diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 10:08:43 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 10:08:43 -0700 |
commit | 54cebc68c81eacac41a21bdfe99dc889d3882c60 (patch) | |
tree | da1d3872c6ddf208768e784bd1ea09054a81462d /arch/blackfin/kernel/reboot.c | |
parent | fffdedef691a0f6fa7ca1fc0a2a508cbb49def69 (diff) | |
parent | 71de1f8a6365ea65346881e526132563d93696d1 (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (60 commits)
Blackfin arch: make sure we include the fix for SPORT hysteresis when reprogramming clocks
Blackfin arch: Fix bogus str_ident check in gpio code
Blackfin arch: AD7879 Touchscreen driver
Blackfin arch: introducing bfin_addr_dcachable
Blackfin arch: fix a typo in comments
Blackfin arch: Remove useless head file
Blackfin arch: make sure L2 start and length are always defined (fixes building on BF542)
Blackfin arch: use the Blackfin on-chip ROM to do software reset when possible
Blackfin arch: update anomaly headers to match the latest sheet
Blackfin arch: bfin_reset() is an internal reboot function ... everyone should go through machine_restart()
Blackfin arch: print out error/warning if you are running on the incorrect CPU type
Blackfin arch: remove non-bf54x ifdef logic since this file is only compiled on bf54x parts
Blackfin arch: update board defconfigs
Blackfin arch: Add optional verbose debug
Blackfin arch: emulate a TTY over the EMUDAT/JTAG interface
Blackfin arch: have is_user_addr_valid() check for overflows (like when address is -1)
Blackfin arch: ptrace - fix off-by-one check on end of memory regions
Blackfin arch: Enable framebuffer support for the BF526-EZkit TFT LCD display
Blackfin arch: flash memory map and dm9000 resources updating
Blackfin arch: early prink code still use uart core console functions to parse and set configure option string
...
Diffstat (limited to 'arch/blackfin/kernel/reboot.c')
-rw-r--r-- | arch/blackfin/kernel/reboot.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/blackfin/kernel/reboot.c b/arch/blackfin/kernel/reboot.c index 367e2dc0988..ae97ca407b0 100644 --- a/arch/blackfin/kernel/reboot.c +++ b/arch/blackfin/kernel/reboot.c @@ -10,6 +10,7 @@ #include <asm/bfin-global.h> #include <asm/reboot.h> #include <asm/system.h> +#include <asm/bfrom.h> /* A system soft reset makes external memory unusable so force * this function into L1. We use the compiler ssync here rather @@ -20,7 +21,7 @@ * the core reset. */ __attribute__((l1_text)) -void bfin_reset(void) +static void bfin_reset(void) { /* Wait for completion of "system" events such as cache line * line fills so that we avoid infinite stalls later on as @@ -34,15 +35,15 @@ void bfin_reset(void) bfin_write_SWRST(0x7); /* Due to the way reset is handled in the hardware, we need - * to delay for 7 SCLKS. The only reliable way to do this is - * to calculate the CCLK/SCLK ratio and multiply 7. For now, + * to delay for 10 SCLKS. The only reliable way to do this is + * to calculate the CCLK/SCLK ratio and multiply 10. For now, * we'll assume worse case which is a 1:15 ratio. */ asm( "LSETUP (1f, 1f) LC0 = %0\n" "1: nop;" : - : "a" (15 * 7) + : "a" (15 * 10) : "LC0", "LB0", "LT0" ); @@ -74,7 +75,14 @@ void machine_restart(char *cmd) { native_machine_restart(cmd); local_irq_disable(); - bfin_reset(); + if (ANOMALY_05000353 || ANOMALY_05000386) + bfin_reset(); + else + /* the bootrom checks to see how it was reset and will + * automatically perform a software reset for us when + * it starts executing boot + */ + asm("raise 1;"); } __attribute__((weak)) |