early_32.c (c39f2d9db0fd81ea20bb5cce9b3f082ca63753e2) early_32.c (2b0e86cc5de6dabadc2d64cefa429fc227c8a756)
1// SPDX-License-Identifier: GPL-2.0
2
3/*
4 * Early init before relocation
5 */
6
7#include <linux/init.h>
8#include <linux/kernel.h>

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14 * We're called here very early in the boot.
15 *
16 * Note that the kernel may be running at an address which is different
17 * from the address that it was linked at, so we must use RELOC/PTRRELOC
18 * to access static data (including strings). -- paulus
19 */
20notrace unsigned long __init early_init(unsigned long dt_ptr)
21{
1// SPDX-License-Identifier: GPL-2.0
2
3/*
4 * Early init before relocation
5 */
6
7#include <linux/init.h>
8#include <linux/kernel.h>

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14 * We're called here very early in the boot.
15 *
16 * Note that the kernel may be running at an address which is different
17 * from the address that it was linked at, so we must use RELOC/PTRRELOC
18 * to access static data (including strings). -- paulus
19 */
20notrace unsigned long __init early_init(unsigned long dt_ptr)
21{
22 unsigned long offset = reloc_offset();
22 unsigned long kva, offset = reloc_offset();
23
23
24 kva = *PTRRELOC(&kernstart_virt_addr);
25
24 /* First zero the BSS */
26 /* First zero the BSS */
25 memset(PTRRELOC(&__bss_start), 0, __bss_stop - __bss_start);
27 if (kva == KERNELBASE)
28 memset(PTRRELOC(&__bss_start), 0, __bss_stop - __bss_start);
26
27 /*
28 * Identify the CPU type and fix up code sections
29 * that depend on which cpu we have.
30 */
31 identify_cpu(offset, mfspr(SPRN_PVR));
32
33 apply_feature_fixups();
34
29
30 /*
31 * Identify the CPU type and fix up code sections
32 * that depend on which cpu we have.
33 */
34 identify_cpu(offset, mfspr(SPRN_PVR));
35
36 apply_feature_fixups();
37
35 return KERNELBASE + offset;
38 return kva + offset;
36}
39}