commit c215048ddaac75969c22c018871295a5748a47e8
author Michael Brown <mcb30@ipxe.org> Sun Sep 15 10:54:04 2024 +0100
committer Michael Brown <mcb30@ipxe.org> Sun Sep 15 22:34:10 2024 +0100
tree 1e47dce485579135c16c130778a810aaeb912d9c
parent 68db9a3cb3d73aae83ee4b7a0cbe9c69d7f32482

[riscv] Add support for the RISC-V CPU architecture

Add support for building iPXE as a 64-bit or 32-bit RISC-V binary, for
either UEFI or Linux userspace platforms.  For example:

  # RISC-V 64-bit UEFI
  make CROSS=riscv64-linux-gnu- bin-riscv64-efi/ipxe.efi

  # RISC-V 32-bit UEFI
  make CROSS=riscv64-linux-gnu- bin-riscv32-efi/ipxe.efi

  # RISC-V 64-bit Linux
  make CROSS=riscv64-linux-gnu- bin-riscv64-linux/tests.linux
  qemu-riscv64 -L /usr/riscv64-linux-gnu/sys-root \
               ./bin-riscv64-linux/tests.linux

  # RISC-V 32-bit Linux
  make CROSS=riscv64-linux-gnu- SYSROOT=/usr/riscv32-linux-gnu/sys-root \
       bin-riscv32-linux/tests.linux
  qemu-riscv32 -L /usr/riscv32-linux-gnu/sys-root \
               ./bin-riscv32-linux/tests.linux

Signed-off-by: Michael Brown <mcb30@ipxe.org>