config.mk 2.1 KB

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  1. # SPDX-License-Identifier: GPL-2.0+
  2. #
  3. # (C) Copyright 2003
  4. # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  5. ifdef CONFIG_SYS_BIG_ENDIAN
  6. 32bit-emul := elf32btsmip
  7. 64bit-emul := elf64btsmip
  8. 32bit-bfd := elf32-tradbigmips
  9. 64bit-bfd := elf64-tradbigmips
  10. PLATFORM_CPPFLAGS += -EB
  11. PLATFORM_LDFLAGS += -EB
  12. endif
  13. ifdef CONFIG_SYS_LITTLE_ENDIAN
  14. 32bit-emul := elf32ltsmip
  15. 64bit-emul := elf64ltsmip
  16. 32bit-bfd := elf32-tradlittlemips
  17. 64bit-bfd := elf64-tradlittlemips
  18. PLATFORM_CPPFLAGS += -EL
  19. PLATFORM_LDFLAGS += -EL
  20. endif
  21. ifdef CONFIG_32BIT
  22. PLATFORM_CPPFLAGS += -mabi=32
  23. PLATFORM_LDFLAGS += -m $(32bit-emul)
  24. OBJCOPYFLAGS += -O $(32bit-bfd)
  25. CONFIG_STANDALONE_LOAD_ADDR ?= 0x80200000
  26. endif
  27. ifdef CONFIG_64BIT
  28. PLATFORM_CPPFLAGS += -mabi=64
  29. PLATFORM_LDFLAGS += -m$(64bit-emul)
  30. OBJCOPYFLAGS += -O $(64bit-bfd)
  31. CONFIG_STANDALONE_LOAD_ADDR ?= 0xffffffff80200000
  32. endif
  33. PLATFORM_CPPFLAGS += -D__MIPS__
  34. PLATFORM_ELFENTRY = "__start"
  35. PLATFORM_ELFFLAGS += -B mips $(OBJCOPYFLAGS)
  36. #
  37. # From Linux arch/mips/Makefile
  38. #
  39. # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
  40. # code since it only slows down the whole thing. At some point we might make
  41. # use of global pointer optimizations but their use of $28 conflicts with
  42. # the current pointer optimization.
  43. #
  44. # The DECStation requires an ECOFF kernel for remote booting, other MIPS
  45. # machines may also. Since BFD is incredibly buggy with respect to
  46. # crossformat linking we rely on the elf2ecoff tool for format conversion.
  47. #
  48. # cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
  49. # cflags-y += -msoft-float
  50. # LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
  51. # MODFLAGS += -mlong-calls
  52. #
  53. ifndef CONFIG_SPL_BUILD
  54. OBJCOPYFLAGS += -j .data.reloc -j .dtb.init.rodata
  55. LDFLAGS_FINAL += --emit-relocs
  56. endif
  57. PLATFORM_CPPFLAGS += -G 0 -mno-abicalls -fno-pic
  58. PLATFORM_CPPFLAGS += -msoft-float
  59. PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
  60. PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
  61. LDFLAGS_FINAL += --gc-sections
  62. OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list
  63. LDFLAGS_STANDALONE += --gc-sections