This series adds UEFI support for RISC-V. Linux kernel: master(00e4db51259a) 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_v5 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 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 | 17 +- 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, 900 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 -- 2.24.0
