From: Sonic Zhang sonic.zhang@analog.com
- Enable hw_watchdog_init() in watchdog.h if CONFIG_HW_WATCHDOG is defined. - Move blackfin hw watchdog driver to the generic driver folder. - Call hw_watchdog_init() from blackfin board init code. - Reuse macro CONFIG_WATCHDOG_TIMEOUT_MSECS - Update README.watchdog accordingly
Signed-off-by: Sonic Zhang sonic.zhang@analog.com --- arch/blackfin/cpu/Makefile | 1 - arch/blackfin/cpu/start.S | 13 ++++++------- arch/blackfin/lib/board.c | 4 ++-- doc/README.watchdog | 3 +++ drivers/watchdog/Makefile | 1 + .../cpu/watchdog.c => drivers/watchdog/bfin_wdt.c | 2 +- include/configs/bfin_adi_common.h | 6 ++++++ include/watchdog.h | 3 +-- 8 files changed, 20 insertions(+), 13 deletions(-) rename arch/blackfin/cpu/watchdog.c => drivers/watchdog/bfin_wdt.c (83%)
diff --git a/arch/blackfin/cpu/Makefile b/arch/blackfin/cpu/Makefile index 0a72ec5..145f63e 100644 --- a/arch/blackfin/cpu/Makefile +++ b/arch/blackfin/cpu/Makefile @@ -25,7 +25,6 @@ COBJS-y += os_log.o COBJS-y += reset.o COBJS-y += serial.o COBJS-y += traps.o -COBJS-$(CONFIG_HW_WATCHDOG) += watchdog.o
SRCS := $(SEXTRA:.o=.S) $(SOBJS:.o=.S) $(COBJS-y:.o=.c) OBJS := $(addprefix $(obj),$(COBJS-y) $(SOBJS)) diff --git a/arch/blackfin/cpu/start.S b/arch/blackfin/cpu/start.S index 7155fc8..32b3ec7 100644 --- a/arch/blackfin/cpu/start.S +++ b/arch/blackfin/cpu/start.S @@ -65,20 +65,19 @@ 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 - /* Program the watchdog with an initial timeout of ~5 seconds. + /* Program the watchdog with default timeout of ~5 seconds. * That should be long enough to bootstrap ourselves up and * then the common u-boot code can take over. */ r0 = 0; - r0.h = HI(MSEC_TO_SCLK(CONFIG_HW_WATCHDOG_TIMEOUT_START)); + r0.h = HI(MSEC_TO_SCLK(CONFIG_WATCHDOG_TIMEOUT_MSECS)); [p4 + (WDOG_CNT - SYSMMR_BASE)] = r0; /* fire up the watchdog - R0.L above needs to be 0x0000 */ +# ifdef __ADSPBF60x__ + [p4 + (WDOG_CTL - SYSMMR_BASE)] = r0; +# else W[p4 + (WDOG_CTL - SYSMMR_BASE)] = r0; -#endif +# endif #endif
/* Turn on the serial for debugging the init process */ diff --git a/arch/blackfin/lib/board.c b/arch/blackfin/lib/board.c index c1e14e2..99970e1 100644 --- a/arch/blackfin/lib/board.c +++ b/arch/blackfin/lib/board.c @@ -279,9 +279,9 @@ void board_init_f(ulong bootflag) dcache_enable(); #endif
-#ifdef CONFIG_WATCHDOG +#ifdef CONFIG_HW_WATCHDOG serial_early_puts("Setting up external watchdog\n"); - watchdog_init(); + hw_watchdog_init(); #endif
#ifdef DEBUG diff --git a/doc/README.watchdog b/doc/README.watchdog index ee65008..f2a9d26 100644 --- a/doc/README.watchdog +++ b/doc/README.watchdog @@ -27,3 +27,6 @@ CONFIG_IMX_WATCHDOG Available for i.mx31/35/5x/6x to service the watchdog. This is not automatically set because some boards (vision2) still need to define their own hw_watchdog_reset routine. + +CONFIG_BFIN_WATCHDOG + Available for bf5xx and bf6xx to service the watchdog. diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index b1f4e0f..1da3d75 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -32,6 +32,7 @@ COBJS-y += imx_watchdog.o endif COBJS-$(CONFIG_TNETV107X_WATCHDOG) += tnetv107x_wdt.o COBJS-$(CONFIG_S5P) += s5p_wdt.o +COBJS-$(CONFIG_BFIN_WATCHDOG) += bfin_wdt.o
COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/arch/blackfin/cpu/watchdog.c b/drivers/watchdog/bfin_wdt.c similarity index 83% rename from arch/blackfin/cpu/watchdog.c rename to drivers/watchdog/bfin_wdt.c index 1886bda..2101f6e 100644 --- a/arch/blackfin/cpu/watchdog.c +++ b/drivers/watchdog/bfin_wdt.c @@ -17,7 +17,7 @@ void hw_watchdog_reset(void)
void hw_watchdog_init(void) { - bfin_write_WDOG_CNT(5 * get_sclk()); /* 5 second timeout */ + bfin_write_WDOG_CNT(CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000 * get_sclk()); hw_watchdog_reset(); bfin_write_WDOG_CTL(0x0); } diff --git a/include/configs/bfin_adi_common.h b/include/configs/bfin_adi_common.h index c986ba3..0bcccf8 100644 --- a/include/configs/bfin_adi_common.h +++ b/include/configs/bfin_adi_common.h @@ -314,5 +314,11 @@ #define CONFIG_BFIN_SPI_GPIO_CS /* Only matters if BFIN_SPI is enabled */ #define CONFIG_LZMA #define CONFIG_MONITOR_IS_IN_RAM +#ifdef CONFIG_HW_WATCHDOG +# define CONFIG_BFIN_WATCHDOG +# ifndef CONFIG_WATCHDOG_TIMEOUT_MSECS +# define CONFIG_WATCHDOG_TIMEOUT_MSECS 5000 +# endif +#endif
#endif diff --git a/include/watchdog.h b/include/watchdog.h index 8c92a0b..f821edc 100644 --- a/include/watchdog.h +++ b/include/watchdog.h @@ -90,8 +90,7 @@ void reset_4xx_watchdog(void); #endif
-/* Freescale i.MX */ -#if defined(CONFIG_IMX_WATCHDOG) && !defined(__ASSEMBLY__) +#if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__) void hw_watchdog_init(void); #endif #endif /* _WATCHDOG_H_ */