git.sur5r.net Git - u-boot/blob - arch/mips/config.mk

   1 # SPDX-License-Identifier: GPL-2.0+
   2 #
   3 # (C) Copyright 2003
   4 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   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 PLATFORM_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 PLATFORM_LDFLAGS        += -EL
  22 endif
  23
  24 ifdef CONFIG_32BIT
  25 PLATFORM_CPPFLAGS       += -mabi=32
  26 PLATFORM_LDFLAGS        += -m $(32bit-emul)
  27 OBJCOPYFLAGS            += -O $(32bit-bfd)
  28 endif
  29
  30 ifdef CONFIG_64BIT
  31 PLATFORM_CPPFLAGS       += -mabi=64
  32 PLATFORM_LDFLAGS        += -m$(64bit-emul)
  33 OBJCOPYFLAGS            += -O $(64bit-bfd)
  34 endif
  35
  36 PLATFORM_CPPFLAGS += -D__MIPS__
  37 PLATFORM_ELFENTRY = "__start"
  38 PLATFORM_ELFFLAGS += -B mips $(OBJCOPYFLAGS)
  39
  40 #
  41 # From Linux arch/mips/Makefile
  42 #
  43 # GCC uses -G 0 -mabicalls -fpic as default.  We don't want PIC in the kernel
  44 # code since it only slows down the whole thing.  At some point we might make
  45 # use of global pointer optimizations but their use of $28 conflicts with
  46 # the current pointer optimization.
  47 #
  48 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
  49 # machines may also.  Since BFD is incredibly buggy with respect to
  50 # crossformat linking we rely on the elf2ecoff tool for format conversion.
  51 #
  52 # cflags-y                      += -G 0 -mno-abicalls -fno-pic -pipe
  53 # cflags-y                      += -msoft-float
  54 # LDFLAGS_vmlinux               += -G 0 -static -n -nostdlib
  55 # MODFLAGS                      += -mlong-calls
  56 #
  57 ifndef CONFIG_SPL_BUILD
  58 OBJCOPYFLAGS                    += -j .got -j .rel -j .padding -j .dtb.init.rodata
  59 LDFLAGS_FINAL                   += --emit-relocs
  60 endif
  61
  62 PLATFORM_CPPFLAGS               += -G 0 -mno-abicalls -fno-pic
  63 PLATFORM_CPPFLAGS               += -msoft-float
  64 PLATFORM_LDFLAGS                += -G 0 -static -n -nostdlib
  65 PLATFORM_RELFLAGS               += -ffunction-sections -fdata-sections
  66 LDFLAGS_FINAL                   += --gc-sections
  67 OBJCOPYFLAGS                    += -j .text -j .rodata -j .data -j .u_boot_list