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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
c51e3a41 | 2 | #ifdef CONFIG_PPC64 |
e8222502 | 3 | #define PROVIDE32(x) PROVIDE(__unused__##x) |
c51e3a41 | 4 | #else |
e8222502 | 5 | #define PROVIDE32(x) PROVIDE(x) |
c51e3a41 | 6 | #endif |
4846c5de | 7 | #include <asm/page.h> |
14cf11af | 8 | #include <asm-generic/vmlinux.lds.h> |
bd67fcf9 | 9 | #include <asm/cache.h> |
62bef288 | 10 | #include <asm/thread_info.h> |
14cf11af | 11 | |
95902e6c | 12 | #if defined(CONFIG_STRICT_KERNEL_RWX) && !defined(CONFIG_PPC32) |
d924cc3f BS |
13 | #define STRICT_ALIGN_SIZE (1 << 24) |
14 | #else | |
15 | #define STRICT_ALIGN_SIZE PAGE_SIZE | |
16 | #endif | |
17 | ||
e19e4ab4 ME |
18 | ENTRY(_stext) |
19 | ||
c69cccc9 SB |
20 | PHDRS { |
21 | kernel PT_LOAD FLAGS(7); /* RWX */ | |
22 | notes PT_NOTE FLAGS(0); | |
23 | dummy PT_NOTE FLAGS(0); | |
24 | ||
25 | /* binutils < 2.18 has a bug that makes it misbehave when taking an | |
26 | ELF file with all segments at load address 0 as input. This | |
27 | happens when running "strip" on vmlinux, because of the AT() magic | |
28 | in this linker script. People using GCC >= 4.2 won't run into | |
29 | this problem, because the "build-id" support will put some data | |
30 | into the "notes" segment (at a non-zero load address). | |
31 | ||
32 | To work around this, we force some data into both the "dummy" | |
33 | segment and the kernel segment, so the dummy segment will get a | |
34 | non-zero load address. It's not enough to always create the | |
35 | "notes" segment, since if nothing gets assigned to it, its load | |
36 | address will be zero. */ | |
37 | } | |
38 | ||
cabb5587 SR |
39 | #ifdef CONFIG_PPC64 |
40 | OUTPUT_ARCH(powerpc:common64) | |
41 | jiffies = jiffies_64; | |
42 | #else | |
14cf11af PM |
43 | OUTPUT_ARCH(powerpc:common) |
44 | jiffies = jiffies_64 + 4; | |
cabb5587 | 45 | #endif |
14cf11af PM |
46 | SECTIONS |
47 | { | |
e8222502 | 48 | . = KERNELBASE; |
14cf11af | 49 | |
e8222502 BH |
50 | /* |
51 | * Text, read only data and other permanent read-only sections | |
52 | */ | |
53 | ||
57f26649 NP |
54 | _text = .; |
55 | _stext = .; | |
56 | ||
57 | /* | |
58 | * Head text. | |
59 | * This needs to be in its own output section to avoid ld placing | |
60 | * branch trampoline stubs randomly throughout the fixed sections, | |
61 | * which it will do (even if the branch comes from another section) | |
62 | * in order to optimize stub generation. | |
63 | */ | |
64 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { | |
65 | #ifdef CONFIG_PPC64 | |
66 | KEEP(*(.head.text.first_256B)); | |
67 | #ifdef CONFIG_PPC_BOOK3E | |
57f26649 NP |
68 | #else |
69 | KEEP(*(.head.text.real_vectors)); | |
70 | *(.head.text.real_trampolines); | |
71 | KEEP(*(.head.text.virt_vectors)); | |
72 | *(.head.text.virt_trampolines); | |
73 | # if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) | |
74 | KEEP(*(.head.data.fwnmi_page)); | |
57f26649 NP |
75 | # endif |
76 | #endif | |
57f26649 NP |
77 | #else /* !CONFIG_PPC64 */ |
78 | HEAD_TEXT | |
79 | #endif | |
80 | } :kernel | |
81 | ||
7aa5b018 NR |
82 | __head_end = .; |
83 | ||
dadc4a1b NP |
84 | #ifdef CONFIG_PPC64 |
85 | /* | |
86 | * BLOCK(0) overrides the default output section alignment because | |
87 | * this needs to start right after .head.text in order for fixed | |
88 | * section placement to work. | |
89 | */ | |
90 | .text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) { | |
951eedeb NP |
91 | #ifdef CONFIG_LD_HEAD_STUB_CATCH |
92 | *(.linker_stub_catch); | |
93 | . = . ; | |
94 | #endif | |
95 | ||
dadc4a1b | 96 | #else |
366234f6 | 97 | .text : AT(ADDR(.text) - LOAD_OFFSET) { |
748a7683 | 98 | ALIGN_FUNCTION(); |
dadc4a1b | 99 | #endif |
13beadd9 | 100 | /* careful! __ftr_alt_* sections need to be close to .text */ |
83a092cf | 101 | *(.text.hot .text .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text); |
e8222502 | 102 | SCHED_TEXT |
6727ad9e | 103 | CPUIDLE_TEXT |
e8222502 BH |
104 | LOCK_TEXT |
105 | KPROBES_TEXT | |
6794c782 | 106 | IRQENTRY_TEXT |
be7635e7 | 107 | SOFTIRQENTRY_TEXT |
e8c68825 NP |
108 | /* |
109 | * -Os builds call FP save/restore functions. The powerpc64 | |
110 | * linker generates those on demand in the .sfpr section. | |
111 | * .sfpr gets placed at the beginning of a group of input | |
112 | * sections, which can break start-of-text offset if it is | |
113 | * included with the main text sections, so put it by itself. | |
114 | */ | |
115 | *(.sfpr); | |
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 | 132 | /* Read-only data */ |
d924cc3f | 133 | RO_DATA(PAGE_SIZE) |
e8222502 | 134 | |
aa8a5e00 ME |
135 | #ifdef CONFIG_PPC64 |
136 | . = ALIGN(8); | |
137 | __rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) { | |
138 | __start___rfi_flush_fixup = .; | |
139 | *(__rfi_flush_fixup) | |
140 | __stop___rfi_flush_fixup = .; | |
141 | } | |
142 | #endif | |
143 | ||
62bef288 | 144 | EXCEPTION_TABLE(0) |
14cf11af | 145 | |
c69cccc9 SB |
146 | NOTES :kernel :notes |
147 | ||
148 | /* The dummy segment contents for the bug workaround mentioned above | |
149 | near PHDRS. */ | |
80c60bf9 | 150 | .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) { |
e16459c6 MM |
151 | LONG(0) |
152 | LONG(0) | |
153 | LONG(0) | |
c69cccc9 | 154 | } :kernel :dummy |
8fb775ee | 155 | |
e8222502 BH |
156 | /* |
157 | * Init sections discarded at runtime | |
158 | */ | |
d924cc3f | 159 | . = ALIGN(STRICT_ALIGN_SIZE); |
e8222502 | 160 | __init_begin = .; |
62bef288 | 161 | INIT_TEXT_SECTION(PAGE_SIZE) :kernel |
e8222502 BH |
162 | |
163 | /* .exit.text is discarded at runtime, not link time, | |
164 | * to deal with references from __bug_table | |
165 | */ | |
366234f6 | 166 | .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { |
01ba2bdc SR |
167 | EXIT_TEXT |
168 | } | |
e8222502 | 169 | |
366234f6 | 170 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { |
01ba2bdc | 171 | INIT_DATA |
e8222502 BH |
172 | __vtop_table_begin = .; |
173 | *(.vtop_fixup); | |
174 | __vtop_table_end = .; | |
175 | __ptov_table_begin = .; | |
176 | *(.ptov_fixup); | |
177 | __ptov_table_end = .; | |
178 | } | |
179 | ||
366234f6 | 180 | .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { |
62bef288 | 181 | INIT_SETUP(16) |
e8222502 BH |
182 | } |
183 | ||
366234f6 | 184 | .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) { |
62bef288 TA |
185 | INIT_CALLS |
186 | } | |
e8222502 | 187 | |
366234f6 | 188 | .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { |
62bef288 | 189 | CON_INITCALL |
e8222502 BH |
190 | } |
191 | ||
192 | SECURITY_INIT | |
193 | ||
194 | . = ALIGN(8); | |
366234f6 | 195 | __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { |
cabb5587 SR |
196 | __start___ftr_fixup = .; |
197 | *(__ftr_fixup) | |
198 | __stop___ftr_fixup = .; | |
199 | } | |
2d1b2027 | 200 | . = ALIGN(8); |
7c03d653 BH |
201 | __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { |
202 | __start___mmu_ftr_fixup = .; | |
203 | *(__mmu_ftr_fixup) | |
204 | __stop___mmu_ftr_fixup = .; | |
205 | } | |
206 | . = ALIGN(8); | |
2d1b2027 KG |
207 | __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { |
208 | __start___lwsync_fixup = .; | |
209 | *(__lwsync_fixup) | |
210 | __stop___lwsync_fixup = .; | |
211 | } | |
3f639ee8 SR |
212 | #ifdef CONFIG_PPC64 |
213 | . = ALIGN(8); | |
366234f6 | 214 | __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { |
3f639ee8 SR |
215 | __start___fw_ftr_fixup = .; |
216 | *(__fw_ftr_fixup) | |
217 | __stop___fw_ftr_fixup = .; | |
218 | } | |
219 | #endif | |
366234f6 | 220 | .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { |
62bef288 | 221 | INIT_RAM_FS |
e8222502 | 222 | } |
62bef288 | 223 | |
0415b00d | 224 | PERCPU_SECTION(L1_CACHE_BYTES) |
14cf11af | 225 | |
e8222502 | 226 | . = ALIGN(8); |
366234f6 | 227 | .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { |
e8222502 BH |
228 | __machine_desc_start = . ; |
229 | *(.machine.desc) | |
230 | __machine_desc_end = . ; | |
231 | } | |
2a4b9c5a | 232 | #ifdef CONFIG_RELOCATABLE |
549e8152 | 233 | . = ALIGN(8); |
9c5f7d39 SP |
234 | .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) |
235 | { | |
27d11496 | 236 | #ifdef CONFIG_PPC32 |
9c5f7d39 SP |
237 | __dynamic_symtab = .; |
238 | #endif | |
239 | *(.dynsym) | |
240 | } | |
549e8152 PM |
241 | .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } |
242 | .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) | |
243 | { | |
244 | __dynamic_start = .; | |
245 | *(.dynamic) | |
246 | } | |
247 | .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } | |
248 | .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } | |
249 | .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) | |
250 | { | |
251 | __rela_dyn_start = .; | |
252 | *(.rela*) | |
253 | } | |
2a4b9c5a | 254 | #endif |
4c812318 SR |
255 | /* .exit.data is discarded at runtime, not link time, |
256 | * to deal with references from .exit.text | |
257 | */ | |
258 | .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { | |
259 | EXIT_DATA | |
260 | } | |
e8222502 BH |
261 | |
262 | /* freed after init ends here */ | |
263 | . = ALIGN(PAGE_SIZE); | |
264 | __init_end = .; | |
265 | ||
266 | /* | |
267 | * And now the various read/write data | |
268 | */ | |
269 | ||
270 | . = ALIGN(PAGE_SIZE); | |
271 | _sdata = .; | |
14cf11af | 272 | |
cabb5587 | 273 | #ifdef CONFIG_PPC32 |
366234f6 | 274 | .data : AT(ADDR(.data) - LOAD_OFFSET) { |
ca967258 | 275 | DATA_DATA |
e8222502 | 276 | *(.sdata) |
83a092cf | 277 | *(.sdata2) |
e8222502 | 278 | *(.got.plt) *(.got) |
83a092cf | 279 | *(.plt) |
e8222502 | 280 | } |
cabb5587 | 281 | #else |
366234f6 | 282 | .data : AT(ADDR(.data) - LOAD_OFFSET) { |
3ae0aa9f MD |
283 | DATA_DATA |
284 | *(.data.rel*) | |
285 | *(.toc1) | |
e8222502 BH |
286 | *(.branch_lt) |
287 | } | |
14cf11af | 288 | |
366234f6 | 289 | .opd : AT(ADDR(.opd) - LOAD_OFFSET) { |
e8222502 BH |
290 | *(.opd) |
291 | } | |
292 | ||
5e95235c | 293 | . = ALIGN(256); |
366234f6 | 294 | .got : AT(ADDR(.got) - LOAD_OFFSET) { |
e8222502 | 295 | __toc_start = .; |
5ac47f7a AB |
296 | #ifndef CONFIG_RELOCATABLE |
297 | __prom_init_toc_start = .; | |
298 | arch/powerpc/kernel/prom_init.o*(.toc .got) | |
299 | __prom_init_toc_end = .; | |
300 | #endif | |
e8222502 BH |
301 | *(.got) |
302 | *(.toc) | |
303 | } | |
cabb5587 | 304 | #endif |
14cf11af | 305 | |
e8222502 | 306 | /* The initial task and kernel stack */ |
2af7687f | 307 | INIT_TASK_DATA_SECTION(THREAD_SIZE) |
14cf11af | 308 | |
75b13483 | 309 | .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) { |
62bef288 | 310 | PAGE_ALIGNED_DATA(PAGE_SIZE) |
e8222502 | 311 | } |
14cf11af | 312 | |
4af57b78 | 313 | .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) { |
62bef288 | 314 | CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) |
e8222502 | 315 | } |
14cf11af | 316 | |
54cb27a7 | 317 | .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) { |
62bef288 | 318 | READ_MOSTLY_DATA(L1_CACHE_BYTES) |
bd67fcf9 TB |
319 | } |
320 | ||
5be2a213 | 321 | . = ALIGN(PAGE_SIZE); |
366234f6 | 322 | .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { |
62bef288 | 323 | NOSAVE_DATA |
e8222502 | 324 | } |
4a288563 | 325 | |
b5effd38 PZ |
326 | BUG_TABLE |
327 | ||
903444e4 ME |
328 | . = ALIGN(PAGE_SIZE); |
329 | _edata = .; | |
330 | PROVIDE32 (edata = .); | |
331 | ||
e8222502 BH |
332 | /* |
333 | * And finally the bss | |
334 | */ | |
335 | ||
62bef288 | 336 | BSS_SECTION(0, 0, 0) |
14cf11af | 337 | |
e8222502 BH |
338 | . = ALIGN(PAGE_SIZE); |
339 | _end = . ; | |
340 | PROVIDE32 (end = .); | |
023bf6f1 | 341 | |
83a092cf NP |
342 | STABS_DEBUG |
343 | ||
344 | DWARF_DEBUG | |
345 | ||
023bf6f1 | 346 | DISCARDS |
83a092cf NP |
347 | /DISCARD/ : { |
348 | *(*.EMB.apuinfo) | |
349 | *(.glink .iplt .plt .rela* .comment) | |
350 | *(.gnu.version*) | |
351 | *(.gnu.attributes) | |
352 | *(.eh_frame) | |
353 | } | |
14cf11af | 354 | } |