diff options
| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-13 09:49:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-13 09:49:04 -0700 |
| commit | dcf397f037f52add9945eced57ca300ab6a4413c (patch) | |
| tree | e78767d164589e9097a54bf564b072fb01f80820 /arch/sh/kernel/head.S | |
| parent | 6faf035cf9fdd8283c2b2b2c34b76b5445ec6fc4 (diff) | |
| parent | 68ee0f9c98a42e36f9eab29155b2bb0e7e409ac6 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (124 commits)
sh: allow building for both r2d boards in same binary.
sh: fix r2d board detection
sh: Discard .exit.text/.exit.data at runtime.
sh: Fix up some section alignments in linker script.
sh: Fix SH-4 DMAC CHCR masking.
sh: Rip out left-over nommu cond syscall cruft.
sh: Make kgdb i-cache flushing less inept.
sh: kgdb section mismatches and tidying.
sh: cleanup struct irqaction initializers.
sh: early_printk tidying.
video: pvr2fb: Add TV (RGB) support to Dreamcast PVR driver.
sh: Conditionalize gUSA support.
sh: Follow gUSA preempt changes in __switch_to().
sh: Tidy up gUSA preempt handling.
sh: __copy_user() optimizations for small copies.
sh: clkfwk: Support multi-level clock propagation.
sh: Fix URAM start address on SH7785.
sh: Use boot_cpu_data for CPU probe.
sh: Support extended mode TLB on SH-X3.
sh: Bump MAX_ACTIVE_REGIONS for SH7785.
...
Diffstat (limited to 'arch/sh/kernel/head.S')
| -rw-r--r-- | arch/sh/kernel/head.S | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/sh/kernel/head.S b/arch/sh/kernel/head.S index 0bccc0ca5a0..3338239717f 100644 --- a/arch/sh/kernel/head.S +++ b/arch/sh/kernel/head.S @@ -54,8 +54,8 @@ ENTRY(_stext) mov.l 1f, r0 ! MD=1, RB=0, BL=0, IMASK=0xF ldc r0, sr ! Initialize global interrupt mask - mov #0, r0 #ifdef CONFIG_CPU_HAS_SR_RB + mov #0, r0 ldc r0, r6_bank #endif @@ -72,15 +72,18 @@ ENTRY(_stext) ! mov.l 2f, r0 mov r0, r15 ! Set initial r15 (stack pointer) - mov #(THREAD_SIZE >> 10), r1 - shll8 r1 ! r1 = THREAD_SIZE - shll2 r1 - sub r1, r0 ! #ifdef CONFIG_CPU_HAS_SR_RB + mov.l 7f, r0 ldc r0, r7_bank ! ... and initial thread_info #endif ! Clear BSS area +#ifdef CONFIG_SMP + mov.l 3f, r0 + cmp/eq #0, r0 ! skip clear if set to zero + bt 10f +#endif + mov.l 3f, r1 add #4, r1 mov.l 4f, r2 @@ -89,13 +92,14 @@ ENTRY(_stext) bf/s 9b ! while (r1 < r2) mov.l r0,@-r2 +10: ! Additional CPU initialization mov.l 6f, r0 jsr @r0 nop SYNCO() ! Wait for pending instructions.. - + ! Start kernel mov.l 5f, r0 jmp @r0 @@ -107,8 +111,10 @@ ENTRY(_stext) #else 1: .long 0x400080F0 ! MD=1, RB=0, BL=0, FD=1, IMASK=0xF #endif +ENTRY(stack_start) 2: .long init_thread_union+THREAD_SIZE 3: .long __bss_start 4: .long _end 5: .long start_kernel 6: .long sh_cpu_init +7: .long init_thread_union |