diff options
Diffstat (limited to 'arch/arm/cpu/armv7')
| -rw-r--r-- | arch/arm/cpu/armv7/mx5/soc.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx5/soc.c b/arch/arm/cpu/armv7/mx5/soc.c index 09500b3..6f4e8db 100644 --- a/arch/arm/cpu/armv7/mx5/soc.c +++ b/arch/arm/cpu/armv7/mx5/soc.c @@ -77,6 +77,33 @@ u32 get_cpu_rev(void) return system_rev; } +static char *get_reset_cause(void) +{ + u32 cause; + struct src *src_regs = (struct src *)SRC_BASE_ADDR; + + cause = readl(&src_regs->srsr); + writel(cause, &src_regs->srsr); + + switch (cause) { + case 0x00001: + return "POR"; + case 0x00004: + return "CSU"; + case 0x00008: + return "IPP USER"; + case 0x00010: + return "WDOG"; + case 0x00020: + return "JTAG HIGH-Z"; + case 0x00040: + return "JTAG SW"; + case 0x10000: + return "WARM BOOT"; + default: + return "unknown reset"; + } +} #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo(void) @@ -89,6 +116,7 @@ int print_cpuinfo(void) (cpurev & 0x000F0) >> 4, (cpurev & 0x0000F) >> 0, mxc_get_clock(MXC_ARM_CLK) / 1000000); + printf("Reset cause: %s\n", get_reset_cause()); return 0; } #endif |