Replace POSIX-UEFI with Nyu-EFI

Author: mintsuki

.gitignore

@@ -1,57 +1,11 @@
-# Prerequisites
-*.d
-
-# Object files
-*.o
-*.ko
-*.obj
-*.elf
-
-# Linker output
-*.ilk
-*.map
-*.exp
-
-# Precompiled Headers
-*.gch
-*.pch
-
-# Libraries
-*.lib
-*.a
-*.la
-*.lo
-
-# Shared objects (inc. Windows DLLs)
-*.dll
-*.so
-*.so.*
-*.dylib
-
-# Executables
-*.exe
-*.out
-*.app
-*.i*86
-*.x86_64
-*.hex
-
-# Debug files
-*.dSYM/
-*.su
-*.idb
-*.pdb
-
-# Kernel Module Compile Results
-*.mod*
-*.cmd
-.tmp_versions/
-modules.order
-Module.symvers
-Mkfile.old
-dkms.conf
-
-# EFI Stuff
-*.efi
-*.log
-NvVars
+/compile_commands.json
+/.cache
+/boot
+/freestnd-c-hdrs
+/src/cc-runtime
+/src/nanoprintf_orig.h
+/src/nanoprintf.h
+/nyu-efi
+/ovmf
+/bin-*
+/obj-*

.gitmodules

@@ -0,0 +1,295 @@
+# Nuke built-in rules and variables.
+MAKEFLAGS += -rR
+.SUFFIXES:
+
+# This is the name that our final executable will have.
+# Change as needed.
+override OUTPUT := csmwrap
+
+# Target architecture to build for. Default to x86_64.
+ARCH := x86_64
+
+# Check if the architecture is supported.
+ifeq ($(filter $(ARCH),aarch64 loongarch64 riscv64 x86_64),)
+    $(error Architecture $(ARCH) not supported)
+endif
+
+# Default user QEMU flags. These are appended to the QEMU command calls.
+QEMUFLAGS := -m 2G
+
+# User controllable C compiler command.
+CC := cc
+
+# User controllable objcopy command.
+OBJCOPY := objcopy
+
+# User controllable C flags.
+CFLAGS := -g -O2 -pipe
+
+# User controllable C preprocessor flags. We set none by default.
+CPPFLAGS :=
+
+ifeq ($(ARCH),x86_64)
+    # User controllable nasm flags.
+    NASMFLAGS := -F dwarf -g
+endif
+
+# User controllable linker flags. We set none by default.
+LDFLAGS :=
+
+# Ensure the dependencies have been obtained.
+ifeq ($(shell ( ! test -d freestnd-c-hdrs || ! test -d src/cc-runtime || ! test -d nyu-efi ); echo $$?),0)
+    $(error Please run the ./get-deps script first)
+endif
+
+# Check if CC is Clang.
+override CC_IS_CLANG := $(shell ! $(CC) --version 2>/dev/null | grep 'clang' >/dev/null 2>&1; echo $$?)
+
+# Save user CFLAGS and CPPFLAGS before we append internal flags.
+override USER_CFLAGS := $(CFLAGS)
+override USER_CPPFLAGS := $(CPPFLAGS)
+
+# Internal C flags that should not be changed by the user.
+override CFLAGS += \
+    -Wall \
+    -Wextra \
+    -std=gnu11 \
+    -nostdinc \
+    -ffreestanding \
+    -fno-stack-protector \
+    -fno-stack-check \
+    -fshort-wchar \
+    -fPIE \
+    -ffunction-sections \
+    -fdata-sections
+
+# Internal C preprocessor flags that should not be changed by the user.
+override CPPFLAGS := \
+    -I src \
+    -I nyu-efi/inc \
+    -isystem freestnd-c-hdrs \
+    $(CPPFLAGS) \
+    -MMD \
+    -MP
+
+ifeq ($(ARCH),x86_64)
+    # Internal nasm flags that should not be changed by the user.
+    override NASMFLAGS += \
+        -Wall
+endif
+
+# Architecture specific internal flags.
+ifeq ($(ARCH),x86_64)
+    ifeq ($(CC_IS_CLANG),1)
+        override CC += \
+            -target x86_64-unknown-none
+    endif
+    override CFLAGS += \
+        -m64 \
+        -march=x86-64 \
+        -mno-80387 \
+        -mno-mmx \
+        -mno-sse \
+        -mno-sse2 \
+        -mno-red-zone
+    override LDFLAGS += \
+        -Wl,-m,elf_x86_64
+    override NASMFLAGS += \
+        -f elf64
+endif
+ifeq ($(ARCH),aarch64)
+    ifeq ($(CC_IS_CLANG),1)
+        override CC += \
+            -target aarch64-unknown-none
+    endif
+    override CFLAGS += \
+        -mgeneral-regs-only
+    override LDFLAGS += \
+        -Wl,-m,aarch64elf
+endif
+ifeq ($(ARCH),riscv64)
+    ifeq ($(CC_IS_CLANG),1)
+        override CC += \
+            -target riscv64-unknown-none
+        override CFLAGS += \
+            -march=rv64imac
+    else
+        override CFLAGS += \
+            -march=rv64imac_zicsr_zifencei
+    endif
+    override CFLAGS += \
+        -mabi=lp64 \
+        -mno-relax
+    override LDFLAGS += \
+        -Wl,-m,elf64lriscv \
+        -Wl,--no-relax
+endif
+ifeq ($(ARCH),loongarch64)
+    ifeq ($(CC_IS_CLANG),1)
+        override CC += \
+            -target loongarch64-unknown-none
+    endif
+    override CFLAGS += \
+        -march=loongarch64 \
+        -mabi=lp64s
+    override LDFLAGS += \
+        -Wl,-m,elf64loongarch \
+        -Wl,--no-relax
+endif
+
+# Internal linker flags that should not be changed by the user.
+override LDFLAGS += \
+    -Wl,--build-id=none \
+    -nostdlib \
+    -pie \
+    -z text \
+    -z max-page-size=0x1000 \
+    -Wl,--gc-sections \
+    -T nyu-efi/src/elf_$(ARCH)_efi.lds
+
+# Use "find" to glob all *.c, *.S, and *.asm files in the tree and obtain the
+# object and header dependency file names.
+override SRCFILES := $(shell cd src && find -L * -type f | LC_ALL=C sort)
+override CFILES := $(filter %.c,$(SRCFILES))
+override ASFILES := $(filter %.S,$(SRCFILES))
+ifeq ($(ARCH),x86_64)
+override NASMFILES := $(filter %.asm,$(SRCFILES))
+endif
+override OBJ := $(addprefix obj-$(ARCH)/,$(CFILES:.c=.c.o) $(ASFILES:.S=.S.o))
+ifeq ($(ARCH),x86_64)
+override OBJ += $(addprefix obj-$(ARCH)/,$(NASMFILES:.asm=.asm.o))
+endif
+override HEADER_DEPS := $(addprefix obj-$(ARCH)/,$(CFILES:.c=.c.d) $(ASFILES:.S=.S.d))
+
+# Default target. This must come first, before header dependencies.
+.PHONY: all
+all: bin-$(ARCH)/$(OUTPUT).efi
+
+# Include header dependencies.
+-include $(HEADER_DEPS)
+
+# Rules to build the nyu-efi objects we need.
+nyu-efi/src/crt0-efi-$(ARCH).S.o: nyu-efi
+
+nyu-efi/src/reloc_$(ARCH).c.o: nyu-efi
+
+.PHONY: nyu-efi
+nyu-efi:
+	$(MAKE) -C nyu-efi/src -f nyu-efi.mk \
+		ARCH="$(ARCH)" \
+		CC="$(CC)" \
+		CFLAGS="$(USER_CFLAGS) -nostdinc" \
+		CPPFLAGS="$(USER_CPPFLAGS) -isystem ../../freestnd-c-hdrs"
+
+# Rule to convert the final ELF executable to a .EFI PE executable.
+bin-$(ARCH)/$(OUTPUT).efi: bin-$(ARCH)/$(OUTPUT) GNUmakefile
+	mkdir -p "$$(dirname $@)"
+	$(OBJCOPY) -O binary $< $@
+	dd if=/dev/zero of=$@ bs=4096 count=0 seek=$$(( ($$(wc -c < $@) + 4095) / 4096 )) 2>/dev/null
+
+# Link rules for the final executable.
+bin-$(ARCH)/$(OUTPUT): GNUmakefile nyu-efi/src/elf_$(ARCH)_efi.lds nyu-efi/src/crt0-efi-$(ARCH).S.o nyu-efi/src/reloc_$(ARCH).c.o $(OBJ)
+	mkdir -p "$$(dirname $@)"
+	$(CC) $(CFLAGS) $(LDFLAGS) nyu-efi/src/crt0-efi-$(ARCH).S.o nyu-efi/src/reloc_$(ARCH).c.o $(OBJ) -o $@
+
+# Compilation rules for *.c files.
+obj-$(ARCH)/%.c.o: src/%.c GNUmakefile
+	mkdir -p "$$(dirname $@)"
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
+
+# Compilation rules for *.S files.
+obj-$(ARCH)/%.S.o: src/%.S GNUmakefile
+	mkdir -p "$$(dirname $@)"
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
+
+ifeq ($(ARCH),x86_64)
+# Compilation rules for *.asm (nasm) files.
+obj-$(ARCH)/%.asm.o: src/%.asm GNUmakefile
+	mkdir -p "$$(dirname $@)"
+	nasm $(NASMFLAGS) $< -o $@
+endif
+
+# Rules to download the UEFI firmware per architecture for testing.
+ovmf/ovmf-code-$(ARCH).fd:
+	mkdir -p ovmf
+	curl -Lo $@ https://github.com/osdev0/edk2-ovmf-nightly/releases/latest/download/ovmf-code-$(ARCH).fd
+	case "$(ARCH)" in \
+		aarch64) dd if=/dev/zero of=$@ bs=1 count=0 seek=67108864 2>/dev/null;; \
+		riscv64) dd if=/dev/zero of=$@ bs=1 count=0 seek=33554432 2>/dev/null;; \
+	esac
+
+ovmf/ovmf-vars-$(ARCH).fd:
+	mkdir -p ovmf
+	curl -Lo $@ https://github.com/osdev0/edk2-ovmf-nightly/releases/latest/download/ovmf-vars-$(ARCH).fd
+	case "$(ARCH)" in \
+		aarch64) dd if=/dev/zero of=$@ bs=1 count=0 seek=67108864 2>/dev/null;; \
+		riscv64) dd if=/dev/zero of=$@ bs=1 count=0 seek=33554432 2>/dev/null;; \
+	esac
+
+# Rules for running our executable in QEMU.
+.PHONY: run
+run: all ovmf/ovmf-code-$(ARCH).fd ovmf/ovmf-vars-$(ARCH).fd
+	mkdir -p boot/EFI/BOOT
+ifeq ($(ARCH),x86_64)
+	cp bin-$(ARCH)/$(OUTPUT).efi boot/EFI/BOOT/BOOTX64.EFI
+	qemu-system-$(ARCH) \
+		-M q35 \
+		-drive if=pflash,unit=0,format=raw,file=ovmf/ovmf-code-$(ARCH).fd,readonly=on \
+		-drive if=pflash,unit=1,format=raw,file=ovmf/ovmf-vars-$(ARCH).fd \
+		-drive file=fat:rw:boot \
+		$(QEMUFLAGS)
+endif
+ifeq ($(ARCH),aarch64)
+	cp bin-$(ARCH)/$(OUTPUT).efi boot/EFI/BOOT/BOOTAA64.EFI
+	qemu-system-$(ARCH) \
+		-M virt \
+		-cpu cortex-a72 \
+		-device ramfb \
+		-device qemu-xhci \
+		-device usb-kbd \
+		-device usb-mouse \
+		-drive if=pflash,unit=0,format=raw,file=ovmf/ovmf-code-$(ARCH).fd,readonly=on \
+		-drive if=pflash,unit=1,format=raw,file=ovmf/ovmf-vars-$(ARCH).fd \
+		-drive file=fat:rw:boot \
+		$(QEMUFLAGS)
+endif
+ifeq ($(ARCH),riscv64)
+	cp bin-$(ARCH)/$(OUTPUT).efi boot/EFI/BOOT/BOOTRISCV64.EFI
+	qemu-system-$(ARCH) \
+		-M virt \
+		-cpu rv64 \
+		-device ramfb \
+		-device qemu-xhci \
+		-device usb-kbd \
+		-device usb-mouse \
+		-drive if=pflash,unit=0,format=raw,file=ovmf/ovmf-code-$(ARCH).fd,readonly=on \
+		-drive if=pflash,unit=1,format=raw,file=ovmf/ovmf-vars-$(ARCH).fd \
+		-drive file=fat:rw:boot \
+		$(QEMUFLAGS)
+endif
+ifeq ($(ARCH),loongarch64)
+	cp bin-$(ARCH)/$(OUTPUT).efi boot/EFI/BOOT/BOOTLOONGARCH64.EFI
+	qemu-system-$(ARCH) \
+		-M virt \
+		-cpu la464 \
+		-device ramfb \
+		-device qemu-xhci \
+		-device usb-kbd \
+		-device usb-mouse \
+		-drive if=pflash,unit=0,format=raw,file=ovmf/ovmf-code-$(ARCH).fd,readonly=on \
+		-drive if=pflash,unit=1,format=raw,file=ovmf/ovmf-vars-$(ARCH).fd \
+		-drive file=fat:rw:boot \
+		$(QEMUFLAGS)
+endif
+	rm -rf boot
+
+# Remove object files and the final executable.
+.PHONY: clean
+clean:
+	$(MAKE) -C nyu-efi/src -f nyu-efi.mk ARCH="$(ARCH)" clean
+	rm -rf bin-$(ARCH) obj-$(ARCH)
+
+# Remove everything built and generated including downloaded dependencies.
+.PHONY: distclean
+distclean:
+	rm -rf bin-* obj-* freestnd-c-hdrs src/cc-runtime nyu-efi ovmf