d239adf839
Most of changes were moving around where macros were defined, plus the following: - Remove requirement for floating point on RV64 to support booting monitor core on U54 SoC. - Add support for Debug LEDs on HiFive Unleashed Board
84 lines
2.4 KiB
Makefile
84 lines
2.4 KiB
Makefile
LOCAL_DIR := $(GET_LOCAL_DIR)
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MODULE := $(LOCAL_DIR)
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MODULE_SRCS += $(LOCAL_DIR)/start.S
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MODULE_SRCS += $(LOCAL_DIR)/arch.c
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MODULE_SRCS += $(LOCAL_DIR)/asm.S
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MODULE_SRCS += $(LOCAL_DIR)/clint.c
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MODULE_SRCS += $(LOCAL_DIR)/exceptions.c
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MODULE_SRCS += $(LOCAL_DIR)/thread.c
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GLOBAL_DEFINES += SMP_MAX_CPUS=1
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GLOBAL_DEFINES += PLATFORM_HAS_DYNAMIC_TIMER=1
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SUBARCH ?= 32
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WITH_LINKER_GC ?= 0
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KERNEL_BASE ?= $(MEMBASE)
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KERNEL_LOAD_OFFSET ?= 0
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ROMBASE ?= 0
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GLOBAL_DEFINES += ROMBASE=$(ROMBASE)
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GLOBAL_DEFINES += MEMBASE=$(MEMBASE)
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GLOBAL_DEFINES += MEMSIZE=$(MEMSIZE)
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# based on 32 or 64 bitness, select the right toolchain and some
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# compiler codegen flags
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ifeq ($(SUBARCH),32)
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ifndef TOOLCHAIN_PREFIX
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TOOLCHAIN_PREFIX := riscv32-elf-
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endif
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ARCH_COMPILEFLAGS := -march=rv32imac -mabi=ilp32
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else ifeq ($(SUBARCH),64)
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ifndef TOOLCHAIN_PREFIX
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TOOLCHAIN_PREFIX := riscv64-elf-
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endif
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ARCH_COMPILEFLAGS := -march=rv64imac -mabi=lp64 -mcmodel=medany
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else
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$(error SUBARCH not set or set to something unknown)
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endif
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# embedded switch sets the default compile optimization and passes
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# a flag to the code to switch other things on
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ifeq (true,$(call TOBOOL,$(ARCH_RISCV_EMBEDDED)))
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ARCH_OPTFLAGS ?= -Os
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GLOBAL_DEFINES += ARCH_RISCV_EMBEDDED=1
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else
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ARCH_OPTFLAGS ?= -O2
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endif
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LIBGCC := $(shell $(TOOLCHAIN_PREFIX)gcc $(GLOBAL_COMPILEFLAGS) $(ARCH_COMPILEFLAGS) $(GLOBAL_CFLAGS) -print-libgcc-file-name)
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$(info LIBGCC = $(LIBGCC))
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# potentially generated files that should be cleaned out with clean make rule
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GENERATED += \
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$(BUILDDIR)/linker-onesegment.ld \
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$(BUILDDIR)/linker-twosegment.ld
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# rules for generating the linker script
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$(BUILDDIR)/linker-%.ld: $(LOCAL_DIR)/linker-%.ld $(wildcard arch/*.ld) linkerscript.phony
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@echo generating $@
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@$(MKDIR)
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$(NOECHO)sed "s/%BITS%/$(SUBARCH)/g;s/%ROMBASE%/$(ROMBASE)/;s/%MEMBASE%/$(MEMBASE)/;s/%MEMSIZE%/$(MEMSIZE)/;s/%KERNEL_BASE%/$(KERNEL_BASE)/;s/%KERNEL_LOAD_OFFSET%/$(KERNEL_LOAD_OFFSET)/;s/%VECTOR_BASE_PHYS%/$(VECTOR_BASE_PHYS)/" < $< > $@.tmp
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@$(call TESTANDREPLACEFILE,$@.tmp,$@)
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linkerscript.phony:
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.PHONY: linkerscript.phony
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# select the appropriate linker script based on if we're a one or two segment system
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ifeq (true,$(call TOBOOL,$(ARCH_RISCV_TWOSEGMENT)))
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GLOBAL_DEFINES += ARCH_RISCV_TWOSEGMENT=1
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LINKER_SCRIPT += $(BUILDDIR)/linker-twosegment.ld
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else
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GLOBAL_DEFINES += ARCH_RISCV_TWOSEGMENT=0
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LINKER_SCRIPT += $(BUILDDIR)/linker-onesegment.ld
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endif
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include make/module.mk
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