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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-05 13:25:15 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-05 13:25:27 +0000 |
| commit | 7b9dd47136c07ffd883aff6926c7b281e4c1eea4 (patch) | |
| tree | b835312e76fe323de3e1cbbb0d15fca5a3f7ef9c /arch/arm/mach-footbridge/common.c | |
| parent | 2e0e943436912ffe0848ece58167edfe754edb96 (diff) | |
| parent | 0575fb754dbfc32a01f297e778533340a533ec68 (diff) | |
| download | linux-7b9dd47136c07ffd883aff6926c7b281e4c1eea4.tar.gz linux-7b9dd47136c07ffd883aff6926c7b281e4c1eea4.tar.bz2 linux-7b9dd47136c07ffd883aff6926c7b281e4c1eea4.zip | |
Merge branch 'restart' into for-linus
Conflicts:
arch/arm/mach-exynos/cpu.c
The changes to arch/arm/mach-exynos/cpu.c were moved to
mach-exynos/common.c.
Diffstat (limited to 'arch/arm/mach-footbridge/common.c')
| -rw-r--r-- | arch/arm/mach-footbridge/common.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c index 38a44f9b9da2..41978ee4f9d0 100644 --- a/arch/arm/mach-footbridge/common.c +++ b/arch/arm/mach-footbridge/common.c @@ -199,6 +199,33 @@ void __init footbridge_map_io(void) iotable_init(ebsa285_host_io_desc, ARRAY_SIZE(ebsa285_host_io_desc)); } +void footbridge_restart(char mode, const char *cmd) +{ + if (mode == 's') { + /* Jump into the ROM */ + soft_restart(0x41000000); + } else { + /* + * Force the watchdog to do a CPU reset. + * + * After making sure that the watchdog is disabled + * (so we can change the timer registers) we first + * enable the timer to autoreload itself. Next, the + * timer interval is set really short and any + * current interrupt request is cleared (so we can + * see an edge transition). Finally, TIMER4 is + * enabled as the watchdog. + */ + *CSR_SA110_CNTL &= ~(1 << 13); + *CSR_TIMER4_CNTL = TIMER_CNTL_ENABLE | + TIMER_CNTL_AUTORELOAD | + TIMER_CNTL_DIV16; + *CSR_TIMER4_LOAD = 0x2; + *CSR_TIMER4_CLR = 0; + *CSR_SA110_CNTL |= (1 << 13); + } +} + #ifdef CONFIG_FOOTBRIDGE_ADDIN static inline unsigned long fb_bus_sdram_offset(void) |