From 7517a793f0d972da1f89fb0fd7855c305e9a9804 Mon Sep 17 00:00:00 2001 From: Jason Liu Date: Wed, 20 Apr 2011 00:47:04 +0000 Subject: [PATCH] MX5: factor out boot cause funciton to common code factor out boot cause function to common code to avoid the duplicate code in each board support package Signed-off-by: Jason Liu --- arch/arm/cpu/armv7/mx5/soc.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/arch/arm/cpu/armv7/mx5/soc.c b/arch/arm/cpu/armv7/mx5/soc.c index 09500b3b9f..6f4e8db74d 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 -- 2.25.1