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From: Atish Patra <atish.patra@wdc.com>
To: linux-kernel@vger.kernel.org
Cc: Atish Patra <atish.patra@wdc.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	linux-efi@vger.kernel.org, linux-riscv@lists.infradead.org,
	Masahiro Yamada <masahiroy@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Heinrich Schuchardt <xypron.glpk@gmx.de>,
	linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 00/11] Add UEFI support for RISC-V
Date: Thu, 25 Jun 2020 16:45:05 -0700
Message-ID: <20200625234516.31406-1-atish.patra@wdc.com> (raw)

This series adds UEFI support for RISC-V.

Linux kernel: 5.8-rc2
U-Boot: master
OpenSBI: master

Patch 1-6 are preparatory patches that fixes some of the geric efi and riscv issues.

Patch 7-9 adds the efi stub support for RISC-V which was reviewed few months back.
http://lists.infradead.org/pipermail/linux-riscv/2020-April/009586.html

Patch 10 just renames arm-init code so that it can be used across different
architectures. Patch 11 adds the runtime services for RISC-V.

The patches can also be found in following git repo.
https://github.com/atishp04/linux/tree/uefi_riscv_5.9_v1

The patches have been verified on Qemu using bootefi command in U-Boot for both
RV32 and RV64.

For RV32, maximum allocated memory should be 1G as RISC-V kernel can not map
beyond 1G of physical memory for RV32.

EDK2 can boot quite far into Linux with current series. Currently, we are seeing
some traps from drivers (spi/network). At first glance, they don't seem to be
caused by efi. I thought it is better to get some early feedback on the series
while EDK2 issue is being debugged.

That's why uefi runtime services are not actually well tested in RISC-V.
Any suggestions to test the efi run time services are appreciated. 

Changes from previous version:
1. Added full ioremap support. 
2. Added efi runtime services support. 
3. Fixes mm issues

Anup Patel (1):
RISC-V: Move DT mapping outof fixmap

Atish Patra (10):
efi: Fix gcc error around __umoddi3 for 32 bit builds
RISC-V: Setup exception vector early
RISC-V: Add early ioremap support
RISC-V: Set maximum number of mapped pages correctly
riscv: Parse all memory blocks to remove unusable memory
include: pe.h: Add RISC-V related PE definition
RISC-V: Add PE/COFF header for EFI stub
RISC-V: Add EFI stub support.
efi: Rename arm-init to efi-init common for all arch
RISC-V: Add EFI runtime services

arch/riscv/Kconfig                            |  25 ++++
arch/riscv/Makefile                           |   1 +
arch/riscv/configs/defconfig                  |   1 +
arch/riscv/include/asm/Kbuild                 |   1 +
arch/riscv/include/asm/efi.h                  |  56 +++++++
arch/riscv/include/asm/fixmap.h               |  16 +-
arch/riscv/include/asm/io.h                   |   1 +
arch/riscv/include/asm/mmu.h                  |   2 +
arch/riscv/include/asm/pgalloc.h              |  12 ++
arch/riscv/include/asm/pgtable.h              |   4 +
arch/riscv/include/asm/sections.h             |  13 ++
arch/riscv/kernel/Makefile                    |   5 +
arch/riscv/kernel/efi-header.S                | 104 +++++++++++++
arch/riscv/kernel/efi.c                       | 106 +++++++++++++
arch/riscv/kernel/head.S                      |  27 +++-
arch/riscv/kernel/head.h                      |   2 -
arch/riscv/kernel/image-vars.h                |  51 +++++++
arch/riscv/kernel/setup.c                     |  16 +-
arch/riscv/kernel/smpboot.c                   |   1 -
arch/riscv/kernel/traps.c                     |   8 +-
arch/riscv/kernel/vmlinux.lds.S               |  22 ++-
arch/riscv/mm/init.c                          | 104 ++++++++-----
drivers/firmware/efi/Kconfig                  |   3 +-
drivers/firmware/efi/Makefile                 |   4 +-
.../firmware/efi/{arm-init.c => efi-init.c}   |   0
drivers/firmware/efi/libstub/Makefile         |  10 ++
drivers/firmware/efi/libstub/alignedmem.c     |   2 +-
drivers/firmware/efi/libstub/efi-stub.c       |  11 +-
drivers/firmware/efi/libstub/riscv-stub.c     | 110 ++++++++++++++
drivers/firmware/efi/riscv-runtime.c          | 141 ++++++++++++++++++
include/linux/pe.h                            |   3 +
31 files changed, 796 insertions(+), 66 deletions(-)
create mode 100644 arch/riscv/include/asm/efi.h
create mode 100644 arch/riscv/include/asm/sections.h
create mode 100644 arch/riscv/kernel/efi-header.S
create mode 100644 arch/riscv/kernel/efi.c
create mode 100644 arch/riscv/kernel/image-vars.h
rename drivers/firmware/efi/{arm-init.c => efi-init.c} (100%)
create mode 100644 drivers/firmware/efi/libstub/riscv-stub.c
create mode 100644 drivers/firmware/efi/riscv-runtime.c

--
2.24.0


             reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-25 23:45 Atish Patra [this message]
2020-06-25 23:45 ` [RFC PATCH 01/11] efi: Fix gcc error around __umoddi3 for 32 bit builds Atish Patra
2020-06-26  2:42   ` Heinrich Schuchardt
2020-06-26 21:56     ` Atish Patra
2020-06-26 22:03       ` Ard Biesheuvel
2020-06-27  9:22         ` Ard Biesheuvel
2020-06-29 20:09           ` Atish Patra
2020-06-25 23:45 ` [RFC PATCH 02/11] RISC-V: Move DT mapping outof fixmap Atish Patra
2020-06-25 23:45 ` [RFC PATCH 03/11] RISC-V: Setup exception vector early Atish Patra
2020-06-25 23:45 ` [RFC PATCH 04/11] RISC-V: Add early ioremap support Atish Patra
2020-06-25 23:45 ` [RFC PATCH 05/11] RISC-V: Set maximum number of mapped pages correctly Atish Patra
2020-06-25 23:45 ` [RFC PATCH 06/11] riscv: Parse all memory blocks to remove unusable memory Atish Patra
2020-06-25 23:45 ` [RFC PATCH 07/11] include: pe.h: Add RISC-V related PE definition Atish Patra
2020-06-25 23:45 ` [RFC PATCH 08/11] RISC-V: Add PE/COFF header for EFI stub Atish Patra
2020-06-25 23:45 ` [RFC PATCH 09/11] RISC-V: Add EFI stub support Atish Patra
2020-06-25 23:45 ` [RFC PATCH 10/11] efi: Rename arm-init to efi-init common for all arch Atish Patra
2020-06-26  3:00   ` Heinrich Schuchardt
2020-06-26 21:57     ` Atish Patra
2020-06-25 23:45 ` [RFC PATCH 11/11] RISC-V: Add EFI runtime services Atish Patra

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