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| author | Joel Kitching <kitching@google.com> | 2020-02-25 11:11:52 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-02-26 11:05:48 +0000 |
| commit | 91300814d66aaa78f9b85295957d0a28dad7c4c7 (patch) | |
| tree | b86a7f660be9df6a05d71b1674ae3e4d0d8eb035 /host/arch | |
| parent | 3354deef704a272e7c0e0a68173313dbd0e0ab67 (diff) | |
| download | vboot-91300814d66aaa78f9b85295957d0a28dad7c4c7.tar.gz | |
crossystem: use wpsw_boot as fallback for wpsw_cur
In preparation for deprecating wpsw_boot, update wpsw_cur
to use wpsw_boot as a fallback value.
The source of wpsw_boot will still be deprecated on devices
using new firmware, but in those cases, we are absolutely
certain that wpsw_cur will work.
BUG=b:124141368, chromium:950723
TEST=make clean && make runtests
BRANCH=none
Change-Id: I77ab9c6b827ef2c033ae46b7b01b12465101c0a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2071633
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
Diffstat (limited to 'host/arch')
| -rw-r--r-- | host/arch/x86/lib/crossystem_arch.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/host/arch/x86/lib/crossystem_arch.c b/host/arch/x86/lib/crossystem_arch.c index 2fd2f530..1e51cb0b 100644 --- a/host/arch/x86/lib/crossystem_arch.c +++ b/host/arch/x86/lib/crossystem_arch.c @@ -803,6 +803,9 @@ int VbGetArchPropertyInt(const char* name) value = ReadGpio(GPIO_SIGNAL_TYPE_RECOVERY); } else if (!strcasecmp(name,"wpsw_cur")) { value = ReadGpio(GPIO_SIGNAL_TYPE_WP); + /* Use "write-protect at boot" as a fallback value. */ + if (-1 == value) + value = ReadFileBit(ACPI_CHSW_PATH, CHSW_WP_BOOT); if (-1 != value && FwidStartsWith("Mario.")) value = 1 - value; /* Mario reports this backwards */ } else if (!strcasecmp(name,"recoverysw_ec_boot")) { |