Hi Stephen,
On 28/11/2023 20:07, Stephen Graf wrote:
Below is the consol log from trying to use mtd_debug write. It returned immediately with a strange success message.
root@orangepizero3:~# mtd_debug write /dev/mtd0 0 0xf0000 /home/sysadmin/u-boot-sunxi-with-spl.bin file_to_flash: fread, size 0xf0000, n 0xf0000 fread(): Success
interesting, I was under the impression that "mtd_debug write" would be the way to write to flash. In hindsight, the "debug" in that name should have probably put me off. Anyway, "cat" is probably not a good choice, "dd" is better, but it looks like "flashcp" (also part of mtdutils) is the go-to tool, since it does the required erasing automatically and also reportedly does some error detection. Can you please test this? # flashcp u-boot-sunxi-with-spl.bin /dev/mtd0 I would test this on my end ASAP as well.
Do you feel like sending a patch to the U-Boot documentation to get this changed then?
Thanks, Andre
I then used the cat command to write to the SPI flash which took a few seconds to execute:
root@orangepizero3:~# cat /home/sysadmin/u-boot-sunxi-with-spl.bin > /dev/mtd0
I tried to follow the u-boot documentation on writing the SPI flash but had problems with the write command. When issued it returned immediately. The erase command took about 5 sec to execute. I researched use of mtd commands and got a suggestion to use cat instead, which worked.
"root@orangepizero3:~# mtdinfo Count of MTD devices: 1 Present MTD devices: mtd0 Sysfs interface supported: yes root@orangepizero3:~# mtd_debug erase /dev/mtd0 0 0xf0000 Erased 983040 bytes from address 0x00000000 in flash root@orangepizero3:~# mtd_debug write /dev/mtd0 0 0xf0000 /home/sysadmin/u-boot-sunxi-with-spl.bin file_to_flash: fread, size 0xf0000, n 0xf0000 fread(): Success