From d330883f03270a6ff9560e270f8f7c3656bfb7e2 Mon Sep 17 00:00:00 2001 From: Stefano Babic Date: Fri, 5 Aug 2011 12:21:37 +0200 Subject: [PATCH] MX35: add reset cause as provided by other i.MX Signed-off-by: Stefano Babic --- arch/arm/cpu/arm1136/mx35/generic.c | 31 +++++++++++++++++++++++++++-- 1 file changed, 29 insertions(+), 2 deletions(-) diff --git a/arch/arm/cpu/arm1136/mx35/generic.c b/arch/arm/cpu/arm1136/mx35/generic.c index 1b9809b2f8..ac4838f034 100644 --- a/arch/arm/cpu/arm1136/mx35/generic.c +++ b/arch/arm/cpu/arm1136/mx35/generic.c @@ -422,12 +422,39 @@ U_BOOT_CMD( "" ); +static char *get_reset_cause(void) +{ + /* read RCSR register from CCM module */ + struct ccm_regs *ccm = + (struct ccm_regs *)IMX_CCM_BASE; + + u32 cause = readl(&ccm->rcsr) & 0x0F; + + switch (cause) { + case 0x0000: + return "POR"; + case 0x0002: + return "JTAG"; + case 0x0004: + return "RST"; + case 0x0008: + return "WDOG"; + default: + return "unknown reset"; + } +} + #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo(void) { - printf("CPU: Freescale i.MX35 at %d MHz\n", + u32 srev = get_cpu_rev(); + + printf("CPU: Freescale i.MX35 rev %d.%d at %d MHz.\n", + (srev & 0xF0) >> 4, (srev & 0x0F), get_mcu_main_clk() / 1000000); - /* mxc_dump_clocks(); */ + + printf("Reset cause: %s\n", get_reset_cause()); + return 0; } #endif -- 2.30.2