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-rw-r--r--arch/mips/Makefile185
1 files changed, 100 insertions, 85 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index e1c44aed8156..80aecba24892 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -8,8 +8,7 @@
# Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki
#
# 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" cleaning up for this architecture.
+# architecture-specific flags and dependencies.
#
archscripts: scripts_basic
@@ -50,7 +49,7 @@ tool-archpref = $(64bit-tool-archpref)
UTS_MACHINE := mips64
endif
-ifneq ($(SUBARCH),$(ARCH))
+ifdef cross_compiling
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
endif
@@ -96,7 +95,7 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
# crossformat linking we rely on the elf2ecoff tool for format conversion.
#
cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
-cflags-y += -msoft-float
+cflags-y += -msoft-float -Wa,-msoft-float
LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
KBUILD_AFLAGS_MODULE += -mlong-calls
KBUILD_CFLAGS_MODULE += -mlong-calls
@@ -105,44 +104,10 @@ ifeq ($(CONFIG_RELOCATABLE),y)
LDFLAGS_vmlinux += --emit-relocs
endif
-#
-# pass -msoft-float to GAS if it supports it. However on newer binutils
-# (specifically newer than 2.24.51.20140728) we then also need to explicitly
-# set ".set hardfloat" in all files which manipulate floating point registers.
-#
-ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
- cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
-endif
-
cflags-y += -ffreestanding
-#
-# We explicitly add the endianness specifier if needed, this allows
-# to compile kernels with a toolchain for the other endianness. We
-# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
-# when fed the toolchain default!
-#
-# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
-# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
-# are used, so we kludge that here. A bug has been filed at
-# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
-#
-# clang doesn't suffer from these issues and our checks against -dumpmachine
-# don't work so well when cross compiling, since without providing --target
-# clang's output will be based upon the build machine. So for clang we simply
-# unconditionally specify -EB or -EL as appropriate.
-#
-ifdef CONFIG_CC_IS_CLANG
cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
-else
-undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
-undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
-predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
-predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
-cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
-cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
-endif
cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
-fno-omit-frame-pointer
@@ -161,43 +126,100 @@ cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
#
cflags-y += -fno-stack-check
+# binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
+# supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
+# instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
+# for a description).
+#
+# We disable this in order to prevent the assembler meddling with the
+# instruction that labels refer to, ie. if we label an ll instruction:
+#
+# 1: ll v0, 0(a0)
+#
+# ...then with the assembler fix applied the label may actually point at a sync
+# instruction inserted by the assembler, and if we were using the label in an
+# exception table the table would no longer contain the address of the ll
+# instruction.
+#
+# Avoid this by explicitly disabling that assembler behaviour.
+#
+cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
+
#
# CPU-dependent compiler/assembler options for optimization.
#
-cflags-$(CONFIG_CPU_R3000) += -march=r3000
-cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
-cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
-cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
-cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
+cflags-$(CONFIG_CPU_R3000) += $(call cc-option,-march=r3000,-march=mips1)
+cflags-$(CONFIG_CPU_R4300) += $(call cc-option,-march=r4300,-march=mips3) -Wa,--trap
+cflags-$(CONFIG_CPU_R4X00) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
+cflags-$(CONFIG_CPU_TX49XX) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
+cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
+cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
-cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
-cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
+cflags-$(CONFIG_CPU_P5600) += $(call cc-option,-march=p5600,-march=mips32r5) \
+ -Wa,--trap -modd-spreg
+cflags-$(CONFIG_CPU_R5000) += $(call cc-option,-march=r5000,-march=mips4) \
+ -Wa,--trap
+cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=mips4) \
-Wa,--trap
-cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
+cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=mips4) \
-Wa,--trap
-cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
+cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=mips4) \
-Wa,--trap
-cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
+cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=mips64r1) \
-Wa,--trap
cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
-cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
+cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=mips4) \
-Wa,--trap
-cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
-ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
-cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
-endif
+cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -march=octeon -Wa,--trap
cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
-cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
+cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,--trap
+
+cflags-$(CONFIG_CPU_LOONGSON2E) += \
+ $(call cc-option,-march=loongson2e,-march=mips3) -Wa,--trap
+cflags-$(CONFIG_CPU_LOONGSON2F) += \
+ $(call cc-option,-march=loongson2f,-march=mips3) -Wa,--trap
+# Some -march= flags enable MMI instructions, and GCC complains about that
+# support being enabled alongside -msoft-float. Thus explicitly disable MMI.
+cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi)
+cflags-$(CONFIG_CPU_LOONGSON64) += \
+ $(call cc-option,-march=loongson3a,-march=mips64r2) -Wa,--trap
+cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-mno-loongson-mmi)
cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
+ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS
+cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa,-mfix-loongson2f-nop
+cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa,-mfix-loongson2f-jump
+endif
+
+#
+# Some versions of binutils, not currently mainline as of 2019/02/04, support
+# an -mfix-loongson3-llsc flag which emits a sync prior to each ll instruction
+# to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h for a
+# description).
+#
+# We disable this in order to prevent the assembler meddling with the
+# instruction that labels refer to, ie. if we label an ll instruction:
+#
+# 1: ll v0, 0(a0)
+#
+# ...then with the assembler fix applied the label may actually point at a sync
+# instruction inserted by the assembler, and if we were using the label in an
+# exception table the table would no longer contain the address of the ll
+# instruction.
+#
+# Avoid this by explicitly disabling that assembler behaviour. If upstream
+# binutils does not merge support for the flag then we can revisit & remove
+# this later - for now it ensures vendor toolchains don't cause problems.
+#
+cflags-$(CONFIG_CPU_LOONGSON64) += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
# For smartmips configurations, there are hundreds of warnings due to ISA overrides
# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
@@ -256,7 +278,7 @@ endif
#
# Board-dependent options and extra files
#
-include arch/mips/Kbuild.platforms
+include $(srctree)/arch/mips/Kbuild.platforms
ifdef CONFIG_PHYSICAL_START
load-y = $(CONFIG_PHYSICAL_START)
@@ -275,12 +297,12 @@ drivers-$(CONFIG_PCI) += arch/mips/pci/
ifdef CONFIG_64BIT
ifndef KBUILD_SYM32
ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
- KBUILD_SYM32 = y
+ KBUILD_SYM32 = $(call cc-option-yn, -msym32)
endif
endif
- ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
- cflags-y += -msym32 -DKBUILD_64BIT_SYM32
+ ifeq ($(KBUILD_SYM32), y)
+ cflags-$(KBUILD_SYM32) += -msym32 -DKBUILD_64BIT_SYM32
else
ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
$(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
@@ -288,12 +310,23 @@ ifdef CONFIG_64BIT
endif
endif
+# When linking a 32-bit executable the LLVM linker cannot cope with a
+# 32-bit load address that has been sign-extended to 64 bits. Simply
+# remove the upper 32 bits then, as it is safe to do so with other
+# linkers.
+ifdef CONFIG_64BIT
+ load-ld = $(load-y)
+else
+ load-ld = $(subst 0xffffffff,0x,$(load-y))
+endif
+
KBUILD_AFLAGS += $(cflags-y)
KBUILD_CFLAGS += $(cflags-y)
-KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
+KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
+ LINKER_LOAD_ADDRESS=$(load-ld) \
VMLINUX_ENTRY_ADDRESS=$(entry-y) \
PLATFORM="$(platform-y)" \
ITS_INPUTS="$(its-y)"
@@ -310,24 +343,18 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_LDFLAGS += -m $(ld-emul)
-ifdef CONFIG_MIPS
-CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
- egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
+ifdef need-compiler
+CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
+ grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
endif
OBJCOPYFLAGS += --remove-section=.reginfo
-head-y := arch/mips/kernel/head.o
-
libs-y += arch/mips/lib/
libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
-# See arch/mips/Kbuild for content of core part of the kernel
-core-y += arch/mips/
-
drivers-y += arch/mips/crypto/
-drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
# suspend and hibernation support
drivers-$(CONFIG_PM) += arch/mips/power/
@@ -336,14 +363,12 @@ drivers-$(CONFIG_PM) += arch/mips/power/
boot-y := vmlinux.bin
boot-y += vmlinux.ecoff
boot-y += vmlinux.srec
-ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
boot-y += uImage
boot-y += uImage.bin
boot-y += uImage.bz2
boot-y += uImage.gz
boot-y += uImage.lzma
boot-y += uImage.lzo
-endif
boot-y += vmlinux.itb
boot-y += vmlinux.gz.itb
boot-y += vmlinux.bz2.itb
@@ -355,15 +380,8 @@ bootz-y := vmlinuz
bootz-y += vmlinuz.bin
bootz-y += vmlinuz.ecoff
bootz-y += vmlinuz.srec
-ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
bootz-y += uzImage.bin
-endif
-
-ifdef CONFIG_LASAT
-rom.bin rom.sw: vmlinux
- $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
- $(bootvars-y) $@
-endif
+bootz-y += vmlinuz.itb
#
# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
@@ -395,7 +413,7 @@ ifdef CONFIG_SYS_SUPPORTS_ZBOOT
# boot/compressed
$(bootz-y): $(vmlinux-32) FORCE
$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
- $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
+ $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
else
vmlinuz: FORCE
@echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
@@ -426,12 +444,6 @@ endif
$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
-archclean:
- $(Q)$(MAKE) $(clean)=arch/mips/boot
- $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
- $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
- $(Q)$(MAKE) $(clean)=arch/mips/lasat
-
archheaders:
$(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
@@ -561,6 +573,9 @@ sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
legacy_defconfigs += xilfpga_defconfig
xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
+legacy_defconfigs += pistachio_defconfig
+pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk
+
.PHONY: $(legacy_defconfigs)
$(legacy_defconfigs):
$(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)
generated by cgit (git 2.34.1) at 2024-05-09 07:44:42 +0000