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>

arch/blackfin/cpu/initcode.c

@@ -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

arch/blackfin/cpu/start.S

@@ -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
@@ -78,6 +79,7 @@ ENTRY(_start)
 	/* 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 */
 	serial_early_init

include/configs/bf609-ezkit.h

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