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authorBoschung, Rainer <Rainer.Boschung@keymile.com>2014-06-03 09:05:18 +0200
committerYork Sun <yorksun@freescale.com>2014-08-01 14:18:46 -0700
commita09f470d49c4a6355f16fee6455d964211021e3d (patch)
treef1dce6d06e7a38473406800160b71d9f86f78a2f /board
parent807d93d6de5f54cfdcc98bb6c392b2b1f4237dc8 (diff)
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kmp204x: set CPU watchdog reset reason flag
Check the core timer status register (TSR) for watchdog reset, and and set the QRIO's reset reason flag REASON1[0] accordingly. This allows the appliction SW to identify the cpu watchdog as a reset reason, by setting the REASON1[0] flag in the QRIO. Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com> Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com> Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'board')
-rw-r--r--board/keymile/kmp204x/kmp204x.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/board/keymile/kmp204x/kmp204x.c b/board/keymile/kmp204x/kmp204x.c
index 6bc8eb8..225262e 100644
--- a/board/keymile/kmp204x/kmp204x.c
+++ b/board/keymile/kmp204x/kmp204x.c
@@ -80,14 +80,26 @@ int get_scl(void)
#define ZL30158_RST 8
#define BFTIC4_RST 0
+#define RSTRQSR1_WDT_RR 0x00200000
+#define RSTRQSR1_SW_RR 0x00100000
int board_early_init_f(void)
{
ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+ bool cpuwd_flag = false;
/* board only uses the DDR_MCK0, so disable the DDR_MCK1/2/3 */
setbits_be32(&gur->ddrclkdr, 0x001f000f);
+ /* set reset reason according CPU register */
+ if ((gur->rstrqsr1 & (RSTRQSR1_WDT_RR | RSTRQSR1_SW_RR)) ==
+ RSTRQSR1_WDT_RR)
+ cpuwd_flag = true;
+
+ qrio_cpuwd_flag(cpuwd_flag);
+ /* clear CPU bits by writing 1 */
+ setbits_be32(&gur->rstrqsr1, RSTRQSR1_WDT_RR | RSTRQSR1_SW_RR);
+
/* set the BFTIC's prstcfg to reset at power-up and unit reset only */
qrio_prstcfg(BFTIC4_RST, PRSTCFG_POWUP_UNIT_RST);
/* and enable WD on it */