From 4289fd4ad43afaed6d1515c573efe9e42a83219f Mon Sep 17 00:00:00 2001 From: Vadim Pasternak Date: Sat, 23 Oct 2021 12:40:21 +0300 Subject: 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 Reviewed-by: Oleksandr Shamray Link: https://lore.kernel.org/r/20211023094022.4193813-3-vadimp@nvidia.com Signed-off-by: Hans de Goede --- drivers/platform/x86/mlx-platform.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'drivers/platform/x86/mlx-platform.c') 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, -- cgit v1.2.3-59-g8ed1b