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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>
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2 changed files with 9 additions and 0 deletions
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@ -43,6 +43,8 @@
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#include <asm/blackfin.h>
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#include <asm/blackfin.h>
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#include <asm/cplbinit.h>
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#include <asm/cplbinit.h>
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u16 _bfin_swrst;
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unsigned long memory_start, memory_end, physical_mem_end;
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unsigned long memory_start, memory_end, physical_mem_end;
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unsigned long reserved_mem_dcache_on;
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unsigned long reserved_mem_dcache_on;
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unsigned long reserved_mem_icache_on;
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unsigned long reserved_mem_icache_on;
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@ -381,6 +383,12 @@ void __init setup_arch(char **cmdline_p)
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if (l1_length > L1_DATA_A_LENGTH)
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if (l1_length > L1_DATA_A_LENGTH)
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panic("L1 memory overflow\n");
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panic("L1 memory overflow\n");
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#ifdef BF561_FAMILY
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_bfin_swrst = bfin_read_SICA_SWRST();
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#else
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_bfin_swrst = bfin_read_SWRST();
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#endif
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bf53x_cache_init();
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bf53x_cache_init();
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printk(KERN_INFO "Hardware Trace Enabled\n");
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printk(KERN_INFO "Hardware Trace Enabled\n");
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@ -104,6 +104,7 @@ extern unsigned long dpdt_swapcount_table[];
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extern unsigned long table_start, table_end;
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extern unsigned long table_start, table_end;
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extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */
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extern struct file_operations dpmc_fops;
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extern struct file_operations dpmc_fops;
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extern char _start;
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extern char _start;
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extern unsigned long _ramstart, _ramend, _rambase;
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extern unsigned long _ramstart, _ramend, _rambase;
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