Signed-off-by: Stefano Babic <[email protected]>
---
arch/arm/cpu/arm1136/mx35/generic.c | 31 +++++++++++++++++++++++++++++--
1 files changed, 29 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/arm1136/mx35/generic.c
b/arch/arm/cpu/arm1136/mx35/generic.c
index fcfaba5..951bccb 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
--
1.7.1
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