mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 02:33:07 +00:00
48 lines
1.7 KiB
Text
48 lines
1.7 KiB
Text
|
-------------------------------------------------
|
||
|
|
Simple steps used to test the QSPI at U-Boot
|
||
|
|
-------------------------------------------------
|
||
|
|
|
||
|
|
For #1, build the patched U-Boot and load MLO/u-boot.img
|
||
|
|
|
||
|
|
----------------------------------
|
||
|
|
Boot from another medium like MMC
|
||
|
|
----------------------------------
|
||
|
|
|
||
|
|
U-Boot# mmc dev 0
|
||
|
|
mmc0 is current device
|
||
|
|
U-Boot# fatload mmc 0 0x82000000 MLO
|
||
|
|
reading MLO
|
||
|
|
55872 bytes read in 8 ms (6.7 MiB/s)
|
||
|
|
U-Boot# fatload mmc 0 0x83000000 u-boot.img
|
||
|
|
reading u-boot.img
|
||
|
|
248600 bytes read in 19 ms (12.5 MiB/s)
|
||
|
|
|
||
|
|
--------------------------------------------------
|
||
|
|
Commands to erase/write u-boot/mlo to flash device
|
||
|
|
--------------------------------------------------
|
||
|
|
U-Boot# sf probe 0
|
||
|
|
SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB, mapped at 5c000000
|
||
|
|
U-Boot# sf erase 0 0x10000
|
||
|
|
SF: 65536 bytes @ 0x0 Erased: OK
|
||
|
|
U-Boot# sf erase 0x20000 0x10000
|
||
|
|
SF: 65536 bytes @ 0x20000 Erased: OK
|
||
|
|
U-Boot# sf erase 0x30000 0x10000
|
||
|
|
SF: 65536 bytes @ 0x30000 Erased: OK
|
||
|
|
U-Boot# sf erase 0x40000 0x10000
|
||
|
|
SF: 65536 bytes @ 0x40000 Erased: OK
|
||
|
|
U-Boot# sf erase 0x50000 0x10000
|
||
|
|
SF: 65536 bytes @ 0x50000 Erased: OK
|
||
|
|
U-Boot# sf erase 0x60000 0x10000
|
||
|
|
SF: 65536 bytes @ 0x60000 Erased: OK
|
||
|
|
U-Boot# sf write 82000000 0 0x10000
|
||
|
|
SF: 65536 bytes @ 0x0 Written: OK
|
||
|
|
U-Boot# sf write 83000000 0x20000 0x60000
|
||
|
|
SF: 393216 bytes @ 0x20000 Written: OK
|
||
|
|
|
||
|
|
For #2, set sysboot to QSPI-1 boot mode(SYSBOOT[5:0] = 100110) and power
|
||
|
|
on. ROM should find the GP header at offset 0 and load/execute SPL. SPL
|
||
|
|
then detects that ROM was in QSPI-1 mode (boot code 10) and attempts to
|
||
|
|
find a U-Boot image header at offset 0x20000 (set in the config file)
|
||
|
|
and proceeds to load that image using the U-Boot image payload offset/size
|
||
|
|
from the header. It will then start U-Boot.
|