1#ifdef CONFIG_PPC64
2#define PROVIDE32(x)	PROVIDE(__unused__##x)
3#else
4#define PROVIDE32(x)	PROVIDE(x)
5#endif
6#include <asm/page.h>
7#include <asm-generic/vmlinux.lds.h>
8#include <asm/cache.h>
9#include <asm/thread_info.h>
10
11ENTRY(_stext)
12
13PHDRS {
14	kernel PT_LOAD FLAGS(7); /* RWX */
15	notes PT_NOTE FLAGS(0);
16	dummy PT_NOTE FLAGS(0);
17
18	/* binutils < 2.18 has a bug that makes it misbehave when taking an
19	   ELF file with all segments at load address 0 as input.  This
20	   happens when running "strip" on vmlinux, because of the AT() magic
21	   in this linker script.  People using GCC >= 4.2 won't run into
22	   this problem, because the "build-id" support will put some data
23	   into the "notes" segment (at a non-zero load address).
24
25	   To work around this, we force some data into both the "dummy"
26	   segment and the kernel segment, so the dummy segment will get a
27	   non-zero load address.  It's not enough to always create the
28	   "notes" segment, since if nothing gets assigned to it, its load
29	   address will be zero.  */
30}
31
32#ifdef CONFIG_PPC64
33OUTPUT_ARCH(powerpc:common64)
34jiffies = jiffies_64;
35#else
36OUTPUT_ARCH(powerpc:common)
37jiffies = jiffies_64 + 4;
38#endif
39SECTIONS
40{
41	. = KERNELBASE;
42
43/*
44 * Text, read only data and other permanent read-only sections
45 */
46
47	/* Text and gots */
48	.text : AT(ADDR(.text) - LOAD_OFFSET) {
49		ALIGN_FUNCTION();
50		HEAD_TEXT
51		_text = .;
52		/* careful! __ftr_alt_* sections need to be close to .text */
53		*(.text .fixup __ftr_alt_* .ref.text)
54		SCHED_TEXT
55		LOCK_TEXT
56		KPROBES_TEXT
57		IRQENTRY_TEXT
58		SOFTIRQENTRY_TEXT
59
60#ifdef CONFIG_PPC32
61		*(.got1)
62		__got2_start = .;
63		*(.got2)
64		__got2_end = .;
65#endif /* CONFIG_PPC32 */
66
67	} :kernel
68
69	. = ALIGN(PAGE_SIZE);
70	_etext = .;
71	PROVIDE32 (etext = .);
72
73	/* Read-only data */
74	RODATA
75
76	EXCEPTION_TABLE(0)
77
78	NOTES :kernel :notes
79
80	/* The dummy segment contents for the bug workaround mentioned above
81	   near PHDRS.  */
82	.dummy : AT(ADDR(.dummy) - LOAD_OFFSET) {
83		LONG(0)
84		LONG(0)
85		LONG(0)
86	} :kernel :dummy
87
88/*
89 * Init sections discarded at runtime
90 */
91	. = ALIGN(PAGE_SIZE);
92	__init_begin = .;
93	INIT_TEXT_SECTION(PAGE_SIZE) :kernel
94
95	/* .exit.text is discarded at runtime, not link time,
96	 * to deal with references from __bug_table
97	 */
98	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
99		EXIT_TEXT
100	}
101
102	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
103		INIT_DATA
104		__vtop_table_begin = .;
105		*(.vtop_fixup);
106		__vtop_table_end = .;
107		__ptov_table_begin = .;
108		*(.ptov_fixup);
109		__ptov_table_end = .;
110	}
111
112	.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
113		INIT_SETUP(16)
114	}
115
116	.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
117		INIT_CALLS
118	}
119
120	.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
121		CON_INITCALL
122	}
123
124	SECURITY_INIT
125
126	. = ALIGN(8);
127	__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
128		__start___ftr_fixup = .;
129		*(__ftr_fixup)
130		__stop___ftr_fixup = .;
131	}
132	. = ALIGN(8);
133	__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
134		__start___mmu_ftr_fixup = .;
135		*(__mmu_ftr_fixup)
136		__stop___mmu_ftr_fixup = .;
137	}
138	. = ALIGN(8);
139	__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
140		__start___lwsync_fixup = .;
141		*(__lwsync_fixup)
142		__stop___lwsync_fixup = .;
143	}
144#ifdef CONFIG_PPC64
145	. = ALIGN(8);
146	__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
147		__start___fw_ftr_fixup = .;
148		*(__fw_ftr_fixup)
149		__stop___fw_ftr_fixup = .;
150	}
151#endif
152	.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
153		INIT_RAM_FS
154	}
155
156	PERCPU_SECTION(L1_CACHE_BYTES)
157
158	. = ALIGN(8);
159	.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
160		__machine_desc_start = . ;
161		*(.machine.desc)
162		__machine_desc_end = . ;
163	}
164#ifdef CONFIG_RELOCATABLE
165	. = ALIGN(8);
166	.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
167	{
168#ifdef CONFIG_RELOCATABLE_PPC32
169		__dynamic_symtab = .;
170#endif
171		*(.dynsym)
172	}
173	.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
174	.dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
175	{
176		__dynamic_start = .;
177		*(.dynamic)
178	}
179	.hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
180	.interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
181	.rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
182	{
183		__rela_dyn_start = .;
184		*(.rela*)
185	}
186#endif
187	/* .exit.data is discarded at runtime, not link time,
188	 * to deal with references from .exit.text
189	 */
190	.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
191		EXIT_DATA
192	}
193
194	/* freed after init ends here */
195	. = ALIGN(PAGE_SIZE);
196	__init_end = .;
197
198/*
199 * And now the various read/write data
200 */
201
202	. = ALIGN(PAGE_SIZE);
203	_sdata = .;
204
205#ifdef CONFIG_PPC32
206	.data : AT(ADDR(.data) - LOAD_OFFSET) {
207		DATA_DATA
208		*(.sdata)
209		*(.got.plt) *(.got)
210	}
211#else
212	.data : AT(ADDR(.data) - LOAD_OFFSET) {
213		DATA_DATA
214		*(.data.rel*)
215		*(.toc1)
216		*(.branch_lt)
217	}
218
219	.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
220		*(.opd)
221	}
222
223	. = ALIGN(256);
224	.got : AT(ADDR(.got) - LOAD_OFFSET) {
225		__toc_start = .;
226#ifndef CONFIG_RELOCATABLE
227		__prom_init_toc_start = .;
228		arch/powerpc/kernel/prom_init.o*(.toc .got)
229		__prom_init_toc_end = .;
230#endif
231		*(.got)
232		*(.toc)
233	}
234#endif
235
236	/* The initial task and kernel stack */
237	INIT_TASK_DATA_SECTION(THREAD_SIZE)
238
239	.data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
240		PAGE_ALIGNED_DATA(PAGE_SIZE)
241	}
242
243	.data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
244		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
245	}
246
247	.data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
248		READ_MOSTLY_DATA(L1_CACHE_BYTES)
249	}
250
251	. = ALIGN(PAGE_SIZE);
252	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
253		NOSAVE_DATA
254	}
255
256	. = ALIGN(PAGE_SIZE);
257	_edata  =  .;
258	PROVIDE32 (edata = .);
259
260/*
261 * And finally the bss
262 */
263
264	BSS_SECTION(0, 0, 0)
265
266	. = ALIGN(PAGE_SIZE);
267	_end = . ;
268	PROVIDE32 (end = .);
269
270	/* Sections to be discarded. */
271	DISCARDS
272}
273