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

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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>
This commit is contained in:
Michael Brown
2024-09-15 10:54:04 +01:00
parent 68db9a3cb3
commit c215048dda
42 changed files with 2405 additions and 0 deletions
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4
src/config/defaults/efi.h
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@@ -71,4 +71,8 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#define IOAPI_LOONG64
#endif
#if defined ( __riscv )
#define IOAPI_RISCV
#endif
#endif /* CONFIG_DEFAULTS_EFI_H */