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 <variant/core.h>
22 #include <platform/hardware.h>
27 jiffies = jiffies_64 + 4;
33 #define KERNELOFFSET 0xd0001000
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
44 /* Macro for a relocation entry */
46 #define RELOCATE_ENTRY(sym, section) \
47 LONG(sym ## _start); \
49 LONG(LOADADDR(section))
51 /* Macro to define a section for a vector.
53 * Use of the MIN function catches the types of errors illustrated in
54 * the following example:
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
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) \
70 sym ## _start = ABSOLUTE(.); \
72 sym ## _end = ABSOLUTE(.); \
76 * Mapping of input sections to output sections when linking.
89 /* The HEAD_TEXT section must be the first section! */
92 VMLINUX_SYMBOL(__sched_text_start) = .;
93 *(.sched.literal .sched.text)
94 VMLINUX_SYMBOL(__sched_text_end) = .;
95 VMLINUX_SYMBOL(__lock_text_start) = .;
96 *(.spinlock.literal .spinlock.text)
97 VMLINUX_SYMBOL(__lock_text_end) = .;
107 /* Relocation table */
109 .fixup : { *(.fixup) }
115 RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)
118 /* Initialization code and data: */
120 . = ALIGN(PAGE_SIZE);
122 INIT_TEXT_SECTION(PAGE_SIZE)
128 __tagtable_begin = .;
133 __boot_reloc_table_start = ABSOLUTE(.);
135 RELOCATE_ENTRY(_WindowVectors_text,
136 .WindowVectors.text);
137 #if XCHAL_EXCM_LEVEL >= 2
138 RELOCATE_ENTRY(_Level2InterruptVector_text,
139 .Level2InterruptVector.text);
141 #if XCHAL_EXCM_LEVEL >= 3
142 RELOCATE_ENTRY(_Level3InterruptVector_text,
143 .Level3InterruptVector.text);
145 #if XCHAL_EXCM_LEVEL >= 4
146 RELOCATE_ENTRY(_Level4InterruptVector_text,
147 .Level4InterruptVector.text);
149 #if XCHAL_EXCM_LEVEL >= 5
150 RELOCATE_ENTRY(_Level5InterruptVector_text,
151 .Level5InterruptVector.text);
153 #if XCHAL_EXCM_LEVEL >= 6
154 RELOCATE_ENTRY(_Level6InterruptVector_text,
155 .Level6InterruptVector.text);
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);
165 RELOCATE_ENTRY(_DebugInterruptVector_text,
166 .DebugInterruptVector.text);
168 __boot_reloc_table_end = ABSOLUTE(.) ;
170 INIT_SETUP(XCHAL_ICACHE_LINESIZE)
177 PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)
179 /* We need this dummy segment here */
184 /* The vectors are relocated to the real position at startup time */
186 SECTION_VECTOR (_WindowVectors_text,
188 XCHAL_WINDOW_VECTORS_VADDR, 4,
190 SECTION_VECTOR (_DebugInterruptVector_literal,
191 .DebugInterruptVector.literal,
192 XCHAL_DEBUG_VECTOR_VADDR - 4,
193 SIZEOF(.WindowVectors.text),
195 SECTION_VECTOR (_DebugInterruptVector_text,
196 .DebugInterruptVector.text,
197 XCHAL_DEBUG_VECTOR_VADDR,
199 .DebugInterruptVector.literal)
201 #define LAST .DebugInterruptVector.text
202 #if XCHAL_EXCM_LEVEL >= 2
203 SECTION_VECTOR (_Level2InterruptVector_text,
204 .Level2InterruptVector.text,
205 XCHAL_INTLEVEL2_VECTOR_VADDR,
208 # define LAST .Level2InterruptVector.text
210 #if XCHAL_EXCM_LEVEL >= 3
211 SECTION_VECTOR (_Level3InterruptVector_text,
212 .Level3InterruptVector.text,
213 XCHAL_INTLEVEL3_VECTOR_VADDR,
216 # define LAST .Level3InterruptVector.text
218 #if XCHAL_EXCM_LEVEL >= 4
219 SECTION_VECTOR (_Level4InterruptVector_text,
220 .Level4InterruptVector.text,
221 XCHAL_INTLEVEL4_VECTOR_VADDR,
224 # define LAST .Level4InterruptVector.text
226 #if XCHAL_EXCM_LEVEL >= 5
227 SECTION_VECTOR (_Level5InterruptVector_text,
228 .Level5InterruptVector.text,
229 XCHAL_INTLEVEL5_VECTOR_VADDR,
232 # define LAST .Level5InterruptVector.text
234 #if XCHAL_EXCM_LEVEL >= 6
235 SECTION_VECTOR (_Level6InterruptVector_text,
236 .Level6InterruptVector.text,
237 XCHAL_INTLEVEL6_VECTOR_VADDR,
240 # define LAST .Level6InterruptVector.text
242 SECTION_VECTOR (_KernelExceptionVector_literal,
243 .KernelExceptionVector.literal,
244 XCHAL_KERNEL_VECTOR_VADDR - 4,
247 SECTION_VECTOR (_KernelExceptionVector_text,
248 .KernelExceptionVector.text,
249 XCHAL_KERNEL_VECTOR_VADDR,
251 .KernelExceptionVector.literal)
252 SECTION_VECTOR (_UserExceptionVector_literal,
253 .UserExceptionVector.literal,
254 XCHAL_USER_VECTOR_VADDR - 4,
255 SIZEOF(.KernelExceptionVector.text),
256 .KernelExceptionVector.text)
257 SECTION_VECTOR (_UserExceptionVector_text,
258 .UserExceptionVector.text,
259 XCHAL_USER_VECTOR_VADDR,
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,
271 .DoubleExceptionVector.literal)
273 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
274 . = ALIGN(PAGE_SIZE);
278 BSS_SECTION(0, 8192, 0)
282 /* only used by the boot loader */
285 .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
287 .ResetVector.text XCHAL_RESET_VECTOR_VADDR :
292 .xt.lit : { *(.xt.lit) }
293 .xt.prop : { *(.xt.prop) }
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) }
325 /* Sections to be discarded */
327 /DISCARD/ : { *(.exit.literal) }