blob: e6927fb2e65528e9bb5729c8d6d6aab37ae91177 [file] [log] [blame]
Paul Mackerrasc51e3a412005-11-05 10:36:59 +11001#ifdef CONFIG_PPC64
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +11002#define PROVIDE32(x) PROVIDE(__unused__##x)
Paul Mackerrasc51e3a412005-11-05 10:36:59 +11003#else
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +11004#define PROVIDE32(x) PROVIDE(x)
Paul Mackerrasc51e3a412005-11-05 10:36:59 +11005#endif
Kumar Gala4846c5d2008-04-16 05:52:26 +10006#include <asm/page.h>
Paul Mackerras14cf11a2005-09-26 16:04:21 +10007#include <asm-generic/vmlinux.lds.h>
Tony Breedsbd67fcf2007-07-04 14:04:31 +10008#include <asm/cache.h>
Paul Mackerras14cf11a2005-09-26 16:04:21 +10009
Michael Ellermane19e4ab2005-11-03 16:03:06 +110010ENTRY(_stext)
11
Segher Boessenkoolc69cccc2008-07-22 09:03:45 +100012PHDRS {
13 kernel PT_LOAD FLAGS(7); /* RWX */
14 notes PT_NOTE FLAGS(0);
15 dummy PT_NOTE FLAGS(0);
16
17 /* binutils < 2.18 has a bug that makes it misbehave when taking an
18 ELF file with all segments at load address 0 as input. This
19 happens when running "strip" on vmlinux, because of the AT() magic
20 in this linker script. People using GCC >= 4.2 won't run into
21 this problem, because the "build-id" support will put some data
22 into the "notes" segment (at a non-zero load address).
23
24 To work around this, we force some data into both the "dummy"
25 segment and the kernel segment, so the dummy segment will get a
26 non-zero load address. It's not enough to always create the
27 "notes" segment, since if nothing gets assigned to it, its load
28 address will be zero. */
29}
30
Stephen Rothwellcabb5582005-09-30 16:16:52 +100031#ifdef CONFIG_PPC64
32OUTPUT_ARCH(powerpc:common64)
33jiffies = jiffies_64;
34#else
Paul Mackerras14cf11a2005-09-26 16:04:21 +100035OUTPUT_ARCH(powerpc:common)
36jiffies = jiffies_64 + 4;
Stephen Rothwellcabb5582005-09-30 16:16:52 +100037#endif
Paul Mackerras14cf11a2005-09-26 16:04:21 +100038SECTIONS
39{
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110040 /* Sections to be discarded. */
41 /DISCARD/ : {
42 *(.exitcall.exit)
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +010043 EXIT_DATA
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110044 }
Stephen Rothwellcabb5582005-09-30 16:16:52 +100045
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110046 . = KERNELBASE;
Stephen Rothwellcabb5582005-09-30 16:16:52 +100047
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110048/*
49 * Text, read only data and other permanent read-only sections
50 */
51
52 /* Text and gots */
Kumar Gala366234f2008-04-16 05:52:28 +100053 .text : AT(ADDR(.text) - LOAD_OFFSET) {
Kumar Gala748a7682007-09-13 15:42:35 -050054 ALIGN_FUNCTION();
55 *(.text.head)
Eric W. Biedermanfd593d12006-12-07 02:14:04 +010056 _text = .;
Michael Ellermanfac23fe2008-06-24 11:32:54 +100057 *(.text .fixup .text.init.refok .exit.text.refok __ftr_alt_*)
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110058 SCHED_TEXT
59 LOCK_TEXT
60 KPROBES_TEXT
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110061
Stephen Rothwellcabb5582005-09-30 16:16:52 +100062#ifdef CONFIG_PPC32
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110063 *(.got1)
64 __got2_start = .;
65 *(.got2)
66 __got2_end = .;
67#endif /* CONFIG_PPC32 */
Paul Mackerras14cf11a2005-09-26 16:04:21 +100068
Segher Boessenkoolc69cccc2008-07-22 09:03:45 +100069 } :kernel
Paul Mackerras14cf11a2005-09-26 16:04:21 +100070
Stephen Rothwell303996d2008-09-02 15:04:09 +100071 . = ALIGN(PAGE_SIZE);
72 _etext = .;
73 PROVIDE32 (etext = .);
74
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110075 /* Read-only data */
76 RODATA
Paul Mackerras14cf11a2005-09-26 16:04:21 +100077
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110078 /* Exception & bug tables */
Kumar Gala366234f2008-04-16 05:52:28 +100079 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
Paul Mackerras14cf11a2005-09-26 16:04:21 +100080 __start___ex_table = .;
81 *(__ex_table)
82 __stop___ex_table = .;
83 }
84
Segher Boessenkoolc69cccc2008-07-22 09:03:45 +100085 NOTES :kernel :notes
86
87 /* The dummy segment contents for the bug workaround mentioned above
88 near PHDRS. */
Segher Boessenkool80c60bf2008-07-25 10:08:41 +100089 .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) {
Segher Boessenkoolc69cccc2008-07-22 09:03:45 +100090 LONG(0xf177)
91 } :kernel :dummy
Roland McGrath8fb775e2007-07-19 01:48:38 -070092
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110093/*
94 * Init sections discarded at runtime
95 */
96 . = ALIGN(PAGE_SIZE);
97 __init_begin = .;
98
Kumar Gala366234f2008-04-16 05:52:28 +100099 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100100 _sinittext = .;
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100101 INIT_TEXT
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100102 _einittext = .;
Segher Boessenkoolc69cccc2008-07-22 09:03:45 +1000103 } :kernel
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100104
105 /* .exit.text is discarded at runtime, not link time,
106 * to deal with references from __bug_table
107 */
Kumar Gala366234f2008-04-16 05:52:28 +1000108 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100109 EXIT_TEXT
110 }
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100111
Kumar Gala366234f2008-04-16 05:52:28 +1000112 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100113 INIT_DATA
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100114 __vtop_table_begin = .;
115 *(.vtop_fixup);
116 __vtop_table_end = .;
117 __ptov_table_begin = .;
118 *(.ptov_fixup);
119 __ptov_table_end = .;
Stephen Rothwellc4e3ea22006-05-19 17:04:48 +1000120#ifdef CONFIG_PPC_ISERIES
121 __dt_strings_start = .;
122 *(.dt_strings);
123 __dt_strings_end = .;
124#endif
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100125 }
126
127 . = ALIGN(16);
Kumar Gala366234f2008-04-16 05:52:28 +1000128 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100129 __setup_start = .;
130 *(.init.setup)
131 __setup_end = .;
132 }
133
Kumar Gala366234f2008-04-16 05:52:28 +1000134 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100135 __initcall_start = .;
Andrew Morton61ce1ef2006-10-27 11:41:44 -0700136 INITCALLS
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100137 __initcall_end = .;
138 }
139
Kumar Gala366234f2008-04-16 05:52:28 +1000140 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100141 __con_initcall_start = .;
142 *(.con_initcall.init)
143 __con_initcall_end = .;
144 }
145
146 SECURITY_INIT
147
148 . = ALIGN(8);
Kumar Gala366234f2008-04-16 05:52:28 +1000149 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000150 __start___ftr_fixup = .;
151 *(__ftr_fixup)
152 __stop___ftr_fixup = .;
153 }
Kumar Gala2d1b2022008-07-02 01:16:40 +1000154 . = ALIGN(8);
155 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
156 __start___lwsync_fixup = .;
157 *(__lwsync_fixup)
158 __stop___lwsync_fixup = .;
159 }
Stephen Rothwell3f639ee2006-09-25 18:19:00 +1000160#ifdef CONFIG_PPC64
161 . = ALIGN(8);
Kumar Gala366234f2008-04-16 05:52:28 +1000162 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
Stephen Rothwell3f639ee2006-09-25 18:19:00 +1000163 __start___fw_ftr_fixup = .;
164 *(__fw_ftr_fixup)
165 __stop___fw_ftr_fixup = .;
166 }
167#endif
Jean-Paul Saman67d38222007-02-10 01:44:44 -0800168#ifdef CONFIG_BLK_DEV_INITRD
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100169 . = ALIGN(PAGE_SIZE);
Kumar Gala366234f2008-04-16 05:52:28 +1000170 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100171 __initramfs_start = .;
172 *(.init.ramfs)
173 __initramfs_end = .;
174 }
Jean-Paul Saman67d38222007-02-10 01:44:44 -0800175#endif
Jeremy Fitzhardingeb6e35902007-05-02 19:27:12 +0200176 . = ALIGN(PAGE_SIZE);
Kumar Gala366234f2008-04-16 05:52:28 +1000177 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100178 __per_cpu_start = .;
179 *(.data.percpu)
Fenghua Yu5fb7dc32007-07-19 01:48:12 -0700180 *(.data.percpu.shared_aligned)
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100181 __per_cpu_end = .;
182 }
183
184 . = ALIGN(8);
Kumar Gala366234f2008-04-16 05:52:28 +1000185 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100186 __machine_desc_start = . ;
187 *(.machine.desc)
188 __machine_desc_end = . ;
189 }
Paul Mackerras549e8152008-08-30 11:43:47 +1000190 . = ALIGN(8);
191 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) { *(.dynsym) }
192 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
193 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
194 {
195 __dynamic_start = .;
196 *(.dynamic)
197 }
198 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
199 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
200 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
201 {
202 __rela_dyn_start = .;
203 *(.rela*)
204 }
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100205
206 /* freed after init ends here */
207 . = ALIGN(PAGE_SIZE);
208 __init_end = .;
209
210/*
211 * And now the various read/write data
212 */
213
214 . = ALIGN(PAGE_SIZE);
215 _sdata = .;
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000216
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000217#ifdef CONFIG_PPC32
Kumar Gala366234f2008-04-16 05:52:28 +1000218 .data : AT(ADDR(.data) - LOAD_OFFSET) {
Sam Ravnborgca967252007-05-17 13:38:44 +0200219 DATA_DATA
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100220 *(.sdata)
221 *(.got.plt) *(.got)
222 }
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000223#else
Kumar Gala366234f2008-04-16 05:52:28 +1000224 .data : AT(ADDR(.data) - LOAD_OFFSET) {
Mathieu Desnoyers3ae0aa92007-06-16 22:29:04 -0400225 DATA_DATA
226 *(.data.rel*)
227 *(.toc1)
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100228 *(.branch_lt)
229 }
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000230
Kumar Gala366234f2008-04-16 05:52:28 +1000231 .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100232 *(.opd)
233 }
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000234
Kumar Gala366234f2008-04-16 05:52:28 +1000235 .got : AT(ADDR(.got) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100236 __toc_start = .;
237 *(.got)
238 *(.toc)
239 }
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000240#endif
Paul Mackerras4a288562005-10-10 22:38:46 +1000241
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100242 . = ALIGN(PAGE_SIZE);
243 _edata = .;
244 PROVIDE32 (edata = .);
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000245
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100246 /* The initial task and kernel stack */
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000247#ifdef CONFIG_PPC32
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100248 . = ALIGN(8192);
249#else
250 . = ALIGN(16384);
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000251#endif
Kumar Gala366234f2008-04-16 05:52:28 +1000252 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100253 *(.data.init_task)
254 }
255
256 . = ALIGN(PAGE_SIZE);
Kumar Gala366234f2008-04-16 05:52:28 +1000257 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100258 *(.data.page_aligned)
259 }
260
Kumar Gala366234f2008-04-16 05:52:28 +1000261 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100262 *(.data.cacheline_aligned)
263 }
264
Tony Breedsbd67fcf2007-07-04 14:04:31 +1000265 . = ALIGN(L1_CACHE_BYTES);
Kumar Gala366234f2008-04-16 05:52:28 +1000266 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
Tony Breedsbd67fcf2007-07-04 14:04:31 +1000267 *(.data.read_mostly)
268 }
269
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100270 . = ALIGN(PAGE_SIZE);
Kumar Gala366234f2008-04-16 05:52:28 +1000271 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100272 __nosave_begin = .;
273 *(.data.nosave)
274 . = ALIGN(PAGE_SIZE);
275 __nosave_end = .;
276 }
277
278/*
279 * And finally the bss
280 */
281
Kumar Gala366234f2008-04-16 05:52:28 +1000282 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100283 __bss_start = .;
284 *(.sbss) *(.scommon)
285 *(.dynbss)
286 *(.bss)
287 *(COMMON)
288 __bss_stop = .;
289 }
290
291 . = ALIGN(PAGE_SIZE);
292 _end = . ;
293 PROVIDE32 (end = .);
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000294}