[U-Boot] [PATCH v1] blackfin: Move blackfin watchdog driver out of the blackfin arch folder.

[Sonic Zhang]

From: Sonic Zhang <sonic.zhang at 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 at 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_ */
-- 
1.7.0.4