| wdenk | 4fc9569 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 1 | # |
| 2 | # (C) Copyright 2003 |
| 3 | # Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | # |
| Wolfgang Denk | d79de1d | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 5 | # SPDX-License-Identifier: GPL-2.0+ |
| wdenk | 4fc9569 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 6 | # |
| 7 | |
| Daniel Schwierzeck | c03df26 | 2014-10-26 14:16:23 +0100 | [diff] [blame] | 8 | ifdef CONFIG_SYS_BIG_ENDIAN |
| 9 | 32bit-emul := elf32btsmip |
| 10 | 64bit-emul := elf64btsmip |
| 11 | 32bit-bfd := elf32-tradbigmips |
| 12 | 64bit-bfd := elf64-tradbigmips |
| 13 | PLATFORM_CPPFLAGS += -EB |
| 14 | PLATFORM_LDFLAGS += -EB |
| Masahiro Yamada | f0ac9e0 | 2014-02-28 14:33:30 +0900 | [diff] [blame] | 15 | endif |
| Mike Frysinger | 8378ba4 | 2009-06-14 23:33:14 -0400 | [diff] [blame] | 16 | |
| Daniel Schwierzeck | c03df26 | 2014-10-26 14:16:23 +0100 | [diff] [blame] | 17 | ifdef CONFIG_SYS_LITTLE_ENDIAN |
| 18 | 32bit-emul := elf32ltsmip |
| 19 | 64bit-emul := elf64ltsmip |
| 20 | 32bit-bfd := elf32-tradlittlemips |
| 21 | 64bit-bfd := elf64-tradlittlemips |
| 22 | PLATFORM_CPPFLAGS += -EL |
| 23 | PLATFORM_LDFLAGS += -EL |
| Daniel Schwierzeck | c390ba5 | 2012-08-21 23:27:37 +0200 | [diff] [blame] | 24 | endif |
| 25 | |
| Daniel Schwierzeck | c03df26 | 2014-10-26 14:16:23 +0100 | [diff] [blame] | 26 | ifdef CONFIG_32BIT |
| 27 | PLATFORM_CPPFLAGS += -mabi=32 |
| 28 | PLATFORM_LDFLAGS += -m $(32bit-emul) |
| 29 | OBJCOPYFLAGS += -O $(32bit-bfd) |
| Daniel Schwierzeck | c390ba5 | 2012-08-21 23:27:37 +0200 | [diff] [blame] | 30 | endif |
| 31 | |
| Daniel Schwierzeck | c03df26 | 2014-10-26 14:16:23 +0100 | [diff] [blame] | 32 | ifdef CONFIG_64BIT |
| 33 | PLATFORM_CPPFLAGS += -mabi=64 |
| 34 | PLATFORM_LDFLAGS += -m$(64bit-emul) |
| 35 | OBJCOPYFLAGS += -O $(64bit-bfd) |
| Daniel Schwierzeck | c390ba5 | 2012-08-21 23:27:37 +0200 | [diff] [blame] | 36 | endif |
| 37 | |
| Daniel Schwierzeck | c03df26 | 2014-10-26 14:16:23 +0100 | [diff] [blame] | 38 | cpuflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32 |
| 39 | cpuflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2 |
| 40 | cpuflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64 |
| 41 | cpuflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2 |
| 42 | PLATFORM_CPPFLAGS += $(cpuflags-y) |
| Daniel Schwierzeck | c390ba5 | 2012-08-21 23:27:37 +0200 | [diff] [blame] | 43 | |
| Masahiro Yamada | 4869aee | 2014-07-30 14:08:23 +0900 | [diff] [blame] | 44 | PLATFORM_CPPFLAGS += -D__MIPS__ |
| Shinya Kuribayashi | 4b6d280 | 2007-10-21 21:30:42 +0900 | [diff] [blame] | 45 | |
| 46 | # |
| 47 | # From Linux arch/mips/Makefile |
| 48 | # |
| 49 | # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel |
| 50 | # code since it only slows down the whole thing. At some point we might make |
| 51 | # use of global pointer optimizations but their use of $28 conflicts with |
| 52 | # the current pointer optimization. |
| 53 | # |
| 54 | # The DECStation requires an ECOFF kernel for remote booting, other MIPS |
| 55 | # machines may also. Since BFD is incredibly buggy with respect to |
| 56 | # crossformat linking we rely on the elf2ecoff tool for format conversion. |
| 57 | # |
| 58 | # cflags-y += -G 0 -mno-abicalls -fno-pic -pipe |
| 59 | # cflags-y += -msoft-float |
| 60 | # LDFLAGS_vmlinux += -G 0 -static -n -nostdlib |
| 61 | # MODFLAGS += -mlong-calls |
| 62 | # |
| Shinya Kuribayashi | 8bf10e2 | 2008-06-05 22:29:00 +0900 | [diff] [blame] | 63 | # On the other hand, we want PIC in the U-Boot code to relocate it from ROM |
| 64 | # to RAM. $28 is always used as gp. |
| Shinya Kuribayashi | 4b6d280 | 2007-10-21 21:30:42 +0900 | [diff] [blame] | 65 | # |
| Daniel Schwierzeck | eda26dd | 2015-12-19 20:20:47 +0100 | [diff] [blame^] | 66 | ifdef CONFIG_SPL_BUILD |
| 67 | PF_ABICALLS := -mno-abicalls |
| 68 | PF_PIC := -fno-pic |
| 69 | PF_PIE := |
| 70 | else |
| 71 | PF_ABICALLS := -mabicalls |
| 72 | PF_PIC := -fpic |
| 73 | PF_PIE := -pie |
| 74 | PF_OBJCOPY := -j .got -j .u_boot_list -j .rel.dyn -j .padding |
| 75 | endif |
| 76 | |
| 77 | PLATFORM_CPPFLAGS += -G 0 $(PF_ABICALLS) $(PF_PIC) |
| Shinya Kuribayashi | 4b6d280 | 2007-10-21 21:30:42 +0900 | [diff] [blame] | 78 | PLATFORM_CPPFLAGS += -msoft-float |
| Daniel Schwierzeck | c03df26 | 2014-10-26 14:16:23 +0100 | [diff] [blame] | 79 | PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib |
| Daniel Schwierzeck | 089f2a1 | 2011-04-15 17:16:44 +0200 | [diff] [blame] | 80 | PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections |
| Daniel Schwierzeck | eda26dd | 2015-12-19 20:20:47 +0100 | [diff] [blame^] | 81 | LDFLAGS_FINAL += --gc-sections $(PF_PIE) |
| 82 | OBJCOPYFLAGS += -j .text -j .rodata -j .data $(PF_OBJCOPY) |