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 --- include/configs/am3517_evm.h | 48 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 37 insertions(+), 11 deletions(-)

diff --git a/include/configs/am3517_evm.h b/include/configs/am3517_evm.h index 4547d7f..4d662ad 100644 --- a/include/configs/am3517_evm.h +++ b/include/configs/am3517_evm.h @@ -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"