When booting over UART, sending U-Boot proper may take too much time and
MCU watchdog will reset the board before U-Boot proper is loaded.
Better disable MCU watchdog in SPL when booting over UART.
Signed-off-by: Marek Behún <marek.be...@nic.cz>
---
board/CZ.NIC/turris_omnia/turris_omnia.c | 17 ++++++++++++++++-
configs/turris_omnia_defconfig | 1 +
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/board/CZ.NIC/turris_omnia/turris_omnia.c
b/board/CZ.NIC/turris_omnia/turris_omnia.c
index a84a409f43..b0391c973d 100644
--- a/board/CZ.NIC/turris_omnia/turris_omnia.c
+++ b/board/CZ.NIC/turris_omnia/turris_omnia.c
@@ -419,12 +419,27 @@ int board_early_init_f(void)
return 0;
}
+void spl_board_init(void)
+{
+ /*
+ * If booting from UART, disable MCU watchdog in SPL, since uploading
+ * U-Boot proper can take too much time and trigger it.
+ */
+ if (get_boot_device() == BOOT_DEVICE_UART)
+ disable_mcu_watchdog();
+}
+
int board_init(void)
{
/* address of boot parameters */
gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
- disable_mcu_watchdog();
+ /*
+ * If not booting from UART, MCU watchdog was not disabled in SPL,
+ * disable it now.
+ */
+ if (get_boot_device() != BOOT_DEVICE_UART)
+ disable_mcu_watchdog();
return 0;
}
diff --git a/configs/turris_omnia_defconfig b/configs/turris_omnia_defconfig
index cd443ceb30..67f8bdadaf 100644
--- a/configs/turris_omnia_defconfig
+++ b/configs/turris_omnia_defconfig
@@ -33,6 +33,7 @@ CONFIG_SYS_CONSOLE_INFO_QUIET=y
# CONFIG_DISPLAY_BOARDINFO is not set
CONFIG_DISPLAY_BOARDINFO_LATE=y
CONFIG_MISC_INIT_R=y
+CONFIG_SPL_BOARD_INIT=y
CONFIG_SPL_I2C=y
CONFIG_CMD_MEMTEST=y
CONFIG_SYS_ALT_MEMTEST=y
--
2.31.1
