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_MAIN .text.fixup .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		_einittext = .;
191#ifdef CONFIG_PPC64
192		*(.tramp.ftrace.init);
193#endif
194	} :text
195
196	/* .exit.text is discarded at runtime, not link time,
197	 * to deal with references from __bug_table
198	 */
199	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
200		EXIT_TEXT
201	}
202
203	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
204		INIT_DATA
205	}
206
207	.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
208		INIT_SETUP(16)
209	}
210
211	.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
212		INIT_CALLS
213	}
214
215	.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
216		CON_INITCALL
217	}
218
219	. = ALIGN(8);
220	__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
221		__start___ftr_fixup = .;
222		KEEP(*(__ftr_fixup))
223		__stop___ftr_fixup = .;
224	}
225	. = ALIGN(8);
226	__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
227		__start___mmu_ftr_fixup = .;
228		KEEP(*(__mmu_ftr_fixup))
229		__stop___mmu_ftr_fixup = .;
230	}
231	. = ALIGN(8);
232	__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
233		__start___lwsync_fixup = .;
234		KEEP(*(__lwsync_fixup))
235		__stop___lwsync_fixup = .;
236	}
237#ifdef CONFIG_PPC64
238	. = ALIGN(8);
239	__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
240		__start___fw_ftr_fixup = .;
241		KEEP(*(__fw_ftr_fixup))
242		__stop___fw_ftr_fixup = .;
243	}
244#endif
245	.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
246		INIT_RAM_FS
247	}
248
249	PERCPU_SECTION(L1_CACHE_BYTES)
250
251	. = ALIGN(8);
252	.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
253		__machine_desc_start = . ;
254		KEEP(*(.machine.desc))
255		__machine_desc_end = . ;
256	}
257#ifdef CONFIG_RELOCATABLE
258	. = ALIGN(8);
259	.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
260	{
261#ifdef CONFIG_PPC32
262		__dynamic_symtab = .;
263#endif
264		*(.dynsym)
265	}
266	.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
267	.dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
268	{
269		__dynamic_start = .;
270		*(.dynamic)
271	}
272	.hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
273	.gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
274	.interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
275	.rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
276	{
277		__rela_dyn_start = .;
278		*(.rela*)
279	}
280#endif
281	/* .exit.data is discarded at runtime, not link time,
282	 * to deal with references from .exit.text
283	 */
284	.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
285		EXIT_DATA
286	}
287
288	/* freed after init ends here */
289	. = ALIGN(PAGE_SIZE);
290	__init_end = .;
291
292/*
293 * And now the various read/write data
294 */
295
296	. = ALIGN(PAGE_SIZE);
297	_sdata = .;
298
299#ifdef CONFIG_PPC32
300	.data : AT(ADDR(.data) - LOAD_OFFSET) {
301		DATA_DATA
302#ifdef CONFIG_UBSAN
303		*(.data..Lubsan_data*)
304		*(.data..Lubsan_type*)
305#endif
306		*(.data.rel*)
307		*(SDATA_MAIN)
308		*(.sdata2)
309		*(.got.plt) *(.got)
310		*(.plt)
311		*(.branch_lt)
312	}
313#else
314	.data : AT(ADDR(.data) - LOAD_OFFSET) {
315		DATA_DATA
316		*(.data.rel*)
317		*(.toc1)
318		*(.branch_lt)
319	}
320
321	.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
322		__start_opd = .;
323		KEEP(*(.opd))
324		__end_opd = .;
325	}
326
327	. = ALIGN(256);
328	.got : AT(ADDR(.got) - LOAD_OFFSET) {
329		__toc_start = .;
330#ifndef CONFIG_RELOCATABLE
331		__prom_init_toc_start = .;
332		arch/powerpc/kernel/prom_init.o*(.toc .got)
333		__prom_init_toc_end = .;
334#endif
335		*(.got)
336		*(.toc)
337	}
338#endif
339
340	/* The initial task and kernel stack */
341	INIT_TASK_DATA_SECTION(THREAD_ALIGN)
342
343	.data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
344		PAGE_ALIGNED_DATA(PAGE_SIZE)
345	}
346
347	.data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
348		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
349	}
350
351	.data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
352		READ_MOSTLY_DATA(L1_CACHE_BYTES)
353	}
354
355	. = ALIGN(PAGE_SIZE);
356	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
357		NOSAVE_DATA
358	}
359
360	BUG_TABLE
361
362	. = ALIGN(PAGE_SIZE);
363	_edata  =  .;
364	PROVIDE32 (edata = .);
365
366/*
367 * And finally the bss
368 */
369
370	BSS_SECTION(0, 0, 0)
371
372	. = ALIGN(PAGE_SIZE);
373	_end = . ;
374	PROVIDE32 (end = .);
375
376	STABS_DEBUG
377	DWARF_DEBUG
378	ELF_DETAILS
379
380	DISCARDS
381	/DISCARD/ : {
382		*(*.EMB.apuinfo)
383		*(.glink .iplt .plt .rela* .comment)
384		*(.gnu.version*)
385		*(.gnu.attributes)
386		*(.eh_frame)
387	}
388}
389