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Commit a9c59c27 authored by Mike Frysinger's avatar Mike Frysinger Committed by Linus Torvalds
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Blackfin arch: cache SWRST value at bootup so other things like watchdog can... 


Blackfin arch: cache SWRST value at bootup so other things like watchdog can non-destructively query it

Signed-off-by: default avatarMike Frysinger <michael.frysinger@analog.com>
Signed-off-by: default avatarBryan Wu <bryan.wu@analog.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 19381f02

arch/blackfin/kernel/setup.c

+8 −0
Original line number Diff line number Diff line
@@ -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");

include/asm-blackfin/bfin-global.h

+1 −0
Original line number Diff line number Diff line
@@ -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;