arm: socfpga: Add watchdog disable for socfpga
This adds watchdog disable. It is neccessary for running Linux kernel.
Signed-off-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Tom Rini <trini@ti.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Pavel Machek <pavel@denx.de>
V2: Move RSTMGR_PERMODRST_L4WD0_LSB to reset_manager.h
Reset watchdog only if CONFIG_HW_WATCHDOG is undefined (the default)
diff --git a/arch/arm/cpu/armv7/socfpga/misc.c b/arch/arm/cpu/armv7/socfpga/misc.c
index ecae393..b633615 100644
--- a/arch/arm/cpu/armv7/socfpga/misc.c
+++ b/arch/arm/cpu/armv7/socfpga/misc.c
@@ -8,6 +8,7 @@
#include <asm/io.h>
#include <miiphy.h>
#include <netdev.h>
+#include <asm/arch/reset_manager.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -36,6 +37,19 @@
}
#endif
+int arch_cpu_init(void)
+{
+ /*
+ * If the HW watchdog is NOT enabled, make sure it is not running,
+ * for example because it was enabled in the preloader. This might
+ * trigger a watchdog-triggered reboot of Linux kernel later.
+ */
+#ifndef CONFIG_HW_WATCHDOG
+ socfpga_watchdog_reset();
+#endif
+ return 0;
+}
+
int misc_init_r(void)
{
return 0;