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configs: am65x_evm: Add support for applying overlays

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This will allow for downloading and applying overlays from an MMC/SD
boot media based on the overlay_files ENV variable containing a list
of overlay files.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Andreas Dannenberg 2019-06-04 18:08:27 -05:00 committed by Tom Rini
parent 03facc7271
commit 623df9cc03
2 changed files with 11 additions and 1 deletions
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3
configs/am65x_evm_a53_defconfig
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@ -16,7 +16,7 @@ CONFIG_DISTRO_DEFAULTS=y
# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
CONFIG_SPL_LOAD_FIT=y
CONFIG_OF_BOARD_SETUP=y
CONFIG_BOOTCOMMAND="run findfdt; run envboot; run init_${boot}; run get_kern_${boot}; run get_fdt_${boot}; run run_kern"
CONFIG_BOOTCOMMAND="run findfdt; run envboot; run init_${boot}; run get_kern_${boot}; run get_fdt_${boot}; run get_overlay_${boot}; run run_kern"
# CONFIG_DISPLAY_CPUINFO is not set
CONFIG_SPL_TEXT_BASE=0x80080000
CONFIG_SPL_SYS_MALLOC_SIMPLE=y
@ -89,3 +89,4 @@ CONFIG_SYSRESET=y
CONFIG_SPL_SYSRESET=y
CONFIG_SYSRESET_TI_SCI=y
CONFIG_FAT_WRITE=y
CONFIG_OF_LIBFDT_OVERLAY=y

9
include/configs/am65x_evm.h
View File

@ -70,6 +70,7 @@
"setenv overlay_files ${name_overlays}\0" \
"loadaddr=0x80080000\0" \
"fdtaddr=0x82000000\0" \
"overlayaddr=0x83000000\0" \
"name_kern=Image\0" \
"console=ttyS2,115200n8\0" \
"args_all=setenv optargs earlycon=ns16550a,mmio32,0x02800000\0" \
@ -84,6 +85,14 @@
"rd_spec=-\0" \
"init_mmc=run args_all args_mmc\0" \
"get_fdt_mmc=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${name_fdt}\0" \
"get_overlay_mmc=" \
"fdt address ${fdtaddr};" \
"fdt resize 0x100000;" \
"for overlay in $overlay_files;" \
"do;" \
"load mmc ${bootpart} ${overlayaddr} ${bootdir}/${overlay};" \
"fdt apply ${overlayaddr};" \
"done;\0" \
"get_kern_mmc=load mmc ${bootpart} ${loadaddr} " \
"${bootdir}/${name_kern}\0" \
"partitions=" PARTS_DEFAULT