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#
# Copyright (c) 2018-2024, Arm Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
ifeq ($(filter-out clean,$(or $(MAKECMDGOALS),all)),)
toolchains :=
else
toolchains := aarch64
endif
include ../../make_helpers/build-rules.mk
include ../../make_helpers/common.mk
include ../../make_helpers/toolchain.mk
ROMLIB_GEN = ./romlib_generator.py
BUILD_DIR = $(BUILD_PLAT)/romlib
LIB_DIR = $(BUILD_PLAT)/lib
WRAPPER_DIR = $(BUILD_PLAT)/libwrapper
LIBS = -lmbedtls -lfdt -lc
INC = $(INCLUDES:-I%=-I../../%)
PPFLAGS = $(INC) $(DEFINES) -P -x assembler-with-cpp -D__LINKER__ -MD -MP -MT $(BUILD_DIR)/romlib.ld
OBJS = $(BUILD_DIR)/jmptbl.o $(BUILD_DIR)/init.o
MAPFILE = $(BUILD_PLAT)/romlib/romlib.map
ifneq ($(PLAT_DIR),)
WRAPPER_SOURCES = $(sort $(shell $(ROMLIB_GEN) genwrappers -b $\
$(WRAPPER_DIR) --list ../../$(PLAT_DIR)/jmptbl.i))
WRAPPER_OBJS = $(WRAPPER_SOURCES:.s=.o)
endif
LDFLAGS := -Wl,--gc-sections -nostdlib
ifeq ($(DEBUG),1)
LDFLAGS += -Wl,-Map=$(MAPFILE)
endif
ifeq (${ARM_ARCH_MINOR},0)
ASFLAGS = -march=armv8-a
else
ASFLAGS = -march=armv8.${ARM_ARCH_MINOR}-a
endif
.PHONY: all clean distclean
all: $(BUILD_DIR)/romlib.bin $(LIB_DIR)/libwrappers.a
%.o: %.s | $$(@D)/
$(s)echo " AS $@"
$(q)$(aarch64-as) -c $(ASFLAGS) -o $@ $<
$(BUILD_DIR)/%.o: %.s | $$(@D)/
$(s)echo " AS $@"
$(q)$(aarch64-as) -c $(ASFLAGS) -o $@ $<
$(BUILD_DIR)/romlib.ld: romlib.ld.S | $$(@D)/
$(s)echo " PP $@"
$(q)$(aarch64-cpp) -E $(PPFLAGS) -o $@ romlib.ld.S
$(BUILD_DIR)/romlib.elf: $(OBJS) $(BUILD_DIR)/romlib.ld | $$(@D)/
$(s)echo " LD $@"
$(q)$(aarch64-ld) -T $(BUILD_DIR)/romlib.ld -L$(LIB_DIR) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
$(BUILD_DIR)/romlib.bin: $(BUILD_DIR)/romlib.elf | $$(@D)/
$(s)echo " BIN $@"
$(q)$(aarch64-oc) -O binary $(BUILD_DIR)/romlib.elf $@
$(WRAPPER_DIR)/jmpvar.s: $(BUILD_DIR)/romlib.elf | $$(@D)/
$(s)echo " VAR $@"
$(q)$(ROMLIB_GEN) genvar --output $@ $<
$(LIB_DIR)/libwrappers.a: $(WRAPPER_DIR)/jmpvar.o $(WRAPPER_OBJS) | $$(@D)/
$(s)echo " AR $@"
$(q)$(aarch64-ar) -rc $@ $(WRAPPER_DIR)/jmpvar.o $(WRAPPER_OBJS)
$(BUILD_DIR)/jmptbl.i: ../../$(PLAT_DIR)/jmptbl.i | $$(@D)/
$(s)echo " PRE $@"
$(q)$(ROMLIB_GEN) pre --output $@ --deps $(BUILD_DIR)/jmptbl.d $<
$(WRAPPER_SOURCES) &: $(BUILD_DIR)/jmptbl.i | $$(@D)/
$(s)echo " WRP $<"
$(q)$(ROMLIB_GEN) genwrappers --bti=$(ENABLE_BTI) -b $(WRAPPER_DIR) $<
$(WRAPPER_OBJS): $(WRAPPER_DIR)/%.o: $(WRAPPER_DIR)/%.s | $$(@D)/
$(BUILD_DIR)/jmptbl.s: $(BUILD_DIR)/jmptbl.i | $$(@D)/
$(s)echo " TBL $@"
$(q)$(ROMLIB_GEN) gentbl --output $@ --bti=$(ENABLE_BTI) $<
clean:
$(q)rm -f $(BUILD_DIR)/*
-include $(BUILD_DIR)/romlib.d
-include $(BUILD_DIR)/jmptbl.d