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[platform-next,2/3] platform/x86: mlx-platform: Add BIOS attributes for CoffeeLake COMEx based systems

Message ID 20211023094022.4193813-3-vadimp@nvidia.com (mailing list archive)
State Accepted, archived
Headers show
Series platform/x86: mlx-platform: Extend to support new systems and additional user interfaces | expand

Commit Message

Vadim Pasternak Oct. 23, 2021, 9:40 a.m. UTC 
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>
---
 drivers/platform/x86/mlx-platform.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
diff mbox series

Patch

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
@@ -2917,6 +2917,30 @@  static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
 		.bit = GENMASK(7, 0),
 		.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,