mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 13:26:45 +07:00
e8be530233
This patch cleanup the MARCH string passing to both compiler and assembler. Note that the CFLAGS should not contain "fd" before we have mechnisms like kernel_fpu_begin/end in other architectures. Signed-off-by: Alan Kao <alankao@andestech.com> Cc: Greentime Hu <greentime@andestech.com> Cc: Vincent Chen <vincentc@andestech.com> Cc: Zong Li <zong@andestech.com> Cc: Nick Hu <nickhu@andestech.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
83 lines
2.3 KiB
Makefile
83 lines
2.3 KiB
Makefile
# This file is included by the global makefile so that you can add your own
|
|
# architecture-specific flags and dependencies. Remember to do have actions
|
|
# for "archclean" and "archdep" for cleaning up and making dependencies for
|
|
# this architecture
|
|
#
|
|
# This file is subject to the terms and conditions of the GNU General Public
|
|
# License. See the file "COPYING" in the main directory of this archive
|
|
# for more details.
|
|
#
|
|
|
|
OBJCOPYFLAGS := -O binary
|
|
LDFLAGS_vmlinux :=
|
|
ifeq ($(CONFIG_DYNAMIC_FTRACE),y)
|
|
LDFLAGS_vmlinux := --no-relax
|
|
endif
|
|
KBUILD_AFLAGS_MODULE += -fPIC
|
|
KBUILD_CFLAGS_MODULE += -fPIC
|
|
|
|
KBUILD_DEFCONFIG = defconfig
|
|
|
|
export BITS
|
|
ifeq ($(CONFIG_ARCH_RV64I),y)
|
|
BITS := 64
|
|
UTS_MACHINE := riscv64
|
|
|
|
KBUILD_CFLAGS += -mabi=lp64
|
|
KBUILD_AFLAGS += -mabi=lp64
|
|
|
|
KBUILD_CFLAGS += $(call cc-ifversion, -ge, 0500, -DCONFIG_ARCH_SUPPORTS_INT128)
|
|
|
|
KBUILD_LDFLAGS += -melf64lriscv
|
|
else
|
|
BITS := 32
|
|
UTS_MACHINE := riscv32
|
|
|
|
KBUILD_CFLAGS += -mabi=ilp32
|
|
KBUILD_AFLAGS += -mabi=ilp32
|
|
KBUILD_LDFLAGS += -melf32lriscv
|
|
endif
|
|
|
|
KBUILD_CFLAGS += -Wall
|
|
|
|
# ISA string setting
|
|
riscv-march-$(CONFIG_ARCH_RV32I) := rv32im
|
|
riscv-march-$(CONFIG_ARCH_RV64I) := rv64im
|
|
riscv-march-$(CONFIG_RISCV_ISA_A) := $(riscv-march-y)a
|
|
riscv-march-y := $(riscv-march-y)fd
|
|
riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
|
|
KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
|
|
KBUILD_AFLAGS += -march=$(riscv-march-y)
|
|
|
|
KBUILD_CFLAGS += -mno-save-restore
|
|
KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET)
|
|
|
|
ifeq ($(CONFIG_CMODEL_MEDLOW),y)
|
|
KBUILD_CFLAGS += -mcmodel=medlow
|
|
endif
|
|
ifeq ($(CONFIG_CMODEL_MEDANY),y)
|
|
KBUILD_CFLAGS += -mcmodel=medany
|
|
endif
|
|
ifeq ($(CONFIG_MODULE_SECTIONS),y)
|
|
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/riscv/kernel/module.lds
|
|
endif
|
|
|
|
KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax)
|
|
|
|
# GCC versions that support the "-mstrict-align" option default to allowing
|
|
# unaligned accesses. While unaligned accesses are explicitly allowed in the
|
|
# RISC-V ISA, they're emulated by machine mode traps on all extant
|
|
# architectures. It's faster to have GCC emit only aligned accesses.
|
|
KBUILD_CFLAGS += $(call cc-option,-mstrict-align)
|
|
|
|
# arch specific predefines for sparse
|
|
CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS)
|
|
|
|
head-y := arch/riscv/kernel/head.o
|
|
|
|
core-y += arch/riscv/kernel/ arch/riscv/mm/
|
|
|
|
libs-y += arch/riscv/lib/
|
|
|
|
all: vmlinux
|