diff options
author | Dave Liu <daveliu@freescale.com> | 2007-06-25 10:41:56 +0800 |
---|---|---|
committer | Kim Phillips <kim.phillips@freescale.com> | 2007-08-10 01:12:03 -0500 |
commit | 9be39a67c9f8fef7107f5df09d673005f04d0963 (patch) | |
tree | 79b4dd35873605ea93f34b8113d527988919f270 /cpu/mpc83xx/cpu_init.c | |
parent | ff9658d7049bf8c8e8e0a05dbe5e9f7e91aa5a5d (diff) |
mpc83xx: Add support for the display of reset status
83xx processor family has many reset sources, such as
power on reset, software hard reset, software soft reset,
JTAG, bus monitor, software watchdog, check stop reset,
external hard reset, external software reset.
sometimes, to figure out the fault of system, we need to
know the cause of reset early before the prompt of
u-boot present.
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Diffstat (limited to 'cpu/mpc83xx/cpu_init.c')
-rw-r--r-- | cpu/mpc83xx/cpu_init.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/cpu/mpc83xx/cpu_init.c b/cpu/mpc83xx/cpu_init.c index 53a5f594739..722497966a1 100644 --- a/cpu/mpc83xx/cpu_init.c +++ b/cpu/mpc83xx/cpu_init.c @@ -257,3 +257,39 @@ int cpu_init_r (void) #endif return 0; } + +/* + * Figure out the cause of the reset + */ +int prt_83xx_rsr(void) +{ + static struct { + ulong mask; + char *desc; + } bits[] = { + { + RSR_SWSR, "Software Soft"}, { + RSR_SWHR, "Software Hard"}, { + RSR_JSRS, "JTAG Soft"}, { + RSR_CSHR, "Check Stop"}, { + RSR_SWRS, "Software Watchdog"}, { + RSR_BMRS, "Bus Monitor"}, { + RSR_SRS, "External/Internal Soft"}, { + RSR_HRS, "External/Internal Hard"} + }; + static int n = sizeof bits / sizeof bits[0]; + ulong rsr = gd->reset_status; + int i; + char *sep; + + puts("Reset Status:"); + + sep = " "; + for (i = 0; i < n; i++) + if (rsr & bits[i].mask) { + printf("%s%s", sep, bits[i].desc); + sep = ", "; + } + puts("\n\n"); + return 0; +} |