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* cmd_part: add partition-related commandStephen Warren2012-09-25-0/+105
This implements the following: part uuid mmc 0:1 -> print partition UUID part uuid mmc 0:1 uuid -> set environment variable to partition UUID part list mmc 0 -> list the partitions on the specified device "part uuid" can be useful when writing a bootcmd which searches all known devices for something bootable, and then wants the kernel to use the same partition as the root device, e.g.: part uuid ${devtype} ${devnum}:${rootpart} uuid setenv bootargs root=PARTUUID=${uuid} ... Signed-off-by: Stephen Warren <swarren@nvidia.com>