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 _stext = .; /* start of kernel text, includes init code & data */ 61 62 __init_begin = .; 63 HEAD_TEXT_SECTION 64 MLONGCALL_DISCARD(INIT_TEXT_SECTION(8)) 65 66 . = ALIGN(PAGE_SIZE); 67 INIT_DATA_SECTION(PAGE_SIZE) 68 MLONGCALL_DISCARD(EXIT_TEXT_SECTIONS()) 69 .exit.data : 70 { 71 EXIT_DATA 72 } 73 PERCPU_SECTION(8) 74 . = ALIGN(4); 75 .altinstructions : { 76 __alt_instructions = .; 77 *(.altinstructions) 78 __alt_instructions_end = .; 79 } 80 . = ALIGN(HUGEPAGE_SIZE); 81 __init_end = .; 82 /* freed after init ends here */ 83 84 _text = .; /* Text and read-only data */ 85 MLONGCALL_KEEP(INIT_TEXT_SECTION(8)) 86 .text ALIGN(PAGE_SIZE) : { 87 TEXT_TEXT 88 LOCK_TEXT 89 SCHED_TEXT 90 CPUIDLE_TEXT 91 KPROBES_TEXT 92 IRQENTRY_TEXT 93 SOFTIRQENTRY_TEXT 94 *(.text.do_softirq) 95 *(.text.sys_exit) 96 *(.text.do_sigaltstack) 97 *(.text.do_fork) 98 *(.text.div) 99 *($$*) /* millicode routines */ 100 *(.text.*) 101 *(.fixup) 102 *(.lock.text) /* out-of-line lock text */ 103 *(.gnu.warning) 104 } 105 MLONGCALL_KEEP(EXIT_TEXT_SECTIONS()) 106 . = ALIGN(PAGE_SIZE); 107 _etext = .; 108 /* End of text section */ 109 110 /* Start of data section */ 111 _sdata = .; 112 113 /* Architecturally we need to keep __gp below 0x1000000 and thus 114 * in front of RO_DATA() which stores lots of tracepoint 115 * and ftrace symbols. */ 116#ifdef CONFIG_64BIT 117 . = ALIGN(16); 118 /* Linkage tables */ 119 .opd : { 120 __start_opd = .; 121 *(.opd) 122 __end_opd = .; 123 } PROVIDE (__gp = .); 124 .plt : { 125 *(.plt) 126 } 127 .dlt : { 128 *(.dlt) 129 } 130#endif 131 132 RO_DATA(8) 133 134 /* unwind info */ 135 .PARISC.unwind : { 136 __start___unwind = .; 137 *(.PARISC.unwind) 138 __stop___unwind = .; 139 } 140 141 /* writeable */ 142 /* Make sure this is page aligned so 143 * that we can properly leave these 144 * as writable 145 */ 146 . = ALIGN(HUGEPAGE_SIZE); 147 data_start = .; 148 149 /* Data */ 150 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE) 151 152 /* PA-RISC locks requires 16-byte alignment */ 153 . = ALIGN(16); 154 .data..lock_aligned : { 155 *(.data..lock_aligned) 156 } 157 158 /* End of data section */ 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} 187