1 QSPI Boot source support Overview 2 ------------------- 3 1. LS1043A 4 LS1043AQDS 5 2. LS2080A 6 LS2080AQDS 7 3. LS1012A 8 LS1012AQDS 9 LS1012ARDB 10 4. LS1046A 11 LS1046AQDS 12 LS1046ARDB 13 14 Booting from QSPI 15 ------------------- 16 Booting from QSPI requires two images, RCW and u-boot-dtb.bin. 17 The difference between QSPI boot RCW image and NOR boot image is the PBI 18 command sequence for setting the boot location pointer. It's should point 19 to the address for u-boot in QSPI flash. 20 21 RCW image should be written to the beginning of QSPI flash device. 22 Example of using u-boot command 23 24 => sf probe 0:0 25 SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB 26 => sf erase 0 +<size of rcw image> 27 SF: 65536 bytes @ 0x0 Erased: OK 28 => sf write <rcw image in memory> 0 <size of rcw image> 29 SF: 164 bytes @ 0x0 Written: OK 30 31 To get the QSPI image, build u-boot with QSPI config, for example, 32 <board_name>_qspi_defconfig. The image needed is u-boot-dtb.bin. 33 The u-boot image should be written to 0x10000(but 0x1000 for LS1043A, LS2080A). 34 35 => sf probe 0:0 36 SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB 37 => sf erase 10000 +<size of u-boot image> 38 SF: 589824 bytes @ 0x10000 Erased: OK 39 => sf write <u-boot image in memory> 10000 <size of u-boot image> 40 SF: 580966 bytes @ 0x10000 Written: OK 41 42 With these two images in QSPI flash device, the board can boot from QSPI. 43
