blob: 609a998f3b634798aca97dbad3d84599eef1315d [file] [log] [blame]
wdenk6069ff22003-02-28 00:49:47 +00001#
2# (C) Copyright 2003
3# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4#
Wolfgang Denk1a459662013-07-08 09:37:19 +02005# SPDX-License-Identifier: GPL-2.0+
wdenk6069ff22003-02-28 00:49:47 +00006#
7
Daniel Schwierzeck837cad12014-10-26 14:16:23 +01008ifdef CONFIG_SYS_BIG_ENDIAN
932bit-emul := elf32btsmip
1064bit-emul := elf64btsmip
1132bit-bfd := elf32-tradbigmips
1264bit-bfd := elf64-tradbigmips
13PLATFORM_CPPFLAGS += -EB
14PLATFORM_LDFLAGS += -EB
Daniel Schwierzeck2c0e3de2012-08-21 23:27:37 +020015endif
16
17ifdef CONFIG_SYS_LITTLE_ENDIAN
Daniel Schwierzeck837cad12014-10-26 14:16:23 +01001832bit-emul := elf32ltsmip
1964bit-emul := elf64ltsmip
2032bit-bfd := elf32-tradlittlemips
2164bit-bfd := elf64-tradlittlemips
22PLATFORM_CPPFLAGS += -EL
23PLATFORM_LDFLAGS += -EL
Daniel Schwierzeck2c0e3de2012-08-21 23:27:37 +020024endif
25
Daniel Schwierzeck837cad12014-10-26 14:16:23 +010026ifdef CONFIG_32BIT
27PLATFORM_CPPFLAGS += -mabi=32
28PLATFORM_LDFLAGS += -m $(32bit-emul)
29OBJCOPYFLAGS += -O $(32bit-bfd)
Daniel Schwierzeck2c0e3de2012-08-21 23:27:37 +020030endif
31
Daniel Schwierzeck837cad12014-10-26 14:16:23 +010032ifdef CONFIG_64BIT
33PLATFORM_CPPFLAGS += -mabi=64
34PLATFORM_LDFLAGS += -m$(64bit-emul)
35OBJCOPYFLAGS += -O $(64bit-bfd)
36endif
37
Masahiro Yamada90f984e2014-07-30 14:08:23 +090038PLATFORM_CPPFLAGS += -D__MIPS__
Shinya Kuribayashi00101dd2007-10-21 21:30:42 +090039
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#
Shinya Kuribayashif0d5a6f2008-06-05 22:29:00 +090057# On the other hand, we want PIC in the U-Boot code to relocate it from ROM
58# to RAM. $28 is always used as gp.
Shinya Kuribayashi00101dd2007-10-21 21:30:42 +090059#
Daniel Schwierzecke92d9122015-12-19 20:20:47 +010060ifdef CONFIG_SPL_BUILD
61PF_ABICALLS := -mno-abicalls
62PF_PIC := -fno-pic
63PF_PIE :=
64else
65PF_ABICALLS := -mabicalls
66PF_PIC := -fpic
67PF_PIE := -pie
68PF_OBJCOPY := -j .got -j .u_boot_list -j .rel.dyn -j .padding
Daniel Schwierzeck0fc13a92015-12-19 20:20:48 +010069PF_OBJCOPY += -j .dtb.init.rodata
Daniel Schwierzecke92d9122015-12-19 20:20:47 +010070endif
71
72PLATFORM_CPPFLAGS += -G 0 $(PF_ABICALLS) $(PF_PIC)
Shinya Kuribayashi00101dd2007-10-21 21:30:42 +090073PLATFORM_CPPFLAGS += -msoft-float
Daniel Schwierzeck837cad12014-10-26 14:16:23 +010074PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
Daniel Schwierzeck660da092011-04-15 17:16:44 +020075PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
Daniel Schwierzecke92d9122015-12-19 20:20:47 +010076LDFLAGS_FINAL += --gc-sections $(PF_PIE)
77OBJCOPYFLAGS += -j .text -j .rodata -j .data $(PF_OBJCOPY)