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+--- Thread: Rebuilding the bootloaders (/showthread.php?tid=8279)
Rebuilding the bootloaders - danielt - 11-11-2019
Assuming the v1.1 update from mrfixit writes all of the bootloaders it looks like the bootloaders consist of three binaries: idbloader.img, uboot.img and trust.img (which strings suggests is a version of [Arm] Trusted Firmware-A).
It looks like the source for uboot.img would be uboot.img is https://github.com/mrfixit2001/rockchip-u-boot. Is that right (and is the build process "obvious")?
Additionally is there source (or partial source) available for either of the other components?
Thanks!
RE: Rebuilding the bootloaders - hmuller - 12-08-2019
@danielt
@ayufan and @Mrfixit2001 might have something to add.
I am still learning the arm embedded boot process, but this is probably a good start:
http://opensource.rock-chips.com/wiki_Boot_option
RE: Rebuilding the bootloaders - Arwen - 12-08-2019
@hmuller, thank you, that link clears up a lot.
The @Mrfixit2001 boot sequence seems to require "/boot" to be the first partition. An experiment today making partitions of the binary blobs similar to the below failed;
http://opensource.rock-chips.com/wiki_Partitions
RE: Rebuilding the bootloaders - danielt - 12-09-2019
(12-08-2019, 07:15 PM)Arwen Wrote: @hmuller, thank you, that link clears up a lot.
The @Mrfixit2001 boot sequence seems to require "/boot" to be the first partition. An experiment today making partitions of the binary blobs similar to the below failed;
http://opensource.rock-chips.com/wiki_Partitions
I remember setting LegacyBIOSBoot attribute in the GPT table whilst getting my early SD card experiments to boot... the UART logs from u-boot suggest that I don't need it anymore but it might be worth fiddling with that flag just in case I missed something.