mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 08:31:03 +00:00
0315a28909
Move setup of -march to arch/mips/Makefile and follow the design on ARM. Also add a possibility to chose specific CPU tune options. Signed-off-by: Wills Wang <wills.wang@live.com> Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
77 lines
2.1 KiB
Makefile
77 lines
2.1 KiB
Makefile
#
|
|
# (C) Copyright 2003
|
|
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
#
|
|
# SPDX-License-Identifier: GPL-2.0+
|
|
#
|
|
|
|
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
|
|
32bit-emul := elf32ltsmip
|
|
64bit-emul := elf64ltsmip
|
|
32bit-bfd := elf32-tradlittlemips
|
|
64bit-bfd := elf64-tradlittlemips
|
|
PLATFORM_CPPFLAGS += -EL
|
|
PLATFORM_LDFLAGS += -EL
|
|
endif
|
|
|
|
ifdef CONFIG_32BIT
|
|
PLATFORM_CPPFLAGS += -mabi=32
|
|
PLATFORM_LDFLAGS += -m $(32bit-emul)
|
|
OBJCOPYFLAGS += -O $(32bit-bfd)
|
|
endif
|
|
|
|
ifdef CONFIG_64BIT
|
|
PLATFORM_CPPFLAGS += -mabi=64
|
|
PLATFORM_LDFLAGS += -m$(64bit-emul)
|
|
OBJCOPYFLAGS += -O $(64bit-bfd)
|
|
endif
|
|
|
|
PLATFORM_CPPFLAGS += -D__MIPS__
|
|
|
|
#
|
|
# From Linux arch/mips/Makefile
|
|
#
|
|
# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
|
|
# code since it only slows down the whole thing. At some point we might make
|
|
# use of global pointer optimizations but their use of $28 conflicts with
|
|
# the current pointer optimization.
|
|
#
|
|
# The DECStation requires an ECOFF kernel for remote booting, other MIPS
|
|
# machines may also. Since BFD is incredibly buggy with respect to
|
|
# crossformat linking we rely on the elf2ecoff tool for format conversion.
|
|
#
|
|
# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
|
|
# cflags-y += -msoft-float
|
|
# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
|
|
# MODFLAGS += -mlong-calls
|
|
#
|
|
# 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.
|
|
#
|
|
ifdef CONFIG_SPL_BUILD
|
|
PF_ABICALLS := -mno-abicalls
|
|
PF_PIC := -fno-pic
|
|
PF_PIE :=
|
|
else
|
|
PF_ABICALLS := -mabicalls
|
|
PF_PIC := -fpic
|
|
PF_PIE := -pie
|
|
PF_OBJCOPY := -j .got -j .u_boot_list -j .rel.dyn -j .padding
|
|
PF_OBJCOPY += -j .dtb.init.rodata
|
|
endif
|
|
|
|
PLATFORM_CPPFLAGS += -G 0 $(PF_ABICALLS) $(PF_PIC)
|
|
PLATFORM_CPPFLAGS += -msoft-float
|
|
PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
|
|
PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
|
|
LDFLAGS_FINAL += --gc-sections $(PF_PIE)
|
|
OBJCOPYFLAGS += -j .text -j .rodata -j .data $(PF_OBJCOPY)
|