3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 # SPDX-License-Identifier: GPL-2.0+
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
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
27 PLATFORM_CPPFLAGS += -mabi=32
28 PLATFORM_LDFLAGS += -m $(32bit-emul)
29 OBJCOPYFLAGS += -O $(32bit-bfd)
33 PLATFORM_CPPFLAGS += -mabi=64
34 PLATFORM_LDFLAGS += -m$(64bit-emul)
35 OBJCOPYFLAGS += -O $(64bit-bfd)
38 PLATFORM_CPPFLAGS += -D__MIPS__
39 PLATFORM_ELFENTRY = "__start"
40 PLATFORM_ELFFLAGS += -B mips $(OBJCOPYFLAGS)
43 # From Linux arch/mips/Makefile
45 # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
46 # code since it only slows down the whole thing. At some point we might make
47 # use of global pointer optimizations but their use of $28 conflicts with
48 # the current pointer optimization.
50 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
51 # machines may also. Since BFD is incredibly buggy with respect to
52 # crossformat linking we rely on the elf2ecoff tool for format conversion.
54 # cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
55 # cflags-y += -msoft-float
56 # LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
57 # MODFLAGS += -mlong-calls
59 # On the other hand, we want PIC in the U-Boot code to relocate it from ROM
60 # to RAM. $28 is always used as gp.
62 ifdef CONFIG_SPL_BUILD
63 PF_ABICALLS := -mno-abicalls
67 PF_ABICALLS := -mabicalls
70 PF_OBJCOPY := -j .got -j .rel.dyn -j .padding
71 PF_OBJCOPY += -j .dtb.init.rodata
74 PLATFORM_CPPFLAGS += -G 0 $(PF_ABICALLS) $(PF_PIC)
75 PLATFORM_CPPFLAGS += -msoft-float
76 PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
77 PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
78 LDFLAGS_FINAL += --gc-sections $(PF_PIE)
79 OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list
80 OBJCOPYFLAGS += $(PF_OBJCOPY)