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https://github.com/brain-hackers/u-boot-brain
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9630146411
Currently the size of the relocation table will be shrunk to the actual size needed. Although this gives a maximal space saving, it messes up the _end symbol. This breaks features like appended DTBs because the _end symbol doesn't point to the real end of the U-Boot binary. Remove the size shrinking and make the size of the relocation table fixed but configurable. This follows the Linux approach and the user can adjust the size to his needs. Also rename the relocation table section from .rel to .data.reloc to follow the Linux approach and to avoid ambiguities with the .rel.* sections added by the linker. Reported-by: Lars Povlsen <lars.povlsen@microsemi.com> Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
68 lines
1.9 KiB
Makefile
68 lines
1.9 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0+
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#
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# (C) Copyright 2003
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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ifdef CONFIG_SYS_BIG_ENDIAN
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32bit-emul := elf32btsmip
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64bit-emul := elf64btsmip
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32bit-bfd := elf32-tradbigmips
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64bit-bfd := elf64-tradbigmips
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PLATFORM_CPPFLAGS += -EB
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PLATFORM_LDFLAGS += -EB
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endif
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ifdef CONFIG_SYS_LITTLE_ENDIAN
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32bit-emul := elf32ltsmip
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64bit-emul := elf64ltsmip
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32bit-bfd := elf32-tradlittlemips
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64bit-bfd := elf64-tradlittlemips
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PLATFORM_CPPFLAGS += -EL
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PLATFORM_LDFLAGS += -EL
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endif
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ifdef CONFIG_32BIT
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PLATFORM_CPPFLAGS += -mabi=32
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PLATFORM_LDFLAGS += -m $(32bit-emul)
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OBJCOPYFLAGS += -O $(32bit-bfd)
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endif
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ifdef CONFIG_64BIT
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PLATFORM_CPPFLAGS += -mabi=64
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PLATFORM_LDFLAGS += -m$(64bit-emul)
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OBJCOPYFLAGS += -O $(64bit-bfd)
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endif
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PLATFORM_CPPFLAGS += -D__MIPS__
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PLATFORM_ELFENTRY = "__start"
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PLATFORM_ELFFLAGS += -B mips $(OBJCOPYFLAGS)
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#
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# From Linux arch/mips/Makefile
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#
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# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
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# code since it only slows down the whole thing. At some point we might make
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# use of global pointer optimizations but their use of $28 conflicts with
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# the current pointer optimization.
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#
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# The DECStation requires an ECOFF kernel for remote booting, other MIPS
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# machines may also. Since BFD is incredibly buggy with respect to
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# crossformat linking we rely on the elf2ecoff tool for format conversion.
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#
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# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
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# cflags-y += -msoft-float
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# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
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# MODFLAGS += -mlong-calls
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#
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ifndef CONFIG_SPL_BUILD
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OBJCOPYFLAGS += -j .data.reloc -j .dtb.init.rodata
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LDFLAGS_FINAL += --emit-relocs
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endif
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PLATFORM_CPPFLAGS += -G 0 -mno-abicalls -fno-pic
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PLATFORM_CPPFLAGS += -msoft-float
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PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
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PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
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LDFLAGS_FINAL += --gc-sections
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OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list
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