6c7e6a1796
-Wire up the make plumbing for setting the kernel vm bits -Implement stubbed out arch_mmu routines. -Set up a high mapping in start.S that should be compatible with the mmu code.
97 lines
2.6 KiB
Makefile
97 lines
2.6 KiB
Makefile
LOCAL_DIR := $(GET_LOCAL_DIR)
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MODULE := $(LOCAL_DIR)
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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)/exceptions.c
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MODULE_SRCS += $(LOCAL_DIR)/exceptions_asm.S
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MODULE_SRCS += $(LOCAL_DIR)/mmu.c
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MODULE_SRCS += $(LOCAL_DIR)/start.S
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MODULE_SRCS += $(LOCAL_DIR)/thread.c
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GLOBAL_DEFINES += SMP_MAX_CPUS=1
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# set the default toolchain to microblaze elf and set a #define
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ifndef TOOLCHAIN_PREFIX
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TOOLCHAIN_PREFIX := m68k-elf-
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endif
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# select the cpu based on flags the platform/target passes in
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M68K_CPU ?= 68040 # default to 040
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ifeq ($(M68K_CPU),68000)
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ARCH_COMPILEFLAGS := -mcpu=68000
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else ifeq ($(M68K_CPU),68010)
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ARCH_COMPILEFLAGS := -mcpu=68010
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else ifeq ($(M68K_CPU),68020)
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ARCH_COMPILEFLAGS := -mcpu=68020
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else ifeq ($(M68K_CPU),68030)
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ARCH_COMPILEFLAGS := -mcpu=68030
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M68K_MMU := 68030
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else ifeq ($(M68K_CPU),68040)
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ARCH_COMPILEFLAGS := -mcpu=68040
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M68K_MMU := 68040
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else
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$(error add support for selected cpu $(M68K_CPU))
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endif
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LIBGCC := $(shell $(TOOLCHAIN_PREFIX)gcc $(GLOBAL_COMPILEFLAGS) $(ARCH_COMPILEFLAGS) $(GLOBAL_COMPILEFLAGS) -print-libgcc-file-name)
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$(info LIBGCC = $(LIBGCC))
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cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`"; \
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then echo "$(2)"; else echo "$(3)"; fi ;)
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# default to no mmu
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WITH_MMU ?= 0
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ifeq (true, $(call TOBOOL, $(WITH_MMU)))
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ifeq ($(M68K_MMU),)
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$(error WITH_MMU is set but no M68K_MMU is set)
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endif
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# we have a mmu and want the vmm/pmm
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WITH_KERNEL_VM := 1
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GLOBAL_DEFINES += ARCH_HAS_MMU=1
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GLOBAL_DEFINES += M68K_MMU=$(M68K_MMU)
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# Have the kernel occupy the top 2GB of the address space.
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# This puts the kernel at 0x8000.0000
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GLOBAL_DEFINES += \
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KERNEL_ASPACE_BASE=0x80000000 \
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KERNEL_ASPACE_SIZE=0x80000000
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KERNEL_BASE ?= 0x80000000
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KERNEL_LOAD_OFFSET ?= 0
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else
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KERNEL_BASE ?= $(MEMBASE)
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KERNEL_LOAD_OFFSET ?= 0
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endif
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ARCH_OPTFLAGS := -O2
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GLOBAL_DEFINES += MEMBASE=$(MEMBASE)
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GLOBAL_DEFINES += MEMSIZE=$(MEMSIZE)
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GLOBAL_DEFINES += KERNEL_BASE=$(KERNEL_BASE)
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GLOBAL_DEFINES += KERNEL_LOAD_OFFSET=$(KERNEL_LOAD_OFFSET)
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GLOBAL_DEFINES += M68K_CPU=$(M68K_CPU)
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GLOBAL_DEFINES += M68K_CPU_$(M68K_CPU)=1
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# potentially generated files that should be cleaned out with clean make rule
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GENERATED += \
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$(BUILDDIR)/linker.ld
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# rules for generating the linker
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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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$(NOECHO)sed "s/%MEMBASE%/$(MEMBASE)/;s/%MEMSIZE%/$(MEMSIZE)/;s/%KERNEL_BASE%/$(KERNEL_BASE)/;s/%KERNEL_LOAD_OFFSET%/$(KERNEL_LOAD_OFFSET)/" < $< > $@.tmp
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@$(call TESTANDREPLACEFILE,$@.tmp,$@)
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linkerscript.phony:
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.PHONY: linkerscript.phony
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LINKER_SCRIPT += $(BUILDDIR)/linker.ld
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include make/module.mk
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