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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifdef CONFIG_PPC64
3#define PROVIDE32(x) PROVIDE(__unused__##x)
4#else
5#define PROVIDE32(x) PROVIDE(x)
6#endif
7
8#define BSS_FIRST_SECTIONS *(.bss.prominit)
9#define EMITS_PT_NOTE
10#define RO_EXCEPTION_TABLE_ALIGN 0
11#define RUNTIME_DISCARD_EXIT
12
13#define SOFT_MASK_TABLE(align) \
14 . = ALIGN(align); \
15 __soft_mask_table : AT(ADDR(__soft_mask_table) - LOAD_OFFSET) { \
16 __start___soft_mask_table = .; \
17 KEEP(*(__soft_mask_table)) \
18 __stop___soft_mask_table = .; \
19 }
20
21#define RESTART_TABLE(align) \
22 . = ALIGN(align); \
23 __restart_table : AT(ADDR(__restart_table) - LOAD_OFFSET) { \
24 __start___restart_table = .; \
25 KEEP(*(__restart_table)) \
26 __stop___restart_table = .; \
27 }
28
29#include <asm/page.h>
30#include <asm-generic/vmlinux.lds.h>
31#include <asm/cache.h>
32#include <asm/thread_info.h>
33
34#define STRICT_ALIGN_SIZE (1 << CONFIG_DATA_SHIFT)
35
36#if STRICT_ALIGN_SIZE < PAGE_SIZE
37#error "CONFIG_DATA_SHIFT must be >= PAGE_SHIFT"
38#endif
39
40ENTRY(_stext)
41
42PHDRS {
43 text PT_LOAD FLAGS(7); /* RWX */
44 note PT_NOTE FLAGS(0);
45}
46
47#ifdef CONFIG_PPC64
48OUTPUT_ARCH(powerpc:common64)
49jiffies = jiffies_64;
50#else
51OUTPUT_ARCH(powerpc:common)
52jiffies = jiffies_64 + 4;
53#endif
54SECTIONS
55{
56 . = KERNELBASE;
57
58/*
59 * Text, read only data and other permanent read-only sections
60 */
61
62 _text = .;
63 _stext = .;
64
65 /*
66 * Head text.
67 * This needs to be in its own output section to avoid ld placing
68 * branch trampoline stubs randomly throughout the fixed sections,
69 * which it will do (even if the branch comes from another section)
70 * in order to optimize stub generation.
71 */
72 .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
73#ifdef CONFIG_PPC64
74 KEEP(*(.head.text.first_256B));
75#ifdef CONFIG_PPC_BOOK3E_64
76#else
77 KEEP(*(.head.text.real_vectors));
78 *(.head.text.real_trampolines);
79 KEEP(*(.head.text.virt_vectors));
80 *(.head.text.virt_trampolines);
81# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
82 KEEP(*(.head.data.fwnmi_page));
83# endif
84#endif
85#else /* !CONFIG_PPC64 */
86 HEAD_TEXT
87#endif
88 } :text
89
90 __head_end = .;
91
92#ifdef CONFIG_PPC64
93 /*
94 * ALIGN(0) overrides the default output section alignment because
95 * this needs to start right after .head.text in order for fixed
96 * section placement to work.
97 */
98 .text ALIGN(0) : AT(ADDR(.text) - LOAD_OFFSET) {
99#ifdef CONFIG_LD_HEAD_STUB_CATCH
100 KEEP(*(.linker_stub_catch));
101 . = . ;
102#endif
103
104#else
105 .text : AT(ADDR(.text) - LOAD_OFFSET) {
106 ALIGN_FUNCTION();
107#endif
108 /* careful! __ftr_alt_* sections need to be close to .text */
109 *(.text.hot .text.hot.* TEXT_MAIN .text.fixup .text.unlikely .text.unlikely.* .fixup __ftr_alt_* .ref.text);
110 *(.tramp.ftrace.text);
111 NOINSTR_TEXT
112 SCHED_TEXT
113 LOCK_TEXT
114 KPROBES_TEXT
115 IRQENTRY_TEXT
116 SOFTIRQENTRY_TEXT
117 /*
118 * -Os builds call FP save/restore functions. The powerpc64
119 * linker generates those on demand in the .sfpr section.
120 * .sfpr gets placed at the beginning of a group of input
121 * sections, which can break start-of-text offset if it is
122 * included with the main text sections, so put it by itself.
123 */
124 *(.sfpr);
125 *(.text.asan.* .text.tsan.*)
126 } :text
127
128 . = ALIGN(PAGE_SIZE);
129 _etext = .;
130 PROVIDE32 (etext = .);
131
132 /* Read-only data */
133 RO_DATA(PAGE_SIZE)
134
135#ifdef CONFIG_PPC32
136 .sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {
137 *(.sdata2)
138 }
139#endif
140
141 .data.rel.ro : AT(ADDR(.data.rel.ro) - LOAD_OFFSET) {
142 *(.data.rel.ro .data.rel.ro.*)
143 }
144
145 .branch_lt : AT(ADDR(.branch_lt) - LOAD_OFFSET) {
146 *(.branch_lt)
147 }
148
149#ifdef CONFIG_PPC32
150 .got1 : AT(ADDR(.got1) - LOAD_OFFSET) {
151 *(.got1)
152 }
153 .got2 : AT(ADDR(.got2) - LOAD_OFFSET) {
154 __got2_start = .;
155 *(.got2)
156 __got2_end = .;
157 }
158 .got : AT(ADDR(.got) - LOAD_OFFSET) {
159 *(.got)
160 *(.got.plt)
161 }
162 .plt : AT(ADDR(.plt) - LOAD_OFFSET) {
163 /* XXX: is .plt (and .got.plt) required? */
164 *(.plt)
165 }
166
167#else /* CONFIG_PPC32 */
168#ifndef CONFIG_PPC_KERNEL_PCREL
169 .toc1 : AT(ADDR(.toc1) - LOAD_OFFSET) {
170 *(.toc1)
171 }
172#endif
173
174 .got : AT(ADDR(.got) - LOAD_OFFSET) ALIGN(256) {
175#ifdef CONFIG_PPC_KERNEL_PCREL
176 *(.got)
177#else
178 *(.got .toc)
179#endif
180 }
181
182 SOFT_MASK_TABLE(8)
183 RESTART_TABLE(8)
184
185#ifdef CONFIG_PPC64_ELF_ABI_V1
186 .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
187 __start_opd = .;
188 KEEP(*(.opd))
189 __end_opd = .;
190 }
191#endif
192
193 . = ALIGN(8);
194 __stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) {
195 __start___stf_entry_barrier_fixup = .;
196 *(__stf_entry_barrier_fixup)
197 __stop___stf_entry_barrier_fixup = .;
198 }
199
200 . = ALIGN(8);
201 __uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) {
202 __start___uaccess_flush_fixup = .;
203 *(__uaccess_flush_fixup)
204 __stop___uaccess_flush_fixup = .;
205 }
206
207 . = ALIGN(8);
208 __entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) {
209 __start___entry_flush_fixup = .;
210 *(__entry_flush_fixup)
211 __stop___entry_flush_fixup = .;
212 }
213
214 . = ALIGN(8);
215 __scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) {
216 __start___scv_entry_flush_fixup = .;
217 *(__scv_entry_flush_fixup)
218 __stop___scv_entry_flush_fixup = .;
219 }
220
221 . = ALIGN(8);
222 __stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
223 __start___stf_exit_barrier_fixup = .;
224 *(__stf_exit_barrier_fixup)
225 __stop___stf_exit_barrier_fixup = .;
226 }
227
228 . = ALIGN(8);
229 __rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
230 __start___rfi_flush_fixup = .;
231 *(__rfi_flush_fixup)
232 __stop___rfi_flush_fixup = .;
233 }
234#endif /* CONFIG_PPC32 */
235
236#ifdef CONFIG_PPC_BARRIER_NOSPEC
237 . = ALIGN(8);
238 __spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) {
239 __start___barrier_nospec_fixup = .;
240 *(__barrier_nospec_fixup)
241 __stop___barrier_nospec_fixup = .;
242 }
243#endif /* CONFIG_PPC_BARRIER_NOSPEC */
244
245#ifdef CONFIG_PPC_E500
246 . = ALIGN(8);
247 __spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) {
248 __start__btb_flush_fixup = .;
249 *(__btb_flush_fixup)
250 __stop__btb_flush_fixup = .;
251 }
252#endif
253
254 /*
255 * Various code relies on __init_begin being at the strict RWX boundary.
256 */
257 . = ALIGN(STRICT_ALIGN_SIZE);
258 __srwx_boundary = .;
259 __end_rodata = .;
260 __init_begin = .;
261
262/*
263 * Init sections discarded at runtime
264 */
265 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
266 _sinittext = .;
267 INIT_TEXT
268 *(.tramp.ftrace.init);
269 /*
270 *.init.text might be RO so we must ensure this section ends on
271 * a page boundary.
272 */
273 . = ALIGN(PAGE_SIZE);
274 _einittext = .;
275 } :text
276
277 /* .exit.text is discarded at runtime, not link time,
278 * to deal with references from __bug_table
279 */
280 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
281 __exittext_begin = .;
282 EXIT_TEXT
283 __exittext_end = .;
284 }
285
286 . = ALIGN(PAGE_SIZE);
287
288 INIT_DATA_SECTION(16)
289
290 . = ALIGN(8);
291 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
292 __start___ftr_fixup = .;
293 KEEP(*(__ftr_fixup))
294 __stop___ftr_fixup = .;
295 }
296 . = ALIGN(8);
297 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
298 __start___mmu_ftr_fixup = .;
299 KEEP(*(__mmu_ftr_fixup))
300 __stop___mmu_ftr_fixup = .;
301 }
302 . = ALIGN(8);
303 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
304 __start___lwsync_fixup = .;
305 KEEP(*(__lwsync_fixup))
306 __stop___lwsync_fixup = .;
307 }
308#ifdef CONFIG_PPC64
309 . = ALIGN(8);
310 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
311 __start___fw_ftr_fixup = .;
312 KEEP(*(__fw_ftr_fixup))
313 __stop___fw_ftr_fixup = .;
314 }
315#endif
316
317 PERCPU_SECTION(L1_CACHE_BYTES)
318
319 . = ALIGN(8);
320 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
321 __machine_desc_start = . ;
322 KEEP(*(.machine.desc))
323 __machine_desc_end = . ;
324 }
325#ifdef CONFIG_RELOCATABLE
326 . = ALIGN(8);
327 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
328 {
329 __dynamic_symtab = .;
330 *(.dynsym)
331 }
332 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
333 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
334 {
335 __dynamic_start = .;
336 *(.dynamic)
337 }
338 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
339 .gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
340 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
341 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
342 {
343 __rela_dyn_start = .;
344 *(.rela*)
345 }
346#endif
347 /* .exit.data is discarded at runtime, not link time,
348 * to deal with references from .exit.text
349 */
350 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
351 EXIT_DATA
352 }
353
354 /* freed after init ends here */
355 . = ALIGN(PAGE_SIZE);
356 __init_end = .;
357
358/*
359 * And now the various read/write data
360 */
361
362 . = ALIGN(PAGE_SIZE);
363 _sdata = .;
364
365 .data : AT(ADDR(.data) - LOAD_OFFSET) {
366 DATA_DATA
367 *(.data.rel*)
368#ifdef CONFIG_PPC32
369 *(SDATA_MAIN)
370#endif
371 }
372
373 /* The initial task and kernel stack */
374 INIT_TASK_DATA_SECTION(THREAD_ALIGN)
375
376 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
377 PAGE_ALIGNED_DATA(PAGE_SIZE)
378 }
379
380 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
381 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
382 }
383
384 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
385 READ_MOSTLY_DATA(L1_CACHE_BYTES)
386 }
387
388 . = ALIGN(PAGE_SIZE);
389 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
390 NOSAVE_DATA
391 }
392
393 BUG_TABLE
394
395 . = ALIGN(PAGE_SIZE);
396 _edata = .;
397 PROVIDE32 (edata = .);
398
399/*
400 * And finally the bss
401 */
402
403 BSS_SECTION(0, 0, 0)
404
405 . = ALIGN(PAGE_SIZE);
406 _end = . ;
407 PROVIDE32 (end = .);
408
409 DWARF_DEBUG
410 ELF_DETAILS
411
412 DISCARDS
413 /DISCARD/ : {
414 *(*.EMB.apuinfo)
415 *(.glink .iplt .plt)
416 *(.gnu.version*)
417 *(.gnu.attributes)
418 *(.eh_frame)
419#ifndef CONFIG_RELOCATABLE
420 *(.rela*)
421#endif
422 }
423}
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
59#ifdef CONFIG_PPC32
60 *(.got1)
61 __got2_start = .;
62 *(.got2)
63 __got2_end = .;
64#endif /* CONFIG_PPC32 */
65
66 } :kernel
67
68 . = ALIGN(PAGE_SIZE);
69 _etext = .;
70 PROVIDE32 (etext = .);
71
72 /* Read-only data */
73 RODATA
74
75 EXCEPTION_TABLE(0)
76
77 NOTES :kernel :notes
78
79 /* The dummy segment contents for the bug workaround mentioned above
80 near PHDRS. */
81 .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) {
82 LONG(0)
83 LONG(0)
84 LONG(0)
85 } :kernel :dummy
86
87/*
88 * Init sections discarded at runtime
89 */
90 . = ALIGN(PAGE_SIZE);
91 __init_begin = .;
92 INIT_TEXT_SECTION(PAGE_SIZE) :kernel
93
94 /* .exit.text is discarded at runtime, not link time,
95 * to deal with references from __bug_table
96 */
97 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
98 EXIT_TEXT
99 }
100
101 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
102 INIT_DATA
103 __vtop_table_begin = .;
104 *(.vtop_fixup);
105 __vtop_table_end = .;
106 __ptov_table_begin = .;
107 *(.ptov_fixup);
108 __ptov_table_end = .;
109 }
110
111 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
112 INIT_SETUP(16)
113 }
114
115 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
116 INIT_CALLS
117 }
118
119 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
120 CON_INITCALL
121 }
122
123 SECURITY_INIT
124
125 . = ALIGN(8);
126 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
127 __start___ftr_fixup = .;
128 *(__ftr_fixup)
129 __stop___ftr_fixup = .;
130 }
131 . = ALIGN(8);
132 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
133 __start___mmu_ftr_fixup = .;
134 *(__mmu_ftr_fixup)
135 __stop___mmu_ftr_fixup = .;
136 }
137 . = ALIGN(8);
138 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
139 __start___lwsync_fixup = .;
140 *(__lwsync_fixup)
141 __stop___lwsync_fixup = .;
142 }
143#ifdef CONFIG_PPC64
144 . = ALIGN(8);
145 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
146 __start___fw_ftr_fixup = .;
147 *(__fw_ftr_fixup)
148 __stop___fw_ftr_fixup = .;
149 }
150#endif
151 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
152 INIT_RAM_FS
153 }
154
155 PERCPU_SECTION(L1_CACHE_BYTES)
156
157 . = ALIGN(8);
158 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
159 __machine_desc_start = . ;
160 *(.machine.desc)
161 __machine_desc_end = . ;
162 }
163#ifdef CONFIG_RELOCATABLE
164 . = ALIGN(8);
165 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
166 {
167#ifdef CONFIG_RELOCATABLE_PPC32
168 __dynamic_symtab = .;
169#endif
170 *(.dynsym)
171 }
172 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
173 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
174 {
175 __dynamic_start = .;
176 *(.dynamic)
177 }
178 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
179 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
180 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
181 {
182 __rela_dyn_start = .;
183 *(.rela*)
184 }
185#endif
186
187 /* freed after init ends here */
188 . = ALIGN(PAGE_SIZE);
189 __init_end = .;
190
191/*
192 * And now the various read/write data
193 */
194
195 . = ALIGN(PAGE_SIZE);
196 _sdata = .;
197
198#ifdef CONFIG_PPC32
199 .data : AT(ADDR(.data) - LOAD_OFFSET) {
200 DATA_DATA
201 *(.sdata)
202 *(.got.plt) *(.got)
203 }
204#else
205 .data : AT(ADDR(.data) - LOAD_OFFSET) {
206 DATA_DATA
207 *(.data.rel*)
208 *(.toc1)
209 *(.branch_lt)
210 }
211
212 .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
213 *(.opd)
214 }
215
216 .got : AT(ADDR(.got) - LOAD_OFFSET) {
217 __toc_start = .;
218#ifndef CONFIG_RELOCATABLE
219 __prom_init_toc_start = .;
220 arch/powerpc/kernel/prom_init.o*(.toc .got)
221 __prom_init_toc_end = .;
222#endif
223 *(.got)
224 *(.toc)
225 }
226#endif
227
228 /* The initial task and kernel stack */
229 INIT_TASK_DATA_SECTION(THREAD_SIZE)
230
231 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
232 PAGE_ALIGNED_DATA(PAGE_SIZE)
233 }
234
235 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
236 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
237 }
238
239 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
240 READ_MOSTLY_DATA(L1_CACHE_BYTES)
241 }
242
243 . = ALIGN(PAGE_SIZE);
244 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
245 NOSAVE_DATA
246 }
247
248 . = ALIGN(PAGE_SIZE);
249 _edata = .;
250 PROVIDE32 (edata = .);
251
252/*
253 * And finally the bss
254 */
255
256 BSS_SECTION(0, 0, 0)
257
258 . = ALIGN(PAGE_SIZE);
259 _end = . ;
260 PROVIDE32 (end = .);
261
262 /* Sections to be discarded. */
263 DISCARDS
264}