Atish Patra <atish.patra@xxxxxxx> writes: > Currently, last stage boot loaders such as U-Boot can accept only > uImage which is an unnecessary additional step in automating boot flows. > > Add a PE/COFF compliant image header that boot loaders can parse and > directly load kernel flat Image. The existing booting methods will continue > to work as it is. > > Another goal of this header is to support EFI stub for RISC-V in future. > EFI specification needs PE/COFF image header in the beginning of the kernel > image in order to load it as an EFI application. In order to support > EFI stub, code0 should be replaced with "MZ" magic string and res5(at > offset 0x3c) should point to the rest of the PE/COFF header (which will > be added during EFI support). > > This patch is based on ARM64 boot image header and provides an opprtunity > to combine both ARM64 & RISC-V image headers. > > Tested on both QEMU and HiFive Unleashed using OpenSBI + U-Boot + Linux. > > Signed-off-by: Atish Patra <atish.patra@xxxxxxx> Tested booti support on HiFive Unleashed using OpenSBI + U-Boot (master branch) + Linux. Tested-by: Kevin Hilman <khilman@xxxxxxxxxxxx>
