308 lines
7.2 KiB
Makefile
308 lines
7.2 KiB
Makefile
LOCAL_DIR := $(GET_LOCAL_DIR)
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MODULE := $(LOCAL_DIR)
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# can override this in local.mk
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ENABLE_THUMB?=true
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# default to the regular arm subarch
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SUBARCH := arm
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GLOBAL_DEFINES += \
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ARM_CPU_$(ARM_CPU)=1
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# do set some options based on the cpu core
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HANDLED_CORE := false
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ifeq ($(ARM_CPU),cortex-m3)
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GLOBAL_DEFINES += \
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ARM_CPU_CORTEX_M3=1 \
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ARM_ISA_ARMv7=1 \
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ARM_ISA_ARMv7M=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_THUMB2=1
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GLOBAL_COMPILEFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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ENABLE_THUMB := true
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SUBARCH := arm-m
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endif
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ifeq ($(ARM_CPU),cortex-m4)
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GLOBAL_DEFINES += \
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ARM_CPU_CORTEX_M4=1 \
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ARM_ISA_ARMv7=1 \
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ARM_ISA_ARMv7M=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_THUMB2=1
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GLOBAL_COMPILEFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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ENABLE_THUMB := true
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SUBARCH := arm-m
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endif
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ifeq ($(ARM_CPU),cortex-m4f)
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GLOBAL_DEFINES += \
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ARM_CPU_CORTEX_M4=1 \
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ARM_CPU_CORTEX_M4F=1 \
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ARM_ISA_ARMv7=1 \
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ARM_ISA_ARMv7M=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_THUMB2=1 \
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ARM_WITH_VFP=1 \
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__FPU_PRESENT=1
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GLOBAL_COMPILEFLAGS += -mcpu=cortex-m4 -mfloat-abi=softfp
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HANDLED_CORE := true
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ENABLE_THUMB := true
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SUBARCH := arm-m
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endif
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ifeq ($(ARM_CPU),cortex-a7)
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GLOBAL_DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv7=1 \
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ARM_ISA_ARMv7A=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_THUMB2=1 \
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ARM_WITH_CACHE=1
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GLOBAL_COMPILEFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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endif
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ifeq ($(ARM_CPU),cortex-a8)
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GLOBAL_DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv7=1 \
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ARM_ISA_ARMv7A=1 \
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ARM_WITH_VFP=1 \
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ARM_WITH_NEON=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_THUMB2=1 \
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ARM_WITH_CACHE=1 \
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ARM_WITH_L2=1
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GLOBAL_COMPILEFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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GLOBAL_COMPILEFLAGS += -mfpu=neon -mfloat-abi=softfp
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endif
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ifeq ($(ARM_CPU),cortex-a9)
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GLOBAL_DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv7=1 \
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ARM_ISA_ARMv7A=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_THUMB2=1 \
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ARM_WITH_CACHE=1
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GLOBAL_COMPILEFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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endif
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ifeq ($(ARM_CPU),cortex-a9-neon)
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GLOBAL_DEFINES += \
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ARM_CPU_CORTEX_A9=1 \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv7=1 \
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ARM_ISA_ARMv7A=1 \
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ARM_WITH_VFP=1 \
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ARM_WITH_NEON=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_THUMB2=1 \
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ARM_WITH_CACHE=1
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GLOBAL_COMPILEFLAGS += -mcpu=cortex-a9
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HANDLED_CORE := true
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# XXX cannot enable neon right now because compiler generates
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# neon code for 64bit integer ops
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GLOBAL_COMPILEFLAGS += -mfpu=vfpv3 -mfloat-abi=softfp
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endif
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ifeq ($(ARM_CPU),arm1136j-s)
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GLOBAL_DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv6=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_CACHE=1 \
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ARM_CPU_ARM1136=1
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GLOBAL_COMPILEFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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endif
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ifeq ($(ARM_CPU),arm1176jzf-s)
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GLOBAL_DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv6=1 \
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ARM_WITH_VFP=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_CACHE=1 \
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ARM_CPU_ARM1136=1
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GLOBAL_COMPILEFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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endif
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ifneq ($(HANDLED_CORE),true)
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$(error $(LOCAL_DIR)/rules.mk doesnt have logic for arm core $(ARM_CPU))
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endif
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THUMBCFLAGS :=
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THUMBINTERWORK :=
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ifeq ($(ENABLE_THUMB),true)
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THUMBCFLAGS := -mthumb -D__thumb__
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THUMBINTERWORK := -mthumb-interwork
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endif
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GLOBAL_INCLUDES += \
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$(LOCAL_DIR)/include \
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$(LOCAL_DIR)/$(SUBARCH)/include
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ifeq ($(SUBARCH),arm)
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MODULE_SRCS += \
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$(LOCAL_DIR)/arm/start.S \
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$(LOCAL_DIR)/arm/asm.S \
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$(LOCAL_DIR)/arm/cache-ops.S \
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$(LOCAL_DIR)/arm/cache.c \
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$(LOCAL_DIR)/arm/ops.S \
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$(LOCAL_DIR)/arm/exceptions.S \
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$(LOCAL_DIR)/arm/faults.c \
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$(LOCAL_DIR)/arm/fpu.c \
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$(LOCAL_DIR)/arm/mmu.c \
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$(LOCAL_DIR)/arm/thread.c \
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$(LOCAL_DIR)/arm/dcc.S
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MODULE_ARM_OVERRIDE_SRCS := \
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$(LOCAL_DIR)/arm/arch.c
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GLOBAL_DEFINES += \
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ARCH_DEFAULT_STACK_SIZE=4096
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ARCH_OPTFLAGS := -O2
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WITH_LINKER_GC ?= 1
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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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# for arm, have the kernel occupy the entire top 3GB of virtual space,
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# but put the kernel itself at 0x80000000.
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# this leaves 0x40000000 - 0x80000000 open for kernel space to use.
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GLOBAL_DEFINES += \
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KERNEL_ASPACE_BASE=0x40000000 \
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KERNEL_ASPACE_SIZE=0xc0000000
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KERNEL_BASE ?= 0x80000000
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KERNEL_LOAD_OFFSET ?= 0
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GLOBAL_DEFINES += \
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KERNEL_BASE=$(KERNEL_BASE) \
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KERNEL_LOAD_OFFSET=$(KERNEL_LOAD_OFFSET)
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# if its requested we build with SMP, arm generically supports 4 cpus
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ifeq ($(WITH_SMP),1)
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SMP_MAX_CPUS ?= 4
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GLOBAL_DEFINES += \
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WITH_SMP=1 \
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SMP_MAX_CPUS=$(SMP_MAX_CPUS)
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MODULE_SRCS += \
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$(LOCAL_DIR)/arm/mp.c
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else
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GLOBAL_DEFINES += \
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SMP_MAX_CPUS=1
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endif
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endif
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ifeq ($(SUBARCH),arm-m)
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MODULE_SRCS += \
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$(LOCAL_DIR)/arm-m/arch.c \
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$(LOCAL_DIR)/arm-m/vectab.c \
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$(LOCAL_DIR)/arm-m/start.c \
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$(LOCAL_DIR)/arm-m/exceptions.c \
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$(LOCAL_DIR)/arm-m/thread.c
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GLOBAL_INCLUDES += \
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$(LOCAL_DIR)/arm-m/CMSIS/Include
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# we're building for small binaries
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GLOBAL_DEFINES += \
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ARM_ONLY_THUMB=1 \
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ARCH_DEFAULT_STACK_SIZE=1024 \
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SMP_MAX_CPUS=1
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ARCH_OPTFLAGS := -Os
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WITH_LINKER_GC ?= 1
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endif
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# try to find the toolchain
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ifndef TOOLCHAIN_PREFIX
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TOOLCHAIN_PREFIX := arm-eabi-
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FOUNDTOOL=$(shell which $(TOOLCHAIN_PREFIX)gcc)
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ifeq ($(FOUNDTOOL),)
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TOOLCHAIN_PREFIX := arm-elf-
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FOUNDTOOL=$(shell which $(TOOLCHAIN_PREFIX)gcc)
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ifeq ($(FOUNDTOOL),)
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TOOLCHAIN_PREFIX := arm-none-eabi-
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FOUNDTOOL=$(shell which $(TOOLCHAIN_PREFIX)gcc)
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ifeq ($(FOUNDTOOL),)
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TOOLCHAIN_PREFIX := arm-linux-gnueabi-
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FOUNDTOOL=$(shell which $(TOOLCHAIN_PREFIX)gcc)
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# Set no stack protection if we found our gnueabi toolchain. We don't
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# need it.
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#
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# Stack protection is default in this toolchain and we get such errors
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# final linking stage:
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#
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# undefined reference to `__stack_chk_guard'
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# undefined reference to `__stack_chk_fail'
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# undefined reference to `__stack_chk_guard'
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#
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ifneq (,$(findstring arm-linux-gnueabi-,$(FOUNDTOOL)))
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GLOBAL_COMPILEFLAGS += -fno-stack-protector
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endif
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endif
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endif
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endif
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ifeq ($(FOUNDTOOL),)
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$(error cannot find toolchain, please set TOOLCHAIN_PREFIX or add it to your path)
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endif
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endif
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$(info TOOLCHAIN_PREFIX = $(TOOLCHAIN_PREFIX))
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GLOBAL_COMPILEFLAGS += $(THUMBINTERWORK)
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# make sure some bits were set up
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MEMVARS_SET := 0
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ifneq ($(MEMBASE),)
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MEMVARS_SET := 1
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endif
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ifneq ($(MEMSIZE),)
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MEMVARS_SET := 1
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endif
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ifeq ($(MEMVARS_SET),0)
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$(error missing MEMBASE or MEMSIZE variable, please set in target rules.mk)
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endif
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LIBGCC := $(shell $(TOOLCHAIN_PREFIX)gcc $(GLOBAL_COMPILEFLAGS) $(THUMBCFLAGS) -print-libgcc-file-name)
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# potentially generated files that should be cleaned out with clean make rule
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GENERATED += \
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$(BUILDDIR)/system-onesegment.ld \
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$(BUILDDIR)/system-twosegment.ld
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# rules for generating the linker scripts
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$(BUILDDIR)/system-onesegment.ld: $(LOCAL_DIR)/system-onesegment.ld $(wildcard arch/*.ld)
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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)/" < $< > $@
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$(BUILDDIR)/system-twosegment.ld: $(LOCAL_DIR)/system-twosegment.ld $(wildcard arch/*.ld)
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@echo generating $@
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@$(MKDIR)
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$(NOECHO)sed "s/%ROMBASE%/$(ROMBASE)/;s/%MEMBASE%/$(MEMBASE)/;s/%MEMSIZE%/$(MEMSIZE)/" < $< > $@
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# arm specific script to try to guess stack usage
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$(OUTELF).stack: LOCAL_DIR:=$(LOCAL_DIR)
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$(OUTELF).stack: $(OUTELF).lst
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$(NOECHO)echo generating stack usage $@
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$(NOECHO)$(LOCAL_DIR)/stackusage < $< | sort -n -k 1 -r > $@
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EXTRA_BUILDDEPS += $(OUTELF).stack
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include make/module.mk
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