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