| QSPI Boot source support Overview |
| ------------------- |
| 1. LS1043A |
| LS1043AQDS |
| 2. LS2080A |
| LS2080AQDS |
| 3. LS1012A |
| LS1012AQDS |
| LS1012ARDB |
| 4. LS1046A |
| LS1046AQDS |
| LS1046ARDB |
| |
| Booting from QSPI |
| ------------------- |
| Booting from QSPI requires two images, RCW and u-boot-dtb.bin. |
| The difference between QSPI boot RCW image and NOR boot image is the PBI |
| command sequence for setting the boot location pointer. It's should point |
| to the address for u-boot in QSPI flash. |
| |
| RCW image should be written to the beginning of QSPI flash device. |
| Example of using u-boot command |
| |
| => sf probe 0:0 |
| SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB |
| => sf erase 0 +<size of rcw image> |
| SF: 65536 bytes @ 0x0 Erased: OK |
| => sf write <rcw image in memory> 0 <size of rcw image> |
| SF: 164 bytes @ 0x0 Written: OK |
| |
| To get the QSPI image, build u-boot with QSPI config, for example, |
| <board_name>_qspi_defconfig. The image needed is u-boot-dtb.bin. |
| The u-boot image should be written to 0x10000(but 0x1000 for LS1043A, LS2080A). |
| |
| => sf probe 0:0 |
| SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB |
| => sf erase 10000 +<size of u-boot image> |
| SF: 589824 bytes @ 0x10000 Erased: OK |
| => sf write <u-boot image in memory> 10000 <size of u-boot image> |
| SF: 580966 bytes @ 0x10000 Written: OK |
| |
| With these two images in QSPI flash device, the board can boot from QSPI. |
