MMC

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How to boot from the eMMC boot partition?[1][2]

# echo 0 > /sys/block/mmcblk1boot1/force_ro

ext csd

BOOT_BUS_WIDTH[177]

PARTITION_CONFIG (before BOOT_CONFIG)[179]

Resources

http://rere.qmqm.pl/~mirq/JESD84-A44.pdf

References

  1. ↑ https://kernel.googlesource.com/pub/scm/linux/kernel/git/cjb/mmc-utils/+/7bd1320b2cb38f040ab5cf017d17e283496690bf
  2. ↑ https://community.nxp.com/thread/312758
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