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c20b5c3318
linux-loongson/arch/x86/kernel
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Feng Tang c20b5c3318 x86, earlyprintk: Add earlyprintk for Intel Moorestown platform 
Intel Moorestown platform has a spi-uart device(Maxim3110),
which connects to a Designware spi core controller. This patch
will add early console function based on it.

As it will be used long before Linux spi subsystem get
initialised, we simply directly manipulate the spi controller's
register to acheive the early console func. This is safe as it
will be disabled when devices subsytem get initialised.

To use it, user need enable CONFIG_X86_MRST_EARLY_PRINTK in
kenrel config and add "earlyprintk=mrst" in kernel command line.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Cc: greg@kroah.com
LKML-Reference: <1284361736-23011-4-git-send-email-feng.tang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-10-08 10:01:47 +02:00
..
acpi ACPI: add missing __percpu markup in arch/x86/kernel/acpi/cstate.c 2010-09-28 21:38:20 -04:00
apic x86, irq: Plug memory leak in sparse irq 2010-09-30 15:57:35 -07:00
cpu Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-05 11:57:37 -07:00
.gitignore
alternative.c x86, alternatives: BUG on encountering an invalid CPU feature number 2010-07-13 14:57:50 -07:00
amd_iommu_init.c x86/amd-iommu: Work around S3 BIOS bug 2010-09-23 16:26:03 +02:00
amd_iommu.c x86/amd-iommu: Fix rounding-bug in __unmap_single 2010-09-23 16:26:20 +02:00
apb_timer.c x86, mrst: add more timer config options 2010-05-19 13:45:39 -07:00
aperture_64.c x86, gcc-4.6: Fix set but not read variables 2010-07-20 15:38:30 -07:00
apm_32.c update email address 2010-07-19 10:56:54 +02:00
asm-offsets_32.c lguest: optimize by coding restore_flags and irq_enable in assembler. 2009-06-12 22:27:03 +09:30
asm-offsets_64.c tracing: Define NR_syscalls for x86_64 2009-08-26 21:29:58 +02:00
asm-offsets.c
audit_64.c
bios_uv.c Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-02-28 11:00:55 -08:00
bootflag.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
check.c
cpuid.c x86: convert cpu notifier to return encapsulate errno value 2010-05-27 09:12:48 -07:00
crash_dump_32.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
crash_dump_64.c
crash.c x86, UV: Make kdump avoid stack dumps 2010-07-21 11:33:27 -07:00
doublefault_32.c x86: Use get_desc_base() 2009-07-19 18:27:51 +02:00
dumpstack_32.c x86: Unify dumpstack.h and stacktrace.h 2010-06-08 23:29:52 +02:00
dumpstack_64.c x86: Unify dumpstack.h and stacktrace.h 2010-06-08 23:29:52 +02:00
dumpstack.c x86: Unify dumpstack.h and stacktrace.h 2010-06-08 23:29:52 +02:00
e820.c suspend: Move NVS save/restore code to generic suspend functionality 2010-06-10 11:02:34 -04:00
early_printk_mrst.c x86, earlyprintk: Add earlyprintk for Intel Moorestown platform 2010-10-08 10:01:47 +02:00
early_printk.c x86, earlyprintk: Add earlyprintk for Intel Moorestown platform 2010-10-08 10:01:47 +02:00
early-quirks.c x86: hpet: Work around hardware stupidity 2010-09-15 00:55:13 +02:00
efi_32.c
efi_64.c x86: Make 64-bit efi_ioremap use ioremap on MMIO regions 2009-08-03 13:34:25 -07:00
efi_stub_32.S
efi_stub_64.S
efi.c x86: Remove trailing spaces in messages 2010-02-07 17:47:51 +01:00
entry_32.S Merge branch 'x86-alternatives-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-06 16:24:17 -07:00
entry_64.S Mark arguments to certain syscalls as being const 2010-08-13 16:53:13 -07:00
ftrace.c Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core 2010-02-27 10:06:10 +01:00
head32.c fix typos concerning "initiali[zs]e" 2010-06-16 18:05:05 +02:00
head64.c x86: Make sure free_init_pages() frees pages on page boundary 2010-03-29 18:55:33 +02:00
head_32.S x86-32: Separate 1:1 pagetables from swapper_pg_dir 2010-08-18 09:17:20 -07:00
head_64.S x86-64: Simplify loading initial_gs 2010-07-21 21:23:51 -07:00
head.c
hpet.c x86, hpet: Fix bogus error check in hpet_assign_irq() 2010-09-30 15:57:35 -07:00
hw_breakpoint.c x86: Fix instruction breakpoint encoding 2010-09-17 03:24:13 +02:00
i386_ksyms_32.c x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y 2009-10-01 08:42:24 +02:00
i387.c Merge branch 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2010-08-22 11:27:36 -07:00
i8237.c
i8253.c i8253: Convert i8253_lock to raw_spinlock 2010-03-02 10:28:38 +01:00
i8259.c x86, i8259: Only register sysdev if we have a real 8259 PIC 2010-07-20 15:27:33 -07:00
init_task.c Rename .data.cacheline_aligned to .data..cacheline_aligned. 2010-03-03 11:25:58 +01:00
io_delay.c
ioport.c x86-64, paravirt: Call set_iopl_mask() on 64 bits 2009-12-09 16:54:08 -08:00
irq_32.c x86: Unify fixup_irqs() for 32-bit and 64-bit kernels 2009-11-02 15:56:34 +01:00
irq_64.c x86: Unify fixup_irqs() for 32-bit and 64-bit kernels 2009-11-02 15:56:34 +01:00
irq.c genirq: Convert irq_desc.lock to raw_spinlock 2009-12-14 23:55:33 +01:00
irqinit.c x86: Merge simd_math_error() into math_error() 2010-05-03 13:39:29 -07:00
k8.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
kdebugfs.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
kgdb.c kgdb: add missing __percpu markup in arch/x86/kernel/kgdb.c 2010-08-16 15:58:30 -05:00
kprobes.c kprobes/x86: Fix the return address of multiple kretprobes 2010-08-19 12:49:56 +02:00
kvm.c KVM guest: do not batch pte updates from interrupt context 2009-09-10 18:10:50 +03:00
kvmclock.c x86, paravirt: don't compute pvclock adjustments if we trust the tsc 2010-05-19 11:41:05 +03:00
ldt.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
machine_kexec_32.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:27:33 -08:00
machine_kexec_64.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
Makefile x86, earlyprintk: Add earlyprintk for Intel Moorestown platform 2010-10-08 10:01:47 +02:00
mca_32.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
microcode_amd.c Revert "x86: ucode-amd: Load ucode-patches once ..." 2010-01-23 06:21:59 +01:00
microcode_core.c driver core: add devname module aliases to allow module on-demand auto-loading 2010-05-25 15:08:26 -07:00
microcode_intel.c x86: Improve Intel microcode loader performance 2010-03-11 13:49:06 +01:00
mmconf-fam10h_64.c x86: Move range related operation to one file 2010-02-10 17:47:17 -08:00
module.c modules: Fix module_bug_list list corruption race 2010-10-05 11:29:27 -07:00
mpparse.c x86, apic: Map the local apic when parsing the MP table. 2010-08-05 16:26:42 -07:00
mrst.c Merge branch 'x86-mrst-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-06 10:06:28 -07:00
msr.c x86: convert cpu notifier to return encapsulate errno value 2010-05-27 09:12:48 -07:00
olpc_ofw.c x86, olpc: Constify an olpc_ofw() arg 2010-07-30 18:02:21 -07:00
olpc.c x86, olpc: Constify an olpc_ofw() arg 2010-07-30 18:02:21 -07:00
paravirt_patch_32.c
paravirt_patch_64.c
paravirt-spinlocks.c locking: Convert __raw_spin* functions to arch_spin* 2009-12-14 23:55:32 +01:00
paravirt.c x86, paravirt: Remove kmap_atomic_pte paravirt op. 2010-02-27 14:41:35 -08:00
pci-calgary_64.c x86, Calgary: Limit the max PHB number to 256 2010-06-30 22:41:42 -07:00
pci-dma.c x86: Detect whether we should use Xen SWIOTLB. 2010-08-02 15:18:33 -04:00
pci-gart_64.c Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent 2010-04-13 13:24:54 +02:00
pci-nommu.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pci-swiotlb.c x86: remove unnecessary sync_single_range_* in swiotlb_dma_ops 2010-05-27 09:12:52 -07:00
pcspeaker.c
pmtimer_64.c
probe_roms_32.c
process_32.c x86, perf: Add power_end event to process_*.c cpu_idle routine 2010-06-18 11:35:10 +02:00
process_64.c x86, perf: Add power_end event to process_*.c cpu_idle routine 2010-06-18 11:35:10 +02:00
process.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
ptrace.c hw-breakpoints: Tag ptrace breakpoint as exclude_kernel 2010-05-01 04:32:07 +02:00
pvclock.c x86, paravirt: don't compute pvclock adjustments if we trust the tsc 2010-05-19 11:41:05 +03:00
quirks.c x86: Force HPET readback_cmp for all ATI chipsets 2010-07-15 17:10:02 +02:00
reboot_fixups_32.c cs5535: move the DIVIL MSR definition into linux/cs5535.h 2009-12-15 08:53:28 -08:00
reboot.c x86: Fix rebooting on Dell Precision WorkStation T7400 2010-06-20 09:24:13 +02:00
relocate_kernel_32.S
relocate_kernel_64.S
rtc.c Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-18 14:05:47 -07:00
scx200_32.c
setup_percpu.c Fix up trivial spelling errors ('taht' -> 'that') 2010-07-21 09:25:42 -07:00
setup.c x86-32: Separate 1:1 pagetables from swapper_pg_dir 2010-08-18 09:17:20 -07:00
sfi.c x86, irq: Rename gsi_end gsi_top, and fix off by one errors 2010-06-09 13:34:06 -07:00
signal.c x86: Merge sys_sigaltstack 2009-12-09 16:28:59 -08:00
smp.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
smpboot.c x86, hotplug: Serialize CPU hotplug to avoid bringup concurrency issues 2010-08-19 14:47:43 -07:00
stacktrace.c x86: Unify save_stack_address() and save_stack_address_nosched() 2010-06-09 17:32:19 +02:00
step.c x86, ptrace: Fix block-step 2010-03-26 11:33:57 +01:00
sys_i386_32.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
sys_x86_64.c improve sys_newuname() for compat architectures 2010-03-12 15:52:32 -08:00
syscall_64.c
syscall_table_32.S x86: fix up system call numbering nit 2010-08-10 15:35:10 -07:00
tboot.c Merge branch 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2010-05-21 17:16:21 -07:00
tce_64.c
test_nx.c
test_rodata.c
time.c x86: Convert i8259_lock to raw_spinlock 2010-02-16 18:21:32 +01:00
tlb_uv.c x86, UV: Initialize BAU hub map 2010-08-01 09:18:41 +02:00
tls.c
tls.h
topology.c
trampoline_32.S x86: cpuinit-annotate SMP boot trampolines properly 2009-09-20 20:23:37 +02:00
trampoline_64.S x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop 2009-10-12 18:06:48 +02:00
trampoline.c x86, mm: Fix CONFIG_VMSPLIT_1G and 2G_OPT trampoline 2010-08-24 23:05:17 -07:00
traps.c Merge branch 'perf/nmi' into perf/core 2010-08-05 08:45:05 +02:00
tsc_sync.c locking: Convert __raw_spin* functions to arch_spin* 2009-12-14 23:55:32 +01:00
tsc.c x86, tsc: Fix a preemption leak in restore_sched_clock_state() 2010-09-10 18:17:45 -07:00
uv_irq.c Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-18 09:46:35 -07:00
uv_sysfs.c x86: Remove trailing spaces in messages 2010-02-07 17:47:51 +01:00
uv_time.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
verify_cpu_64.S x86: Use symbolic MSR names 2010-07-21 21:23:40 -07:00
visws_quirks.c Merge remote branch 'origin/x86/apic' into x86/mrst 2010-02-22 16:25:18 -08:00
vm86_32.c x86, 32-bit: Convert sys_vm86 & sys_vm86old 2009-12-09 16:29:23 -08:00
vmi_32.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
vmiclock_32.c Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
vmlinux.lds.S Merge branch 'for-35' of git://repo.or.cz/linux-kbuild 2010-06-01 08:55:52 -07:00
vsmp_64.c
vsyscall_64.c timkeeping: Fix update_vsyscall to provide wall_to_monotonic offset 2010-07-27 12:40:54 +02:00
x86_init.c x86: Add i8042 pre-detection hook to x86_platform_ops 2010-07-07 17:05:06 -07:00
x8664_ksyms_64.c x86-64: Don't export init_level4_pgt 2010-04-28 17:25:47 -07:00
xsave.c Merge branch 'x86-xsave-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-06 16:25:13 -07:00