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Commit | Line | Data |
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c51e3a41 | 1 | #ifdef CONFIG_PPC64 |
e8222502 | 2 | #define PROVIDE32(x) PROVIDE(__unused__##x) |
c51e3a41 | 3 | #else |
e8222502 | 4 | #define PROVIDE32(x) PROVIDE(x) |
c51e3a41 | 5 | #endif |
4846c5de | 6 | #include <asm/page.h> |
14cf11af | 7 | #include <asm-generic/vmlinux.lds.h> |
bd67fcf9 | 8 | #include <asm/cache.h> |
62bef288 | 9 | #include <asm/thread_info.h> |
14cf11af | 10 | |
e19e4ab4 ME |
11 | ENTRY(_stext) |
12 | ||
c69cccc9 SB |
13 | PHDRS { |
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 | ||
cabb5587 SR |
32 | #ifdef CONFIG_PPC64 |
33 | OUTPUT_ARCH(powerpc:common64) | |
34 | jiffies = jiffies_64; | |
35 | #else | |
14cf11af PM |
36 | OUTPUT_ARCH(powerpc:common) |
37 | jiffies = jiffies_64 + 4; | |
cabb5587 | 38 | #endif |
14cf11af PM |
39 | SECTIONS |
40 | { | |
e8222502 | 41 | . = KERNELBASE; |
14cf11af | 42 | |
e8222502 BH |
43 | /* |
44 | * Text, read only data and other permanent read-only sections | |
45 | */ | |
46 | ||
57f26649 NP |
47 | _text = .; |
48 | _stext = .; | |
49 | ||
50 | /* | |
51 | * Head text. | |
52 | * This needs to be in its own output section to avoid ld placing | |
53 | * branch trampoline stubs randomly throughout the fixed sections, | |
54 | * which it will do (even if the branch comes from another section) | |
55 | * in order to optimize stub generation. | |
56 | */ | |
57 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { | |
58 | #ifdef CONFIG_PPC64 | |
59 | KEEP(*(.head.text.first_256B)); | |
60 | #ifdef CONFIG_PPC_BOOK3E | |
61 | # define END_FIXED 0x100 | |
62 | #else | |
63 | KEEP(*(.head.text.real_vectors)); | |
64 | *(.head.text.real_trampolines); | |
65 | KEEP(*(.head.text.virt_vectors)); | |
66 | *(.head.text.virt_trampolines); | |
67 | # if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) | |
68 | KEEP(*(.head.data.fwnmi_page)); | |
69 | # define END_FIXED 0x8000 | |
70 | # else | |
71 | # define END_FIXED 0x7000 | |
72 | # endif | |
73 | #endif | |
74 | ASSERT((. == END_FIXED), "vmlinux.lds.S: fixed section overflow error"); | |
75 | #else /* !CONFIG_PPC64 */ | |
76 | HEAD_TEXT | |
77 | #endif | |
78 | } :kernel | |
79 | ||
80 | /* | |
81 | * If the build dies here, it's likely code in head_64.S is referencing | |
82 | * labels it can't reach, and the linker inserting stubs without the | |
83 | * assembler's knowledge. To debug, remove the above assert and | |
84 | * rebuild. Look for branch stubs in the fixed section region. | |
85 | * | |
86 | * Linker stub generation could be allowed in "trampoline" | |
87 | * sections if absolutely necessary, but this would require | |
88 | * some rework of the fixed sections. Before resorting to this, | |
89 | * consider references that have sufficient addressing range, | |
90 | * (e.g., hand coded trampolines) so the linker does not have | |
91 | * to add stubs. | |
92 | * | |
93 | * Linker stubs at the top of the main text section are currently not | |
94 | * detected, and will result in a crash at boot due to offsets being | |
95 | * wrong. | |
96 | */ | |
dadc4a1b NP |
97 | #ifdef CONFIG_PPC64 |
98 | /* | |
99 | * BLOCK(0) overrides the default output section alignment because | |
100 | * this needs to start right after .head.text in order for fixed | |
101 | * section placement to work. | |
102 | */ | |
103 | .text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) { | |
104 | #else | |
366234f6 | 105 | .text : AT(ADDR(.text) - LOAD_OFFSET) { |
748a7683 | 106 | ALIGN_FUNCTION(); |
dadc4a1b | 107 | #endif |
13beadd9 TA |
108 | /* careful! __ftr_alt_* sections need to be close to .text */ |
109 | *(.text .fixup __ftr_alt_* .ref.text) | |
e8222502 | 110 | SCHED_TEXT |
6727ad9e | 111 | CPUIDLE_TEXT |
e8222502 BH |
112 | LOCK_TEXT |
113 | KPROBES_TEXT | |
6794c782 | 114 | IRQENTRY_TEXT |
be7635e7 | 115 | SOFTIRQENTRY_TEXT |
7de3b27b ME |
116 | MEM_KEEP(init.text) |
117 | MEM_KEEP(exit.text) | |
14cf11af | 118 | |
e8222502 BH |
119 | #ifdef CONFIG_PPC32 |
120 | *(.got1) | |
121 | __got2_start = .; | |
122 | *(.got2) | |
123 | __got2_end = .; | |
124 | #endif /* CONFIG_PPC32 */ | |
125 | ||
c69cccc9 | 126 | } :kernel |
e8222502 | 127 | |
303996da SR |
128 | . = ALIGN(PAGE_SIZE); |
129 | _etext = .; | |
130 | PROVIDE32 (etext = .); | |
131 | ||
e8222502 BH |
132 | /* Read-only data */ |
133 | RODATA | |
134 | ||
62bef288 | 135 | EXCEPTION_TABLE(0) |
14cf11af | 136 | |
c69cccc9 SB |
137 | NOTES :kernel :notes |
138 | ||
139 | /* The dummy segment contents for the bug workaround mentioned above | |
140 | near PHDRS. */ | |
80c60bf9 | 141 | .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) { |
e16459c6 MM |
142 | LONG(0) |
143 | LONG(0) | |
144 | LONG(0) | |
c69cccc9 | 145 | } :kernel :dummy |
8fb775ee | 146 | |
e8222502 BH |
147 | /* |
148 | * Init sections discarded at runtime | |
149 | */ | |
150 | . = ALIGN(PAGE_SIZE); | |
151 | __init_begin = .; | |
62bef288 | 152 | INIT_TEXT_SECTION(PAGE_SIZE) :kernel |
e8222502 BH |
153 | |
154 | /* .exit.text is discarded at runtime, not link time, | |
155 | * to deal with references from __bug_table | |
156 | */ | |
366234f6 | 157 | .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { |
01ba2bdc SR |
158 | EXIT_TEXT |
159 | } | |
e8222502 | 160 | |
366234f6 | 161 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { |
01ba2bdc | 162 | INIT_DATA |
e8222502 BH |
163 | __vtop_table_begin = .; |
164 | *(.vtop_fixup); | |
165 | __vtop_table_end = .; | |
166 | __ptov_table_begin = .; | |
167 | *(.ptov_fixup); | |
168 | __ptov_table_end = .; | |
169 | } | |
170 | ||
366234f6 | 171 | .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { |
62bef288 | 172 | INIT_SETUP(16) |
e8222502 BH |
173 | } |
174 | ||
366234f6 | 175 | .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) { |
62bef288 TA |
176 | INIT_CALLS |
177 | } | |
e8222502 | 178 | |
366234f6 | 179 | .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { |
62bef288 | 180 | CON_INITCALL |
e8222502 BH |
181 | } |
182 | ||
183 | SECURITY_INIT | |
184 | ||
185 | . = ALIGN(8); | |
366234f6 | 186 | __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { |
cabb5587 SR |
187 | __start___ftr_fixup = .; |
188 | *(__ftr_fixup) | |
189 | __stop___ftr_fixup = .; | |
190 | } | |
2d1b2027 | 191 | . = ALIGN(8); |
7c03d653 BH |
192 | __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { |
193 | __start___mmu_ftr_fixup = .; | |
194 | *(__mmu_ftr_fixup) | |
195 | __stop___mmu_ftr_fixup = .; | |
196 | } | |
197 | . = ALIGN(8); | |
2d1b2027 KG |
198 | __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { |
199 | __start___lwsync_fixup = .; | |
200 | *(__lwsync_fixup) | |
201 | __stop___lwsync_fixup = .; | |
202 | } | |
3f639ee8 SR |
203 | #ifdef CONFIG_PPC64 |
204 | . = ALIGN(8); | |
366234f6 | 205 | __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { |
3f639ee8 SR |
206 | __start___fw_ftr_fixup = .; |
207 | *(__fw_ftr_fixup) | |
208 | __stop___fw_ftr_fixup = .; | |
209 | } | |
210 | #endif | |
366234f6 | 211 | .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { |
62bef288 | 212 | INIT_RAM_FS |
e8222502 | 213 | } |
62bef288 | 214 | |
0415b00d | 215 | PERCPU_SECTION(L1_CACHE_BYTES) |
14cf11af | 216 | |
e8222502 | 217 | . = ALIGN(8); |
366234f6 | 218 | .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { |
e8222502 BH |
219 | __machine_desc_start = . ; |
220 | *(.machine.desc) | |
221 | __machine_desc_end = . ; | |
222 | } | |
2a4b9c5a | 223 | #ifdef CONFIG_RELOCATABLE |
549e8152 | 224 | . = ALIGN(8); |
9c5f7d39 SP |
225 | .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) |
226 | { | |
27d11496 | 227 | #ifdef CONFIG_PPC32 |
9c5f7d39 SP |
228 | __dynamic_symtab = .; |
229 | #endif | |
230 | *(.dynsym) | |
231 | } | |
549e8152 PM |
232 | .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } |
233 | .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) | |
234 | { | |
235 | __dynamic_start = .; | |
236 | *(.dynamic) | |
237 | } | |
238 | .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } | |
239 | .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } | |
240 | .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) | |
241 | { | |
242 | __rela_dyn_start = .; | |
243 | *(.rela*) | |
244 | } | |
2a4b9c5a | 245 | #endif |
4c812318 SR |
246 | /* .exit.data is discarded at runtime, not link time, |
247 | * to deal with references from .exit.text | |
248 | */ | |
249 | .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { | |
250 | EXIT_DATA | |
251 | } | |
e8222502 BH |
252 | |
253 | /* freed after init ends here */ | |
254 | . = ALIGN(PAGE_SIZE); | |
255 | __init_end = .; | |
256 | ||
257 | /* | |
258 | * And now the various read/write data | |
259 | */ | |
260 | ||
261 | . = ALIGN(PAGE_SIZE); | |
262 | _sdata = .; | |
14cf11af | 263 | |
cabb5587 | 264 | #ifdef CONFIG_PPC32 |
366234f6 | 265 | .data : AT(ADDR(.data) - LOAD_OFFSET) { |
ca967258 | 266 | DATA_DATA |
e8222502 BH |
267 | *(.sdata) |
268 | *(.got.plt) *(.got) | |
269 | } | |
cabb5587 | 270 | #else |
366234f6 | 271 | .data : AT(ADDR(.data) - LOAD_OFFSET) { |
3ae0aa9f MD |
272 | DATA_DATA |
273 | *(.data.rel*) | |
274 | *(.toc1) | |
e8222502 BH |
275 | *(.branch_lt) |
276 | } | |
14cf11af | 277 | |
366234f6 | 278 | .opd : AT(ADDR(.opd) - LOAD_OFFSET) { |
e8222502 BH |
279 | *(.opd) |
280 | } | |
281 | ||
5e95235c | 282 | . = ALIGN(256); |
366234f6 | 283 | .got : AT(ADDR(.got) - LOAD_OFFSET) { |
e8222502 | 284 | __toc_start = .; |
5ac47f7a AB |
285 | #ifndef CONFIG_RELOCATABLE |
286 | __prom_init_toc_start = .; | |
287 | arch/powerpc/kernel/prom_init.o*(.toc .got) | |
288 | __prom_init_toc_end = .; | |
289 | #endif | |
e8222502 BH |
290 | *(.got) |
291 | *(.toc) | |
292 | } | |
cabb5587 | 293 | #endif |
14cf11af | 294 | |
e8222502 | 295 | /* The initial task and kernel stack */ |
2af7687f | 296 | INIT_TASK_DATA_SECTION(THREAD_SIZE) |
14cf11af | 297 | |
75b13483 | 298 | .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) { |
62bef288 | 299 | PAGE_ALIGNED_DATA(PAGE_SIZE) |
e8222502 | 300 | } |
14cf11af | 301 | |
4af57b78 | 302 | .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) { |
62bef288 | 303 | CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) |
e8222502 | 304 | } |
14cf11af | 305 | |
54cb27a7 | 306 | .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) { |
62bef288 | 307 | READ_MOSTLY_DATA(L1_CACHE_BYTES) |
bd67fcf9 TB |
308 | } |
309 | ||
5be2a213 | 310 | . = ALIGN(PAGE_SIZE); |
366234f6 | 311 | .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { |
62bef288 | 312 | NOSAVE_DATA |
e8222502 | 313 | } |
4a288563 | 314 | |
903444e4 ME |
315 | . = ALIGN(PAGE_SIZE); |
316 | _edata = .; | |
317 | PROVIDE32 (edata = .); | |
318 | ||
e8222502 BH |
319 | /* |
320 | * And finally the bss | |
321 | */ | |
322 | ||
62bef288 | 323 | BSS_SECTION(0, 0, 0) |
14cf11af | 324 | |
e8222502 BH |
325 | . = ALIGN(PAGE_SIZE); |
326 | _end = . ; | |
327 | PROVIDE32 (end = .); | |
023bf6f1 TH |
328 | |
329 | /* Sections to be discarded. */ | |
330 | DISCARDS | |
14cf11af | 331 | } |