I do have a requirement to boot the Beagle Bone Black from the Boot
Partition instead of the user level partitions.
i am using 3.14.31 version of the kernel from Robert Nelson, and also have
the latest u-boot. Sorry for putting up the details, but here are my
attempts to boot from emmc:
The RAW mode to emmc
# Ensure we are able to talk with this mmc device
U-Boot # mmc rescan
U-Boot # tftp 81000000 am335x/MLO
# Write to two of the backup locations ROM uses
U-Boot # mmc write 81000000 100 100
U-Boot # mmc write 81000000 200 100
# Write U-Boot to the location set in the config
U-Boot # tftp 81000000 am335x/u-boot.img
U-Boot # mmc write 81000000 300 400
# Load kernel and device tree into memory, perform export
U-Boot # tftp 81000000 am335x/uImage
U-Boot # run findfdt
U-Boot # tftp ${fdtaddr} am335x/${fdtfile}
U-Boot # run mmcargs
U-Boot # spl export fdt 81000000 – ${fdtaddr}
# Write the updated device tree to MMC
U-Boot # mmc write ${fdtaddr} 80 80
# Write the uImage to MMC
U-Boot # mmc write 81000000 900 2000
And also configured the emmc from u-boot using:
*U-Boot # mmc bootbus 1 2 0 2 U-Boot # mmc partconf 1 1 1 0 U-Boot # mmc
rst-function 1 1*
And also tried throught kernel mmc-utils
PARTION_CONFIG with b111 value
Kindly let me know if somebody has attempted this before, or atleast some
pointers regarding the same.
Thanks,
pratap
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