91128ad729
- Add a percpu structure for each cpu, akin to x86-64 and riscv. Pointed to by x18, which is now reserved for this in the kernel. Tweaked exception and context switch routines to leave x18 alone. - Remove the cpu-trapping spinlock logic that is unused in mainline, probably. (Can add a new version of it back if it's necessary). - Switch fdtwalk helper to using the newer, cleaner way of initializing secondaries using the PSCI CPU_ON argument that should be pretty standard on modern implementations. (Possibly an issue with old firmware). - Remove the notion of computing the cpu ID from the Affinity levels, which doesn't really work properly on modern ARM CPUs which more or less abandoned the logical meaning of AFFn.
143 lines
3.8 KiB
Makefile
143 lines
3.8 KiB
Makefile
LOCAL_DIR := $(GET_LOCAL_DIR)
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MODULE := $(LOCAL_DIR)
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GLOBAL_DEFINES += \
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ARM64_CPU_$(ARM_CPU)=1 \
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ARM_ISA_ARMV8=1 \
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IS_64BIT=1
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MODULE_SRCS += \
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$(LOCAL_DIR)/arch.c \
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$(LOCAL_DIR)/asm.S \
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$(LOCAL_DIR)/exceptions.S \
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$(LOCAL_DIR)/exceptions_c.c \
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$(LOCAL_DIR)/fpu.c \
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$(LOCAL_DIR)/thread.c \
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$(LOCAL_DIR)/spinlock.S \
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$(LOCAL_DIR)/start.S \
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$(LOCAL_DIR)/cache-ops.S \
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# if its requested we build with SMP, default to 8 cpus
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ifeq (true,$(call TOBOOL,$(WITH_SMP)))
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SMP_MAX_CPUS ?= 8
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GLOBAL_DEFINES += \
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WITH_SMP=1 \
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SMP_MAX_CPUS=$(SMP_MAX_CPUS)
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MODULE_SRCS += \
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$(LOCAL_DIR)/mp.c
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else
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GLOBAL_DEFINES += \
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SMP_MAX_CPUS=1
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endif
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ARCH_OPTFLAGS := -O2
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# we have a mmu and want the vmm/pmm
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WITH_KERNEL_VM ?= 1
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ifeq (true,$(call TOBOOL,$(WITH_KERNEL_VM)))
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MODULE_SRCS += \
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$(LOCAL_DIR)/mmu.c
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ARM64_PAGE_SIZE ?= 4096
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# platform/target/project is allowed to override the page size the kernel
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# and user space will run at.
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ifeq ($(ARM64_PAGE_SIZE), 4096)
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# 48 bits of kernel and user address space (4 levels of page tables)
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KERNEL_ASPACE_BASE ?= 0xffff000000000000
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KERNEL_ASPACE_SIZE ?= 0x0001000000000000
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USER_ASPACE_BASE ?= 0x0000000001000000
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USER_ASPACE_SIZE ?= 0x0000fffffe000000
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else ifeq ($(ARM64_PAGE_SIZE), 16384)
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# 47 bits of kernel and user address space (3 levels of page tables)
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GLOBAL_DEFINES += ARM64_LARGE_PAGESIZE_16K=1
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KERNEL_ASPACE_BASE ?= 0xffff800000000000
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KERNEL_ASPACE_SIZE ?= 0x0000800000000000
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USER_ASPACE_BASE ?= 0x0000000001000000
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USER_ASPACE_SIZE ?= 0x00007ffffe000000
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else ifeq ($(ARM64_PAGE_SIZE), 65536)
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# 42 bits of kernel and user address space (2 levels of page tables)
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GLOBAL_DEFINES += ARM64_LARGE_PAGESIZE_64K=1
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KERNEL_ASPACE_BASE ?= 0xfffffc0000000000
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KERNEL_ASPACE_SIZE ?= 0x0000040000000000
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USER_ASPACE_BASE ?= 0x0000000001000000
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USER_ASPACE_SIZE ?= 0x000003fffe000000
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else
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$(error unsupported ARM64_PAGE_SIZE)
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endif
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GLOBAL_DEFINES += \
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KERNEL_ASPACE_BASE=$(KERNEL_ASPACE_BASE) \
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KERNEL_ASPACE_SIZE=$(KERNEL_ASPACE_SIZE) \
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USER_ASPACE_BASE=$(USER_ASPACE_BASE) \
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USER_ASPACE_SIZE=$(USER_ASPACE_SIZE) \
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ARCH_HAS_MMU=1
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KERNEL_BASE ?= $(KERNEL_ASPACE_BASE)
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KERNEL_LOAD_OFFSET ?= 0
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else # !WITH_KERNEL_VM
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KERNEL_BASE ?= $(MEMBASE)
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KERNEL_LOAD_OFFSET ?= 0
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endif
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GLOBAL_DEFINES += \
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KERNEL_BASE=$(KERNEL_BASE) \
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KERNEL_LOAD_OFFSET=$(KERNEL_LOAD_OFFSET)
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GLOBAL_DEFINES += \
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MEMBASE=$(MEMBASE) \
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MEMSIZE=$(MEMSIZE)
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# try to find the toolchain
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include $(LOCAL_DIR)/toolchain.mk
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TOOLCHAIN_PREFIX := $(ARCH_$(ARCH)_TOOLCHAIN_PREFIX)
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ARCH_COMPILEFLAGS += $(ARCH_$(ARCH)_COMPILEFLAGS)
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ARCH_COMPILEFLAGS += -ffixed-x18
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ARCH_COMPILEFLAGS += -fno-omit-frame-pointer
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ARCH_COMPILEFLAGS_NOFLOAT := -mgeneral-regs-only
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ARCH_COMPILEFLAGS_FLOAT :=
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ARCH_LDFLAGS += -z max-page-size=$(ARM64_PAGE_SIZE)
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# Note: assumes the use of gcc and the user is not overriding CC which is set later in engine.mk
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LIBGCC := $(shell $(TOOLCHAIN_PREFIX)gcc $(GLOBAL_COMPILEFLAGS) $(ARCH_COMPILEFLAGS) -print-libgcc-file-name)
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# make sure some bits were set up
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MEMVARS_SET := 0
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ifneq ($(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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$(error missing MEMBASE or MEMSIZE variable, please set in target rules.mk)
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endif
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# potentially generated files that should be cleaned out with clean make rule
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GENERATED += \
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$(BUILDDIR)/system-onesegment.ld
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# rules for generating the linker script
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$(BUILDDIR)/system-onesegment.ld: $(LOCAL_DIR)/system-onesegment.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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MODULE_OPTIONS := extra_warnings
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include make/module.mk
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