Jan Kiszka <[email protected]> writes: Hello Jan,
> On 20.01.26 14:36, Javier Martinez Canillas wrote: >> The EFI_PARTITION_INFO_PROTOCOL provides detailed information about >> partitions. The UEFI specification mentions that both GPT and MBR >> partition schemes are supported, but the U-Boot implementation only >> supports the former. >> >> This can cause compatibility issues for platforms whose boot ROM only >> supports MBR. This change adds support for MBR partition tables to >> the protocol, making U-Boot compatible with systems that require a >> legacy MBR table. > > Normally, this is simple to address via hybrid partition tables. I've > done that already for two different SoCs (TI AM62 and Altera Cyclone V), > and this allows to use all the nifty features of the modern GPT without > upsetting the ROM loaders. Do you have a SoC where this does not work? > Yes, I know that could be worked around by using hybrid partition tables but IMO using that could be fragile. > That said, adding this feature may still be valuable. > Indeed and as mentioned in the commit message it is something supported by the EFI partition info protocol according to the spec, so it makes sense for U-boot to also implement support for MBR. > Jan > > -- > Siemens AG, Foundational Technologies > Linux Expert Center > -- Best regards, Javier Martinez Canillas Core Platforms Red Hat
