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#define RO_EXCEPTION_TABLE_ALIGN	8
 23
 24#include <asm-generic/vmlinux.lds.h>
 25
 26/* needed for the processor specific cache alignment size */	
 27#include <asm/cache.h>
 28#include <asm/page.h>
 29#include <asm/asm-offsets.h>
 30#include <asm/thread_info.h>
 31	
 32/* ld script to make hppa Linux kernel */
 33#ifndef CONFIG_64BIT
 34OUTPUT_FORMAT("elf32-hppa-linux")
 35OUTPUT_ARCH(hppa)
 36#else
 37OUTPUT_FORMAT("elf64-hppa-linux")
 38OUTPUT_ARCH(hppa:hppa2.0w)
 39#endif
 40
 41#define EXIT_TEXT_SECTIONS()	.exit.text : { EXIT_TEXT }
 42#if !defined(CONFIG_64BIT) || defined(CONFIG_MLONGCALLS)
 43#define MLONGCALL_KEEP(x)
 44#define MLONGCALL_DISCARD(x)	x
 45#else
 46#define MLONGCALL_KEEP(x)	x
 47#define MLONGCALL_DISCARD(x)
 48#endif
 49
 50ENTRY(parisc_kernel_start)
 51#ifndef CONFIG_64BIT
 52jiffies = jiffies_64 + 4;
 53#else
 54jiffies = jiffies_64;
 55#endif
 56SECTIONS
 57{
 58	. = KERNEL_BINARY_TEXT_START;
 59
 60	__init_begin = .;
 61	HEAD_TEXT_SECTION
 62	MLONGCALL_DISCARD(INIT_TEXT_SECTION(8))
 63
 64	. = ALIGN(PAGE_SIZE);
 65	INIT_DATA_SECTION(PAGE_SIZE)
 66	MLONGCALL_DISCARD(EXIT_TEXT_SECTIONS())
 67	.exit.data :
 68	{
 69		EXIT_DATA
 70	}
 71	PERCPU_SECTION(8)
 72	. = ALIGN(4);
 73	.altinstructions : {
 74		__alt_instructions = .;
 75		*(.altinstructions)
 76		__alt_instructions_end = .;
 77	}
 78	. = ALIGN(HUGEPAGE_SIZE);
 79	__init_end = .;
 80	/* freed after init ends here */
 81
 82	_text = .;		/* Text and read-only data */
 83	_stext = .;
 84	MLONGCALL_KEEP(INIT_TEXT_SECTION(8))
 85	.text ALIGN(PAGE_SIZE) : {
 86		TEXT_TEXT
 87		LOCK_TEXT
 88		SCHED_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() 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(PAGE_SIZE)
131
132	/* unwind info */
133	. = ALIGN(4);
134	.PARISC.unwind : {
135		__start___unwind = .;
136		*(.PARISC.unwind)
137		__stop___unwind = .;
138	}
139
140	/* writeable */
141	/* Make sure this is page aligned so
142	 * that we can properly leave these
143	 * as writable
144	 */
145	. = ALIGN(HUGEPAGE_SIZE);
146	data_start = .;
147
148	/* Data */
149	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE)
150
151	/* PA-RISC locks requires 16-byte alignment */
152	. = ALIGN(16);
153	.data..lock_aligned : {
154		*(.data..lock_aligned)
155	}
156
157	/* End of data section */
158	. = ALIGN(PAGE_SIZE);
159	_edata = .;
160
161	/* BSS */
162	BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE)
163
164	. = ALIGN(HUGEPAGE_SIZE);
165	_end = . ;
166
167	STABS_DEBUG
168	ELF_DETAILS
169	.note 0 : { *(.note) }
170
171	/* Sections to be discarded */
172	DISCARDS
173	/DISCARD/ : {
174#ifdef CONFIG_64BIT
175		/* temporary hack until binutils is fixed to not emit these
176	 	 * for static binaries
177		 */
178		*(.interp)
179		*(.dynsym)
180		*(.dynstr)
181		*(.dynamic)
182		*(.hash)
183		*(.gnu.hash)
184#endif
185	}
186}