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.
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 RELOCATE_ENTRY(_KernelExceptionVector_text,
139 .KernelExceptionVector.text);
140 RELOCATE_ENTRY(_UserExceptionVector_text,
141 .UserExceptionVector.text);
142 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
143 .DoubleExceptionVector.literal);
144 RELOCATE_ENTRY(_DoubleExceptionVector_text,
145 .DoubleExceptionVector.text);
146 RELOCATE_ENTRY(_DebugInterruptVector_text,
147 .DebugInterruptVector.text);
149 __boot_reloc_table_end = ABSOLUTE(.) ;
151 INIT_SETUP(XCHAL_ICACHE_LINESIZE)
160 /* We need this dummy segment here */
165 /* The vectors are relocated to the real position at startup time */
167 SECTION_VECTOR (_WindowVectors_text,
169 XCHAL_WINDOW_VECTORS_VADDR, 4,
171 SECTION_VECTOR (_DebugInterruptVector_literal,
172 .DebugInterruptVector.literal,
173 XCHAL_DEBUG_VECTOR_VADDR - 4,
174 SIZEOF(.WindowVectors.text),
176 SECTION_VECTOR (_DebugInterruptVector_text,
177 .DebugInterruptVector.text,
178 XCHAL_DEBUG_VECTOR_VADDR,
180 .DebugInterruptVector.literal)
181 SECTION_VECTOR (_KernelExceptionVector_literal,
182 .KernelExceptionVector.literal,
183 XCHAL_KERNEL_VECTOR_VADDR - 4,
184 SIZEOF(.DebugInterruptVector.text),
185 .DebugInterruptVector.text)
186 SECTION_VECTOR (_KernelExceptionVector_text,
187 .KernelExceptionVector.text,
188 XCHAL_KERNEL_VECTOR_VADDR,
190 .KernelExceptionVector.literal)
191 SECTION_VECTOR (_UserExceptionVector_literal,
192 .UserExceptionVector.literal,
193 XCHAL_USER_VECTOR_VADDR - 4,
194 SIZEOF(.KernelExceptionVector.text),
195 .KernelExceptionVector.text)
196 SECTION_VECTOR (_UserExceptionVector_text,
197 .UserExceptionVector.text,
198 XCHAL_USER_VECTOR_VADDR,
200 .UserExceptionVector.literal)
201 SECTION_VECTOR (_DoubleExceptionVector_literal,
202 .DoubleExceptionVector.literal,
203 XCHAL_DOUBLEEXC_VECTOR_VADDR - 16,
204 SIZEOF(.UserExceptionVector.text),
205 .UserExceptionVector.text)
206 SECTION_VECTOR (_DoubleExceptionVector_text,
207 .DoubleExceptionVector.text,
208 XCHAL_DOUBLEEXC_VECTOR_VADDR,
210 .DoubleExceptionVector.literal)
212 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
213 . = ALIGN(PAGE_SIZE);
217 BSS_SECTION(0, 8192, 0)
221 /* only used by the boot loader */
224 .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
228 .initrd : { *(.initrd) }
231 .ResetVector.text XCHAL_RESET_VECTOR_VADDR :
236 .xt.lit : { *(.xt.lit) }
237 .xt.prop : { *(.xt.prop) }
239 .debug 0 : { *(.debug) }
240 .line 0 : { *(.line) }
241 .debug_srcinfo 0 : { *(.debug_srcinfo) }
242 .debug_sfnames 0 : { *(.debug_sfnames) }
243 .debug_aranges 0 : { *(.debug_aranges) }
244 .debug_pubnames 0 : { *(.debug_pubnames) }
245 .debug_info 0 : { *(.debug_info) }
246 .debug_abbrev 0 : { *(.debug_abbrev) }
247 .debug_line 0 : { *(.debug_line) }
248 .debug_frame 0 : { *(.debug_frame) }
249 .debug_str 0 : { *(.debug_str) }
250 .debug_loc 0 : { *(.debug_loc) }
251 .debug_macinfo 0 : { *(.debug_macinfo) }
252 .debug_weaknames 0 : { *(.debug_weaknames) }
253 .debug_funcnames 0 : { *(.debug_funcnames) }
254 .debug_typenames 0 : { *(.debug_typenames) }
255 .debug_varnames 0 : { *(.debug_varnames) }
269 /* Sections to be discarded */
271 /DISCARD/ : { *(.exit.literal) }