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powerpc/32: Move early_init() in a separate file

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In preparation of KASAN, move early_init() into a separate
file in order to allow deactivation of KASAN for that function.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy
2019-04-26 16:23:25 +00:00
committed by Michael Ellerman
parent 069239169a
commit d69ca6bab3
3 changed files with 37 additions and 29 deletions
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28
arch/powerpc/kernel/setup_32.c
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@@ -63,34 +63,6 @@ unsigned int DMA_MODE_WRITE;
EXPORT_SYMBOL(DMA_MODE_READ);
EXPORT_SYMBOL(DMA_MODE_WRITE);
/*
* We're called here very early in the boot.
*
* Note that the kernel may be running at an address which is different
* from the address that it was linked at, so we must use RELOC/PTRRELOC
* to access static data (including strings). -- paulus
*/
notrace unsigned long __init early_init(unsigned long dt_ptr)
{
unsigned long offset = reloc_offset();
/* First zero the BSS -- use memset_io, some platforms don't have
* caches on yet */
memset_io((void __iomem *)PTRRELOC(&__bss_start), 0,
__bss_stop - __bss_start);
/*
* Identify the CPU type and fix up code sections
* that depend on which cpu we have.
*/
identify_cpu(offset, mfspr(SPRN_PVR));
apply_feature_fixups();
return KERNELBASE + offset;
}
/*
* This is run before start_kernel(), the kernel has been relocated
* and we are running with enough of the MMU enabled to have our