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| author | Mike Frysinger <michael.frysinger@analog.com> | 2007-05-21 18:09:32 +0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-21 09:50:23 -0700 |
| commit | a9c59c2746c7e773839d51027c0e16ccf41f8fef (patch) | |
| tree | e5eef75538858cc0d6f70036c549b2e3cc4858fc | |
| parent | 19381f024b01413d83cec1655c3fc4c9c09ae274 (diff) | |
| download | linux-a9c59c2746c7e773839d51027c0e16ccf41f8fef.tar.bz2 | |
Blackfin arch: cache SWRST value at bootup so other things like watchdog can non-destructively query it
Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/blackfin/kernel/setup.c | 8 | ||||
| -rw-r--r-- | include/asm-blackfin/bfin-global.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index b6ac6f8067b8..02dc74301920 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -43,6 +43,8 @@ #include <asm/blackfin.h> #include <asm/cplbinit.h> +u16 _bfin_swrst; + unsigned long memory_start, memory_end, physical_mem_end; unsigned long reserved_mem_dcache_on; unsigned long reserved_mem_icache_on; @@ -381,6 +383,12 @@ void __init setup_arch(char **cmdline_p) if (l1_length > L1_DATA_A_LENGTH) panic("L1 memory overflow\n"); +#ifdef BF561_FAMILY + _bfin_swrst = bfin_read_SICA_SWRST(); +#else + _bfin_swrst = bfin_read_SWRST(); +#endif + bf53x_cache_init(); printk(KERN_INFO "Hardware Trace Enabled\n"); diff --git a/include/asm-blackfin/bfin-global.h b/include/asm-blackfin/bfin-global.h index e37f81609fc3..57f37ccdcdf1 100644 --- a/include/asm-blackfin/bfin-global.h +++ b/include/asm-blackfin/bfin-global.h @@ -104,6 +104,7 @@ extern unsigned long dpdt_swapcount_table[]; extern unsigned long table_start, table_end; +extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */ extern struct file_operations dpmc_fops; extern char _start; extern unsigned long _ramstart, _ramend, _rambase; |