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am335x_evm: Bring in 'boot_fdt' logic from i.MX

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Bring in the 'boot_fdt' environment variable that i.MX boards use to try
and load a device tree when booting.

Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Tom Rini 2013-08-09 11:22:16 -04:00
parent ec101fdb8d
commit bc6fff9ac7
1 changed files with 16 additions and 5 deletions
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21
include/configs/am335x_evm.h
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@ -85,6 +85,7 @@
"loadaddr=0x80200000\0" \
"fdtaddr=0x80F80000\0" \
"fdt_high=0xffffffff\0" \
"boot_fdt=try\0" \
"rdaddr=0x81000000\0" \
"bootdir=/boot\0" \
"bootfile=uImage\0" \
@ -132,6 +133,20 @@
"loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz\0" \
"loaduimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
"loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
"mmcloados=run mmcargs; " \
"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
"if run loadfdt; then " \
"bootm ${loadaddr} - ${fdtaddr}; " \
"else " \
"if test ${boot_fdt} = try; then " \
"bootm; " \
"else " \
"echo WARN: Cannot load the DT; " \
"fi; " \
"fi; " \
"else " \
"bootm; " \
"fi;\0" \
"mmcboot=mmc dev ${mmcdev}; " \
"if mmc rescan; then " \
"echo SD/MMC found on device ${mmcdev};" \
@ -143,11 +158,7 @@
"echo Running uenvcmd ...;" \
"run uenvcmd;" \
"fi;" \
"if run loaduimage; then " \
"run loadfdt;" \
"run mmcargs; " \
"bootm ${loadaddr} - ${fdtaddr};" \
"fi;" \
"run mmcloados;" \
"fi;\0" \
"spiboot=echo Booting from spi ...; " \
"run spiargs; " \