MIPS: refactor setting of compiler options
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>
diff --git a/arch/mips/config.mk b/arch/mips/config.mk
index a2d07af..b758116 100644
--- a/arch/mips/config.mk
+++ b/arch/mips/config.mk
@@ -5,25 +5,41 @@
# SPDX-License-Identifier: GPL-2.0+
#
-ifeq ($(CROSS_COMPILE),)
-CROSS_COMPILE := mips_4KC-
+ifdef CONFIG_SYS_BIG_ENDIAN
+32bit-emul := elf32btsmip
+64bit-emul := elf64btsmip
+32bit-bfd := elf32-tradbigmips
+64bit-bfd := elf64-tradbigmips
+PLATFORM_CPPFLAGS += -EB
+PLATFORM_LDFLAGS += -EB
endif
-# Handle special prefix in ELDK 4.0 toolchain
-ifneq (,$(findstring 4KCle,$(CROSS_COMPILE)))
-ENDIANNESS := -EL
+ifdef CONFIG_SYS_LITTLE_ENDIAN
+32bit-emul := elf32ltsmip
+64bit-emul := elf64ltsmip
+32bit-bfd := elf32-tradlittlemips
+64bit-bfd := elf64-tradlittlemips
+PLATFORM_CPPFLAGS += -EL
+PLATFORM_LDFLAGS += -EL
endif
-ifdef CONFIG_SYS_LITTLE_ENDIAN
-ENDIANNESS := -EL
+ifdef CONFIG_32BIT
+PLATFORM_CPPFLAGS += -mabi=32
+PLATFORM_LDFLAGS += -m $(32bit-emul)
+OBJCOPYFLAGS += -O $(32bit-bfd)
endif
-ifdef CONFIG_SYS_BIG_ENDIAN
-ENDIANNESS := -EB
+ifdef CONFIG_64BIT
+PLATFORM_CPPFLAGS += -mabi=64
+PLATFORM_LDFLAGS += -m$(64bit-emul)
+OBJCOPYFLAGS += -O $(64bit-bfd)
endif
-# Default to EB if no endianess is configured
-ENDIANNESS ?= -EB
+cpuflags-$(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 @@
# 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