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MIPS: refactor setting of compiler options

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Refactor and unify all compiler settings in arch/mips/config.mk.
Also add tune flags for each supported CPU type.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Daniel Schwierzeck 2014-10-26 14:16:23 +01:00
parent 4207917867
commit 837cad1e47
3 changed files with 30 additions and 42 deletions
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44
arch/mips/config.mk
View File

@ -5,25 +5,41 @@
# SPDX-License-Identifier: GPL-2.0+
#
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := mips_4KC-
endif
# Handle special prefix in ELDK 4.0 toolchain
ifneq (,$(findstring 4KCle,$(CROSS_COMPILE)))
ENDIANNESS := -EL
ifdef CONFIG_SYS_BIG_ENDIAN
32bit-emul := elf32btsmip
64bit-emul := elf64btsmip
32bit-bfd := elf32-tradbigmips
64bit-bfd := elf64-tradbigmips
PLATFORM_CPPFLAGS += -EB
PLATFORM_LDFLAGS += -EB
endif
ifdef CONFIG_SYS_LITTLE_ENDIAN
ENDIANNESS := -EL
32bit-emul := elf32ltsmip
64bit-emul := elf64ltsmip
32bit-bfd := elf32-tradlittlemips
64bit-bfd := elf64-tradlittlemips
PLATFORM_CPPFLAGS += -EL
PLATFORM_LDFLAGS += -EL
endif
ifdef CONFIG_SYS_BIG_ENDIAN
ENDIANNESS := -EB
ifdef CONFIG_32BIT
PLATFORM_CPPFLAGS += -mabi=32
PLATFORM_LDFLAGS += -m $(32bit-emul)
OBJCOPYFLAGS += -O $(32bit-bfd)
endif
# Default to EB if no endianess is configured
ENDIANNESS ?= -EB
ifdef CONFIG_64BIT
PLATFORM_CPPFLAGS += -mabi=64
PLATFORM_LDFLAGS += -m$(64bit-emul)
OBJCOPYFLAGS += -O $(64bit-bfd)
endif
cpuflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32
cpuflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2
cpuflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64
cpuflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2
PLATFORM_CPPFLAGS += $(cpuflags-y)
PLATFORM_CPPFLAGS += -D__MIPS__
@ -49,9 +65,9 @@ __HAVE_ARCH_GENERIC_BOARD := y
# On the other hand, we want PIC in the U-Boot code to relocate it from ROM
# to RAM. $28 is always used as gp.
#
PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic $(ENDIANNESS)
PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic
PLATFORM_CPPFLAGS += -msoft-float
PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib $(ENDIANNESS)
PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
LDFLAGS_FINAL += --gc-sections -pie
OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .got

14
arch/mips/cpu/mips32/config.mk
View File

@ -5,19 +5,5 @@
# SPDX-License-Identifier: GPL-2.0+
#
#
# Default optimization level for MIPS32
#
# Note: Toolchains with binutils prior to v2.16
# are no longer supported by U-Boot MIPS tree!
#
PLATFORM_CPPFLAGS += -DCONFIG_MIPS32 -march=mips32r2
PLATFORM_CPPFLAGS += -mabi=32 -DCONFIG_32BIT
ifdef CONFIG_SYS_BIG_ENDIAN
PLATFORM_LDFLAGS += -m elf32btsmip
else
PLATFORM_LDFLAGS += -m elf32ltsmip
endif
CONFIG_STANDALONE_LOAD_ADDR ?= 0x80200000 \
-T $(srctree)/examples/standalone/mips.lds

14
arch/mips/cpu/mips64/config.mk
View File

@ -5,19 +5,5 @@
# SPDX-License-Identifier: GPL-2.0+
#
#
# Default optimization level for MIPS64
#
# Note: Toolchains with binutils prior to v2.16
# are no longer supported by U-Boot MIPS tree!
#
PLATFORM_CPPFLAGS += -DCONFIG_MIPS64 -march=mips64
PLATFORM_CPPFLAGS += -mabi=64 -DCONFIG_64BIT
ifdef CONFIG_SYS_BIG_ENDIAN
PLATFORM_LDFLAGS += -m elf64btsmip
else
PLATFORM_LDFLAGS += -m elf64ltsmip
endif
CONFIG_STANDALONE_LOAD_ADDR ?= 0xffffffff80200000 \
-T $(srctree)/examples/standalone/mips64.lds