| Anatolij Gustschin | 6322fc1 | 2024-01-15 14:51:30 +0100 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| 2 | /* |
| 3 | * Struct for boot image source description for placing in last |
| 4 | * two SPI NOR flash sectors on legcom. |
| 5 | */ |
| 6 | |
| 7 | struct boot_img_src { |
| 8 | u8 magic; /* Must be 'B' = 0x42 */ |
| 9 | u8 flags; /* flags to specify mmcblk[0|1] boot[0|1] */ |
| 10 | u8 crc8; /* CRC-8 over above two bytes */ |
| 11 | } __packed; |
| 12 | |
| 13 | /* |
| 14 | * Bit definition in boot_img_src.flags: |
| 15 | * Bit 0: mmcblk device 0 or 1 (1 - if this bit set) |
| 16 | * Bit 1: mmcblk boot partition 0 or 1. |
| 17 | * for eMMC: boot0 if this bit is cleared, boot1 - if set |
| 18 | * for SD-card the boot partition value will always be 0 |
| 19 | * (independent of the value of this bit) |
| 20 | * |
| 21 | */ |
| 22 | #define BOOT_SRC_MMC1 BIT(0) |
| 23 | #define BOOT_SRC_PART1 BIT(1) |
| 24 | |
| 25 | /* Offset of the first boot image source descriptor in SPI NOR */ |
| 26 | #define SPI_FLASH_BOOT_SRC_OFFS 0xFE0000 |
| 27 | #define SPI_FLASH_SECTOR_SIZE 0x10000 |