b24473976b
commit 97ee351b50a49717543533cfb85b4bf9d88c9680 upstream. Recent toolchains force the TOC to be 256 byte aligned. We need to enforce this alignment in the zImage linker script, otherwise pointers to our TOC variables (__toc_start) could be incorrect. If the actual start of the TOC and __toc_start don't have the same value we crash early in the zImage wrapper. Suggested-by: Alan Modra <amodra@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
90 lines
1.3 KiB
ArmAsm
90 lines
1.3 KiB
ArmAsm
#include <asm-generic/vmlinux.lds.h>
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#ifdef CONFIG_PPC64_BOOT_WRAPPER
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OUTPUT_ARCH(powerpc:common64)
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#else
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OUTPUT_ARCH(powerpc:common)
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#endif
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ENTRY(_zimage_start)
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EXTERN(_zimage_start)
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SECTIONS
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{
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.text :
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{
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_start = .;
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*(.text)
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*(.fixup)
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_etext = .;
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}
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. = ALIGN(4096);
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.data :
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{
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*(.rodata*)
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*(.data*)
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*(.sdata*)
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#ifndef CONFIG_PPC64_BOOT_WRAPPER
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*(.got2)
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#endif
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}
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.dynsym : { *(.dynsym) }
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.dynstr : { *(.dynstr) }
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.dynamic :
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{
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__dynamic_start = .;
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*(.dynamic)
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}
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.hash : { *(.hash) }
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.interp : { *(.interp) }
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.rela.dyn :
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{
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#ifdef CONFIG_PPC64_BOOT_WRAPPER
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__rela_dyn_start = .;
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#endif
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*(.rela*)
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}
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. = ALIGN(8);
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.kernel:dtb :
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{
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_dtb_start = .;
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*(.kernel:dtb)
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_dtb_end = .;
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}
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. = ALIGN(4096);
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.kernel:vmlinux.strip :
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{
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_vmlinux_start = .;
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*(.kernel:vmlinux.strip)
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_vmlinux_end = .;
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}
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. = ALIGN(4096);
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.kernel:initrd :
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{
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_initrd_start = .;
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*(.kernel:initrd)
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_initrd_end = .;
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}
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#ifdef CONFIG_PPC64_BOOT_WRAPPER
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. = ALIGN(256);
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.got :
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{
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__toc_start = .;
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*(.got)
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*(.toc)
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}
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#endif
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. = ALIGN(4096);
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.bss :
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{
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_edata = .;
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__bss_start = .;
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*(.sbss)
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*(.bss)
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*(COMMON)
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_end = . ;
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}
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}
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