EnderIce2 a8ff50541a
build: add initial Bootloader implementation
Signed-off-by: EnderIce2 <enderice2@protonmail.com>
2025-01-23 21:43:03 +02:00

65 lines
1.6 KiB
Makefile

define find-sources
$(shell find ./ -type f -name '$1' $(shell echo $(foreach board,$(filter-out $(BOARD_TYPE),$(AVAILABLE_BOARDS)), -not -path \"./$(board)/*\")) -print0 | xargs -0)
endef
S_SOURCES := $(call find-sources,*.S)
s_SOURCES := $(call find-sources,*.s)
C_SOURCES := $(call find-sources,*.c)
define find-common-sources
$(shell find ../../common -type f -name '$1' -print0 | xargs -0)
endef
C_COMMON_SOURCES := $(call find-common-sources,*.c)
OBJ = $(s_SOURCES:.s=.o) $(S_SOURCES:.S=.o) $(C_SOURCES:.c=.o) $(C_COMMON_SOURCES:.c=.o)
LDFLAGS = -static -nostdlib -nodefaultlibs -nolibc \
-Wl,-static,--no-dynamic-linker,-ztext \
-zmax-page-size=0x1000 \
-Wl,-Map boot.map -fno-pic -fno-pie
CFLAGS := \
$(INCLUDE_DIR) \
-D__kernel__='1' \
-DGIT_COMMIT='"$(GIT_COMMIT)"' \
-DGIT_COMMIT_SHORT='"$(GIT_COMMIT_SHORT)"' \
-fno-pic -fno-pie -fno-builtin -I../../include
CFLAGS += -mcmodel=large
LDFLAGS += -T$(BOARD_TYPE)/linker.ld
ifeq ($(DEBUG), 1)
CFLAGS += -DDEBUG -ggdb3 -O0 -fdiagnostics-color=always
# CFLAGS += -fsanitize=undefined
CFLAGS += -fstack-check -fverbose-asm
LDFLAGS += -ggdb3 -O0
ASFLAGS += -g --gstabs+ --gdwarf-5 -D
endif # DEBUG
default:
$(error Do not run this Makefile directly!)
build: boot.bin
boot.bin: $(OBJ)
$(info Linking $@)
$(CC) $(LDFLAGS) $(OBJ) -o tmp.elf
$(OBJCOPY) tmp.elf -O binary ../../boot.bin
# rm tmp.elf
%.o: %.c $(HEADERS)
$(info Compiling $<)
$(CC) $(CFLAGS) -fstack-protector-all -std=c17 -c $< -o $@
%.o: %.S
$(info Compiling $<)
$(AS) $(ASFLAGS) -c $< -o $@
%.o: %.s
$(info Compiling $<)
$(AS) $(ASFLAGS) -c $< -o $@
clean:
rm -f $(OBJ) boot.map