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am335x_evm: Rework bootcmd to handle two MMC devs

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The BeagleBone Black can boot from either the MMC card
or eMMC chip on board. We should try both interfaces.

This modification also allows a graceful fallback if
a device exists but boot images are not present on it.

Changes for v2:

* Fix boot partition - it should always show up as mmcblk0p2
* Fix missing FDT load

Signed-off-by: Justin Waters <justin.waters@timesys.com>
This commit is contained in:
Justin Waters 2013-07-11 09:55:00 -04:00 committed by Tom Rini
parent 2c7c03bed1
commit a3aa70afb7
1 changed files with 22 additions and 20 deletions
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42
include/configs/am335x_evm.h
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@ -131,9 +131,23 @@
"loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz\0" \
"loaduimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
"loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
"mmcboot=echo Booting from mmc ...; " \
"run mmcargs; " \
"bootm ${loadaddr} - ${fdtaddr}\0" \
"mmcboot=mmc dev ${mmcdev}; " \
"if mmc rescan; then " \
"echo SD/MMC found on device ${mmcdev};" \
"if run loadbootenv; then " \
"echo Loaded environment from ${bootenv};" \
"run importbootenv;" \
"fi;" \
"if test -n $uenvcmd; then " \
"echo Running uenvcmd ...;" \
"run uenvcmd;" \
"fi;" \
"if run loaduimage; then " \
"run loadfdt;" \
"run mmcargs; " \
"bootm ${loadaddr} - ${fdtaddr};" \
"fi;" \
"fi;\0" \
"spiboot=echo Booting from spi ...; " \
"run spiargs; " \
"sf probe ${spibusno}:0; " \
@ -165,23 +179,11 @@
#define CONFIG_BOOTCOMMAND \
"run findfdt; " \
"mmc dev ${mmcdev}; if mmc rescan; then " \
"echo SD/MMC found on device ${mmcdev};" \
"if run loadbootenv; then " \
"echo Loaded environment from ${bootenv};" \
"run importbootenv;" \
"fi;" \
"if test -n $uenvcmd; then " \
"echo Running uenvcmd ...;" \
"run uenvcmd;" \
"fi;" \
"if run loaduimage; then " \
"run loadfdt;" \
"run mmcboot;" \
"fi;" \
"else " \
"run nandboot;" \
"fi;" \
"run mmcboot;" \
"setenv mmcdev 1; " \
"setenv bootpart 1:2; " \
"run mmcboot;" \
"run nandboot;"
/* Clock Defines */
#define V_OSCK 24000000 /* Clock output from T2 */