arch/mips/config.mk

   1 # SPDX-License-Identifier: GPL-2.0+
   2 #
   3 # (C) Copyright 2003
   4 # Wolfgang Denk, DENX Software Engineering, [email protected].
   5
   6 ifdef CONFIG_SYS_BIG_ENDIAN
   7 32bit-emul              := elf32btsmip
   8 64bit-emul              := elf64btsmip
   9 32bit-bfd               := elf32-tradbigmips
  10 64bit-bfd               := elf64-tradbigmips
  11 PLATFORM_CPPFLAGS       += -EB
  12 KBUILD_LDFLAGS          += -EB
  13 endif
  14
  15 ifdef CONFIG_SYS_LITTLE_ENDIAN
  16 32bit-emul              := elf32ltsmip
  17 64bit-emul              := elf64ltsmip
  18 32bit-bfd               := elf32-tradlittlemips
  19 64bit-bfd               := elf64-tradlittlemips
  20 PLATFORM_CPPFLAGS       += -EL
  21 KBUILD_LDFLAGS          += -EL
  22 endif
  23
  24 ifdef CONFIG_32BIT
  25 PLATFORM_CPPFLAGS       += -mabi=32
  26 KBUILD_LDFLAGS          += -m $(32bit-emul)
  27 OBJCOPYFLAGS            += -O $(32bit-bfd)
  28 endif
  29
  30 ifdef CONFIG_64BIT
  31 PLATFORM_CPPFLAGS       += -mabi=64
  32 KBUILD_LDFLAGS          += -m$(64bit-emul)
  33 OBJCOPYFLAGS            += -O $(64bit-bfd)
  34 endif
  35
  36 PLATFORM_CPPFLAGS += -D__MIPS__
  37 PLATFORM_ELFFLAGS += -B mips $(OBJCOPYFLAGS)
  38
  39 #
  40 # From Linux arch/mips/Makefile
  41 #
  42 # GCC uses -G 0 -mabicalls -fpic as default.  We don't want PIC in the kernel
  43 # code since it only slows down the whole thing.  At some point we might make
  44 # use of global pointer optimizations but their use of $28 conflicts with
  45 # the current pointer optimization.
  46 #
  47 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
  48 # machines may also.  Since BFD is incredibly buggy with respect to
  49 # crossformat linking we rely on the elf2ecoff tool for format conversion.
  50 #
  51 # cflags-y                      += -G 0 -mno-abicalls -fno-pic -pipe
  52 # cflags-y                      += -msoft-float
  53 # LDFLAGS_vmlinux               += -G 0 -static -n -nostdlib
  54 # MODFLAGS                      += -mlong-calls
  55 #
  56 ifndef CONFIG_XPL_BUILD
  57 OBJCOPYFLAGS                    += -j .data.reloc -j .dtb.init.rodata
  58 LDFLAGS_FINAL                   += --emit-relocs
  59 endif
  60
  61 PLATFORM_CPPFLAGS               += -G 0 -mno-abicalls -fno-pic
  62 PLATFORM_CPPFLAGS               += -msoft-float
  63 KBUILD_LDFLAGS                  += -G 0 -static -n -nostdlib
  64 PLATFORM_RELFLAGS               += -ffunction-sections -fdata-sections
  65 LDFLAGS_FINAL                   += --gc-sections
  66 OBJCOPYFLAGS                    += -j .text -j .rodata -j .data -j __u_boot_list
  67
  68 LDFLAGS_STANDALONE              += --gc-sections