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author | Mike Frysinger <vapier.adi@gmail.com> | 2009-02-04 16:49:45 +0800 |
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committer | Bryan Wu <cooloney@kernel.org> | 2009-02-04 16:49:45 +0800 |
commit | adab7eb883a0b0fb7f13b1d7b30b596139f6f40d (patch) | |
tree | 13891052c36d173d71964d2cf93d2ca52aac6643 /arch/blackfin/kernel/reboot.c | |
parent | aa9c33b496ca9434f26beaa1b447a6e2e5d8ad6a (diff) | |
download | op-kernel-dev-adab7eb883a0b0fb7f13b1d7b30b596139f6f40d.zip op-kernel-dev-adab7eb883a0b0fb7f13b1d7b30b596139f6f40d.tar.gz |
Blackfin arch: sync reboot handler with version in u-boot
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/kernel/reboot.c')
-rw-r--r-- | arch/blackfin/kernel/reboot.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/arch/blackfin/kernel/reboot.c b/arch/blackfin/kernel/reboot.c index eeee8cb..f7ca578 100644 --- a/arch/blackfin/kernel/reboot.c +++ b/arch/blackfin/kernel/reboot.c @@ -20,7 +20,7 @@ * reset while the Core B bit (on dual core parts) is cleared by * the core reset. */ -__attribute__((l1_text)) +__attribute__ ((__l1_text__, __noreturn__)) static void _bfin_reset(void) { /* Wait for completion of "system" events such as cache line @@ -30,7 +30,11 @@ static void _bfin_reset(void) */ __builtin_bfin_ssync(); - while (1) { + /* The bootrom checks to see how it was reset and will + * automatically perform a software reset for us when + * it starts executing after the core reset. + */ + if (ANOMALY_05000353 || ANOMALY_05000386) { /* Initiate System software reset. */ bfin_write_SWRST(0x7); @@ -50,6 +54,11 @@ static void _bfin_reset(void) /* Clear System software reset */ bfin_write_SWRST(0); + /* The BF526 ROM will crash during reset */ +#if defined(__ADSPBF522__) || defined(__ADSPBF524__) || defined(__ADSPBF526__) + bfin_read_SWRST(); +#endif + /* Wait for the SWRST write to complete. Cannot rely on SSYNC * though as the System state is all reset now. */ @@ -60,22 +69,17 @@ static void _bfin_reset(void) : "a" (15 * 1) : "LC1", "LB1", "LT1" ); + } + while (1) /* Issue core reset */ asm("raise 1"); - } } +__attribute__ ((__noreturn__)) static void bfin_reset(void) { - 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;"); + _bfin_reset(); } __attribute__((weak)) |