U-boot - difference between u-boot-spl-sc589-mini.elf and stage1-boot.ldr

Hi, so what was before on the sc589-mini spi flash? Different version of yocto?

In this case better to start from the clean spi flash. Load the  u-boot over the spl, and clean the spi flash commands, assume you have 64MBit spi flash
sf probe 2:1
sf erase 0x0 0x4000000

set the default env with
env default -a

Now update the spi with

run update_spi_uboot_only

or with
run update_spi_uboot_stage1
run update_spi_uboot_stage2

this should make board bootable

Also after eases can update whole flash with update_spi, so kernel and rootfs make way to the SPI flash

I have noticed that when I make a change to uboot code, rebuild, then do a diff of u-boot-spl-sc589-mini.elf before and after the build, I get a different binary. So I have confidence that the changes are appropriately compiled. However when I do a diff of stage1-boot-ldr, which is just u-boot-spl-sc589-mini.ldr renamed, before and after the rebuild, I have the exact same binary. So I think bitbake isn't rebuilding the LDR file, only the ELF file. I don't know why but I think that's what's happening.

yes, try to clean the u-boot-adi with "-c cleanall", my usual steps in this case are:
bitbake u-boot-adi -c cleanall

bitbake adsp-boot -c cleanall

bitbake u-boot-adi -f 

bitbake adsp-boot -f

all stage1 and stage2 ldr files should be regenerated

That looks like it did a clean build but my board still doesn't boot.

Is it the case that stage1-boot.ldr is just a release build of uboot and u-boot-spl-sc589-mini.elf  is a debug build ? Or are there other differences ? cheers

That looks like it did a clean build but my board still doesn't boot.

Is it the case that stage1-boot.ldr is just a release build of uboot and u-boot-spl-sc589-mini.elf  is a debug build ? Or are there other differences ? cheers