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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 MEM_KEEP(init.text)
127 MEM_KEEP(exit.text)
128 } :text
129
130 . = ALIGN(PAGE_SIZE);
131 _etext = .;
132 PROVIDE32 (etext = .);
133
134 /* Read-only data */
135 RO_DATA(PAGE_SIZE)
136
137#ifdef CONFIG_PPC32
138 .sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {
139 *(.sdata2)
140 }
141#endif
142
143 .data.rel.ro : AT(ADDR(.data.rel.ro) - LOAD_OFFSET) {
144 *(.data.rel.ro .data.rel.ro.*)
145 }
146
147 .branch_lt : AT(ADDR(.branch_lt) - LOAD_OFFSET) {
148 *(.branch_lt)
149 }
150
151#ifdef CONFIG_PPC32
152 .got1 : AT(ADDR(.got1) - LOAD_OFFSET) {
153 *(.got1)
154 }
155 .got2 : AT(ADDR(.got2) - LOAD_OFFSET) {
156 __got2_start = .;
157 *(.got2)
158 __got2_end = .;
159 }
160 .got : AT(ADDR(.got) - LOAD_OFFSET) {
161 *(.got)
162 *(.got.plt)
163 }
164 .plt : AT(ADDR(.plt) - LOAD_OFFSET) {
165 /* XXX: is .plt (and .got.plt) required? */
166 *(.plt)
167 }
168
169#else /* CONFIG_PPC32 */
170#ifndef CONFIG_PPC_KERNEL_PCREL
171 .toc1 : AT(ADDR(.toc1) - LOAD_OFFSET) {
172 *(.toc1)
173 }
174#endif
175
176 .got : AT(ADDR(.got) - LOAD_OFFSET) ALIGN(256) {
177#ifdef CONFIG_PPC_KERNEL_PCREL
178 *(.got)
179#else
180 *(.got .toc)
181#endif
182 }
183
184 SOFT_MASK_TABLE(8)
185 RESTART_TABLE(8)
186
187#ifdef CONFIG_PPC64_ELF_ABI_V1
188 .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
189 __start_opd = .;
190 KEEP(*(.opd))
191 __end_opd = .;
192 }
193#endif
194
195 . = ALIGN(8);
196 __stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) {
197 __start___stf_entry_barrier_fixup = .;
198 *(__stf_entry_barrier_fixup)
199 __stop___stf_entry_barrier_fixup = .;
200 }
201
202 . = ALIGN(8);
203 __uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) {
204 __start___uaccess_flush_fixup = .;
205 *(__uaccess_flush_fixup)
206 __stop___uaccess_flush_fixup = .;
207 }
208
209 . = ALIGN(8);
210 __entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) {
211 __start___entry_flush_fixup = .;
212 *(__entry_flush_fixup)
213 __stop___entry_flush_fixup = .;
214 }
215
216 . = ALIGN(8);
217 __scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) {
218 __start___scv_entry_flush_fixup = .;
219 *(__scv_entry_flush_fixup)
220 __stop___scv_entry_flush_fixup = .;
221 }
222
223 . = ALIGN(8);
224 __stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
225 __start___stf_exit_barrier_fixup = .;
226 *(__stf_exit_barrier_fixup)
227 __stop___stf_exit_barrier_fixup = .;
228 }
229
230 . = ALIGN(8);
231 __rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
232 __start___rfi_flush_fixup = .;
233 *(__rfi_flush_fixup)
234 __stop___rfi_flush_fixup = .;
235 }
236#endif /* CONFIG_PPC32 */
237
238#ifdef CONFIG_PPC_BARRIER_NOSPEC
239 . = ALIGN(8);
240 __spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) {
241 __start___barrier_nospec_fixup = .;
242 *(__barrier_nospec_fixup)
243 __stop___barrier_nospec_fixup = .;
244 }
245#endif /* CONFIG_PPC_BARRIER_NOSPEC */
246
247#ifdef CONFIG_PPC_E500
248 . = ALIGN(8);
249 __spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) {
250 __start__btb_flush_fixup = .;
251 *(__btb_flush_fixup)
252 __stop__btb_flush_fixup = .;
253 }
254#endif
255
256 /*
257 * Various code relies on __init_begin being at the strict RWX boundary.
258 */
259 . = ALIGN(STRICT_ALIGN_SIZE);
260 __srwx_boundary = .;
261 __end_rodata = .;
262 __init_begin = .;
263
264/*
265 * Init sections discarded at runtime
266 */
267 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
268 _sinittext = .;
269 INIT_TEXT
270
271 /*
272 *.init.text might be RO so we must ensure this section ends on
273 * a page boundary.
274 */
275 . = ALIGN(PAGE_SIZE);
276 _einittext = .;
277 *(.tramp.ftrace.init);
278 } :text
279
280 /* .exit.text is discarded at runtime, not link time,
281 * to deal with references from __bug_table
282 */
283 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
284 __exittext_begin = .;
285 EXIT_TEXT
286 __exittext_end = .;
287 }
288
289 . = ALIGN(PAGE_SIZE);
290
291 INIT_DATA_SECTION(16)
292
293 . = ALIGN(8);
294 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
295 __start___ftr_fixup = .;
296 KEEP(*(__ftr_fixup))
297 __stop___ftr_fixup = .;
298 }
299 . = ALIGN(8);
300 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
301 __start___mmu_ftr_fixup = .;
302 KEEP(*(__mmu_ftr_fixup))
303 __stop___mmu_ftr_fixup = .;
304 }
305 . = ALIGN(8);
306 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
307 __start___lwsync_fixup = .;
308 KEEP(*(__lwsync_fixup))
309 __stop___lwsync_fixup = .;
310 }
311#ifdef CONFIG_PPC64
312 . = ALIGN(8);
313 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
314 __start___fw_ftr_fixup = .;
315 KEEP(*(__fw_ftr_fixup))
316 __stop___fw_ftr_fixup = .;
317 }
318#endif
319
320 PERCPU_SECTION(L1_CACHE_BYTES)
321
322 . = ALIGN(8);
323 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
324 __machine_desc_start = . ;
325 KEEP(*(.machine.desc))
326 __machine_desc_end = . ;
327 }
328#ifdef CONFIG_RELOCATABLE
329 . = ALIGN(8);
330 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
331 {
332 __dynamic_symtab = .;
333 *(.dynsym)
334 }
335 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
336 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
337 {
338 __dynamic_start = .;
339 *(.dynamic)
340 }
341 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
342 .gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
343 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
344 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
345 {
346 __rela_dyn_start = .;
347 *(.rela*)
348 }
349#endif
350 /* .exit.data is discarded at runtime, not link time,
351 * to deal with references from .exit.text
352 */
353 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
354 EXIT_DATA
355 }
356
357 /* freed after init ends here */
358 . = ALIGN(PAGE_SIZE);
359 __init_end = .;
360
361/*
362 * And now the various read/write data
363 */
364
365 . = ALIGN(PAGE_SIZE);
366 _sdata = .;
367
368 .data : AT(ADDR(.data) - LOAD_OFFSET) {
369 DATA_DATA
370 *(.data.rel*)
371#ifdef CONFIG_PPC32
372 *(SDATA_MAIN)
373#endif
374 }
375
376 /* The initial task and kernel stack */
377 INIT_TASK_DATA_SECTION(THREAD_ALIGN)
378
379 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
380 PAGE_ALIGNED_DATA(PAGE_SIZE)
381 }
382
383 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
384 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
385 }
386
387 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
388 READ_MOSTLY_DATA(L1_CACHE_BYTES)
389 }
390
391 . = ALIGN(PAGE_SIZE);
392 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
393 NOSAVE_DATA
394 }
395
396 BUG_TABLE
397
398 . = ALIGN(PAGE_SIZE);
399 _edata = .;
400 PROVIDE32 (edata = .);
401
402/*
403 * And finally the bss
404 */
405
406 BSS_SECTION(0, 0, 0)
407
408 . = ALIGN(PAGE_SIZE);
409 _end = . ;
410 PROVIDE32 (end = .);
411
412 DWARF_DEBUG
413 ELF_DETAILS
414
415 DISCARDS
416 /DISCARD/ : {
417 *(*.EMB.apuinfo)
418 *(.glink .iplt .plt)
419 *(.gnu.version*)
420 *(.gnu.attributes)
421 *(.eh_frame)
422#ifndef CONFIG_RELOCATABLE
423 *(.rela*)
424#endif
425 }
426}
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}