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    SubjectRe: [PATCH v7 0/9] Add UEFI support for RISC-V
    On Wed, 9 Sep 2020 at 04:16, Palmer Dabbelt <palmer@dabbelt.com> wrote:
    >
    > On Fri, 28 Aug 2020 10:20:27 PDT (-0700), Atish Patra wrote:
    > > This series adds UEFI support for RISC-V.
    > >
    > > Linux kernel: v5.9-rc2
    > > U-Boot: v2020.07
    > > OpenSBI: master
    > >
    > > Patch 1-3 are generic riscv feature addition required for UEFI support.
    > > Patch 4-7 adds the efi stub support for RISC-V which was reviewed few months back.
    > > https://www.spinics.net/lists/linux-efi/msg19144.html
    > > Patch 8 just renames arm-init code so that it can be used across different
    > > architectures.
    > > Patch 9 adds the runtime services for RISC-V.
    > >
    > > The working set of patches can also be found in following git repo.
    > > https://github.com/atishp04/linux/tree/uefi_riscv_5.10_v7
    > >
    > > The patches have been verified on following platforms:
    > > 1. Qemu (both RV32 & RV64) for the following bootflow
    > > OpenSBI->U-Boot->Linux
    > > EDK2->Linux
    > > 2. HiFive unleashed using (RV64) for the following bootflow
    > > OpenSBI->U-Boot->Linux
    > > EDK2->Linux
    > >
    > > Thanks Abner & Daniel for all work done for EDK2.
    > > The EDK2 instructions are available here.
    > > https://github.com/JohnAZoidberg/riscv-edk2-docker/
    > >
    > > Note:
    > > 1. Currently, EDK2 RISC-V port doesn't support OVMF package. That's why
    > > EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER should be enabled to load initrd via
    > > commandline until OVMF patches are available.
    > >
    > > 2. For RV32, maximum allocated memory should be 1G as RISC-V kernel can not map
    > > beyond 1G of physical memory for RV32.
    > >
    > > 3. Runtime services have been verified with fwts on EDK2.
    > >
    > > ***********************************************************************
    > > [root@fedora-riscv ~]# fwts uefirtvariable
    > > Running 1 tests, results appended to results.log
    > > Test: UEFI Runtime service variable interface tests.
    > > Test UEFI RT service get variable interface. 1 passed
    > > Test UEFI RT service get next variable name interface. 4 passed
    > > Test UEFI RT service set variable interface. 7 passed, 1 warning
    > > Test UEFI RT service query variable info interface. 1 passed
    > > Test UEFI RT service variable interface stress test. 2 passed
    > > Test UEFI RT service set variable interface stress t.. 4 passed
    > > Test UEFI RT service query variable info interface s.. 1 passed
    > > Test UEFI RT service get variable interface, invalid.. 5 passed
    > > Test UEFI RT variable services supported status. 1 skipped
    > >
    > > Test |Pass |Fail |Abort|Warn |Skip |Info |
    > > uefirtvariable | 25| | | 1| 1| |
    > > Total: | 25| 0| 0| 1| 1| 0|
    > >
    > > ***********************************************************************
    > >
    > > Changes from v6->v7:
    > > 1. Fixed build error reported on linux-next for patch2.
    > >
    > > Changes from v5->v6:
    > > 1. Fixed the static declaration for pt_ops.
    > > 2. Added Reviewed/Acked-by.
    > >
    > > Changes from v4->v5:
    > > 1. Late mappings allocations are now done through function pointers.
    > > 2. EFI run time services are verified using full linux boot and fwts using EDK2.
    > >
    > > Changes from v3->v4:
    > > 1. Used pgd mapping to avoid copying DT to bss.
    > >
    > > Changes from v2->v3:
    > > 1. Fixed few bugs in run time services page table mapping.
    > > 2. Dropped patch 1 as it is already taken into efi-tree.
    > > 3. Sent few generic mmu fixes as a separate series to ease the merge conflicts.
    > >
    > > Changes from v1->v2:
    > > 1. Removed patch 1 as it is already taken into efi-tree.
    > > 2. Fixed compilation issues with patch 9.
    > > 3. Moved few function prototype declaration to header file to keep kbuild happy.
    > >
    > > 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 (8):
    > > RISC-V: Add early ioremap support
    > > RISC-V: Implement late mapping page table allocation functions
    > > 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
    > > RISC-V: Add page table dump support for uefi
    > >
    > > 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/pgtable.h | 5 +
    > > arch/riscv/include/asm/sections.h | 13 ++
    > > arch/riscv/kernel/Makefile | 5 +
    > > arch/riscv/kernel/efi-header.S | 104 ++++++++++
    > > arch/riscv/kernel/efi.c | 105 ++++++++++
    > > arch/riscv/kernel/head.S | 17 +-
    > > arch/riscv/kernel/head.h | 2 -
    > > arch/riscv/kernel/image-vars.h | 51 +++++
    > > arch/riscv/kernel/setup.c | 18 +-
    > > arch/riscv/kernel/vmlinux.lds.S | 22 +-
    > > arch/riscv/mm/init.c | 191 +++++++++++++-----
    > > arch/riscv/mm/ptdump.c | 48 ++++-
    > > 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/efi-stub.c | 11 +-
    > > drivers/firmware/efi/libstub/riscv-stub.c | 110 ++++++++++
    > > drivers/firmware/efi/riscv-runtime.c | 143 +++++++++++++
    > > include/linux/pe.h | 3 +
    > > 28 files changed, 901 insertions(+), 67 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
    >
    > Thanks. I've also got the tag "riscv-for-efi-5.10", which consists of
    >
    > 6bf710098245 ("efi: Rename arm-init to efi-init common for all arch")
    > f7305a30f0ec ("include: pe.h: Add RISC-V related PE definition")
    > d012a7190fc1 ("Linux 5.9-rc2")
    >
    > and is the base of my for-next. The rest of the patches are also on for-next,
    > but quite a bit later.
    >
    > Ard: IIUC that's what you were looking for? Those two as-is definately aren't
    > going to break bisecting, so I think we should be good to start both of our
    > for-next branches there. LMK if you were looking for something else.

    Yeah that looks fine.

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