You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
2.1 KiB
54 lines
2.1 KiB
#
|
|
# Loongson Processors' Support
|
|
#
|
|
|
|
# Only gcc >= 4.4 have Loongson specific support
|
|
cflags-$(CONFIG_CPU_LOONGSON2) += -Wa,--trap
|
|
cflags-$(CONFIG_CPU_LOONGSON2E) += \
|
|
$(call cc-option,-march=loongson2e,-march=r4600)
|
|
cflags-$(CONFIG_CPU_LOONGSON2F) += \
|
|
$(call cc-option,-march=loongson2f,-march=r4600)
|
|
# Enable the workarounds for Loongson2f
|
|
ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS
|
|
ifeq ($(call as-option,-Wa$(comma)-mfix-loongson2f-nop,),)
|
|
$(error only binutils >= 2.20.2 have needed option -mfix-loongson2f-nop)
|
|
else
|
|
cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa$(comma)-mfix-loongson2f-nop
|
|
endif
|
|
ifeq ($(call as-option,-Wa$(comma)-mfix-loongson2f-jump,),)
|
|
$(error only binutils >= 2.20.2 have needed option -mfix-loongson2f-jump)
|
|
else
|
|
cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa$(comma)-mfix-loongson2f-jump
|
|
endif
|
|
endif
|
|
|
|
cflags-$(CONFIG_CPU_LOONGSON3) += -Wa,--trap
|
|
#
|
|
# binutils from v2.25 on and gcc starting from v4.9.0 treat -march=loongson3a
|
|
# as MIPS64 R2; older versions as just R1. This leaves the possibility open
|
|
# that GCC might generate R2 code for -march=loongson3a which then is rejected
|
|
# by GAS. The cc-option can't probe for this behaviour so -march=loongson3a
|
|
# can't easily be used safely within the kbuild framework.
|
|
#
|
|
ifeq ($(call cc-ifversion, -ge, 0409, y), y)
|
|
ifeq ($(call ld-ifversion, -ge, 225000000, y), y)
|
|
cflags-$(CONFIG_CPU_LOONGSON3) += \
|
|
$(call cc-option,-march=loongson3a -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64)
|
|
else
|
|
cflags-$(CONFIG_CPU_LOONGSON3) += \
|
|
$(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64)
|
|
endif
|
|
else
|
|
cflags-$(CONFIG_CPU_LOONGSON3) += \
|
|
$(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64)
|
|
endif
|
|
|
|
#
|
|
# Loongson Machines' Support
|
|
#
|
|
|
|
platform-$(CONFIG_MACH_LOONGSON64) += loongson64/
|
|
cflags-$(CONFIG_MACH_LOONGSON64) += -I$(srctree)/arch/mips/include/asm/mach-loongson64 -mno-branch-likely
|
|
load-$(CONFIG_LEMOTE_FULOONG2E) += 0xffffffff80100000
|
|
load-$(CONFIG_LEMOTE_MACH2F) += 0xffffffff80200000
|
|
load-$(CONFIG_LOONGSON_MACH3X) += 0xffffffff80200000
|
|
|