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 . = 0; 42 reloc_start = .; 43 44 . = KERNELBASE; 45 46/* 47 * Text, read only data and other permanent read-only sections 48 */ 49 50 /* Text and gots */ 51 .text : AT(ADDR(.text) - LOAD_OFFSET) { 52 ALIGN_FUNCTION(); 53 HEAD_TEXT 54 _text = .; 55 /* careful! __ftr_alt_* sections need to be close to .text */ 56 *(.text .fixup __ftr_alt_* .ref.text) 57 SCHED_TEXT 58 LOCK_TEXT 59 KPROBES_TEXT 60 IRQENTRY_TEXT 61 62#ifdef CONFIG_PPC32 63 *(.got1) 64 __got2_start = .; 65 *(.got2) 66 __got2_end = .; 67#endif /* CONFIG_PPC32 */ 68 69 } :kernel 70 71 . = ALIGN(PAGE_SIZE); 72 _etext = .; 73 PROVIDE32 (etext = .); 74 75 /* Read-only data */ 76 RODATA 77 78 EXCEPTION_TABLE(0) 79 80 NOTES :kernel :notes 81 82 /* The dummy segment contents for the bug workaround mentioned above 83 near PHDRS. */ 84 .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) { 85 LONG(0) 86 LONG(0) 87 LONG(0) 88 } :kernel :dummy 89 90/* 91 * Init sections discarded at runtime 92 */ 93 . = ALIGN(PAGE_SIZE); 94 __init_begin = .; 95 INIT_TEXT_SECTION(PAGE_SIZE) :kernel 96 97 /* .exit.text is discarded at runtime, not link time, 98 * to deal with references from __bug_table 99 */ 100 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { 101 EXIT_TEXT 102 } 103 104 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { 105 INIT_DATA 106 __vtop_table_begin = .; 107 *(.vtop_fixup); 108 __vtop_table_end = .; 109 __ptov_table_begin = .; 110 *(.ptov_fixup); 111 __ptov_table_end = .; 112 } 113 114 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { 115 INIT_SETUP(16) 116 } 117 118 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) { 119 INIT_CALLS 120 } 121 122 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { 123 CON_INITCALL 124 } 125 126 SECURITY_INIT 127 128 . = ALIGN(8); 129 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { 130 __start___ftr_fixup = .; 131 *(__ftr_fixup) 132 __stop___ftr_fixup = .; 133 } 134 . = ALIGN(8); 135 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { 136 __start___mmu_ftr_fixup = .; 137 *(__mmu_ftr_fixup) 138 __stop___mmu_ftr_fixup = .; 139 } 140 . = ALIGN(8); 141 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { 142 __start___lwsync_fixup = .; 143 *(__lwsync_fixup) 144 __stop___lwsync_fixup = .; 145 } 146#ifdef CONFIG_PPC64 147 . = ALIGN(8); 148 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { 149 __start___fw_ftr_fixup = .; 150 *(__fw_ftr_fixup) 151 __stop___fw_ftr_fixup = .; 152 } 153#endif 154 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { 155 INIT_RAM_FS 156 } 157 158 PERCPU_SECTION(L1_CACHE_BYTES) 159 160 . = ALIGN(8); 161 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { 162 __machine_desc_start = . ; 163 *(.machine.desc) 164 __machine_desc_end = . ; 165 } 166#ifdef CONFIG_RELOCATABLE 167 . = ALIGN(8); 168 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) 169 { 170#ifdef CONFIG_RELOCATABLE_PPC32 171 __dynamic_symtab = .; 172#endif 173 *(.dynsym) 174 } 175 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } 176 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) 177 { 178 __dynamic_start = .; 179 *(.dynamic) 180 } 181 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } 182 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } 183 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) 184 { 185 __rela_dyn_start = .; 186 *(.rela*) 187 } 188#endif 189 190 /* freed after init ends here */ 191 . = ALIGN(PAGE_SIZE); 192 __init_end = .; 193 194/* 195 * And now the various read/write data 196 */ 197 198 . = ALIGN(PAGE_SIZE); 199 _sdata = .; 200 201#ifdef CONFIG_PPC32 202 .data : AT(ADDR(.data) - LOAD_OFFSET) { 203 DATA_DATA 204 *(.sdata) 205 *(.got.plt) *(.got) 206 } 207#else 208 .data : AT(ADDR(.data) - LOAD_OFFSET) { 209 DATA_DATA 210 *(.data.rel*) 211 *(.toc1) 212 *(.branch_lt) 213 } 214 215 .opd : AT(ADDR(.opd) - LOAD_OFFSET) { 216 *(.opd) 217 } 218 219 .got : AT(ADDR(.got) - LOAD_OFFSET) { 220 __toc_start = .; 221#ifndef CONFIG_RELOCATABLE 222 __prom_init_toc_start = .; 223 arch/powerpc/kernel/prom_init.o*(.toc .got) 224 __prom_init_toc_end = .; 225#endif 226 *(.got) 227 *(.toc) 228 } 229#endif 230 231 /* The initial task and kernel stack */ 232 INIT_TASK_DATA_SECTION(THREAD_SIZE) 233 234 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) { 235 PAGE_ALIGNED_DATA(PAGE_SIZE) 236 } 237 238 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) { 239 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) 240 } 241 242 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) { 243 READ_MOSTLY_DATA(L1_CACHE_BYTES) 244 } 245 246 . = ALIGN(PAGE_SIZE); 247 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { 248 NOSAVE_DATA 249 } 250 251 . = ALIGN(PAGE_SIZE); 252 _edata = .; 253 PROVIDE32 (edata = .); 254 255/* 256 * And finally the bss 257 */ 258 259 BSS_SECTION(0, 0, 0) 260 261 . = ALIGN(PAGE_SIZE); 262 _end = . ; 263 PROVIDE32 (end = .); 264 265 /* Sections to be discarded. */ 266 DISCARDS 267} 268