acfe991c7f
Support mp lk start on RISC-V. Several changes throughout were required: - Add signal in asm start to force secondary harts to wait for bss to be cleared. - Use mhartid in arch_curr_cpu_num, PLIC, and CLINT - Use tp register as thread pointer instead of global variable. - Support sending IPIs between harts using CLINT - Add spinlock implementation
91 lines
2.5 KiB
Makefile
91 lines
2.5 KiB
Makefile
LOCAL_DIR := $(GET_LOCAL_DIR)
|
|
|
|
MODULE := $(LOCAL_DIR)
|
|
|
|
MODULE_SRCS += $(LOCAL_DIR)/start.S
|
|
MODULE_SRCS += $(LOCAL_DIR)/arch.c
|
|
MODULE_SRCS += $(LOCAL_DIR)/asm.S
|
|
MODULE_SRCS += $(LOCAL_DIR)/clint.c
|
|
MODULE_SRCS += $(LOCAL_DIR)/exceptions.c
|
|
MODULE_SRCS += $(LOCAL_DIR)/thread.c
|
|
MODULE_SRCS += $(LOCAL_DIR)/mp.c
|
|
|
|
SMP_MAX_CPUS ?= 1
|
|
|
|
GLOBAL_DEFINES += SMP_MAX_CPUS=$(SMP_MAX_CPUS)
|
|
GLOBAL_DEFINES += PLATFORM_HAS_DYNAMIC_TIMER=1
|
|
|
|
ifeq ($(WITH_SMP),1)
|
|
GLOBAL_DEFINES += WITH_SMP=1
|
|
endif
|
|
|
|
SUBARCH ?= 32
|
|
|
|
WITH_LINKER_GC ?= 0
|
|
|
|
KERNEL_BASE ?= $(MEMBASE)
|
|
KERNEL_LOAD_OFFSET ?= 0
|
|
ROMBASE ?= 0
|
|
|
|
GLOBAL_DEFINES += ROMBASE=$(ROMBASE)
|
|
GLOBAL_DEFINES += MEMBASE=$(MEMBASE)
|
|
GLOBAL_DEFINES += MEMSIZE=$(MEMSIZE)
|
|
|
|
# based on 32 or 64 bitness, select the right toolchain and some
|
|
# compiler codegen flags
|
|
ifeq ($(SUBARCH),32)
|
|
|
|
ifndef TOOLCHAIN_PREFIX
|
|
TOOLCHAIN_PREFIX := riscv32-elf-
|
|
endif
|
|
ARCH_COMPILEFLAGS := -march=rv32imac -mabi=ilp32
|
|
|
|
else ifeq ($(SUBARCH),64)
|
|
|
|
ifndef TOOLCHAIN_PREFIX
|
|
TOOLCHAIN_PREFIX := riscv64-elf-
|
|
endif
|
|
ARCH_COMPILEFLAGS := -march=rv64imac -mabi=lp64 -mcmodel=medany
|
|
|
|
else
|
|
$(error SUBARCH not set or set to something unknown)
|
|
endif
|
|
|
|
# embedded switch sets the default compile optimization and passes
|
|
# a flag to the code to switch other things on
|
|
ifeq (true,$(call TOBOOL,$(ARCH_RISCV_EMBEDDED)))
|
|
ARCH_OPTFLAGS ?= -Os
|
|
GLOBAL_DEFINES += ARCH_RISCV_EMBEDDED=1
|
|
else
|
|
ARCH_OPTFLAGS ?= -O2
|
|
endif
|
|
|
|
LIBGCC := $(shell $(TOOLCHAIN_PREFIX)gcc $(GLOBAL_COMPILEFLAGS) $(ARCH_COMPILEFLAGS) $(GLOBAL_CFLAGS) -print-libgcc-file-name)
|
|
$(info LIBGCC = $(LIBGCC))
|
|
|
|
# potentially generated files that should be cleaned out with clean make rule
|
|
GENERATED += \
|
|
$(BUILDDIR)/linker-onesegment.ld \
|
|
$(BUILDDIR)/linker-twosegment.ld
|
|
|
|
# rules for generating the linker script
|
|
$(BUILDDIR)/linker-%.ld: $(LOCAL_DIR)/linker-%.ld $(wildcard arch/*.ld) linkerscript.phony
|
|
@echo generating $@
|
|
@$(MKDIR)
|
|
$(NOECHO)sed "s/%BITS%/$(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)/" < $< > $@.tmp
|
|
@$(call TESTANDREPLACEFILE,$@.tmp,$@)
|
|
|
|
linkerscript.phony:
|
|
.PHONY: linkerscript.phony
|
|
|
|
# select the appropriate linker script based on if we're a one or two segment system
|
|
ifeq (true,$(call TOBOOL,$(ARCH_RISCV_TWOSEGMENT)))
|
|
GLOBAL_DEFINES += ARCH_RISCV_TWOSEGMENT=1
|
|
LINKER_SCRIPT += $(BUILDDIR)/linker-twosegment.ld
|
|
else
|
|
GLOBAL_DEFINES += ARCH_RISCV_TWOSEGMENT=0
|
|
LINKER_SCRIPT += $(BUILDDIR)/linker-onesegment.ld
|
|
endif
|
|
|
|
include make/module.mk
|