11-15-2022, 04:18 PM
>You pretty much need to have U-boot on the eMMC
This is not true, sure, my emmc 1st 16M had /dev/zero written and then restored mbr written to it
But really, what the boot rom is looking for is idbloader, the signature, it is a raw read
@ 0 on SPI,,,, @(64*512) on emmc, then SD
If you check every idbloader you have, the first 5 bytes are always the same, this is the signature
3b 8c dc fc be ,,,,,(idbloader activates memory on mb)
Then, when it has enough memory, uboot is loaded from the same media
This is not true, sure, my emmc 1st 16M had /dev/zero written and then restored mbr written to it
But really, what the boot rom is looking for is idbloader, the signature, it is a raw read
@ 0 on SPI,,,, @(64*512) on emmc, then SD
If you check every idbloader you have, the first 5 bytes are always the same, this is the signature
3b 8c dc fc be ,,,,,(idbloader activates memory on mb)
Then, when it has enough memory, uboot is loaded from the same media
