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powerpc: Align TOC to 256 bytes 

Recent toolchains force the TOC to be 256 byte aligned. We need
to enforce this alignment in our linker script, otherwise pointers
to our TOC variables (__toc_start, __prom_init_toc_start) could
be incorrect.

If they are bad, we die a few hundred instructions into boot.

Cc: stable@vger.kernel.org
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Anton Blanchard 2015-05-14 14:45:40 +10:00 committed by Michael Ellerman
parent ffb2d78eca
commit 5e95235ccd
1 changed files with 1 additions and 0 deletions
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1
arch/powerpc/kernel/vmlinux.lds.S
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@ -213,6 +213,7 @@ SECTIONS
*(.opd)
}
. = ALIGN(256);
.got : AT(ADDR(.got) - LOAD_OFFSET) {
__toc_start = .;
#ifndef CONFIG_RELOCATABLE