This series adds UEFI support for RISC-V. Linux kernel: 5.8-rc4 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. https://www.spinics.net/lists/linux-efi/msg19144.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_v2 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 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 (10): efi/libstub: Move the function prototypes to header file 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/efi-stub.c | 28 ++-- drivers/firmware/efi/libstub/efistub.h | 16 ++ drivers/firmware/efi/libstub/riscv-stub.c | 110 ++++++++++++++ drivers/firmware/efi/riscv-runtime.c | 141 ++++++++++++++++++ include/linux/pe.h | 3 + 31 files changed, 811 insertions(+), 82 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
