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| author | Jason Jin <Jason.jin@freescale.com> | 2008-05-13 11:50:36 +0800 |
|---|---|---|
| committer | Jon Loeliger <jdl@freescale.com> | 2008-07-07 11:29:48 -0500 |
| commit | 3473ab737282b08ad61841fcbb14c4d264a93a8e (patch) | |
| tree | e67db44d71402d9d6ee3d24742f769c62d87131c | |
| parent | a036b0443657fe0f4773786de9092251869f08ac (diff) | |
| download | u-boot-imx-3473ab737282b08ad61841fcbb14c4d264a93a8e.zip u-boot-imx-3473ab737282b08ad61841fcbb14c4d264a93a8e.tar.gz u-boot-imx-3473ab737282b08ad61841fcbb14c4d264a93a8e.tar.bz2 | |
Feed the watchdog in u-boot for 8610 board.
The watchdog on 8610 board is enabled by setting sw[6]
to on. Once enabled, the watchdog can not be disabled
by software. So feed the dog in u-boot is necessary for
normal operation.
Signed-off-by: Jason Jin <Jason.jin@freescale.com>
| -rw-r--r-- | cpu/mpc86xx/cpu.c | 14 | ||||
| -rw-r--r-- | cpu/mpc86xx/interrupts.c | 1 | ||||
| -rw-r--r-- | include/asm-ppc/immap_86xx.h | 16 | ||||
| -rw-r--r-- | include/configs/MPC8610HPCD.h | 3 |
4 files changed, 32 insertions, 2 deletions
diff --git a/cpu/mpc86xx/cpu.c b/cpu/mpc86xx/cpu.c index e26bf36..4a9905d 100644 --- a/cpu/mpc86xx/cpu.c +++ b/cpu/mpc86xx/cpu.c @@ -214,6 +214,20 @@ get_tbclk(void) void watchdog_reset(void) { +#if defined(CONFIG_MPC8610) + /* + * This actually feed the hard enabled watchdog. + */ + volatile immap_t *immap = (immap_t *)CFG_IMMR; + volatile ccsr_wdt_t *wdt = &immap->im_wdt; + volatile ccsr_gur_t *gur = &immap->im_gur; + u32 tmp = gur->pordevsr; + + if (tmp & 0x4000) { + wdt->swsrr = 0x556c; + wdt->swsrr = 0xaa39; + } +#endif } #endif /* CONFIG_WATCHDOG */ diff --git a/cpu/mpc86xx/interrupts.c b/cpu/mpc86xx/interrupts.c index d9f634f..f16744b 100644 --- a/cpu/mpc86xx/interrupts.c +++ b/cpu/mpc86xx/interrupts.c @@ -36,6 +36,7 @@ #include <command.h> #include <asm/processor.h> #include <ppc_asm.tmpl> +#include <watchdog.h> unsigned long decrementer_count; /* count value for 1e6/HZ microseconds */ unsigned long timestamp; diff --git a/include/asm-ppc/immap_86xx.h b/include/asm-ppc/immap_86xx.h index c03b4b8..03a25c7 100644 --- a/include/asm-ppc/immap_86xx.h +++ b/include/asm-ppc/immap_86xx.h @@ -1304,9 +1304,21 @@ typedef struct ccsr_gur { uint lynxdcr1; /* 0xe0f08 - Lynx debug control register 1*/ int res14[6]; uint ddrioovcr; /* 0xe0f24 - DDR IO Overdrive Control register */ - char res15[61656]; + char res15[216]; } ccsr_gur_t; +/* + * Watchdog register block(0xe_4000-0xe_4fff) + */ +typedef struct ccsr_wdt { + uint res0; + uint swcrr; /* System watchdog control register */ + uint swcnr; /* System watchdog count register */ + char res1[2]; + ushort swsrr; /* System watchdog service register */ + char res2[4080]; +} ccsr_wdt_t; + typedef struct immap { ccsr_local_mcm_t im_local_mcm; ccsr_ddr_t im_ddr1; @@ -1330,6 +1342,8 @@ typedef struct immap { char res5[389120]; ccsr_rio_t im_rio; ccsr_gur_t im_gur; + char res6[12288]; + ccsr_wdt_t im_wdt; } immap_t; extern immap_t *immr; diff --git a/include/configs/MPC8610HPCD.h b/include/configs/MPC8610HPCD.h index fc16890..98ae34c 100644 --- a/include/configs/MPC8610HPCD.h +++ b/include/configs/MPC8610HPCD.h @@ -485,7 +485,8 @@ #endif -#undef CONFIG_WATCHDOG /* watchdog disabled */ +#define CONFIG_WATCHDOG /* watchdog enabled */ +#define CFG_WATCHDOG_FREQ 5000 /* Feed interval, 5s */ /*DIU Configuration*/ #define DIU_CONNECT_TO_DVI /* DIU controller connects to DVI encoder*/ |