imx: imx8mn_beacon: Fix USB booting

The i.MX8M Nano can boot over USB using the boot ROM instead of
adding extra code to SPL to support USB drivers, etc.  However,
when booting from USB, the environment doesnt' know where to load
and causes a hang.  Fix this hang by supporting CONFIG_ENV_IS_NOWHERE=y.
It only falls back to this condition when booting from USB, so it
does not impact MMC booting.

Suggested-by: Michael Nazzareno Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

diff --git a/configs/imx8mn_beacon_2g_defconfig b/configs/imx8mn_beacon_2g_defconfig
index 8b98d687ec81aa00950ba4c6d8d53179bf2dca40..1766a43cce56e63c67bbd37d1c5c8dd7f2b5debf 100644 (file)
--- a/configs/imx8mn_beacon_2g_defconfig
+++ b/configs/imx8mn_beacon_2g_defconfig
@@ -66,6 +66,7 @@ CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
 CONFIG_OF_SPL_REMOVE_PROPS="interrupt-parent interrupts"
 CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_NOWHERE=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SYS_MMC_ENV_DEV=2

diff --git a/configs/imx8mn_beacon_defconfig b/configs/imx8mn_beacon_defconfig
index a707ee664e779a50775be7e3d79de142d7fe6466..8ac36121aaba5abf6c841ce0be34dd3fc95577e2 100644 (file)
--- a/configs/imx8mn_beacon_defconfig
+++ b/configs/imx8mn_beacon_defconfig
@@ -66,6 +66,7 @@ CONFIG_CMD_FAT=y
 CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
 CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_NOWHERE=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SYS_MMC_ENV_DEV=2