openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

Blackfin arch: If we double fault, rather than hang forever, reset 

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Robin Getz 2008-07-26 19:41:40 +08:00 committed by Bryan Wu
parent 9de3a0b697
commit 2d2009806d
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/blackfin/kernel/setup.c
View File

@ -771,6 +771,9 @@ void __init setup_arch(char **cmdline_p)
_bfin_swrst = bfin_read_SWRST();
/* If we double fault, reset the system - otherwise we hang forever */
bfin_write_SWRST(DOUBLE_FAULT);
if (_bfin_swrst & RESET_DOUBLE)
printk(KERN_INFO "Recovering from Double Fault event\n");
else if (_bfin_swrst & RESET_WDOG)
@ -1017,10 +1020,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
}
/* Is it turned on? */
if (bfin_read_DMEM_CONTROL() & (ENDCPLB | DMC_ENABLE) != (ENDCPLB | DMC_ENABLE))
if ((bfin_read_DMEM_CONTROL() & (ENDCPLB | DMC_ENABLE)) != (ENDCPLB | DMC_ENABLE))
dcache_size = 0;
if (bfin_read_IMEM_CONTROL() & (IMC | ENICPLB) == (IMC | ENICPLB))
if ((bfin_read_IMEM_CONTROL() & (IMC | ENICPLB)) == (IMC | ENICPLB))
icache_size = 0;
seq_printf(m, "cache size\t: %d KB(L1 icache) "