1/* SPDX-License-Identifier: GPL-2.0 */
2/*    Kernel link layout for various "sections"
3 *
4 *    Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
5 *    Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
6 *    Copyright (C) 2000 John Marvin <jsm at parisc-linux.org>
7 *    Copyright (C) 2000 Michael Ang <mang with subcarrier.org>
8 *    Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
9 *    Copyright (C) 2003 James Bottomley <jejb with parisc-linux.org>
10 *    Copyright (C) 2006-2013 Helge Deller <deller@gmx.de>
11 */
12
13/*
14 * Put page table entries (swapper_pg_dir) as the first thing in .bss. This
15 * will ensure that it has .bss alignment (PAGE_SIZE).
16 */
17#define BSS_FIRST_SECTIONS	*(.data..vm0.pmd) \
18				*(.data..vm0.pgd) \
19				*(.data..vm0.pte)
20
21#define CC_USING_PATCHABLE_FUNCTION_ENTRY
22
23#include <asm-generic/vmlinux.lds.h>
24
25/* needed for the processor specific cache alignment size */
26#include <asm/cache.h>
27#include <asm/page.h>
28#include <asm/asm-offsets.h>
29#include <asm/thread_info.h>
30
31/* ld script to make hppa Linux kernel */
32#ifndef CONFIG_64BIT
33OUTPUT_FORMAT("elf32-hppa-linux")
34OUTPUT_ARCH(hppa)
35#else
36OUTPUT_FORMAT("elf64-hppa-linux")
37OUTPUT_ARCH(hppa:hppa2.0w)
38#endif
39
40#define EXIT_TEXT_SECTIONS()	.exit.text : { EXIT_TEXT }
41#if !defined(CONFIG_64BIT) || defined(CONFIG_MLONGCALLS)
42#define MLONGCALL_KEEP(x)
43#define MLONGCALL_DISCARD(x)	x
44#else
45#define MLONGCALL_KEEP(x)	x
46#define MLONGCALL_DISCARD(x)
47#endif
48
49ENTRY(parisc_kernel_start)
50#ifndef CONFIG_64BIT
51jiffies = jiffies_64 + 4;
52#else
53jiffies = jiffies_64;
54#endif
55SECTIONS
56{
57	. = KERNEL_BINARY_TEXT_START;
58
59	__init_begin = .;
60	HEAD_TEXT_SECTION
61	MLONGCALL_DISCARD(INIT_TEXT_SECTION(8))
62
63	. = ALIGN(PAGE_SIZE);
64	INIT_DATA_SECTION(PAGE_SIZE)
65	MLONGCALL_DISCARD(EXIT_TEXT_SECTIONS())
66	.exit.data :
67	{
68		EXIT_DATA
69	}
70	PERCPU_SECTION(8)
71	. = ALIGN(4);
72	.altinstructions : {
73		__alt_instructions = .;
74		*(.altinstructions)
75		__alt_instructions_end = .;
76	}
77	. = ALIGN(HUGEPAGE_SIZE);
78	__init_end = .;
79	/* freed after init ends here */
80
81	_text = .;		/* Text and read-only data */
82	_stext = .;
83	MLONGCALL_KEEP(INIT_TEXT_SECTION(8))
84	.text ALIGN(PAGE_SIZE) : {
85		TEXT_TEXT
86		LOCK_TEXT
87		SCHED_TEXT
88		CPUIDLE_TEXT
89		KPROBES_TEXT
90		IRQENTRY_TEXT
91		SOFTIRQENTRY_TEXT
92		*(.text.do_softirq)
93		*(.text.sys_exit)
94		*(.text.do_sigaltstack)
95		*(.text.do_fork)
96		*(.text.div)
97		*($$*)			/* millicode routines */
98		*(.text.*)
99		*(.fixup)
100		*(.lock.text)		/* out-of-line lock text */
101		*(.gnu.warning)
102	}
103	MLONGCALL_KEEP(EXIT_TEXT_SECTIONS())
104	. = ALIGN(PAGE_SIZE);
105	_etext = .;
106	/* End of text section */
107
108	/* Start of data section */
109	_sdata = .;
110
111	/* Architecturally we need to keep __gp below 0x1000000 and thus
112	 * in front of RO_DATA_SECTION() which stores lots of tracepoint
113	 * and ftrace symbols. */
114#ifdef CONFIG_64BIT
115	. = ALIGN(16);
116	/* Linkage tables */
117	.opd : {
118		__start_opd = .;
119		*(.opd)
120		__end_opd = .;
121	} PROVIDE (__gp = .);
122	.plt : {
123		*(.plt)
124	}
125	.dlt : {
126		*(.dlt)
127	}
128#endif
129
130	RO_DATA_SECTION(8)
131
132	/* RO because of BUILDTIME_EXTABLE_SORT */
133	EXCEPTION_TABLE(8)
134	NOTES
135
136	/* unwind info */
137	.PARISC.unwind : {
138		__start___unwind = .;
139		*(.PARISC.unwind)
140		__stop___unwind = .;
141	}
142
143	/* writeable */
144	/* Make sure this is page aligned so
145	 * that we can properly leave these
146	 * as writable
147	 */
148	. = ALIGN(HUGEPAGE_SIZE);
149	data_start = .;
150
151	/* Data */
152	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE)
153
154	/* PA-RISC locks requires 16-byte alignment */
155	. = ALIGN(16);
156	.data..lock_aligned : {
157		*(.data..lock_aligned)
158	}
159
160	/* End of data section */
161	_edata = .;
162
163	/* BSS */
164	BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE)
165
166	. = ALIGN(HUGEPAGE_SIZE);
167	_end = . ;
168
169	STABS_DEBUG
170	.note 0 : { *(.note) }
171
172	/* Sections to be discarded */
173	DISCARDS
174	/DISCARD/ : {
175#ifdef CONFIG_64BIT
176		/* temporary hack until binutils is fixed to not emit these
177	 	 * for static binaries
178		 */
179		*(.interp)
180		*(.dynsym)
181		*(.dynstr)
182		*(.dynamic)
183		*(.hash)
184		*(.gnu.hash)
185#endif
186	}
187}
188