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33 lines
1.5 KiB
Plaintext
33 lines
1.5 KiB
Plaintext
# short-description: Create an image for eMMC
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# long-description: Creates an eMMC card image for the User Data Area that can
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# be used with the Nuvoton SoC family.
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#
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# Assumes a minimum flash size of 1GB.
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# Assumes U-Boot is stored elsewhere, such as an eMMC boot volume or NOR flash.
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#
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# --- - ---------- -------- -------- -------- -------- ------ -------
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# |GPT| | reserved | boot-a | boot-b | rofs-a | rofs-b | rwfs |GPT-sec|
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# --- - ---------- -------- -------- -------- -------- ------ -------
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# ^ 1MB 64MB 64MB 256MB 256MB 256MB
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# |
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# 0x5000
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#
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# Primary GPT size (Beginning of image):
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# 512B (Protective MBR) + 512B (Primary Header) + 16KB (Primary Table)
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# First partition (u-boot-env) is 4K-aligned, which puts it at offset 0x5000
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#
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# Secondary GPT size (End of image):
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# 16KB (Secondary Table) + 512B (Secondary Header)
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bootloader --ptable gpt
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# Hint: bootimg-partition size must be same as MMC_BOOT_PARTITION_SIZE
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# Note: the partition layout above is SoC default value, it may change by user
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# set WKS_ROFS_SIZE, WKS_RWFS_SIZE or MMC_BOOT_PARTITION_SIZE.
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part --align 4 --fixed-size 1M
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part --fstype=ext4 --fixed-size ${MMC_BOOT_PARTITION_SIZE}K --source bootimg-partition --label boot-a
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part --fstype=ext4 --fixed-size ${MMC_BOOT_PARTITION_SIZE}K --source bootimg-partition --label boot-b
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part --fstype=ext4 --fixed-size ${WKS_ROFS_SIZE} --source rootfs --label rofs-a
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part --fstype=ext4 --fixed-size ${WKS_ROFS_SIZE} --source rootfs --label rofs-b
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part --fstype=ext4 --fixed-size ${WKS_RWFS_SIZE} --label rwfs
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