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>
28 jiffies = jiffies_64 + 4;
33 /* Note: In the following macros, it would be nice to specify only the
34 vector name and section kind and construct "sym" and "section" using
35 CPP concatenation, but that does not work reliably. Concatenating a
36 string with "." produces an invalid token. CPP will not print a
37 warning because it thinks this is an assembly file, but it leaves
38 them as multiple tokens and there may or may not be whitespace
41 /* Macro for a relocation entry */
43 #define RELOCATE_ENTRY(sym, section) \
44 LONG(sym ## _start); \
46 LONG(LOADADDR(section))
49 * Macro to define a section for a vector. When CONFIG_VECTORS_OFFSET is
50 * defined code for every vector is located with other init data. At startup
51 * time head.S copies code for every vector to its final position according
52 * to description recorded in the corresponding RELOCATE_ENTRY.
55 #ifdef CONFIG_VECTORS_OFFSET
56 #define SECTION_VECTOR(sym, section, addr, prevsec) \
57 section addr : AT(((LOADADDR(prevsec) + SIZEOF(prevsec)) + 3) & ~ 3) \
60 sym ## _start = ABSOLUTE(.); \
62 sym ## _end = ABSOLUTE(.); \
65 #define SECTION_VECTOR(section, addr) \
71 * Mapping of input sections to output sections when linking.
84 /* The HEAD_TEXT section must be the first section! */
87 #ifndef CONFIG_VECTORS_OFFSET
91 SECTION_VECTOR (.WindowVectors.text, WINDOW_VECTORS_VADDR)
92 #if XCHAL_EXCM_LEVEL >= 2
93 SECTION_VECTOR (.Level2InterruptVector.text, INTLEVEL2_VECTOR_VADDR)
95 #if XCHAL_EXCM_LEVEL >= 3
96 SECTION_VECTOR (.Level3InterruptVector.text, INTLEVEL3_VECTOR_VADDR)
98 #if XCHAL_EXCM_LEVEL >= 4
99 SECTION_VECTOR (.Level4InterruptVector.text, INTLEVEL4_VECTOR_VADDR)
101 #if XCHAL_EXCM_LEVEL >= 5
102 SECTION_VECTOR (.Level5InterruptVector.text, INTLEVEL5_VECTOR_VADDR)
104 #if XCHAL_EXCM_LEVEL >= 6
105 SECTION_VECTOR (.Level6InterruptVector.text, INTLEVEL6_VECTOR_VADDR)
107 SECTION_VECTOR (.DebugInterruptVector.text, DEBUG_VECTOR_VADDR)
108 SECTION_VECTOR (.KernelExceptionVector.text, KERNEL_VECTOR_VADDR)
109 SECTION_VECTOR (.UserExceptionVector.text, USER_VECTOR_VADDR)
110 SECTION_VECTOR (.DoubleExceptionVector.text, DOUBLEEXC_VECTOR_VADDR)
129 /* Relocation table */
131 .fixup : { *(.fixup) }
138 RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)
141 /* Initialization code and data: */
143 . = ALIGN(PAGE_SIZE);
145 INIT_TEXT_SECTION(PAGE_SIZE)
151 __tagtable_begin = .;
156 __boot_reloc_table_start = ABSOLUTE(.);
158 #ifdef CONFIG_VECTORS_OFFSET
159 RELOCATE_ENTRY(_WindowVectors_text,
160 .WindowVectors.text);
161 #if XCHAL_EXCM_LEVEL >= 2
162 RELOCATE_ENTRY(_Level2InterruptVector_text,
163 .Level2InterruptVector.text);
165 #if XCHAL_EXCM_LEVEL >= 3
166 RELOCATE_ENTRY(_Level3InterruptVector_text,
167 .Level3InterruptVector.text);
169 #if XCHAL_EXCM_LEVEL >= 4
170 RELOCATE_ENTRY(_Level4InterruptVector_text,
171 .Level4InterruptVector.text);
173 #if XCHAL_EXCM_LEVEL >= 5
174 RELOCATE_ENTRY(_Level5InterruptVector_text,
175 .Level5InterruptVector.text);
177 #if XCHAL_EXCM_LEVEL >= 6
178 RELOCATE_ENTRY(_Level6InterruptVector_text,
179 .Level6InterruptVector.text);
181 RELOCATE_ENTRY(_KernelExceptionVector_text,
182 .KernelExceptionVector.text);
183 RELOCATE_ENTRY(_UserExceptionVector_text,
184 .UserExceptionVector.text);
185 RELOCATE_ENTRY(_DoubleExceptionVector_text,
186 .DoubleExceptionVector.text);
187 RELOCATE_ENTRY(_DebugInterruptVector_text,
188 .DebugInterruptVector.text);
190 #if defined(CONFIG_SMP)
191 RELOCATE_ENTRY(_SecondaryResetVector_text,
192 .SecondaryResetVector.text);
196 __boot_reloc_table_end = ABSOLUTE(.) ;
198 INIT_SETUP(XCHAL_ICACHE_LINESIZE)
205 PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)
207 /* We need this dummy segment here */
212 #ifdef CONFIG_VECTORS_OFFSET
213 /* The vectors are relocated to the real position at startup time */
215 SECTION_VECTOR (_WindowVectors_text,
217 WINDOW_VECTORS_VADDR,
219 SECTION_VECTOR (_DebugInterruptVector_text,
220 .DebugInterruptVector.text,
224 #define LAST .DebugInterruptVector.text
225 #if XCHAL_EXCM_LEVEL >= 2
226 SECTION_VECTOR (_Level2InterruptVector_text,
227 .Level2InterruptVector.text,
228 INTLEVEL2_VECTOR_VADDR,
231 # define LAST .Level2InterruptVector.text
233 #if XCHAL_EXCM_LEVEL >= 3
234 SECTION_VECTOR (_Level3InterruptVector_text,
235 .Level3InterruptVector.text,
236 INTLEVEL3_VECTOR_VADDR,
239 # define LAST .Level3InterruptVector.text
241 #if XCHAL_EXCM_LEVEL >= 4
242 SECTION_VECTOR (_Level4InterruptVector_text,
243 .Level4InterruptVector.text,
244 INTLEVEL4_VECTOR_VADDR,
247 # define LAST .Level4InterruptVector.text
249 #if XCHAL_EXCM_LEVEL >= 5
250 SECTION_VECTOR (_Level5InterruptVector_text,
251 .Level5InterruptVector.text,
252 INTLEVEL5_VECTOR_VADDR,
255 # define LAST .Level5InterruptVector.text
257 #if XCHAL_EXCM_LEVEL >= 6
258 SECTION_VECTOR (_Level6InterruptVector_text,
259 .Level6InterruptVector.text,
260 INTLEVEL6_VECTOR_VADDR,
263 # define LAST .Level6InterruptVector.text
265 SECTION_VECTOR (_KernelExceptionVector_text,
266 .KernelExceptionVector.text,
270 SECTION_VECTOR (_UserExceptionVector_text,
271 .UserExceptionVector.text,
273 .KernelExceptionVector.text)
274 SECTION_VECTOR (_DoubleExceptionVector_text,
275 .DoubleExceptionVector.text,
276 DOUBLEEXC_VECTOR_VADDR,
277 .UserExceptionVector.text)
279 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
282 #if defined(CONFIG_SMP)
284 SECTION_VECTOR (_SecondaryResetVector_text,
285 .SecondaryResetVector.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) }
318 /* Sections to be discarded */