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(8) 131 132 /* unwind info */ 133 .PARISC.unwind : { 134 __start___unwind = .; 135 *(.PARISC.unwind) 136 __stop___unwind = .; 137 } 138 139 /* writeable */ 140 /* Make sure this is page aligned so 141 * that we can properly leave these 142 * as writable 143 */ 144 . = ALIGN(HUGEPAGE_SIZE); 145 data_start = .; 146 147 /* Data */ 148 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE) 149 150 /* PA-RISC locks requires 16-byte alignment */ 151 . = ALIGN(16); 152 .data..lock_aligned : { 153 *(.data..lock_aligned) 154 } 155 156 /* End of data section */ 157 . = ALIGN(PAGE_SIZE); 158 _edata = .; 159 160 /* BSS */ 161 BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE) 162 163 . = ALIGN(HUGEPAGE_SIZE); 164 _end = . ; 165 166 STABS_DEBUG 167 ELF_DETAILS 168 .note 0 : { *(.note) } 169 170 /* Sections to be discarded */ 171 DISCARDS 172 /DISCARD/ : { 173#ifdef CONFIG_64BIT 174 /* temporary hack until binutils is fixed to not emit these 175 * for static binaries 176 */ 177 *(.interp) 178 *(.dynsym) 179 *(.dynstr) 180 *(.dynamic) 181 *(.hash) 182 *(.gnu.hash) 183#endif 184 } 185} 186