I used L3.14.28 and u-boot-2014 to start my imx6s board.
If I didn't made a mistake, the uboot code in u-boot/include/configs/mx6sabre_common.h shows the uboot args section in emmc:
#if defined CONFIG_ENV_IS_IN_MMC :
#define CONFIG_ENV_SIZE (8 * 1024)
#define CONFIG_ENV_OFFSET (8 * 64 * 1024)
In mfg tool's config file uc12.xml , I see the uboot section is :
/dev/mmcblk$mmcboot0 bs=512 seek=2
so my shell to write uboot is:
##clear u-boot arg
dd if=/dev/zero of=/dev/mmcblk3 bs=1k seek=512 conv=fsync count=8
##burn uboot
echo 0 > /sys/block/mmcblk3boot0/force_ro
dd if=$FILE of=/dev/mmcblk3boot0 bs=512 seek=2
echo 1 > /sys/block/mmcblk3boot0/force_ro
echo 8 > /sys/block/mmcblk3/device/boot_config
First, I burn an init uboot, and set its bootdelay=1;
Then I boot system, run the shell and reset my board, I confirmed the uboot is updated, but the enviroment not erased.
the bootdelay still equal 1.
Why?
