Merge branch 'postmerge' into for-linus
[GitHub/mt8127/android_kernel_alcatel_ttab.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
367b8112 21#include <variant/core.h>
6770fa02 22#include <platform/hardware.h>
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23OUTPUT_ARCH(xtensa)
24ENTRY(_start)
25
173d6681 26#ifdef __XTENSA_EB__
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27jiffies = jiffies_64 + 4;
28#else
29jiffies = jiffies_64;
30#endif
31
6770fa02 32#ifndef KERNELOFFSET
173d6681 33#define KERNELOFFSET 0xd0001000
6770fa02 34#endif
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35
36/* Note: In the following macros, it would be nice to specify only the
37 vector name and section kind and construct "sym" and "section" using
38 CPP concatenation, but that does not work reliably. Concatenating a
39 string with "." produces an invalid token. CPP will not print a
40 warning because it thinks this is an assembly file, but it leaves
41 them as multiple tokens and there may or may not be whitespace
42 between them. */
43
44/* Macro for a relocation entry */
45
46#define RELOCATE_ENTRY(sym, section) \
47 LONG(sym ## _start); \
48 LONG(sym ## _end); \
49 LONG(LOADADDR(section))
50
51/* Macro to define a section for a vector.
52 *
53 * Use of the MIN function catches the types of errors illustrated in
54 * the following example:
55 *
56 * Assume the section .DoubleExceptionVector.literal is completely
57 * full. Then a programmer adds code to .DoubleExceptionVector.text
58 * that produces another literal. The final literal position will
59 * overlay onto the first word of the adjacent code section
60 * .DoubleExceptionVector.text. (In practice, the literals will
61 * overwrite the code, and the first few instructions will be
62 * garbage.)
63 */
64
65#define SECTION_VECTOR(sym, section, addr, max_prevsec_size, prevsec) \
66 section addr : AT((MIN(LOADADDR(prevsec) + max_prevsec_size, \
67 LOADADDR(prevsec) + SIZEOF(prevsec)) + 3) & ~ 3) \
68 { \
69 . = ALIGN(4); \
70 sym ## _start = ABSOLUTE(.); \
71 *(section) \
72 sym ## _end = ABSOLUTE(.); \
73 }
74
75/*
76 * Mapping of input sections to output sections when linking.
77 */
78
79SECTIONS
80{
173d6681 81 . = KERNELOFFSET;
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82 /* .text section */
83
84 _text = .;
85 _stext = .;
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86
87 .text :
88 {
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89 /* The HEAD_TEXT section must be the first section! */
90 HEAD_TEXT
78f3cdfa 91 TEXT_TEXT
5a0015d6 92 VMLINUX_SYMBOL(__sched_text_start) = .;
813e6783 93 *(.sched.literal .sched.text)
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94 VMLINUX_SYMBOL(__sched_text_end) = .;
95 VMLINUX_SYMBOL(__lock_text_start) = .;
813e6783 96 *(.spinlock.literal .spinlock.text)
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97 VMLINUX_SYMBOL(__lock_text_end) = .;
98
99 }
100 _etext = .;
de4f6e5b 101 PROVIDE (etext = .);
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102
103 . = ALIGN(16);
104
105 RODATA
106
107 /* Relocation table */
108
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109 .fixup : { *(.fixup) }
110
cd3db323 111 EXCEPTION_TABLE(16)
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112 /* Data section */
113
5e7b6ed8 114 _sdata = .;
cd3db323 115 RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)
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116 _edata = .;
117
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118 /* Initialization code and data: */
119
cd3db323 120 . = ALIGN(PAGE_SIZE);
5a0015d6 121 __init_begin = .;
cd3db323 122 INIT_TEXT_SECTION(PAGE_SIZE)
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123
124 .init.data :
125 {
01ba2bdc 126 INIT_DATA
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127 . = ALIGN(0x4);
128 __tagtable_begin = .;
129 *(.taglist)
130 __tagtable_end = .;
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131
132 . = ALIGN(16);
133 __boot_reloc_table_start = ABSOLUTE(.);
134
135 RELOCATE_ENTRY(_WindowVectors_text,
136 .WindowVectors.text);
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137#if XCHAL_EXCM_LEVEL >= 2
138 RELOCATE_ENTRY(_Level2InterruptVector_text,
139 .Level2InterruptVector.text);
140#endif
141#if XCHAL_EXCM_LEVEL >= 3
142 RELOCATE_ENTRY(_Level3InterruptVector_text,
143 .Level3InterruptVector.text);
144#endif
145#if XCHAL_EXCM_LEVEL >= 4
146 RELOCATE_ENTRY(_Level4InterruptVector_text,
147 .Level4InterruptVector.text);
148#endif
149#if XCHAL_EXCM_LEVEL >= 5
150 RELOCATE_ENTRY(_Level5InterruptVector_text,
151 .Level5InterruptVector.text);
152#endif
153#if XCHAL_EXCM_LEVEL >= 6
154 RELOCATE_ENTRY(_Level6InterruptVector_text,
155 .Level6InterruptVector.text);
156#endif
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157 RELOCATE_ENTRY(_KernelExceptionVector_text,
158 .KernelExceptionVector.text);
159 RELOCATE_ENTRY(_UserExceptionVector_text,
160 .UserExceptionVector.text);
161 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
162 .DoubleExceptionVector.literal);
163 RELOCATE_ENTRY(_DoubleExceptionVector_text,
164 .DoubleExceptionVector.text);
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165 RELOCATE_ENTRY(_DebugInterruptVector_text,
166 .DebugInterruptVector.text);
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167
168 __boot_reloc_table_end = ABSOLUTE(.) ;
5a0015d6 169
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170 INIT_SETUP(XCHAL_ICACHE_LINESIZE)
171 INIT_CALLS
172 CON_INITCALL
173 SECURITY_INITCALL
174 INIT_RAM_FS
5a0015d6 175 }
de4f6e5b 176
0415b00d 177 PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)
de4f6e5b 178
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179 /* We need this dummy segment here */
180
181 . = ALIGN(4);
182 .dummy : { LONG(0) }
183
184 /* The vectors are relocated to the real position at startup time */
185
186 SECTION_VECTOR (_WindowVectors_text,
187 .WindowVectors.text,
188 XCHAL_WINDOW_VECTORS_VADDR, 4,
189 .dummy)
190 SECTION_VECTOR (_DebugInterruptVector_literal,
191 .DebugInterruptVector.literal,
173d6681 192 XCHAL_DEBUG_VECTOR_VADDR - 4,
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193 SIZEOF(.WindowVectors.text),
194 .WindowVectors.text)
195 SECTION_VECTOR (_DebugInterruptVector_text,
196 .DebugInterruptVector.text,
173d6681 197 XCHAL_DEBUG_VECTOR_VADDR,
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198 4,
199 .DebugInterruptVector.literal)
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200#undef LAST
201#define LAST .DebugInterruptVector.text
202#if XCHAL_EXCM_LEVEL >= 2
203 SECTION_VECTOR (_Level2InterruptVector_text,
204 .Level2InterruptVector.text,
205 XCHAL_INTLEVEL2_VECTOR_VADDR,
206 SIZEOF(LAST), LAST)
207# undef LAST
208# define LAST .Level2InterruptVector.text
209#endif
210#if XCHAL_EXCM_LEVEL >= 3
211 SECTION_VECTOR (_Level3InterruptVector_text,
212 .Level3InterruptVector.text,
213 XCHAL_INTLEVEL3_VECTOR_VADDR,
214 SIZEOF(LAST), LAST)
215# undef LAST
216# define LAST .Level3InterruptVector.text
217#endif
218#if XCHAL_EXCM_LEVEL >= 4
219 SECTION_VECTOR (_Level4InterruptVector_text,
220 .Level4InterruptVector.text,
221 XCHAL_INTLEVEL4_VECTOR_VADDR,
222 SIZEOF(LAST), LAST)
223# undef LAST
224# define LAST .Level4InterruptVector.text
225#endif
226#if XCHAL_EXCM_LEVEL >= 5
227 SECTION_VECTOR (_Level5InterruptVector_text,
228 .Level5InterruptVector.text,
229 XCHAL_INTLEVEL5_VECTOR_VADDR,
230 SIZEOF(LAST), LAST)
231# undef LAST
232# define LAST .Level5InterruptVector.text
233#endif
234#if XCHAL_EXCM_LEVEL >= 6
235 SECTION_VECTOR (_Level6InterruptVector_text,
236 .Level6InterruptVector.text,
237 XCHAL_INTLEVEL6_VECTOR_VADDR,
238 SIZEOF(LAST), LAST)
239# undef LAST
240# define LAST .Level6InterruptVector.text
241#endif
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242 SECTION_VECTOR (_KernelExceptionVector_literal,
243 .KernelExceptionVector.literal,
173d6681 244 XCHAL_KERNEL_VECTOR_VADDR - 4,
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245 SIZEOF(LAST), LAST)
246#undef LAST
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247 SECTION_VECTOR (_KernelExceptionVector_text,
248 .KernelExceptionVector.text,
173d6681 249 XCHAL_KERNEL_VECTOR_VADDR,
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250 4,
251 .KernelExceptionVector.literal)
252 SECTION_VECTOR (_UserExceptionVector_literal,
253 .UserExceptionVector.literal,
173d6681 254 XCHAL_USER_VECTOR_VADDR - 4,
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255 SIZEOF(.KernelExceptionVector.text),
256 .KernelExceptionVector.text)
257 SECTION_VECTOR (_UserExceptionVector_text,
258 .UserExceptionVector.text,
173d6681 259 XCHAL_USER_VECTOR_VADDR,
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260 4,
261 .UserExceptionVector.literal)
262 SECTION_VECTOR (_DoubleExceptionVector_literal,
263 .DoubleExceptionVector.literal,
264 XCHAL_DOUBLEEXC_VECTOR_VADDR - 16,
265 SIZEOF(.UserExceptionVector.text),
266 .UserExceptionVector.text)
267 SECTION_VECTOR (_DoubleExceptionVector_text,
268 .DoubleExceptionVector.text,
269 XCHAL_DOUBLEEXC_VECTOR_VADDR,
270 32,
271 .DoubleExceptionVector.literal)
272
273 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
cd3db323 274 . = ALIGN(PAGE_SIZE);
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275
276 __init_end = .;
277
cd3db323 278 BSS_SECTION(0, 8192, 0)
de4f6e5b 279
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280 _end = .;
281
282 /* only used by the boot loader */
283
284 . = ALIGN(0x10);
285 .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
286
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287 .ResetVector.text XCHAL_RESET_VECTOR_VADDR :
288 {
289 *(.ResetVector.text)
290 }
291
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292 .xt.lit : { *(.xt.lit) }
293 .xt.prop : { *(.xt.prop) }
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294
295 .debug 0 : { *(.debug) }
296 .line 0 : { *(.line) }
297 .debug_srcinfo 0 : { *(.debug_srcinfo) }
298 .debug_sfnames 0 : { *(.debug_sfnames) }
299 .debug_aranges 0 : { *(.debug_aranges) }
300 .debug_pubnames 0 : { *(.debug_pubnames) }
301 .debug_info 0 : { *(.debug_info) }
302 .debug_abbrev 0 : { *(.debug_abbrev) }
303 .debug_line 0 : { *(.debug_line) }
304 .debug_frame 0 : { *(.debug_frame) }
305 .debug_str 0 : { *(.debug_str) }
306 .debug_loc 0 : { *(.debug_loc) }
307 .debug_macinfo 0 : { *(.debug_macinfo) }
308 .debug_weaknames 0 : { *(.debug_weaknames) }
309 .debug_funcnames 0 : { *(.debug_funcnames) }
310 .debug_typenames 0 : { *(.debug_typenames) }
311 .debug_varnames 0 : { *(.debug_varnames) }
312
313 .xt.insn 0 :
314 {
315 *(.xt.insn)
316 *(.gnu.linkonce.x*)
317 }
318
319 .xt.lit 0 :
320 {
321 *(.xt.lit)
322 *(.gnu.linkonce.p*)
323 }
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324
325 /* Sections to be discarded */
326 DISCARDS
327 /DISCARD/ : { *(.exit.literal) }
5a0015d6 328}