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| author | Greg Ungerer <gerg@snapgear.com> | 2005-09-13 11:14:08 +1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-12 20:04:15 -0700 |
| commit | 9c2aba4852c7e4a33741023109c3713e309d5f8f (patch) | |
| tree | 82f96a2b4e2e7f0ab9f50b0aa52d62f0e3c70e82 | |
| parent | 9f5757476dc1c8eabc51e7d14722a2646bc2cb9d (diff) | |
| download | linux-9c2aba4852c7e4a33741023109c3713e309d5f8f.tar.gz linux-9c2aba4852c7e4a33741023109c3713e309d5f8f.tar.bz2 linux-9c2aba4852c7e4a33741023109c3713e309d5f8f.zip | |
[PATCH] m68knommu: optimized local_irq_disable, and platform reboot code
Switch to a space optimized version of local_irq_disable() for ColdFire
platforms. Also add reboot support for the Freescale M5272 platform.
Patch originally submitted by Philippe De Muyter <phdm@macqel.be>.
Add reboot support for the Freescale M523x ColdFire platform. Patch originally
submitted by Jate Sujjavanich.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/asm-m68knommu/system.h | 54 |
1 files changed, 48 insertions, 6 deletions
diff --git a/include/asm-m68knommu/system.h b/include/asm-m68knommu/system.h index c341b66c147b..53cbbad0f130 100644 --- a/include/asm-m68knommu/system.h +++ b/include/asm-m68knommu/system.h @@ -57,9 +57,18 @@ asmlinkage void resume(void); : "cc", "%d0", "memory") #define local_irq_disable() __asm__ __volatile__ ( \ "move %/sr,%%d0\n\t" \ - "ori.l #0x0700,%%d0\n\t" \ + "ori.l #0x0700,%%d0\n\t" \ "move %%d0,%/sr\n" \ - : /* no inputs */ \ + : /* no outputs */ \ + : \ + : "cc", "%d0", "memory") +/* For spinlocks etc */ +#define local_irq_save(x) __asm__ __volatile__ ( \ + "movew %%sr,%0\n\t" \ + "movew #0x0700,%%d0\n\t" \ + "or.l %0,%%d0\n\t" \ + "movew %%d0,%/sr" \ + : "=d" (x) \ : \ : "cc", "%d0", "memory") #else @@ -75,7 +84,9 @@ asmlinkage void resume(void); #define local_irq_restore(x) asm volatile ("movew %0,%%sr": :"d" (x) : "memory") /* For spinlocks etc */ +#ifndef local_irq_save #define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } while (0) +#endif #define irqs_disabled() \ ({ \ @@ -234,9 +245,9 @@ cmpxchg(volatile int *p, int old, int new) #ifdef CONFIG_COLDFIRE #if defined(CONFIG_M5272) && defined(CONFIG_NETtel) /* - * Need to account for broken early mask of 5272 silicon. So don't - * jump through the original start address. Jump strait into the - * known start of the FLASH code. + * Need to account for broken early mask of 5272 silicon. So don't + * jump through the original start address. Jump strait into the + * known start of the FLASH code. */ #define HARD_RESET_NOW() ({ \ asm(" \ @@ -244,7 +255,9 @@ cmpxchg(volatile int *p, int old, int new) jmp 0xf0000400; \ "); \ }) -#elif defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || defined(CONFIG_DISKtel) || defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA) +#elif defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \ + defined(CONFIG_DISKtel) || defined(CONFIG_SECUREEDGEMP3) || \ + defined(CONFIG_CLEOPATRA) #define HARD_RESET_NOW() ({ \ asm(" \ movew #0x2700, %sr; \ @@ -257,6 +270,26 @@ cmpxchg(volatile int *p, int old, int new) jmp (%a0); \ "); \ }) +#elif defined(CONFIG_M5272) +/* + * Retrieve the boot address in flash using CSBR0 and CSOR0 + * find the reset vector at flash_address + 4 (e.g. 0x400) + * remap it in the flash's current location (e.g. 0xf0000400) + * and jump there. + */ +#define HARD_RESET_NOW() ({ \ + asm(" \ + movew #0x2700, %%sr; \ + move.l %0+0x40,%%d0; \ + and.l %0+0x44,%%d0; \ + andi.l #0xfffff000,%%d0; \ + mov.l %%d0,%%a0; \ + or.l 4(%%a0),%%d0; \ + mov.l %%d0,%%a0; \ + jmp (%%a0);" \ + : /* No output */ \ + : "o" (*(char *)MCF_MBAR) ); \ +}) #elif defined(CONFIG_M528x) /* * The MCF528x has a bit (SOFTRST) in memory (Reset Control Register RCR), @@ -270,6 +303,15 @@ cmpxchg(volatile int *p, int old, int new) while(1) \ *reset |= (0x01 << 7);\ }) +#elif defined(CONFIG_M523x) +#define HARD_RESET_NOW() ({ \ + asm(" \ + movew #0x2700, %sr; \ + movel #0x01000000, %sp; \ + moveal #0x40110000, %a0; \ + moveb #0x80, (%a0); \ + "); \ +}) #else #define HARD_RESET_NOW() ({ \ asm(" \ |