Enable the hardware watchdog on bx50v3 to cause it to reset in the event the board hangs.
Configure GPIO_9 pin as WDOG1_B so that a watchdog timeout results in a full system reset.
The watchdog is used and reconfigured by systemd approximately 1.7 seconds into boot. Adding a few seconds for U-Boot and a few more seconds as a safety margin.
Note that the PCIe controller is _not_ put back into a safe state prior to board reset. This is a problem if board reset is implemented as CPU reset.
Signed-off-by: Ian Ray ian.ray@ge.com Signed-off-by: Martyn Welch martyn.welch@collabora.co.uk --- board/ge/bx50v3/bx50v3.c | 1 + include/configs/ge_bx50v3.h | 4 ++++ 2 files changed, 5 insertions(+)
diff --git a/board/ge/bx50v3/bx50v3.c b/board/ge/bx50v3/bx50v3.c index 07b4298..48c26e0 100644 --- a/board/ge/bx50v3/bx50v3.c +++ b/board/ge/bx50v3/bx50v3.c @@ -659,6 +659,7 @@ static iomux_v3_cfg_t const misc_pads[] = { MX6_PAD_EIM_OE__GPIO2_IO25 | MUX_PAD_CTRL(NC_PAD_CTRL), MX6_PAD_EIM_BCLK__GPIO6_IO31 | MUX_PAD_CTRL(NC_PAD_CTRL), MX6_PAD_GPIO_1__GPIO1_IO01 | MUX_PAD_CTRL(NC_PAD_CTRL), + MX6_PAD_GPIO_9__WDOG1_B | MUX_PAD_CTRL(NC_PAD_CTRL), }; #define SUS_S3_OUT IMX_GPIO_NR(4, 11) #define WIFI_EN IMX_GPIO_NR(6, 14) diff --git a/include/configs/ge_bx50v3.h b/include/configs/ge_bx50v3.h index 94e406c..162e915 100644 --- a/include/configs/ge_bx50v3.h +++ b/include/configs/ge_bx50v3.h @@ -44,6 +44,10 @@ #define CONFIG_REVISION_TAG #define CONFIG_SYS_MALLOC_LEN (10 * SZ_1M)
+#define CONFIG_HW_WATCHDOG +#define CONFIG_IMX_WATCHDOG +#define CONFIG_WATCHDOG_TIMEOUT_MSECS 6000 + #define CONFIG_LAST_STAGE_INIT
#define CONFIG_MXC_GPIO