diff options
| -rw-r--r-- | arch/x86/include/asm/acpi/vbnv_layout.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpi/vbnv_layout.h b/arch/x86/include/asm/acpi/vbnv_layout.h new file mode 100644 index 0000000000..89065524d3 --- /dev/null +++ b/arch/x86/include/asm/acpi/vbnv_layout.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2020 Google LLC + */ + +#ifndef __ASM_ACPI_VBNV_LAYOUT_H__ +#define __ASM_ACPI_VBNV_LAYOUT_H__ + +#define VBOOT_VBNV_BLOCK_SIZE 16 /* Size of NV storage block in bytes */ + +/* Constants for NV storage, for use with ACPI */ +#define HEADER_OFFSET 0 +#define HEADER_MASK 0xc0 +#define HEADER_SIGNATURE 0x40 +#define HEADER_FIRMWARE_SETTINGS_RESET 0x20 +#define HEADER_KERNEL_SETTINGS_RESET 0x10 + +#define BOOT_OFFSET 1 +#define BOOT_DEBUG_RESET_MODE 0x80 +#define BOOT_DISABLE_DEV_REQUEST 0x40 +#define BOOT_DISPLAY_REQUEST 0x20 +#define BOOT_TRY_B_COUNT_MASK 0x0f + +#define RECOVERY_OFFSET 2 +#define LOCALIZATION_OFFSET 3 + +#define DEV_FLAGS_OFFSET 4 +#define DEV_BOOT_USB_MASK 0x01 +#define DEV_BOOT_SIGNED_ONLY_MASK 0x02 +#define DEV_ENABLE_UDC 0x40 + +#define MISC_FLAGS_OFFSET 8 +#define MISC_FLAGS_BATTERY_CUTOFF_MASK 0x08 + +#define KERNEL_FIELD_OFFSET 11 +#define CRC_OFFSET 15 + +#endif /* __ASM_ACPI_VBNV_LAYOUT_H__ */ |