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OMAP3: am3517_evm: SD/MMC boot with uEnv.txt, zImage, and FDT

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Boot with the Linux zImage and am3517-evm.dtb pair, when SD/MMC media
is present. This behavior can be overridden by creating a 'uEnv.txt'
file with 'uenvcmd' defined.

To boot an existing 'uImage', create the following 'uEnv.txt':

[start]-----------------------------------------------------------------

loaduimage=fatload mmc 0:1 ${loadaddr} ${bootfile}
uenvcmd=run loaduimage; run mmcargs; bootm ${loadaddr}

[end]-------------------------------------------------------------------

Inspired by similar patches, for other OMAP3 boards, from EEWiki
- https://github.com/eewiki/u-boot-patches/tree/master/v2016.01

Signed-off-by: Derald D. Woods <woods.technical@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Derald D. Woods 2016-02-07 20:54:47 -06:00 committed by Tom Rini
parent 823ecd72bb
commit 45776e36ec
1 changed files with 37 additions and 11 deletions
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48
include/configs/am3517_evm.h
View file

@ -132,6 +132,10 @@
#define CONFIG_CMD_EXT2 /* EXT2 Support */
#define CONFIG_CMD_FAT /* FAT support */
#define CONFIG_CMD_JFFS2 /* JFFS2 Support */
#define CONFIG_CMD_EXT4
#define CONFIG_CMD_EXT4_WRITE
#define CONFIG_CMD_BOOTZ
#define CONFIG_CMD_I2C /* I2C serial bus support */
#define CONFIG_CMD_MMC /* MMC support */
@ -184,19 +188,34 @@
#define CONFIG_EXTRA_ENV_SETTINGS \
"loadaddr=0x82000000\0" \
"console=ttyO2,115200n8\0" \
"fdtfile=am3517-evm.dtb\0" \
"fdtaddr=0x82C00000\0" \
"vram=16M\0" \
"bootenv=uEnv.txt\0" \
"cmdline=\0" \
"optargs=\0" \
"mmcdev=0\0" \
"mmcpart=1\0" \
"mmcroot=/dev/mmcblk0p2 rw\0" \
"mmcrootfstype=ext4 rootwait fixrtc\0" \
"mmcargs=setenv bootargs console=${console} " \
"root=/dev/mmcblk0p2 rw rootwait\0" \
"${optargs} " \
"root=${mmcroot} " \
"rootfstype=${mmcrootfstype} " \
"${cmdline}\0" \
"nandargs=setenv bootargs console=${console} " \
"root=/dev/mtdblock4 rw " \
"rootfstype=jffs2\0" \
"loadbootscript=fatload mmc ${mmcdev} ${loadaddr} boot.scr\0" \
"loadbootenv=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${bootenv}\0"\
"importbootenv=echo Importing environment from mmc ...; " \
"env import -t ${loadaddr} ${filesize}\0" \
"bootscript=echo Running bootscript from mmc ...; " \
"source ${loadaddr}\0" \
"loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage\0" \
"loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${bootfile}\0" \
"loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdtaddr} ${fdtfile}\0" \
"mmcboot=echo Booting from mmc ...; " \
"run mmcargs; " \
"bootm ${loadaddr}\0" \
"bootz ${loadaddr} - ${fdtaddr}\0" \
"nandboot=echo Booting from nand ...; " \
"run nandargs; " \
"nand read ${loadaddr} 280000 400000; " \
@ -204,13 +223,20 @@
#define CONFIG_BOOTCOMMAND \
"mmc dev ${mmcdev}; if mmc rescan; then " \
"if run loadbootscript; then " \
"run bootscript; " \
"else " \
"if run loaduimage; then " \
"run mmcboot; " \
"else run nandboot; " \
"fi; " \
"echo SD/MMC found on device $mmcdev; " \
"if run loadbootenv; then " \
"run importbootenv; " \
"fi; " \
"echo Checking if uenvcmd is set ...; " \
"if test -n $uenvcmd; then " \
"echo Running uenvcmd ...; " \
"run uenvcmd; " \
"fi; " \
"echo Running default loadimage ...; " \
"setenv bootfile zImage; " \
"if run loadimage; then " \
"run loadfdt; " \
"run mmcboot; " \
"fi; " \
"else run nandboot; fi"