1#ifdef CONFIG_PPC64 2#define PROVIDE32(x) PROVIDE(__unused__##x) 3#else 4#define PROVIDE32(x) PROVIDE(x) 5#endif 6#include <asm/page.h> 7#include <asm-generic/vmlinux.lds.h> 8#include <asm/cache.h> 9#include <asm/thread_info.h> 10 11ENTRY(_stext) 12 13PHDRS { 14 kernel PT_LOAD FLAGS(7); /* RWX */ 15 notes PT_NOTE FLAGS(0); 16 dummy PT_NOTE FLAGS(0); 17 18 /* binutils < 2.18 has a bug that makes it misbehave when taking an 19 ELF file with all segments at load address 0 as input. This 20 happens when running "strip" on vmlinux, because of the AT() magic 21 in this linker script. People using GCC >= 4.2 won't run into 22 this problem, because the "build-id" support will put some data 23 into the "notes" segment (at a non-zero load address). 24 25 To work around this, we force some data into both the "dummy" 26 segment and the kernel segment, so the dummy segment will get a 27 non-zero load address. It's not enough to always create the 28 "notes" segment, since if nothing gets assigned to it, its load 29 address will be zero. */ 30} 31 32#ifdef CONFIG_PPC64 33OUTPUT_ARCH(powerpc:common64) 34jiffies = jiffies_64; 35#else 36OUTPUT_ARCH(powerpc:common) 37jiffies = jiffies_64 + 4; 38#endif 39SECTIONS 40{ 41 . = KERNELBASE; 42 43/* 44 * Text, read only data and other permanent read-only sections 45 */ 46 47 /* Text and gots */ 48 .text : AT(ADDR(.text) - LOAD_OFFSET) { 49 ALIGN_FUNCTION(); 50 HEAD_TEXT 51 _text = .; 52 /* careful! __ftr_alt_* sections need to be close to .text */ 53 *(.text .fixup __ftr_alt_* .ref.text) 54 SCHED_TEXT 55 LOCK_TEXT 56 KPROBES_TEXT 57 IRQENTRY_TEXT 58 SOFTIRQENTRY_TEXT 59 60#ifdef CONFIG_PPC32 61 *(.got1) 62 __got2_start = .; 63 *(.got2) 64 __got2_end = .; 65#endif /* CONFIG_PPC32 */ 66 67 } :kernel 68 69 . = ALIGN(PAGE_SIZE); 70 _etext = .; 71 PROVIDE32 (etext = .); 72 73 /* Read-only data */ 74 RODATA 75 76 EXCEPTION_TABLE(0) 77 78 NOTES :kernel :notes 79 80 /* The dummy segment contents for the bug workaround mentioned above 81 near PHDRS. */ 82 .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) { 83 LONG(0) 84 LONG(0) 85 LONG(0) 86 } :kernel :dummy 87 88/* 89 * Init sections discarded at runtime 90 */ 91 . = ALIGN(PAGE_SIZE); 92 __init_begin = .; 93 INIT_TEXT_SECTION(PAGE_SIZE) :kernel 94 95 /* .exit.text is discarded at runtime, not link time, 96 * to deal with references from __bug_table 97 */ 98 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { 99 EXIT_TEXT 100 } 101 102 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { 103 INIT_DATA 104 __vtop_table_begin = .; 105 *(.vtop_fixup); 106 __vtop_table_end = .; 107 __ptov_table_begin = .; 108 *(.ptov_fixup); 109 __ptov_table_end = .; 110 } 111 112 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { 113 INIT_SETUP(16) 114 } 115 116 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) { 117 INIT_CALLS 118 } 119 120 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { 121 CON_INITCALL 122 } 123 124 SECURITY_INIT 125 126 . = ALIGN(8); 127 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { 128 __start___ftr_fixup = .; 129 *(__ftr_fixup) 130 __stop___ftr_fixup = .; 131 } 132 . = ALIGN(8); 133 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { 134 __start___mmu_ftr_fixup = .; 135 *(__mmu_ftr_fixup) 136 __stop___mmu_ftr_fixup = .; 137 } 138 . = ALIGN(8); 139 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { 140 __start___lwsync_fixup = .; 141 *(__lwsync_fixup) 142 __stop___lwsync_fixup = .; 143 } 144#ifdef CONFIG_PPC64 145 . = ALIGN(8); 146 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { 147 __start___fw_ftr_fixup = .; 148 *(__fw_ftr_fixup) 149 __stop___fw_ftr_fixup = .; 150 } 151#endif 152 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { 153 INIT_RAM_FS 154 } 155 156 PERCPU_SECTION(L1_CACHE_BYTES) 157 158 . = ALIGN(8); 159 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { 160 __machine_desc_start = . ; 161 *(.machine.desc) 162 __machine_desc_end = . ; 163 } 164#ifdef CONFIG_RELOCATABLE 165 . = ALIGN(8); 166 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) 167 { 168#ifdef CONFIG_RELOCATABLE_PPC32 169 __dynamic_symtab = .; 170#endif 171 *(.dynsym) 172 } 173 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } 174 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) 175 { 176 __dynamic_start = .; 177 *(.dynamic) 178 } 179 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } 180 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } 181 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) 182 { 183 __rela_dyn_start = .; 184 *(.rela*) 185 } 186#endif 187 /* .exit.data is discarded at runtime, not link time, 188 * to deal with references from .exit.text 189 */ 190 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { 191 EXIT_DATA 192 } 193 194 /* freed after init ends here */ 195 . = ALIGN(PAGE_SIZE); 196 __init_end = .; 197 198/* 199 * And now the various read/write data 200 */ 201 202 . = ALIGN(PAGE_SIZE); 203 _sdata = .; 204 205#ifdef CONFIG_PPC32 206 .data : AT(ADDR(.data) - LOAD_OFFSET) { 207 DATA_DATA 208 *(.sdata) 209 *(.got.plt) *(.got) 210 } 211#else 212 .data : AT(ADDR(.data) - LOAD_OFFSET) { 213 DATA_DATA 214 *(.data.rel*) 215 *(.toc1) 216 *(.branch_lt) 217 } 218 219 .opd : AT(ADDR(.opd) - LOAD_OFFSET) { 220 *(.opd) 221 } 222 223 . = ALIGN(256); 224 .got : AT(ADDR(.got) - LOAD_OFFSET) { 225 __toc_start = .; 226#ifndef CONFIG_RELOCATABLE 227 __prom_init_toc_start = .; 228 arch/powerpc/kernel/prom_init.o*(.toc .got) 229 __prom_init_toc_end = .; 230#endif 231 *(.got) 232 *(.toc) 233 } 234#endif 235 236 /* The initial task and kernel stack */ 237 INIT_TASK_DATA_SECTION(THREAD_SIZE) 238 239 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) { 240 PAGE_ALIGNED_DATA(PAGE_SIZE) 241 } 242 243 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) { 244 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) 245 } 246 247 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) { 248 READ_MOSTLY_DATA(L1_CACHE_BYTES) 249 } 250 251 . = ALIGN(PAGE_SIZE); 252 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { 253 NOSAVE_DATA 254 } 255 256 . = ALIGN(PAGE_SIZE); 257 _edata = .; 258 PROVIDE32 (edata = .); 259 260/* 261 * And finally the bss 262 */ 263 264 BSS_SECTION(0, 0, 0) 265 266 . = ALIGN(PAGE_SIZE); 267 _end = . ; 268 PROVIDE32 (end = .); 269 270 /* Sections to be discarded. */ 271 DISCARDS 272} 273