The following table shows the boot allocation for 16 M Flash.
Table 1. 16 M Flash Boot Address Allocation
| Offset |
Length |
Description |
| 0x0 |
0x80000 |
SPL |
| 0xF0000 |
0x10000 |
U-Boot environment variables |
| 0x100000 |
0x400000 |
fw_payload.img (OpenSBI + U-Boot) |
| 0x600000 |
0x1000000 |
Reseved |
Note: Since document release 1.2, boot from SD Card or eMMC is no
longer recommended. But to maintain the code structure, the following SD/eMMC boot
address allocations are modified as "reserved". Be aware of this change when
designing your device based on JH-7110.
Table 2. SD/eMMC Boot Address Allocation
| Offset |
Length |
Description |
Comment |
| 0x0 |
0x200 |
GPT PMBR |
0x4: Backup address |
| 0x200 |
0x200 |
GPT Header |
|
| 0x400 |
0x1F_FC00 |
Reserved |
|
| 0x20_0000 |
0x20_0000 |
Reserved |
Partition 1 |
| 0x40_0000 |
0x40_0000 |
Reserved |
Partition 2 |
| 0x80_0000 |
0x1240_0000 |
Initramfs + UEnv.txt |
Partition 3 |
| 0x12C0_0000 |
End of disk |
System rootfs |
Partition 4 |
