2 * arch/xtensa/kernel/vmlinux.lds.S
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
10 * Copyright (C) 2001 - 2008 Tensilica Inc.
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>
17 #include <asm-generic/vmlinux.lds.h>
19 #include <asm/thread_info.h>
21 #include <asm/vectors.h>
22 #include <variant/core.h>
23 #include <platform/hardware.h>
28 jiffies = jiffies_64 + 4;
34 #define KERNELOFFSET 0xd0003000
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
45 /* Macro for a relocation entry */
47 #define RELOCATE_ENTRY(sym, section) \
48 LONG(sym ## _start); \
50 LONG(LOADADDR(section))
52 /* Macro to define a section for a vector.
54 * Use of the MIN function catches the types of errors illustrated in
55 * the following example:
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
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) \
71 sym ## _start = ABSOLUTE(.); \
73 sym ## _end = ABSOLUTE(.); \
77 * Mapping of input sections to output sections when linking.
90 /* The HEAD_TEXT section must be the first section! */
93 VMLINUX_SYMBOL(__sched_text_start) = .;
94 *(.sched.literal .sched.text)
95 VMLINUX_SYMBOL(__sched_text_end) = .;
96 VMLINUX_SYMBOL(__lock_text_start) = .;
97 *(.spinlock.literal .spinlock.text)
98 VMLINUX_SYMBOL(__lock_text_end) = .;
108 /* Relocation table */
110 .fixup : { *(.fixup) }
116 RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)
119 /* Initialization code and data: */
121 . = ALIGN(PAGE_SIZE);
123 INIT_TEXT_SECTION(PAGE_SIZE)
129 __tagtable_begin = .;
134 __boot_reloc_table_start = ABSOLUTE(.);
136 RELOCATE_ENTRY(_WindowVectors_text,
137 .WindowVectors.text);
138 #if XCHAL_EXCM_LEVEL >= 2
139 RELOCATE_ENTRY(_Level2InterruptVector_text,
140 .Level2InterruptVector.text);
142 #if XCHAL_EXCM_LEVEL >= 3
143 RELOCATE_ENTRY(_Level3InterruptVector_text,
144 .Level3InterruptVector.text);
146 #if XCHAL_EXCM_LEVEL >= 4
147 RELOCATE_ENTRY(_Level4InterruptVector_text,
148 .Level4InterruptVector.text);
150 #if XCHAL_EXCM_LEVEL >= 5
151 RELOCATE_ENTRY(_Level5InterruptVector_text,
152 .Level5InterruptVector.text);
154 #if XCHAL_EXCM_LEVEL >= 6
155 RELOCATE_ENTRY(_Level6InterruptVector_text,
156 .Level6InterruptVector.text);
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);
166 RELOCATE_ENTRY(_DebugInterruptVector_text,
167 .DebugInterruptVector.text);
168 #if defined(CONFIG_SMP)
169 RELOCATE_ENTRY(_SecondaryResetVector_text,
170 .SecondaryResetVector.text);
174 __boot_reloc_table_end = ABSOLUTE(.) ;
176 INIT_SETUP(XCHAL_ICACHE_LINESIZE)
183 PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)
185 /* We need this dummy segment here */
190 /* The vectors are relocated to the real position at startup time */
192 SECTION_VECTOR (_WindowVectors_text,
194 WINDOW_VECTORS_VADDR, 4,
196 SECTION_VECTOR (_DebugInterruptVector_literal,
197 .DebugInterruptVector.literal,
198 DEBUG_VECTOR_VADDR - 4,
199 SIZEOF(.WindowVectors.text),
201 SECTION_VECTOR (_DebugInterruptVector_text,
202 .DebugInterruptVector.text,
205 .DebugInterruptVector.literal)
207 #define LAST .DebugInterruptVector.text
208 #if XCHAL_EXCM_LEVEL >= 2
209 SECTION_VECTOR (_Level2InterruptVector_text,
210 .Level2InterruptVector.text,
211 INTLEVEL2_VECTOR_VADDR,
214 # define LAST .Level2InterruptVector.text
216 #if XCHAL_EXCM_LEVEL >= 3
217 SECTION_VECTOR (_Level3InterruptVector_text,
218 .Level3InterruptVector.text,
219 INTLEVEL3_VECTOR_VADDR,
222 # define LAST .Level3InterruptVector.text
224 #if XCHAL_EXCM_LEVEL >= 4
225 SECTION_VECTOR (_Level4InterruptVector_text,
226 .Level4InterruptVector.text,
227 INTLEVEL4_VECTOR_VADDR,
230 # define LAST .Level4InterruptVector.text
232 #if XCHAL_EXCM_LEVEL >= 5
233 SECTION_VECTOR (_Level5InterruptVector_text,
234 .Level5InterruptVector.text,
235 INTLEVEL5_VECTOR_VADDR,
238 # define LAST .Level5InterruptVector.text
240 #if XCHAL_EXCM_LEVEL >= 6
241 SECTION_VECTOR (_Level6InterruptVector_text,
242 .Level6InterruptVector.text,
243 INTLEVEL6_VECTOR_VADDR,
246 # define LAST .Level6InterruptVector.text
248 SECTION_VECTOR (_KernelExceptionVector_literal,
249 .KernelExceptionVector.literal,
250 KERNEL_VECTOR_VADDR - 4,
253 SECTION_VECTOR (_KernelExceptionVector_text,
254 .KernelExceptionVector.text,
257 .KernelExceptionVector.literal)
258 SECTION_VECTOR (_UserExceptionVector_literal,
259 .UserExceptionVector.literal,
260 USER_VECTOR_VADDR - 4,
261 SIZEOF(.KernelExceptionVector.text),
262 .KernelExceptionVector.text)
263 SECTION_VECTOR (_UserExceptionVector_text,
264 .UserExceptionVector.text,
267 .UserExceptionVector.literal)
268 SECTION_VECTOR (_DoubleExceptionVector_literal,
269 .DoubleExceptionVector.literal,
270 DOUBLEEXC_VECTOR_VADDR - 48,
271 SIZEOF(.UserExceptionVector.text),
272 .UserExceptionVector.text)
273 SECTION_VECTOR (_DoubleExceptionVector_text,
274 .DoubleExceptionVector.text,
275 DOUBLEEXC_VECTOR_VADDR,
277 .DoubleExceptionVector.literal)
279 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
281 #if defined(CONFIG_SMP)
283 SECTION_VECTOR (_SecondaryResetVector_text,
284 .SecondaryResetVector.text,
286 SIZEOF(.DoubleExceptionVector.text),
287 .DoubleExceptionVector.text)
289 . = LOADADDR(.SecondaryResetVector.text)+SIZEOF(.SecondaryResetVector.text);
293 . = ALIGN(PAGE_SIZE);
297 BSS_SECTION(0, 8192, 0)
301 .xt.lit : { *(.xt.lit) }
302 .xt.prop : { *(.xt.prop) }
304 .debug 0 : { *(.debug) }
305 .line 0 : { *(.line) }
306 .debug_srcinfo 0 : { *(.debug_srcinfo) }
307 .debug_sfnames 0 : { *(.debug_sfnames) }
308 .debug_aranges 0 : { *(.debug_aranges) }
309 .debug_pubnames 0 : { *(.debug_pubnames) }
310 .debug_info 0 : { *(.debug_info) }
311 .debug_abbrev 0 : { *(.debug_abbrev) }
312 .debug_line 0 : { *(.debug_line) }
313 .debug_frame 0 : { *(.debug_frame) }
314 .debug_str 0 : { *(.debug_str) }
315 .debug_loc 0 : { *(.debug_loc) }
316 .debug_macinfo 0 : { *(.debug_macinfo) }
317 .debug_weaknames 0 : { *(.debug_weaknames) }
318 .debug_funcnames 0 : { *(.debug_funcnames) }
319 .debug_typenames 0 : { *(.debug_typenames) }
320 .debug_varnames 0 : { *(.debug_varnames) }
334 /* Sections to be discarded */
336 /DISCARD/ : { *(.exit.literal) }