arm: mvebu: turris_mox: add support for board rescue mode
Add necessary config options and board code to support board factory
reset / rescue mode on Turris MOX.
In order to also support invoking rescue mode from U-Boot console,
without having to press the factory reset button, put the rescue command
into `bootcmd_rescue` default environment variable. When factory reset
button is pressed, invoke rescue mode via distroboot by setting
`boot_targets` to `rescue`.
Rescue boot from console can be invoked by running
run bootcmd_rescue
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/turris_mox.h b/include/configs/turris_mox.h
index 51445ec..b148b16 100644
--- a/include/configs/turris_mox.h
+++ b/include/configs/turris_mox.h
@@ -75,12 +75,21 @@
#include <config_distro_bootcmd.h>
+#define TURRIS_MOX_BOOTCMD_RESCUE \
+ "setenv bootargs \"console=ttyMV0,115200 " \
+ "earlycon=ar3700_uart,0xd0012000\" && " \
+ "sf probe && " \
+ "sf read 0x5000000 0x190000 && " \
+ "lzmadec 0x5000000 0x5800000 && " \
+ "bootm 0x5800000"
+
#define CONFIG_EXTRA_ENV_SETTINGS \
"scriptaddr=0x4d00000\0" \
"pxefile_addr_r=0x4e00000\0" \
"fdt_addr_r=0x4f00000\0" \
"kernel_addr_r=0x5000000\0" \
"ramdisk_addr_r=0x8000000\0" \
+ "bootcmd_rescue=" TURRIS_MOX_BOOTCMD_RESCUE "\0" \
BOOTENV
#endif /* _CONFIG_TURRIS_MOX_H */