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