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 - 2005 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 RELOCATE_ENTRY(_KernelExceptionVector_text,
138 .KernelExceptionVector.text);
139 RELOCATE_ENTRY(_UserExceptionVector_text,
140 .UserExceptionVector.text);
141 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
142 .DoubleExceptionVector.literal);
143 RELOCATE_ENTRY(_DoubleExceptionVector_text,
144 .DoubleExceptionVector.text);
145 RELOCATE_ENTRY(_DebugInterruptVector_text,
146 .DebugInterruptVector.text);
148 __boot_reloc_table_end = ABSOLUTE(.) ;
150 INIT_SETUP(XCHAL_ICACHE_LINESIZE)
157 PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)
159 /* We need this dummy segment here */
164 /* The vectors are relocated to the real position at startup time */
166 SECTION_VECTOR (_WindowVectors_text,
168 XCHAL_WINDOW_VECTORS_VADDR, 4,
170 SECTION_VECTOR (_DebugInterruptVector_literal,
171 .DebugInterruptVector.literal,
172 XCHAL_DEBUG_VECTOR_VADDR - 4,
173 SIZEOF(.WindowVectors.text),
175 SECTION_VECTOR (_DebugInterruptVector_text,
176 .DebugInterruptVector.text,
177 XCHAL_DEBUG_VECTOR_VADDR,
179 .DebugInterruptVector.literal)
180 SECTION_VECTOR (_KernelExceptionVector_literal,
181 .KernelExceptionVector.literal,
182 XCHAL_KERNEL_VECTOR_VADDR - 4,
183 SIZEOF(.DebugInterruptVector.text),
184 .DebugInterruptVector.text)
185 SECTION_VECTOR (_KernelExceptionVector_text,
186 .KernelExceptionVector.text,
187 XCHAL_KERNEL_VECTOR_VADDR,
189 .KernelExceptionVector.literal)
190 SECTION_VECTOR (_UserExceptionVector_literal,
191 .UserExceptionVector.literal,
192 XCHAL_USER_VECTOR_VADDR - 4,
193 SIZEOF(.KernelExceptionVector.text),
194 .KernelExceptionVector.text)
195 SECTION_VECTOR (_UserExceptionVector_text,
196 .UserExceptionVector.text,
197 XCHAL_USER_VECTOR_VADDR,
199 .UserExceptionVector.literal)
200 SECTION_VECTOR (_DoubleExceptionVector_literal,
201 .DoubleExceptionVector.literal,
202 XCHAL_DOUBLEEXC_VECTOR_VADDR - 16,
203 SIZEOF(.UserExceptionVector.text),
204 .UserExceptionVector.text)
205 SECTION_VECTOR (_DoubleExceptionVector_text,
206 .DoubleExceptionVector.text,
207 XCHAL_DOUBLEEXC_VECTOR_VADDR,
209 .DoubleExceptionVector.literal)
211 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
212 . = ALIGN(PAGE_SIZE);
216 BSS_SECTION(0, 8192, 0)
220 /* only used by the boot loader */
223 .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
227 .initrd : { *(.initrd) }
230 .ResetVector.text XCHAL_RESET_VECTOR_VADDR :
235 .xt.lit : { *(.xt.lit) }
236 .xt.prop : { *(.xt.prop) }
238 .debug 0 : { *(.debug) }
239 .line 0 : { *(.line) }
240 .debug_srcinfo 0 : { *(.debug_srcinfo) }
241 .debug_sfnames 0 : { *(.debug_sfnames) }
242 .debug_aranges 0 : { *(.debug_aranges) }
243 .debug_pubnames 0 : { *(.debug_pubnames) }
244 .debug_info 0 : { *(.debug_info) }
245 .debug_abbrev 0 : { *(.debug_abbrev) }
246 .debug_line 0 : { *(.debug_line) }
247 .debug_frame 0 : { *(.debug_frame) }
248 .debug_str 0 : { *(.debug_str) }
249 .debug_loc 0 : { *(.debug_loc) }
250 .debug_macinfo 0 : { *(.debug_macinfo) }
251 .debug_weaknames 0 : { *(.debug_weaknames) }
252 .debug_funcnames 0 : { *(.debug_funcnames) }
253 .debug_typenames 0 : { *(.debug_typenames) }
254 .debug_varnames 0 : { *(.debug_varnames) }
268 /* Sections to be discarded */
270 /DISCARD/ : { *(.exit.literal) }