diff options
| author | Vadim Pasternak <vadimp@nvidia.com> | 2021-10-23 12:40:21 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-10-27 16:29:03 +0200 |
| commit | 4289fd4ad43afaed6d1515c573efe9e42a83219f (patch) | |
| tree | 4b0a5080295b36c3ad57e992e0d0b101e276787f /drivers | |
| parent | 9045512ca6cdb221cd1ed32d483eac3c30c53bed (diff) | |
platform/x86: mlx-platform: Add BIOS attributes for CoffeeLake COMEx based systems
Extend systems of class VMOD0010 equipped with CoffeeLake COMEx module
with BIOS related attributes to represent various BIOS statuses.
These attributes "bios_active_image", "bios_auth_fail",
"bios_upgrade_fail", "bios_safe_mode" has been already added to modular
system. This all of them are already documented.
- "bios_active_image" - location of current active BIOS image (0: Top,
1: Bottom. The reported value should correspond to value expected by
OS in case of BIOS safe mode is 0. This bit is related to Intel
top-swap feature of DualBios on the same flash.
- "bios_auth_fail": BIOS upgrade is failed because provided BIOS image
is not signed correctly.
- "bios_upgrade_fail" BIOS upgrade is failed by some reason not related
to authentication. For example, due to physical SPI flash problem.
- "bios_safe_mod": - 0 : if BIOS is booted from a supposed active image;
1 : BIOS safe mechanism was enforced by hardware (CPLD).
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Oleksandr Shamray <oleksandrs@nvidia.com>
Link: https://lore.kernel.org/r/20211023094022.4193813-3-vadimp@nvidia.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/mlx-platform.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c index 06fe58aaa23b..3d017e889ce5 100644 --- a/drivers/platform/x86/mlx-platform.c +++ b/drivers/platform/x86/mlx-platform.c @@ -2918,6 +2918,30 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = { .mode = 0444, }, { + .label = "bios_safe_mode", + .reg = MLXPLAT_CPLD_LPC_REG_GPCOM0_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(4), + .mode = 0444, + }, + { + .label = "bios_active_image", + .reg = MLXPLAT_CPLD_LPC_REG_GPCOM0_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(5), + .mode = 0444, + }, + { + .label = "bios_auth_fail", + .reg = MLXPLAT_CPLD_LPC_REG_GPCOM0_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(6), + .mode = 0444, + }, + { + .label = "bios_upgrade_fail", + .reg = MLXPLAT_CPLD_LPC_REG_GPCOM0_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(7), + .mode = 0444, + }, + { .label = "voltreg_update_status", .reg = MLXPLAT_CPLD_LPC_REG_GP0_RO_OFFSET, .mask = MLXPLAT_CPLD_VOLTREG_UPD_MASK, |