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#ifdef CONFIG_PPC64
111		*(.tramp.ftrace.text);
112#endif
113		NOINSTR_TEXT
114		SCHED_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		*(.text.asan.* .text.tsan.*)
128		MEM_KEEP(init.text)
129		MEM_KEEP(exit.text)
130	} :text
131
132	. = ALIGN(PAGE_SIZE);
133	_etext = .;
134	PROVIDE32 (etext = .);
135
136	/* Read-only data */
137	RO_DATA(PAGE_SIZE)
138
139#ifdef CONFIG_PPC32
140	.sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {
141		*(.sdata2)
142	}
143#endif
144
145	.data.rel.ro : AT(ADDR(.data.rel.ro) - LOAD_OFFSET) {
146		*(.data.rel.ro .data.rel.ro.*)
147	}
148
149	.branch_lt : AT(ADDR(.branch_lt) - LOAD_OFFSET) {
150		*(.branch_lt)
151	}
152
153#ifdef CONFIG_PPC32
154	.got1 : AT(ADDR(.got1) - LOAD_OFFSET) {
155		*(.got1)
156	}
157	.got2 : AT(ADDR(.got2) - LOAD_OFFSET) {
158		__got2_start = .;
159		*(.got2)
160		__got2_end = .;
161	}
162	.got : AT(ADDR(.got) - LOAD_OFFSET) {
163		*(.got)
164		*(.got.plt)
165	}
166	.plt : AT(ADDR(.plt) - LOAD_OFFSET) {
167		/* XXX: is .plt (and .got.plt) required? */
168		*(.plt)
169	}
170
171#else /* CONFIG_PPC32 */
172#ifndef CONFIG_PPC_KERNEL_PCREL
173	.toc1 : AT(ADDR(.toc1) - LOAD_OFFSET) {
174		*(.toc1)
175	}
176#endif
177
178	.got : AT(ADDR(.got) - LOAD_OFFSET) ALIGN(256) {
179#ifdef CONFIG_PPC_KERNEL_PCREL
180		*(.got)
181#else
182		*(.got .toc)
183#endif
184	}
185
186	SOFT_MASK_TABLE(8)
187	RESTART_TABLE(8)
188
189#ifdef CONFIG_PPC64_ELF_ABI_V1
190	.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
191		__start_opd = .;
192		KEEP(*(.opd))
193		__end_opd = .;
194	}
195#endif
196
197	. = ALIGN(8);
198	__stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) {
199		__start___stf_entry_barrier_fixup = .;
200		*(__stf_entry_barrier_fixup)
201		__stop___stf_entry_barrier_fixup = .;
202	}
203
204	. = ALIGN(8);
205	__uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) {
206		__start___uaccess_flush_fixup = .;
207		*(__uaccess_flush_fixup)
208		__stop___uaccess_flush_fixup = .;
209	}
210
211	. = ALIGN(8);
212	__entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) {
213		__start___entry_flush_fixup = .;
214		*(__entry_flush_fixup)
215		__stop___entry_flush_fixup = .;
216	}
217
218	. = ALIGN(8);
219	__scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) {
220		__start___scv_entry_flush_fixup = .;
221		*(__scv_entry_flush_fixup)
222		__stop___scv_entry_flush_fixup = .;
223	}
224
225	. = ALIGN(8);
226	__stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
227		__start___stf_exit_barrier_fixup = .;
228		*(__stf_exit_barrier_fixup)
229		__stop___stf_exit_barrier_fixup = .;
230	}
231
232	. = ALIGN(8);
233	__rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
234		__start___rfi_flush_fixup = .;
235		*(__rfi_flush_fixup)
236		__stop___rfi_flush_fixup = .;
237	}
238#endif /* CONFIG_PPC32 */
239
240#ifdef CONFIG_PPC_BARRIER_NOSPEC
241	. = ALIGN(8);
242	__spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) {
243		__start___barrier_nospec_fixup = .;
244		*(__barrier_nospec_fixup)
245		__stop___barrier_nospec_fixup = .;
246	}
247#endif /* CONFIG_PPC_BARRIER_NOSPEC */
248
249#ifdef CONFIG_PPC_E500
250	. = ALIGN(8);
251	__spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) {
252		__start__btb_flush_fixup = .;
253		*(__btb_flush_fixup)
254		__stop__btb_flush_fixup = .;
255	}
256#endif
257
258	/*
259	 * Various code relies on __init_begin being at the strict RWX boundary.
260	 */
261	. = ALIGN(STRICT_ALIGN_SIZE);
262	__srwx_boundary = .;
263	__end_rodata = .;
264	__init_begin = .;
265
266/*
267 * Init sections discarded at runtime
268 */
269	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
270		_sinittext = .;
271		INIT_TEXT
272
273		/*
274		 *.init.text might be RO so we must ensure this section ends on
275		 * a page boundary.
276		 */
277		. = ALIGN(PAGE_SIZE);
278		_einittext = .;
279#ifdef CONFIG_PPC64
280		*(.tramp.ftrace.init);
281#endif
282	} :text
283
284	/* .exit.text is discarded at runtime, not link time,
285	 * to deal with references from __bug_table
286	 */
287	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
288		EXIT_TEXT
289	}
290
291	. = ALIGN(PAGE_SIZE);
292
293	INIT_DATA_SECTION(16)
294
295	. = ALIGN(8);
296	__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
297		__start___ftr_fixup = .;
298		KEEP(*(__ftr_fixup))
299		__stop___ftr_fixup = .;
300	}
301	. = ALIGN(8);
302	__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
303		__start___mmu_ftr_fixup = .;
304		KEEP(*(__mmu_ftr_fixup))
305		__stop___mmu_ftr_fixup = .;
306	}
307	. = ALIGN(8);
308	__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
309		__start___lwsync_fixup = .;
310		KEEP(*(__lwsync_fixup))
311		__stop___lwsync_fixup = .;
312	}
313#ifdef CONFIG_PPC64
314	. = ALIGN(8);
315	__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
316		__start___fw_ftr_fixup = .;
317		KEEP(*(__fw_ftr_fixup))
318		__stop___fw_ftr_fixup = .;
319	}
320#endif
321
322	PERCPU_SECTION(L1_CACHE_BYTES)
323
324	. = ALIGN(8);
325	.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
326		__machine_desc_start = . ;
327		KEEP(*(.machine.desc))
328		__machine_desc_end = . ;
329	}
330#ifdef CONFIG_RELOCATABLE
331	. = ALIGN(8);
332	.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
333	{
334		__dynamic_symtab = .;
335		*(.dynsym)
336	}
337	.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
338	.dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
339	{
340		__dynamic_start = .;
341		*(.dynamic)
342	}
343	.hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
344	.gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
345	.interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
346	.rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
347	{
348		__rela_dyn_start = .;
349		*(.rela*)
350	}
351#endif
352	/* .exit.data is discarded at runtime, not link time,
353	 * to deal with references from .exit.text
354	 */
355	.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
356		EXIT_DATA
357	}
358
359	/* freed after init ends here */
360	. = ALIGN(PAGE_SIZE);
361	__init_end = .;
362
363/*
364 * And now the various read/write data
365 */
366
367	. = ALIGN(PAGE_SIZE);
368	_sdata = .;
369
370	.data : AT(ADDR(.data) - LOAD_OFFSET) {
371		DATA_DATA
372		*(.data.rel*)
373#ifdef CONFIG_PPC32
374		*(SDATA_MAIN)
375#endif
376	}
377
378	/* The initial task and kernel stack */
379	INIT_TASK_DATA_SECTION(THREAD_ALIGN)
380
381	.data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
382		PAGE_ALIGNED_DATA(PAGE_SIZE)
383	}
384
385	.data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
386		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
387	}
388
389	.data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
390		READ_MOSTLY_DATA(L1_CACHE_BYTES)
391	}
392
393	. = ALIGN(PAGE_SIZE);
394	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
395		NOSAVE_DATA
396	}
397
398	BUG_TABLE
399
400	. = ALIGN(PAGE_SIZE);
401	_edata  =  .;
402	PROVIDE32 (edata = .);
403
404/*
405 * And finally the bss
406 */
407
408	BSS_SECTION(0, 0, 0)
409
410	. = ALIGN(PAGE_SIZE);
411	_end = . ;
412	PROVIDE32 (end = .);
413
414	DWARF_DEBUG
415	ELF_DETAILS
416
417	DISCARDS
418	/DISCARD/ : {
419		*(*.EMB.apuinfo)
420		*(.glink .iplt .plt)
421		*(.gnu.version*)
422		*(.gnu.attributes)
423		*(.eh_frame)
424#ifndef CONFIG_RELOCATABLE
425		*(.rela*)
426#endif
427	}
428}
429