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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-13 09:49:04 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-13 09:49:04 -0700
commitdcf397f037f52add9945eced57ca300ab6a4413c (patch)
treee78767d164589e9097a54bf564b072fb01f80820 /arch/sh/kernel/cpu/init.c
parent6faf035cf9fdd8283c2b2b2c34b76b5445ec6fc4 (diff)
parent68ee0f9c98a42e36f9eab29155b2bb0e7e409ac6 (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/cpu/init.c')
-rw-r--r--arch/sh/kernel/cpu/init.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c
index 9172e97dc26a..c217c4bf0085 100644
--- a/arch/sh/kernel/cpu/init.c
+++ b/arch/sh/kernel/cpu/init.c
@@ -22,6 +22,7 @@
#include <asm/cache.h>
#include <asm/io.h>
#include <asm/ubc.h>
+#include <asm/smp.h>
/*
* Generic wrapper for command line arguments to disable on-chip
@@ -143,12 +144,15 @@ static void __init cache_init(void)
flags &= ~CCR_CACHE_EMODE;
#endif
-#ifdef CONFIG_SH_WRITETHROUGH
- /* Turn on Write-through caching */
+#if defined(CONFIG_CACHE_WRITETHROUGH)
+ /* Write-through */
flags |= CCR_CACHE_WT;
-#else
- /* .. or default to Write-back */
+#elif defined(CONFIG_CACHE_WRITEBACK)
+ /* Write-back */
flags |= CCR_CACHE_CB;
+#else
+ /* Off */
+ flags &= ~CCR_CACHE_ENABLE;
#endif
ctrl_outl(flags, CCR);
@@ -213,8 +217,11 @@ static void __init dsp_init(void)
* Each processor family is still responsible for doing its own probing
* and cache configuration in detect_cpu_and_cache_system().
*/
-asmlinkage void __init sh_cpu_init(void)
+
+asmlinkage void __cpuinit sh_cpu_init(void)
{
+ current_thread_info()->cpu = hard_smp_processor_id();
+
/* First, probe the CPU */
detect_cpu_and_cache_system();
@@ -224,9 +231,10 @@ asmlinkage void __init sh_cpu_init(void)
/* Init the cache */
cache_init();
- shm_align_mask = max_t(unsigned long,
- current_cpu_data.dcache.way_size - 1,
- PAGE_SIZE - 1);
+ if (raw_smp_processor_id() == 0)
+ shm_align_mask = max_t(unsigned long,
+ current_cpu_data.dcache.way_size - 1,
+ PAGE_SIZE - 1);
/* Disable the FPU */
if (fpu_disabled) {
@@ -265,6 +273,7 @@ asmlinkage void __init sh_cpu_init(void)
* like PTRACE_SINGLESTEP or doing hardware watchpoints in GDB. So ..
* we wake it up and hope that all is well.
*/
- ubc_wakeup();
+ if (raw_smp_processor_id() == 0)
+ ubc_wakeup();
speculative_execution_init();
}