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authorNicholas Chin <nic.c3.14@gmail.com>2024-01-05 14:38:47 -0700
committerNicholas Chin <nic.c3.14@gmail.com>2024-01-05 14:48:38 -0700
commit051b17f4fe3bf6cd87624433746d4d57b09b0613 (patch)
tree56ca2c267316219d599610abe48f0dc96a8e2206 /util/nvmutil/Makefile
parentd2de03cefa67e69fc3cc4eb75ebdbf34e1da71d5 (diff)
README.md: Add notes about iopl and AC adapter requirement
In order for the EC to maintain the state of whether or not to set the flash descriptor override across a power cycle, the AC adapter must be connected, as the system leaves the voltage rail that the EC uses powered under this condition. Without this, the utility may fail, continually asking the user to power off and on. On Linux, CONFIG_X86_IOPL_IOPERM must be set for the kernel, or else the iopl call will error with "Function not implemented". Make a note of this in case a user runs into this issue. Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
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