Attention is currently required from: Nico Huber, Angel Pons, Sergii Dmytruk.

Sergii Dmytruk uploaded patch set #18 to this change.

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[RFC][OTP] spi25_statusreg: support reading/writing security register

Not to be confused with "secure registers" of OTP.

Security register is a dedicated status register for security-related
bits. You don't write its value directly, issuing corresponding write
command with no data just sets OTP bit to 1 automatically.

No WREN is necessary, but at least some datasheets indicate BUSY state
after write command.

Unlike cases where OTP bit is part of SR and can only be written while
in OTP mode, security register can only be written outside of the mode.

Change-Id: Iae1753ca4cb051127a5bcbeba7f064053adb8dae
Signed-off-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
---
M flash.h
M spi.h
M spi25_statusreg.c
3 files changed, 74 insertions(+), 28 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/09/59709/18

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