blob: ef2ad49459040dcc7107b38703097a6ff7a068c3 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
* Early init before relocation
#include <linux/init.h>
#include <linux/kernel.h>
#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/asm-prototypes.h>
* 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 kva, offset = reloc_offset();
kva = *PTRRELOC(&kernstart_virt_addr);
/* First zero the BSS */
if (kva == KERNELBASE)
memset(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));
return kva + offset;