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blackfin: bf60x: add hw watchdog support 

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Sonic Zhang <sonic.adi@gmail.com>
This commit is contained in:
Bob Liu 2011-12-27 15:05:53 +08:00 committed by sonic
parent 4a207e8b9a
commit 49c2da53b7
3 changed files with 16 additions and 0 deletions
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13
arch/blackfin/cpu/initcode.c
View File

@ -461,8 +461,21 @@ program_early_devices(ADI_BOOT_DATA *bs, uint *sdivB, uint *divB, uint *vcoB)
*/
if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS) {
serial_putc('e');
#ifdef __ADSPBF60x__
bfin_write_SEC_GCTL(0x2);
SSYNC();
bfin_write_SEC_FCTL(0xc1);
bfin_write_SEC_SCTL(2, bfin_read_SEC_SCTL(2) | 0x6);
bfin_write_SEC_CCTL(0x2);
SSYNC();
bfin_write_SEC_GCTL(0x1);
bfin_write_SEC_CCTL(0x1);
#endif
bfin_write_WDOG_CNT(MSEC_TO_SCLK(CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE));
#if CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_UART
bfin_write_WDOG_CTL(0);
#endif
serial_putc('f');
}
#endif

2
arch/blackfin/cpu/start.S
View File

@ -65,6 +65,7 @@ ENTRY(_start)
p5.h = HI(COREMMR_BASE);
#ifdef CONFIG_HW_WATCHDOG
#ifndef __ADSPBF60x__
# ifndef CONFIG_HW_WATCHDOG_TIMEOUT_START
# define CONFIG_HW_WATCHDOG_TIMEOUT_START 5000
# endif
@ -77,6 +78,7 @@ ENTRY(_start)
[p4 + (WDOG_CNT - SYSMMR_BASE)] = r0;
/* fire up the watchdog - R0.L above needs to be 0x0000 */
W[p4 + (WDOG_CTL - SYSMMR_BASE)] = r0;
#endif
#endif
/* Turn on the serial for debugging the init process */

1
include/configs/bf609-ezkit.h
View File

@ -63,6 +63,7 @@
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
#define CONFIG_SYS_MALLOC_LEN (512 * 1024)
#define CONFIG_HW_WATCHDOG
/*
* Network Settings
*/