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amlogic: switch partition_type to msdos

Merged amlogic: switch partition_type to msdos
funderscore/amlogic-mbr into master
Merged Ferass El Hafidi requested to merge funderscore/amlogic-mbr into master
  1. Dec 08, 2024
    • Ferass El Hafidi's avatar
      amlogic: switch partition_type to msdos (MR 5883) · 05d9b256
      Ferass El Hafidi authored and Robert Eckelmann's avatar Robert Eckelmann committed 
      
After commit 8335d050bf24977afefee6612dd347abd555bc53 in pmbootstrap the
partition table now defaults to GPT instead of MBR.  This breaks booting
on Amlogic devices for the following reasons:

 * On set-top boxes: downstream U-Boot most likely does not have GPT
   support
 * On boards where we install mainline U-Boot as BL33 on eMMC/SD: the
   bootROM checks for an `@AML` image header at offset 512 (second LBA),
   which means we are basically stuck on MBR

Some Amlogic boards have U-Boot + the proprietary Amlogic firmware
stages in SPI flash (mainly the Libre Computer boards do), which means
they can use GPT, because the firmware is simply not stored on eMMC/SD.
For that reason I chose not to change the partition table on those.

Signed-off-by: default avatarFerass El Hafidi <funderscore@postmarketos.org>
      Verified
      05d9b256