xref: /linux/arch/openrisc/kernel/vmlinux.lds.S (revision 306ec721d043bbe5e818d59fbb37c28d999b5d8b) 
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * OpenRISC vmlinux.lds.S
4 *
5 * Linux architectural port borrowing liberally from similar works of
6 * others.  All original copyrights apply as per the original source
7 * declaration.
8 *
9 * Modifications for the OpenRISC architecture:
10 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
11 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
12 *
13 * ld script for OpenRISC architecture
14 */
15
16/* TODO
17 *		- clean up __offset & stuff
18 *		- change all 8192 alignment to PAGE !!!
19 *		- recheck if all alignments are really needed
20 */
21
22#  define LOAD_OFFSET  PAGE_OFFSET
23#  define LOAD_BASE    PAGE_OFFSET
24
25#include <asm/page.h>
26#include <asm/cache.h>
27#include <asm/thread_info.h>
28#include <asm-generic/vmlinux.lds.h>
29
30#ifdef __OR1K__
31#define __OUTPUT_FORMAT        "elf32-or1k"
32#else
33#define __OUTPUT_FORMAT        "elf32-or32"
34#endif
35
36OUTPUT_FORMAT(__OUTPUT_FORMAT, __OUTPUT_FORMAT, __OUTPUT_FORMAT)
37jiffies = jiffies_64 + 4;
38
39SECTIONS
40{
41        /* Read-only sections, merged into text segment: */
42        . = LOAD_BASE ;
43
44	_text = .;
45
46	/* _s_kernel_ro must be page aligned */
47	. = ALIGN(PAGE_SIZE);
48	_s_kernel_ro = .;
49
50        .text                   : AT(ADDR(.text) - LOAD_OFFSET)
51	{
52          _stext = .;
53	  TEXT_TEXT
54	  SCHED_TEXT
55	  LOCK_TEXT
56	  KPROBES_TEXT
57	  IRQENTRY_TEXT
58	  SOFTIRQENTRY_TEXT
59	  *(.fixup)
60	  *(.text.__*)
61	  _etext = .;
62	}
63	/* TODO: Check if fixup and text.__* are really necessary
64	 * fixup is definitely necessary
65	 */
66
67	_sdata = .;
68
69	/* Page alignment required for RO_DATA */
70	RO_DATA(PAGE_SIZE)
71	_e_kernel_ro = .;
72
73	/* Whatever comes after _e_kernel_ro had better be page-aligend, too */
74
75	/* 32 here is cacheline size... recheck this */
76	RW_DATA(32, PAGE_SIZE, PAGE_SIZE)
77
78        _edata  =  .;
79
80	EXCEPTION_TABLE(4)
81
82	/* Init code and data */
83	. = ALIGN(PAGE_SIZE);
84	__init_begin = .;
85
86	HEAD_TEXT_SECTION
87
88	/* Page aligned */
89	INIT_TEXT_SECTION(PAGE_SIZE)
90
91	/* Align __setup_start on 16 byte boundary */
92	INIT_DATA_SECTION(16)
93
94	PERCPU_SECTION(L1_CACHE_BYTES)
95
96        __init_end = .;
97
98	BSS_SECTION(0, 0, 0x20)
99
100        _end = .;
101
102	/* Throw in the debugging sections */
103	STABS_DEBUG
104	DWARF_DEBUG
105	ELF_DETAILS
106
107        /* Sections to be discarded -- must be last */
108	DISCARDS
109}
110