Merge tag 'staging-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[deliverable/linux.git] / arch / xtensa / kernel / vmlinux.lds.S
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1/*
2 * arch/xtensa/kernel/vmlinux.lds.S
3 *
4 * Xtensa linker script
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 *
2d1c645c 10 * Copyright (C) 2001 - 2008 Tensilica Inc.
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11 *
12 * Chris Zankel <chris@zankel.net>
13 * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
14 * Joe Taylor <joe@tensilica.com, joetylr@yahoo.com>
15 */
16
17#include <asm-generic/vmlinux.lds.h>
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18#include <asm/page.h>
19#include <asm/thread_info.h>
5a0015d6 20
e85e335f 21#include <asm/vectors.h>
367b8112 22#include <variant/core.h>
6770fa02 23#include <platform/hardware.h>
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24OUTPUT_ARCH(xtensa)
25ENTRY(_start)
26
173d6681 27#ifdef __XTENSA_EB__
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28jiffies = jiffies_64 + 4;
29#else
30jiffies = jiffies_64;
31#endif
32
6770fa02 33#ifndef KERNELOFFSET
e85e335f 34#define KERNELOFFSET 0xd0003000
6770fa02 35#endif
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36
37/* Note: In the following macros, it would be nice to specify only the
38 vector name and section kind and construct "sym" and "section" using
39 CPP concatenation, but that does not work reliably. Concatenating a
40 string with "." produces an invalid token. CPP will not print a
41 warning because it thinks this is an assembly file, but it leaves
42 them as multiple tokens and there may or may not be whitespace
43 between them. */
44
45/* Macro for a relocation entry */
46
47#define RELOCATE_ENTRY(sym, section) \
48 LONG(sym ## _start); \
49 LONG(sym ## _end); \
50 LONG(LOADADDR(section))
51
52/* Macro to define a section for a vector.
53 *
54 * Use of the MIN function catches the types of errors illustrated in
55 * the following example:
56 *
57 * Assume the section .DoubleExceptionVector.literal is completely
58 * full. Then a programmer adds code to .DoubleExceptionVector.text
59 * that produces another literal. The final literal position will
60 * overlay onto the first word of the adjacent code section
61 * .DoubleExceptionVector.text. (In practice, the literals will
62 * overwrite the code, and the first few instructions will be
63 * garbage.)
64 */
65
66#define SECTION_VECTOR(sym, section, addr, max_prevsec_size, prevsec) \
67 section addr : AT((MIN(LOADADDR(prevsec) + max_prevsec_size, \
68 LOADADDR(prevsec) + SIZEOF(prevsec)) + 3) & ~ 3) \
69 { \
70 . = ALIGN(4); \
71 sym ## _start = ABSOLUTE(.); \
72 *(section) \
73 sym ## _end = ABSOLUTE(.); \
74 }
75
76/*
77 * Mapping of input sections to output sections when linking.
78 */
79
80SECTIONS
81{
173d6681 82 . = KERNELOFFSET;
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83 /* .text section */
84
85 _text = .;
86 _stext = .;
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87
88 .text :
89 {
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90 /* The HEAD_TEXT section must be the first section! */
91 HEAD_TEXT
78f3cdfa 92 TEXT_TEXT
5a0015d6 93 VMLINUX_SYMBOL(__sched_text_start) = .;
813e6783 94 *(.sched.literal .sched.text)
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95 VMLINUX_SYMBOL(__sched_text_end) = .;
96 VMLINUX_SYMBOL(__lock_text_start) = .;
813e6783 97 *(.spinlock.literal .spinlock.text)
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98 VMLINUX_SYMBOL(__lock_text_end) = .;
99
100 }
101 _etext = .;
de4f6e5b 102 PROVIDE (etext = .);
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103
104 . = ALIGN(16);
105
106 RODATA
107
108 /* Relocation table */
109
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110 .fixup : { *(.fixup) }
111
cd3db323 112 EXCEPTION_TABLE(16)
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113 /* Data section */
114
5e7b6ed8 115 _sdata = .;
cd3db323 116 RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)
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117 _edata = .;
118
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119 /* Initialization code and data: */
120
cd3db323 121 . = ALIGN(PAGE_SIZE);
5a0015d6 122 __init_begin = .;
cd3db323 123 INIT_TEXT_SECTION(PAGE_SIZE)
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124
125 .init.data :
126 {
01ba2bdc 127 INIT_DATA
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128 . = ALIGN(0x4);
129 __tagtable_begin = .;
130 *(.taglist)
131 __tagtable_end = .;
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132
133 . = ALIGN(16);
134 __boot_reloc_table_start = ABSOLUTE(.);
135
136 RELOCATE_ENTRY(_WindowVectors_text,
137 .WindowVectors.text);
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138#if XCHAL_EXCM_LEVEL >= 2
139 RELOCATE_ENTRY(_Level2InterruptVector_text,
140 .Level2InterruptVector.text);
141#endif
142#if XCHAL_EXCM_LEVEL >= 3
143 RELOCATE_ENTRY(_Level3InterruptVector_text,
144 .Level3InterruptVector.text);
145#endif
146#if XCHAL_EXCM_LEVEL >= 4
147 RELOCATE_ENTRY(_Level4InterruptVector_text,
148 .Level4InterruptVector.text);
149#endif
150#if XCHAL_EXCM_LEVEL >= 5
151 RELOCATE_ENTRY(_Level5InterruptVector_text,
152 .Level5InterruptVector.text);
153#endif
154#if XCHAL_EXCM_LEVEL >= 6
155 RELOCATE_ENTRY(_Level6InterruptVector_text,
156 .Level6InterruptVector.text);
157#endif
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158 RELOCATE_ENTRY(_KernelExceptionVector_text,
159 .KernelExceptionVector.text);
160 RELOCATE_ENTRY(_UserExceptionVector_text,
161 .UserExceptionVector.text);
162 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
163 .DoubleExceptionVector.literal);
164 RELOCATE_ENTRY(_DoubleExceptionVector_text,
165 .DoubleExceptionVector.text);
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166 RELOCATE_ENTRY(_DebugInterruptVector_text,
167 .DebugInterruptVector.text);
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168#if defined(CONFIG_SMP)
169 RELOCATE_ENTRY(_SecondaryResetVector_literal,
170 .SecondaryResetVector.literal);
171 RELOCATE_ENTRY(_SecondaryResetVector_text,
172 .SecondaryResetVector.text);
173#endif
174
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175
176 __boot_reloc_table_end = ABSOLUTE(.) ;
5a0015d6 177
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178 INIT_SETUP(XCHAL_ICACHE_LINESIZE)
179 INIT_CALLS
180 CON_INITCALL
181 SECURITY_INITCALL
182 INIT_RAM_FS
5a0015d6 183 }
de4f6e5b 184
0415b00d 185 PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)
de4f6e5b 186
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187 /* We need this dummy segment here */
188
189 . = ALIGN(4);
190 .dummy : { LONG(0) }
191
192 /* The vectors are relocated to the real position at startup time */
193
194 SECTION_VECTOR (_WindowVectors_text,
195 .WindowVectors.text,
e85e335f 196 WINDOW_VECTORS_VADDR, 4,
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197 .dummy)
198 SECTION_VECTOR (_DebugInterruptVector_literal,
199 .DebugInterruptVector.literal,
e85e335f 200 DEBUG_VECTOR_VADDR - 4,
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201 SIZEOF(.WindowVectors.text),
202 .WindowVectors.text)
203 SECTION_VECTOR (_DebugInterruptVector_text,
204 .DebugInterruptVector.text,
e85e335f 205 DEBUG_VECTOR_VADDR,
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206 4,
207 .DebugInterruptVector.literal)
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208#undef LAST
209#define LAST .DebugInterruptVector.text
210#if XCHAL_EXCM_LEVEL >= 2
211 SECTION_VECTOR (_Level2InterruptVector_text,
212 .Level2InterruptVector.text,
e85e335f 213 INTLEVEL2_VECTOR_VADDR,
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214 SIZEOF(LAST), LAST)
215# undef LAST
216# define LAST .Level2InterruptVector.text
217#endif
218#if XCHAL_EXCM_LEVEL >= 3
219 SECTION_VECTOR (_Level3InterruptVector_text,
220 .Level3InterruptVector.text,
e85e335f 221 INTLEVEL3_VECTOR_VADDR,
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222 SIZEOF(LAST), LAST)
223# undef LAST
224# define LAST .Level3InterruptVector.text
225#endif
226#if XCHAL_EXCM_LEVEL >= 4
227 SECTION_VECTOR (_Level4InterruptVector_text,
228 .Level4InterruptVector.text,
e85e335f 229 INTLEVEL4_VECTOR_VADDR,
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230 SIZEOF(LAST), LAST)
231# undef LAST
232# define LAST .Level4InterruptVector.text
233#endif
234#if XCHAL_EXCM_LEVEL >= 5
235 SECTION_VECTOR (_Level5InterruptVector_text,
236 .Level5InterruptVector.text,
e85e335f 237 INTLEVEL5_VECTOR_VADDR,
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238 SIZEOF(LAST), LAST)
239# undef LAST
240# define LAST .Level5InterruptVector.text
241#endif
242#if XCHAL_EXCM_LEVEL >= 6
243 SECTION_VECTOR (_Level6InterruptVector_text,
244 .Level6InterruptVector.text,
e85e335f 245 INTLEVEL6_VECTOR_VADDR,
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246 SIZEOF(LAST), LAST)
247# undef LAST
248# define LAST .Level6InterruptVector.text
249#endif
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250 SECTION_VECTOR (_KernelExceptionVector_literal,
251 .KernelExceptionVector.literal,
e85e335f 252 KERNEL_VECTOR_VADDR - 4,
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253 SIZEOF(LAST), LAST)
254#undef LAST
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255 SECTION_VECTOR (_KernelExceptionVector_text,
256 .KernelExceptionVector.text,
e85e335f 257 KERNEL_VECTOR_VADDR,
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258 4,
259 .KernelExceptionVector.literal)
260 SECTION_VECTOR (_UserExceptionVector_literal,
261 .UserExceptionVector.literal,
e85e335f 262 USER_VECTOR_VADDR - 4,
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263 SIZEOF(.KernelExceptionVector.text),
264 .KernelExceptionVector.text)
265 SECTION_VECTOR (_UserExceptionVector_text,
266 .UserExceptionVector.text,
e85e335f 267 USER_VECTOR_VADDR,
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268 4,
269 .UserExceptionVector.literal)
270 SECTION_VECTOR (_DoubleExceptionVector_literal,
271 .DoubleExceptionVector.literal,
17290231 272 DOUBLEEXC_VECTOR_VADDR - 40,
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273 SIZEOF(.UserExceptionVector.text),
274 .UserExceptionVector.text)
275 SECTION_VECTOR (_DoubleExceptionVector_text,
276 .DoubleExceptionVector.text,
e85e335f 277 DOUBLEEXC_VECTOR_VADDR,
17290231 278 40,
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279 .DoubleExceptionVector.literal)
280
281 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
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282
283#if defined(CONFIG_SMP)
284
285 SECTION_VECTOR (_SecondaryResetVector_literal,
286 .SecondaryResetVector.literal,
287 RESET_VECTOR1_VADDR - 4,
288 SIZEOF(.DoubleExceptionVector.text),
289 .DoubleExceptionVector.text)
290
291 SECTION_VECTOR (_SecondaryResetVector_text,
292 .SecondaryResetVector.text,
293 RESET_VECTOR1_VADDR,
294 4,
295 .SecondaryResetVector.literal)
296
297 . = LOADADDR(.SecondaryResetVector.text)+SIZEOF(.SecondaryResetVector.text);
298
299#endif
300
cd3db323 301 . = ALIGN(PAGE_SIZE);
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302
303 __init_end = .;
304
cd3db323 305 BSS_SECTION(0, 8192, 0)
de4f6e5b 306
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307 _end = .;
308
309 /* only used by the boot loader */
310
311 . = ALIGN(0x10);
312 .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
313
e85e335f 314 .ResetVector.text RESET_VECTOR_VADDR :
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315 {
316 *(.ResetVector.text)
317 }
318
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319
320 /*
321 * This is a remapped copy of the Secondary Reset Vector Code.
322 * It keeps gdb in sync with the PC after switching
323 * to the temporary mapping used while setting up
324 * the V2 MMU mappings for Linux.
325 *
326 * Only debug information about this section is put in the kernel image.
327 */
328 .SecondaryResetVector.remapped_text 0x46000000 (INFO):
329 {
330 *(.SecondaryResetVector.remapped_text)
331 }
332
333
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334 .xt.lit : { *(.xt.lit) }
335 .xt.prop : { *(.xt.prop) }
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336
337 .debug 0 : { *(.debug) }
338 .line 0 : { *(.line) }
339 .debug_srcinfo 0 : { *(.debug_srcinfo) }
340 .debug_sfnames 0 : { *(.debug_sfnames) }
341 .debug_aranges 0 : { *(.debug_aranges) }
342 .debug_pubnames 0 : { *(.debug_pubnames) }
343 .debug_info 0 : { *(.debug_info) }
344 .debug_abbrev 0 : { *(.debug_abbrev) }
345 .debug_line 0 : { *(.debug_line) }
346 .debug_frame 0 : { *(.debug_frame) }
347 .debug_str 0 : { *(.debug_str) }
348 .debug_loc 0 : { *(.debug_loc) }
349 .debug_macinfo 0 : { *(.debug_macinfo) }
350 .debug_weaknames 0 : { *(.debug_weaknames) }
351 .debug_funcnames 0 : { *(.debug_funcnames) }
352 .debug_typenames 0 : { *(.debug_typenames) }
353 .debug_varnames 0 : { *(.debug_varnames) }
354
355 .xt.insn 0 :
356 {
357 *(.xt.insn)
358 *(.gnu.linkonce.x*)
359 }
360
361 .xt.lit 0 :
362 {
363 *(.xt.lit)
364 *(.gnu.linkonce.p*)
365 }
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366
367 /* Sections to be discarded */
368 DISCARDS
369 /DISCARD/ : { *(.exit.literal) }
5a0015d6 370}
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