am625x_evm_a53: Tweak boot command to set fdt

With the current config for tha SK-AM62, fdtfile isn't set in the U-Boot
environment. When using bootflow to boot from a block device, where the
extlinux.conf file specifies `fdtdir`, a fallback device tree is being
constructed from the `soc` (`k3`) and `board` (`am62x`) environment
variables, resulting in u-Boot trying to retrieve
`/dtbs/6.8.1+/k3-am62x.dtb`. This file doesn't exist.

The environment variables `default_device_tree` and
`default_device_tree_arch` are set in the config, the `findfdt` script
can be called to construct `fdtfile` from the environment variables set
by these config options, however this script currently isn't being run.

Calling this script results in the correct device tree being retrieved:

   Retrieving file: /dtbs/6.8.1+/ti/k3-am625-sk.dtb

Many boards are calling this script as part of their boot command. The
am62x currently isn't. Rectify this so that booting works correctly.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
Reviewed-by: Christopher Obbard <chris.obbard@collabora.com>

diff --git a/configs/am62x_evm_a53_defconfig b/configs/am62x_evm_a53_defconfig
index a25f7b22234d4aca44767f50729b5cae6bdf8922..06c7d31a6f36928fe53582fe3458f85f943d6045 100644 (file)
--- a/configs/am62x_evm_a53_defconfig
+++ b/configs/am62x_evm_a53_defconfig
@@ -29,7 +29,7 @@ CONFIG_SPL_LOAD_FIT=y
 CONFIG_SPL_LOAD_FIT_ADDRESS=0x81000000
 CONFIG_BOOTSTD_FULL=y
 CONFIG_SYS_BOOTM_LEN=0x800000
-CONFIG_BOOTCOMMAND="run envboot; bootflow scan -lb"
+CONFIG_BOOTCOMMAND="run findfdt; run envboot; bootflow scan -lb"
 CONFIG_BOARD_LATE_INIT=y
 CONFIG_SPL_MAX_SIZE=0x58000
 CONFIG_SPL_HAS_BSS_LINKER_SECTION=y