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author | Aseda Aboagye <aaboagye@google.com> | 2021-06-15 23:11:41 -0700 |
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committer | Karthik Ramasubramanian <kramasub@google.com> | 2021-06-19 00:03:50 +0000 |
commit | e58e6f2adfb65fb960cdc41289a5186b4370fd1e (patch) | |
tree | c69e90da471a29041ba245ae44123b720f803a3c /src/mainboard/compulab/Kconfig.name | |
parent | 095f97b58f10087b1350e62d8162827c8689c7a2 (diff) |
soc/intel/common/block/gpio: Add `gpio_lock_pad()`
This commit adds a method for locking a GPIO pad configuration and its
TX state. When the configuration is locked, the following registers
become Read-Only and software writes to these registers have no effect.
Pad Configuration registers
GPI_NMI_EN
GPI_SMI_EN
GPI_GPE_EN
Note that this is only effective if the pad is owned by the host (set in
the PAD_OWN register).
Intel platforms that wish to leverage this function need to define the
PADCFGLOCK offset for their platform.
BUG=b:191189275
BRANCH=None
TEST=With some other code, call gpio_lock_pad() against a pad and verify
that the pad configuration is locked and the state of the pad cannot be
changed from the OS.
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Change-Id: Id3c0da2f6942099c0289ca1e33a33c176f49d380
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55557
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Diffstat (limited to 'src/mainboard/compulab/Kconfig.name')
0 files changed, 0 insertions, 0 deletions