diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2006-06-23 18:20:09 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-06-28 11:59:47 +1000 |
| commit | 4ba99b97dadd35b9ce1438b2bc7c992a4a14a8b1 (patch) | |
| tree | 09065f39b2b22e0d29463cb8cea55ccb4b293549 | |
| parent | aa98c50dcb5d5b85d2a4c26d54fa1e3c31c11e4b (diff) | |
[POWERPC] Setup the boot cpu's paca pointer in C rather than asm
There's no need to set the boot cpu paca in asm, so do it in C so us
mere mortals can understand it.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 11 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 9 |
2 files changed, 8 insertions, 12 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index be5560a2e44..da092429349 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -1976,17 +1976,6 @@ _STATIC(start_here_common) /* Not reached */ BUG_OPCODE -/* Put the paca pointer into r13 and SPRG3 */ -_GLOBAL(setup_boot_paca) - LOAD_REG_IMMEDIATE(r3, boot_cpuid) - lwz r3,0(r3) - LOAD_REG_IMMEDIATE(r4, paca) /* Get base vaddr of paca array */ - mulli r3,r3,PACA_SIZE /* Calculate vaddr of right paca */ - add r13,r3,r4 /* for this processor. */ - mtspr SPRN_SPRG3,r13 - - blr - /* * We put a few things here that have to be page-aligned. * This stuff goes at the beginning of the bss, which is page-aligned. diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index cc26530145d..a2fb2e627aa 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -149,6 +149,13 @@ early_param("smt-enabled", early_smt_enabled); #define check_smt_enabled() #endif /* CONFIG_SMP */ +/* Put the paca pointer into r13 and SPRG3 */ +void __init setup_paca(int cpu) +{ + local_paca = &paca[cpu]; + mtspr(SPRN_SPRG3, local_paca); +} + /* * Early initialization entry point. This is called by head.S * with MMU translation disabled. We rely on the "feature" of @@ -183,7 +190,7 @@ void __init early_setup(unsigned long dt_ptr) early_init_devtree(__va(dt_ptr)); /* Now we know the logical id of our boot cpu, setup the paca. */ - setup_boot_paca(); + setup_paca(boot_cpuid); /* Fix up paca fields required for the boot cpu */ get_paca()->cpu_start = 1; |