// 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)); apply_feature_fixups(); return kva + offset; }