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#include <asm/page.h>
13#include <asm-generic/vmlinux.lds.h>
14#include <asm/cache.h>
15#include <asm/thread_info.h>
16
17#define STRICT_ALIGN_SIZE	(1 << CONFIG_DATA_SHIFT)
18
19ENTRY(_stext)
20
21PHDRS {
22	text PT_LOAD FLAGS(7); /* RWX */
23	note PT_NOTE FLAGS(0);
24}
25
26#ifdef CONFIG_PPC64
27OUTPUT_ARCH(powerpc:common64)
28jiffies = jiffies_64;
29#else
30OUTPUT_ARCH(powerpc:common)
31jiffies = jiffies_64 + 4;
32#endif
33SECTIONS
34{
35	. = KERNELBASE;
36
37/*
38 * Text, read only data and other permanent read-only sections
39 */
40
41	_text = .;
42	_stext = .;
43
44	/*
45	 * Head text.
46	 * This needs to be in its own output section to avoid ld placing
47	 * branch trampoline stubs randomly throughout the fixed sections,
48	 * which it will do (even if the branch comes from another section)
49	 * in order to optimize stub generation.
50	 */
51	.head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
52#ifdef CONFIG_PPC64
53		KEEP(*(.head.text.first_256B));
54#ifdef CONFIG_PPC_BOOK3E
55#else
56		KEEP(*(.head.text.real_vectors));
57		*(.head.text.real_trampolines);
58		KEEP(*(.head.text.virt_vectors));
59		*(.head.text.virt_trampolines);
60# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
61		KEEP(*(.head.data.fwnmi_page));
62# endif
63#endif
64#else /* !CONFIG_PPC64 */
65		HEAD_TEXT
66#endif
67	} :text
68
69	__head_end = .;
70
71#ifdef CONFIG_PPC64
72	/*
73	 * ALIGN(0) overrides the default output section alignment because
74	 * this needs to start right after .head.text in order for fixed
75	 * section placement to work.
76	 */
77	.text ALIGN(0) : AT(ADDR(.text) - LOAD_OFFSET) {
78#ifdef CONFIG_LD_HEAD_STUB_CATCH
79		KEEP(*(.linker_stub_catch));
80		. = . ;
81#endif
82
83#else
84	.text : AT(ADDR(.text) - LOAD_OFFSET) {
85		ALIGN_FUNCTION();
86#endif
87		/* careful! __ftr_alt_* sections need to be close to .text */
88		*(.text.hot .text.hot.* TEXT_MAIN .text.fixup .text.unlikely .text.unlikely.* .fixup __ftr_alt_* .ref.text);
89#ifdef CONFIG_PPC64
90		*(.tramp.ftrace.text);
91#endif
92		NOINSTR_TEXT
93		SCHED_TEXT
94		CPUIDLE_TEXT
95		LOCK_TEXT
96		KPROBES_TEXT
97		IRQENTRY_TEXT
98		SOFTIRQENTRY_TEXT
99		/*
100		 * -Os builds call FP save/restore functions. The powerpc64
101		 * linker generates those on demand in the .sfpr section.
102		 * .sfpr gets placed at the beginning of a group of input
103		 * sections, which can break start-of-text offset if it is
104		 * included with the main text sections, so put it by itself.
105		 */
106		*(.sfpr);
107		MEM_KEEP(init.text)
108		MEM_KEEP(exit.text)
109
110#ifdef CONFIG_PPC32
111		*(.got1)
112		__got2_start = .;
113		*(.got2)
114		__got2_end = .;
115#endif /* CONFIG_PPC32 */
116
117	} :text
118
119	. = ALIGN(PAGE_SIZE);
120	_etext = .;
121	PROVIDE32 (etext = .);
122
123	/* Read-only data */
124	RO_DATA(PAGE_SIZE)
125
126#ifdef CONFIG_PPC64
127	. = ALIGN(8);
128	__stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) {
129		__start___stf_entry_barrier_fixup = .;
130		*(__stf_entry_barrier_fixup)
131		__stop___stf_entry_barrier_fixup = .;
132	}
133
134	. = ALIGN(8);
135	__uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) {
136		__start___uaccess_flush_fixup = .;
137		*(__uaccess_flush_fixup)
138		__stop___uaccess_flush_fixup = .;
139	}
140
141	. = ALIGN(8);
142	__entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) {
143		__start___entry_flush_fixup = .;
144		*(__entry_flush_fixup)
145		__stop___entry_flush_fixup = .;
146	}
147
148	. = ALIGN(8);
149	__stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
150		__start___stf_exit_barrier_fixup = .;
151		*(__stf_exit_barrier_fixup)
152		__stop___stf_exit_barrier_fixup = .;
153	}
154
155	. = ALIGN(8);
156	__rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
157		__start___rfi_flush_fixup = .;
158		*(__rfi_flush_fixup)
159		__stop___rfi_flush_fixup = .;
160	}
161#endif /* CONFIG_PPC64 */
162
163#ifdef CONFIG_PPC_BARRIER_NOSPEC
164	. = ALIGN(8);
165	__spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) {
166		__start___barrier_nospec_fixup = .;
167		*(__barrier_nospec_fixup)
168		__stop___barrier_nospec_fixup = .;
169	}
170#endif /* CONFIG_PPC_BARRIER_NOSPEC */
171
172#ifdef CONFIG_PPC_FSL_BOOK3E
173	. = ALIGN(8);
174	__spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) {
175		__start__btb_flush_fixup = .;
176		*(__btb_flush_fixup)
177		__stop__btb_flush_fixup = .;
178	}
179#endif
180
181/*
182 * Init sections discarded at runtime
183 */
184	. = ALIGN(STRICT_ALIGN_SIZE);
185	__init_begin = .;
186	. = ALIGN(PAGE_SIZE);
187	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
188		_sinittext = .;
189		INIT_TEXT
190
191		/*
192		 *.init.text might be RO so we must ensure this section ends on
193		 * a page boundary.
194		 */
195		. = ALIGN(PAGE_SIZE);
196		_einittext = .;
197#ifdef CONFIG_PPC64
198		*(.tramp.ftrace.init);
199#endif
200	} :text
201
202	/* .exit.text is discarded at runtime, not link time,
203	 * to deal with references from __bug_table
204	 */
205	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
206		EXIT_TEXT
207	}
208
209	. = ALIGN(PAGE_SIZE);
210
211	INIT_DATA_SECTION(16)
212
213	. = ALIGN(8);
214	__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
215		__start___ftr_fixup = .;
216		KEEP(*(__ftr_fixup))
217		__stop___ftr_fixup = .;
218	}
219	. = ALIGN(8);
220	__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
221		__start___mmu_ftr_fixup = .;
222		KEEP(*(__mmu_ftr_fixup))
223		__stop___mmu_ftr_fixup = .;
224	}
225	. = ALIGN(8);
226	__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
227		__start___lwsync_fixup = .;
228		KEEP(*(__lwsync_fixup))
229		__stop___lwsync_fixup = .;
230	}
231#ifdef CONFIG_PPC64
232	. = ALIGN(8);
233	__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
234		__start___fw_ftr_fixup = .;
235		KEEP(*(__fw_ftr_fixup))
236		__stop___fw_ftr_fixup = .;
237	}
238#endif
239
240	PERCPU_SECTION(L1_CACHE_BYTES)
241
242	. = ALIGN(8);
243	.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
244		__machine_desc_start = . ;
245		KEEP(*(.machine.desc))
246		__machine_desc_end = . ;
247	}
248#ifdef CONFIG_RELOCATABLE
249	. = ALIGN(8);
250	.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
251	{
252#ifdef CONFIG_PPC32
253		__dynamic_symtab = .;
254#endif
255		*(.dynsym)
256	}
257	.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
258	.dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
259	{
260		__dynamic_start = .;
261		*(.dynamic)
262	}
263	.hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
264	.gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
265	.interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
266	.rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
267	{
268		__rela_dyn_start = .;
269		*(.rela*)
270	}
271#endif
272	/* .exit.data is discarded at runtime, not link time,
273	 * to deal with references from .exit.text
274	 */
275	.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
276		EXIT_DATA
277	}
278
279	/* freed after init ends here */
280	. = ALIGN(PAGE_SIZE);
281	__init_end = .;
282
283/*
284 * And now the various read/write data
285 */
286
287	. = ALIGN(PAGE_SIZE);
288	_sdata = .;
289
290#ifdef CONFIG_PPC32
291	.data : AT(ADDR(.data) - LOAD_OFFSET) {
292		DATA_DATA
293#ifdef CONFIG_UBSAN
294		*(.data..Lubsan_data*)
295		*(.data..Lubsan_type*)
296#endif
297		*(.data.rel*)
298		*(SDATA_MAIN)
299		*(.sdata2)
300		*(.got.plt) *(.got)
301		*(.plt)
302		*(.branch_lt)
303	}
304#else
305	.data : AT(ADDR(.data) - LOAD_OFFSET) {
306		DATA_DATA
307#ifdef CONFIG_UBSAN
308		*(.data..Lubsan_data*)
309		*(.data..Lubsan_type*)
310#endif
311		*(.data.rel*)
312		*(.toc1)
313		*(.branch_lt)
314	}
315
316	.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
317		__start_opd = .;
318		KEEP(*(.opd))
319		__end_opd = .;
320	}
321
322	. = ALIGN(256);
323	.got : AT(ADDR(.got) - LOAD_OFFSET) {
324		__toc_start = .;
325#ifndef CONFIG_RELOCATABLE
326		__prom_init_toc_start = .;
327		arch/powerpc/kernel/prom_init.o*(.toc .got)
328		__prom_init_toc_end = .;
329#endif
330		*(.got)
331		*(.toc)
332	}
333#endif
334
335	/* The initial task and kernel stack */
336	INIT_TASK_DATA_SECTION(THREAD_ALIGN)
337
338	.data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
339		PAGE_ALIGNED_DATA(PAGE_SIZE)
340	}
341
342	.data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
343		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
344	}
345
346	.data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
347		READ_MOSTLY_DATA(L1_CACHE_BYTES)
348	}
349
350	. = ALIGN(PAGE_SIZE);
351	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
352		NOSAVE_DATA
353	}
354
355	BUG_TABLE
356
357	. = ALIGN(PAGE_SIZE);
358	_edata  =  .;
359	PROVIDE32 (edata = .);
360
361/*
362 * And finally the bss
363 */
364
365	BSS_SECTION(0, 0, 0)
366
367	. = ALIGN(PAGE_SIZE);
368	_end = . ;
369	PROVIDE32 (end = .);
370
371	STABS_DEBUG
372	DWARF_DEBUG
373	ELF_DETAILS
374
375	DISCARDS
376	/DISCARD/ : {
377		*(*.EMB.apuinfo)
378		*(.glink .iplt .plt .rela* .comment)
379		*(.gnu.version*)
380		*(.gnu.attributes)
381		*(.eh_frame)
382	}
383}
384