| ROOT_DIR := $(dir $(lastword $(MAKEFILE_LIST))) |
| ifeq ($(ROOT_DIR),./) |
| ROOT_DIR := |
| endif |
| |
| # |
| # Defaults. |
| # |
| ARCH ?= aarch64 |
| PLAT ?= qemu |
| DEBUG ?= 1 |
| NAME := hafnium |
| |
| # Toolchain |
| CROSS_COMPILE ?= aarch64-linux-gnu- |
| |
| ifeq ($(CLANG),1) |
| CLANG := clang |
| endif |
| GCC ?= gcc |
| |
| ifdef CLANG |
| CC := $(CLANG) -target $(patsubst %-,%,$(CROSS_COMPILE)) |
| else |
| CC := $(CROSS_COMPILE)$(GCC) |
| endif |
| |
| # Output |
| OUT := $(ROOT_DIR)out/$(ARCH)/$(PLAT) |
| |
| all: $(OUT)/$(NAME).bin |
| |
| # Include platform-specific constants. |
| include $(ROOT_DIR)src/arch/$(ARCH)/$(PLAT).mk |
| |
| define include_module |
| SRCS := |
| OFFSET_SRCS := |
| include $(ROOT_DIR)$(1)/rules.mk |
| GLOBAL_SRCS += $$(addprefix $(1)/,$$(SRCS)) |
| GLOBAL_OFFSET_SRCS += $$(addprefix $(1)/,$$(OFFSET_SRCS)) |
| endef |
| |
| # |
| # Include each module. |
| # |
| MODULES := src |
| MODULES += src/arch/$(ARCH) |
| GLOBAL_SRCS := |
| GLOBAL_OFFSET_SRCS := |
| $(foreach mod,$(MODULES),$(eval $(call include_module,$(mod)))) |
| |
| # |
| # Rules to build C files. |
| # |
| COPTS = -mcpu=cortex-a57+nofp |
| COPTS += -fno-stack-protector |
| COPTS += -fno-builtin -ffreestanding |
| COPTS += -g |
| COPTS += -O2 |
| COPTS += -fpic |
| COPTS += -std=c11 |
| COPTS += -Wall -Wpedantic -Werror |
| COPTS += -Wno-extended-offsetof |
| COPTS += -DDEBUG=$(DEBUG) |
| COPTS += -MMD -MP -MF $$(patsubst %,%.d,$$@) |
| COPTS += -DMAX_CPUS=8 |
| COPTS += -DMAX_VMS=16 |
| COPTS += -DSTACK_SIZE=4096 |
| COPTS += -I$(ROOT_DIR)inc |
| COPTS += -I$(ROOT_DIR)src/arch/$(ARCH)/inc |
| COPTS += -I$(OUT)/arch/$(ARCH)/inc |
| COPTS += -DGICD_BASE=$(GICD_BASE) |
| COPTS += -DGICC_BASE=$(GICC_BASE) |
| COPTS += -DGICR_BASE=$(GICR_BASE) |
| COPTS += -DTIMER_IRQ=$(TIMER_IRQ) |
| |
| ifeq ($(PL011),1) |
| COPTS += -DPL011_BASE=$(PL011_BASE) |
| endif |
| |
| define build_c |
| TGT := $(patsubst %.c,%.o,$(OUT)/$(patsubst src/%,%,$(1))) |
| GLOBAL_OBJS += $$(TGT) |
| REMAIN_SRCS := $$(filter-out $(1),$$(REMAIN_SRCS)) |
| $$(TGT): $(ROOT_DIR)$(1) | $$(dir $$(TGT)) |
| $$(info CC $(ROOT_DIR)$1) |
| @$(CC) $(COPTS) -c $(ROOT_DIR)$(1) -o $$@ |
| endef |
| |
| # |
| # Rules to generate offsets. |
| # |
| define gen_offsets |
| TMP := $(patsubst src/%,%,$(1)) |
| TMP := $$(dir $$(TMP))inc/$$(notdir $$(TMP)) |
| TGT := $$(patsubst %.c,%.h,$(OUT)/$$(TMP)) |
| GLOBAL_OFFSETS += $$(TGT) |
| $$(TGT): $(ROOT_DIR)$(1) | $$(dir $$(TGT)) |
| $$(info GENOFFSET $(ROOT_DIR)$1) |
| @$(CC) $(COPTS) -MT $$@ -S -c $(ROOT_DIR)$(1) -o - | \ |
| grep ^DEFINE_OFFSET -A1 | \ |
| grep -v ^--$ | \ |
| sed 's/^DEFINE_OFFSET__\([^:]*\):/#define \1 \\/g' | sed 's/\.xword//g' > $$@ |
| endef |
| |
| # |
| # Rules to build S files. |
| # |
| define build_S |
| TGT := $(patsubst %.S,%.o,$(OUT)/$(patsubst src/%,%,$(1))) |
| GLOBAL_OBJS += $$(TGT) |
| REMAIN_SRCS := $$(filter-out $(1),$$(REMAIN_SRCS)) |
| $$(TGT): $(ROOT_DIR)$(1) $(GLOBAL_OFFSETS) | $$(dir $$(TGT)) |
| $$(info AS $(ROOT_DIR)$1) |
| @$(CC) $(COPTS) -c $(ROOT_DIR)$(1) -o $$@ |
| endef |
| |
| # |
| # Generate the build rules for all .c and .S files. |
| # |
| GLOBAL_OBJS := |
| GLOBAL_OFFSETS := |
| REMAIN_SRCS := $(GLOBAL_SRCS) |
| $(foreach file,$(filter %.c,$(GLOBAL_OFFSET_SRCS)),$(eval $(call gen_offsets,$(file)))) |
| $(foreach file,$(filter %.c,$(GLOBAL_SRCS)),$(eval $(call build_c,$(file)))) |
| $(foreach file,$(filter %.S,$(GLOBAL_SRCS)),$(eval $(call build_S,$(file)))) |
| |
| # |
| # Check if there are any source files which we don't know to handle. |
| # |
| ifneq ($(REMAIN_SRCS),) |
| $(error Don't know how to handle $(REMAIN_SRCS)) |
| endif |
| |
| # |
| # Rule to create all output directories. |
| # |
| define create_dir |
| $1: |
| @mkdir -p $1 |
| endef |
| $(foreach name,$(sort $(dir $(GLOBAL_OBJS))),$(eval $(call create_dir,$(name)))) |
| $(foreach name,$(sort $(dir $(GLOBAL_OFFSETS))),$(eval $(call create_dir,$(name)))) |
| |
| # |
| # Rules to build the hypervisor. |
| # |
| $(OUT)/$(NAME): $(GLOBAL_OBJS) $(ROOT_DIR)src/$(NAME).ld |
| $(info LD $(ROOT_DIR)src/$(NAME).ld) |
| @$(CROSS_COMPILE)ld -g -pie $(GLOBAL_OBJS) -T$(ROOT_DIR)src/$(NAME).ld --defsym PREFERRED_LOAD_ADDRESS=$(LOAD_ADDRESS) -o $@ |
| |
| $(OUT)/$(NAME).bin: $(OUT)/$(NAME) |
| $(info OBJCOPY $@) |
| @$(CROSS_COMPILE)objcopy -O binary $< $@ |
| |
| clean: |
| rm -rf $(ROOT_DIR)out |
| |
| format: |
| find $(ROOT_DIR)src/ -name *.c -o -name *.h | xargs clang-format -style file -i |
| find $(ROOT_DIR)inc/ -name *.c -o -name *.h | xargs clang-format -style file -i |
| |
| -include $(patsubst %,%.d,$(GLOBAL_OBJS),$(GLOBAL_OFFSETS)) |