From ArmadeusWiki
APF6 eMMC layout
By default, the 4GB eMMC on APF6 board has 4 physical/hardware partitions:
Boot0
| Boot1
| RPMB
| User Data
|
Name | U-Boot name | Size | Comment
|
boot0 | mmc dev 0 1 | 2MBytes | U-Boot is installed on this partition
|
boot1 | mmc dev 0 2 | 2MBytes | Not used
|
rpmb | mmc dev 0 3 | 512KBytes | Not used
|
User Data | mmc dev 0 0 | remaining space | Kernel, device tree and rootfs
|
Boot0 partition layout
Offset (blocks) | Offset (bytes) | Comment
|
0 | 0 |
|
0x02 | 1 KB | U-Boot SPL (apf6-u-boot.spl)
|
0x8a | 69 KB | U-Boot IMG (apf6-u-boot.img)
|
| 512 KB |
|
| 1024 KB | U-Boot environment
|
| 1536 KB | Redundant U-Boot environment
|
User Data partition layout
There are two primary partitions on the "User Data" physical partition:
Name | U-Boot device | Linux device | Offset (blocks) | Size | Comment
|
Boot | mmc 0:1 | /dev/mmcblk2p1 | 2048 (0x800) | 24 MBytes (49152 blocks) | The kernel and the device tree (inside a dtbs/ directory) are on this partition (ext4 formatted)
|
Rootfs | mmc 0:2 | /dev/mmcblk2p2 | (0x18800) | Rest of space (<3816448 blocks) | the rootfs is on this partition (ext4 formatted)
|
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