diff options
| author | Johnny Lin <johnny_lin@wiwynn.com> | 2022-12-19 21:36:00 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-01-11 14:57:20 +0000 |
| commit | 651e3e06a5b2374acf9d2ba3328d8318d8f52fe9 (patch) | |
| tree | 3e03d4ce23320e3351bf6d0e6c9b317ac17f8ac4 /src | |
| parent | da538cb38f559052cce2879ad8b96a6014390af6 (diff) | |
| download | coreboot-651e3e06a5b2374acf9d2ba3328d8318d8f52fe9.tar.gz coreboot-651e3e06a5b2374acf9d2ba3328d8318d8f52fe9.tar.bz2 coreboot-651e3e06a5b2374acf9d2ba3328d8318d8f52fe9.zip | |
drivers/ocp/vpd: add get_cxl_mode_from_vpd()
cxl_mode VPD variable supports 3 modes: CXL_DISABLED,
CXL_SYSTEM_MEMORY and CXL_SPM.
Change-Id: Ib3bf85fbe687680db3c11efa908c4fb351be9c44
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71100
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/drivers/ocp/include/vpd.h | 1 | ||||
| -rw-r--r-- | src/drivers/ocp/vpd/vpd_util.c | 5 |
2 files changed, 6 insertions, 0 deletions
diff --git a/src/drivers/ocp/include/vpd.h b/src/drivers/ocp/include/vpd.h index f4517c46605b..d58f79120fa5 100644 --- a/src/drivers/ocp/include/vpd.h +++ b/src/drivers/ocp/include/vpd.h @@ -81,4 +81,5 @@ enum cxl_memory_mode { int get_int_from_vpd_range(const char *const key, const int fallback, const int min, const int max); bool get_bool_from_vpd(const char *const key, const bool fallback); +int get_cxl_mode_from_vpd(void); #endif diff --git a/src/drivers/ocp/vpd/vpd_util.c b/src/drivers/ocp/vpd/vpd_util.c index 3a66b884f27c..27d7bccb5cd9 100644 --- a/src/drivers/ocp/vpd/vpd_util.c +++ b/src/drivers/ocp/vpd/vpd_util.c @@ -38,3 +38,8 @@ bool get_bool_from_vpd(const char *const key, const bool fallback) return (bool)val; } + +int get_cxl_mode_from_vpd(void) +{ + return get_int_from_vpd_range(CXL_MODE, CXL_MODE_DEFAULT, 0, CXL_MODE_MAX-1); +} |