[Concept,00/15] riscv: Add EFI-application support

Message ID	20260212001410.1919749-1-sjg@u-boot.org
Headers	From: Simon Glass <sjg@u-boot.org> To: U-Boot Concept <concept@u-boot.org> Date: Wed, 11 Feb 2026 17:13:51 -0700 Message-ID: <20260212001410.1919749-1-sjg@u-boot.org> MIME-Version: 1.0 Message-ID-Hash: 7YDFCE5SF5GWCNRWQYF5FK3YSPLSVMMW CC: Heinrich Schuchardt <xypron.glpk@gmx.de>, Simon Glass <simon.glass@canonical.com> Precedence: list Subject: [Concept] [PATCH 00/15] riscv: Add EFI-application support Archived-At: <https://lists.u-boot.org/archives/list/concept@u-boot.org/message/7YDFCE5SF5GWCNRWQYF5FK3YSPLSVMMW/> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit
Series	riscv: Add EFI-application support \| [Concept,00/15] riscv: Add EFI-application support [Concept,01/15] board_f: Skip the FDT relocation when not relocating [Concept,02/15] board_r: Skip set_gd() for RISC-V EFI applications [Concept,03/15] riscv: Disable OF_BOARD_FIXUP for EFI applications [Concept,04/15] riscv: timer: Read timebase frequency from the firmware FDT [Concept,05/15] riscv: Add the EFI table field to arch_global_data [Concept,06/15] riscv: Exclude -static -pie from LDFLAGS for EFI apps [Concept,07/15] riscv: Add EFI application build flags [Concept,08/15] riscv: efi: Exclude PLT relocations from the reloc loop [Concept,09/15] riscv: Add EFI app linker script and build CRT objects [Concept,10/15] riscv: Exclude start.o, mtrap.o, dram.o for EFI apps [Concept,11/15] riscv: Skip prelink-riscv for EFI application builds [Concept,12/15] riscv: Exclude unwanted startup code for EFI app builds [Concept,13/15] efi: client: Build sync_dt for RISC-V EFI applications [Concept,14/15] riscv: Add RISC-V EFI application board and defconfig [Concept,15/15] scripts: build-efi: Add RISC-V architecture support

Message ID

20260212001410.1919749-1-sjg@u-boot.org

Headers

From: Simon Glass <sjg@u-boot.org>
To: U-Boot Concept <concept@u-boot.org>
Date: Wed, 11 Feb 2026 17:13:51 -0700
Message-ID: <20260212001410.1919749-1-sjg@u-boot.org>
MIME-Version: 1.0
Message-ID-Hash: 7YDFCE5SF5GWCNRWQYF5FK3YSPLSVMMW
CC: Heinrich Schuchardt <xypron.glpk@gmx.de>,
 Simon Glass <simon.glass@canonical.com>
Precedence: list
Subject: [Concept] [PATCH 00/15] riscv: Add EFI-application support
Archived-At: 
 <https://lists.u-boot.org/archives/list/concept@u-boot.org/message/7YDFCE5SF5GWCNRWQYF5FK3YSPLSVMMW/>
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Series

riscv: Add EFI-application support |

Message

Simon Glass Feb. 12, 2026, 12:13 a.m. UTC

  From: Simon Glass <simon.glass@canonical.com>

Add support for building and running U-Boot as a 64-bit RISC-V EFI
application on top of UEFI firmware such as EDK2.

This includes build system changes (linker script, build flags, object
exclusions), runtime fixes (FDT relocation skip, global data pointer
handling, OF_BOARD_FIXUP disable), timer support via the firmware FDT,
board files and defconfig

It also provides QEMU integration in the build-efi script so it is easy
to try out.

Tested on QEMU riscv-virt with EDK2 firmware, boots to the U-Boot
prompt.


Simon Glass (15):
  board_f: Skip the FDT relocation when not relocating
  board_r: Skip set_gd() for RISC-V EFI applications
  riscv: Disable OF_BOARD_FIXUP for EFI applications
  riscv: timer: Read timebase frequency from the firmware FDT
  riscv: Add the EFI table field to arch_global_data
  riscv: Exclude -static -pie from LDFLAGS for EFI apps
  riscv: Add EFI application build flags
  riscv: efi: Exclude PLT relocations from the reloc loop
  riscv: Add EFI app linker script and build CRT objects
  riscv: Exclude start.o, mtrap.o, dram.o for EFI apps
  riscv: Skip prelink-riscv for EFI application builds
  riscv: Exclude unwanted startup code for EFI app builds
  efi: client: Build sync_dt for RISC-V EFI applications
  riscv: Add RISC-V EFI application board and defconfig
  scripts: build-efi: Add RISC-V architecture support

 Makefile                                  |   2 +
 arch/riscv/Kconfig                        |  10 +-
 arch/riscv/Makefile                       |   2 +
 arch/riscv/config.mk                      |  19 +++
 arch/riscv/cpu/Makefile                   |   7 +-
 arch/riscv/cpu/generic/Makefile           |   2 +
 arch/riscv/dts/efi-riscv_app.dts          |  49 ++++++++
 arch/riscv/include/asm/global_data.h      |   3 +
 arch/riscv/lib/Makefile                   |   2 +
 arch/riscv/lib/elf_riscv64_efi_app.lds    | 136 ++++++++++++++++++++++
 arch/riscv/lib/reloc_riscv_efi.c          |  12 +-
 board/efi/Kconfig                         |  42 ++++---
 board/efi/efi-riscv_app/Kconfig           |  26 +++++
 board/efi/efi-riscv_app/MAINTAINERS       |   7 ++
 board/efi/efi-riscv_app/Makefile          |   5 +
 board/efi/efi-riscv_app/board.c           |  51 ++++++++
 board/efi/efi-riscv_app/config.mk         |   6 +
 board/efi/efi-riscv_app/efi-riscv_app.env |  12 ++
 common/board_f.c                          |   3 +-
 common/board_r.c                          |   3 +-
 configs/efi-riscv_app64_defconfig         |  55 +++++++++
 drivers/timer/riscv_timer.c               |  13 +++
 include/asm-generic/global_data.h         |   8 ++
 lib/efi_client/Kconfig                    |   6 +-
 lib/efi_client/Makefile                   |   2 +
 lib/efi_client/efi_app.c                  |   3 +
 scripts/build-efi                         |  25 +++-
 scripts/build_helper.py                   |   7 +-
 28 files changed, 490 insertions(+), 28 deletions(-)
 create mode 100644 arch/riscv/dts/efi-riscv_app.dts
 create mode 100644 arch/riscv/lib/elf_riscv64_efi_app.lds
 create mode 100644 board/efi/efi-riscv_app/Kconfig
 create mode 100644 board/efi/efi-riscv_app/MAINTAINERS
 create mode 100644 board/efi/efi-riscv_app/Makefile
 create mode 100644 board/efi/efi-riscv_app/board.c
 create mode 100644 board/efi/efi-riscv_app/config.mk
 create mode 100644 board/efi/efi-riscv_app/efi-riscv_app.env
 create mode 100644 configs/efi-riscv_app64_defconfig