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 $(64bit-bfd)
38 cpuflags-$(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)
44 PLATFORM_CPPFLAGS += -D__MIPS__
46 __HAVE_ARCH_GENERIC_BOARD := y
49 # From Linux arch/mips/Makefile
51 # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
52 # code since it only slows down the whole thing. At some point we might make
53 # use of global pointer optimizations but their use of $28 conflicts with
54 # the current pointer optimization.
56 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
57 # machines may also. Since BFD is incredibly buggy with respect to
58 # crossformat linking we rely on the elf2ecoff tool for format conversion.
60 # cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
61 # cflags-y += -msoft-float
62 # LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
63 # MODFLAGS += -mlong-calls
65 # On the other hand, we want PIC in the U-Boot code to relocate it from ROM
66 # to RAM. $28 is always used as gp.
68 PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic
69 PLATFORM_CPPFLAGS += -msoft-float
70 PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
71 PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
72 LDFLAGS_FINAL += --gc-sections -pie
73 OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .got
74 OBJCOPYFLAGS += -j .u_boot_list -j .rel.dyn -j .padding