src/security/vboot/vbnv_layout.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef __VBOOT_VBNV_LAYOUT_H__
   4 #define __VBOOT_VBNV_LAYOUT_H__
   5
   6 #define VBOOT_VBNV_BLOCK_SIZE 16        /* Size of NV storage block in bytes */
   7
   8 /* Constants for NV storage.  We use this rather than structs and
   9  * bitfields so the data format is consistent across platforms and
  10  * compilers.
  11  */
  12 #define HEADER_OFFSET                0
  13 #define HEADER_MASK                     0xC0
  14 #define HEADER_SIGNATURE                0x40
  15 #define HEADER_FIRMWARE_SETTINGS_RESET  0x20
  16 #define HEADER_KERNEL_SETTINGS_RESET    0x10
  17
  18 #define BOOT_OFFSET                  1
  19 #define BOOT_DEBUG_RESET_MODE           0x80
  20 #define BOOT_DISABLE_DEV_REQUEST        0x40
  21 #define BOOT_DISPLAY_REQUEST            0x20
  22 #define BOOT_TRY_B_COUNT_MASK           0x0F
  23
  24 #define RECOVERY_OFFSET              2
  25 #define LOCALIZATION_OFFSET          3
  26
  27 #define DEV_FLAGS_OFFSET             4
  28 #define DEV_BOOT_USB_MASK               0x01
  29 #define DEV_BOOT_SIGNED_ONLY_MASK       0x02
  30 #define DEV_ENABLE_UDC                  0x40
  31
  32 #define MISC_FLAGS_OFFSET            8
  33 #define MISC_FLAGS_BATTERY_CUTOFF_MASK  0x08
  34
  35 #define KERNEL_FIELD_OFFSET         11
  36 #define CRC_OFFSET                  15
  37
  38 #endif /* __VBOOT_VBNV_LAYOUT_H__ */