| Brian Ma | 816dbb7 | 2023-05-10 14:49:35 +0800 | [diff] [blame] | 1 | # short-description: Create an image for eMMC |
| 2 | # long-description: Creates an eMMC card image for the User Data Area that can |
| 3 | # be used with the Nuvoton SoC family. |
| 4 | # |
| 5 | # Assumes a minimum flash size of 1GB. |
| 6 | # Assumes U-Boot is stored elsewhere, such as an eMMC boot volume or NOR flash. |
| 7 | # |
| 8 | # --- - ---------- -------- -------- -------- -------- ------ ------- |
| 9 | # |GPT| | reserved | boot-a | boot-b | rofs-a | rofs-b | rwfs |GPT-sec| |
| 10 | # --- - ---------- -------- -------- -------- -------- ------ ------- |
| 11 | # ^ 1MB 64MB 64MB 256MB 256MB 256MB |
| 12 | # | |
| 13 | # 0x5000 |
| 14 | # |
| 15 | # Primary GPT size (Beginning of image): |
| 16 | # 512B (Protective MBR) + 512B (Primary Header) + 16KB (Primary Table) |
| 17 | # First partition (u-boot-env) is 4K-aligned, which puts it at offset 0x5000 |
| 18 | # |
| 19 | # Secondary GPT size (End of image): |
| 20 | # 16KB (Secondary Table) + 512B (Secondary Header) |
| 21 | |
| 22 | bootloader --ptable gpt |
| 23 | |
| 24 | # Hint: bootimg-partition size must be same as MMC_BOOT_PARTITION_SIZE |
| 25 | # Note: the partition layout above is SoC default value, it may change by user |
| 26 | # set WKS_ROFS_SIZE, WKS_RWFS_SIZE or MMC_BOOT_PARTITION_SIZE. |
| 27 | part --align 4 --fixed-size 1M |
| 28 | part --fstype=ext4 --fixed-size ${MMC_BOOT_PARTITION_SIZE}K --source bootimg-partition --label boot-a |
| 29 | part --fstype=ext4 --fixed-size ${MMC_BOOT_PARTITION_SIZE}K --source bootimg-partition --label boot-b |
| 30 | part --fstype=ext4 --fixed-size ${WKS_ROFS_SIZE} --source rootfs --label rofs-a |
| 31 | part --fstype=ext4 --fixed-size ${WKS_ROFS_SIZE} --source rootfs --label rofs-b |
| 32 | part --fstype=ext4 --fixed-size ${WKS_RWFS_SIZE} --label rwfs |