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MX35: add reset cause as provided by other i.MX

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Signed-off-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Stefano Babic 2011-08-05 12:21:37 +02:00 • committed by Albert ARIBAUD
parent e0a83cc1f5
commit d330883f03
1 changed files with 29 additions and 2 deletions
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31
arch/arm/cpu/arm1136/mx35/generic.c
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@ -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