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| author | Boschung, Rainer <Rainer.Boschung@keymile.com> | 2014-06-03 09:05:18 +0200 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-08-01 14:18:46 -0700 |
| commit | a09f470d49c4a6355f16fee6455d964211021e3d (patch) | |
| tree | f1dce6d06e7a38473406800160b71d9f86f78a2f /board | |
| parent | 807d93d6de5f54cfdcc98bb6c392b2b1f4237dc8 (diff) | |
| download | u-boot-imx-a09f470d49c4a6355f16fee6455d964211021e3d.zip u-boot-imx-a09f470d49c4a6355f16fee6455d964211021e3d.tar.gz u-boot-imx-a09f470d49c4a6355f16fee6455d964211021e3d.tar.bz2 | |
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.c | 12 |
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 */ |