMER) { } else if (interrupt_request & CPU_INTERRUPT_TIMER) {
//do_interrupt(0, 0, 0, 0, 0); //do_interrupt(0, 0, 0, 0, 0);
env->interrupt_request &= ~CPU_INTERRUPT_TIMER; env->interrupt_request &= ~CPU_INTERRUPT_TIMER;
} else if (interrupt_request & CPU_INTERRUPT_HALT) { }
env->interrupt_request &= ~CPU_INTERRUPT_HALT;
env->halted = 1;
env->exception_index = EXCP_HLT;
cpu_loop_exit();
}
#elif defined(TARGET_ARM) #elif defined(TARGET_ARM)
if (interrupt_request & CPU_INTERRUPT_FIQ if (interrupt_request & CPU_INTERRUPT_FIQ
&& !(env->uncached_cpsr & CPSR_F)) { && !(env->uncached_cpsr & CPSR_F)) {

3
hw/pxa2xx.c
View File

@ -247,7 +247,8 @@ static void pxa2xx_clkpwr_write(void *opaque, int op2, int reg, int crm,
goto message; goto message;
case 3: case 3:
cpu_reset(s->env); s->env->uncached_cpsr =
ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I;
s->env->cp15.c1_sys = 0; s->env->cp15.c1_sys = 0;
s->env->cp15.c1_coproc = 0; s->env->cp15.c1_coproc = 0;
s->env->cp15.c2 = 0; s->env->cp15.c2 = 0;

11
target-arm/translate.c
View File

@ -1584,7 +1584,7 @@ static int disas_cp_insn(CPUState *env, DisasContext *s, uint32_t insn)
/* Disassemble system coprocessor (cp15) instruction. Return nonzero if /* Disassemble system coprocessor (cp15) instruction. Return nonzero if
instruction is not defined. */ instruction is not defined. */
static int disas_cp15_insn(DisasContext *s, uint32_t insn) static int disas_cp15_insn(CPUState *env, DisasContext *s, uint32_t insn)
{ {
uint32_t rd; uint32_t rd;
@ -1610,8 +1610,13 @@ static int disas_cp15_insn(DisasContext *s, uint32_t insn)
} else { } else {
gen_movl_T0_reg(s, rd); gen_movl_T0_reg(s, rd);
gen_op_movl_cp15_T0(insn); gen_op_movl_cp15_T0(insn);
/* Normally we would always end the TB here, but Linux
* arch/arm/mach-pxa/sleep.S expects two instructions following
* an MMU enable to execute from cache. Imitate this behaviour. */
if (!arm_feature(env, ARM_FEATURE_XSCALE) ||
(insn & 0x0fff0fff) != 0x0e010f10)
gen_lookup_tb(s);
} }
gen_lookup_tb(s);
return 0; return 0;
} }
@ -2927,7 +2932,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s)
goto illegal_op; goto illegal_op;
break; break;
case 15: case 15:
if (disas_cp15_insn (s, insn)) if (disas_cp15_insn (env, s, insn))
goto illegal_op; goto illegal_op;
break; break;
default: default: