Commit | Line | Data |
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1da177e4 LT |
1 | /* ld script to make ARM Linux kernel |
2 | * taken from the i386 version by Russell King | |
3 | * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> | |
4 | */ | |
5 | ||
538bf469 CB |
6 | #ifdef CONFIG_XIP_KERNEL |
7 | #include "vmlinux-xip.lds.S" | |
8 | #else | |
9 | ||
1da177e4 | 10 | #include <asm-generic/vmlinux.lds.h> |
f0d5375e | 11 | #include <asm/cache.h> |
4f7a1812 | 12 | #include <asm/thread_info.h> |
37d07b72 | 13 | #include <asm/memory.h> |
f6430a93 | 14 | #include <asm/page.h> |
1e6b4811 | 15 | #include <asm/pgtable.h> |
e60a1fec | 16 | |
5085f3ff | 17 | #define PROC_INFO \ |
b8b9987f | 18 | . = ALIGN(4); \ |
5085f3ff RK |
19 | VMLINUX_SYMBOL(__proc_info_begin) = .; \ |
20 | *(.proc.info.init) \ | |
21 | VMLINUX_SYMBOL(__proc_info_end) = .; | |
22 | ||
8903826d WD |
23 | #define IDMAP_TEXT \ |
24 | ALIGN_FUNCTION(); \ | |
25 | VMLINUX_SYMBOL(__idmap_text_start) = .; \ | |
26 | *(.idmap.text) \ | |
9e9a367c | 27 | VMLINUX_SYMBOL(__idmap_text_end) = .; \ |
a9fea8b3 | 28 | . = ALIGN(PAGE_SIZE); \ |
9e9a367c CD |
29 | VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \ |
30 | *(.hyp.idmap.text) \ | |
31 | VMLINUX_SYMBOL(__hyp_idmap_text_end) = .; | |
8903826d | 32 | |
5085f3ff RK |
33 | #ifdef CONFIG_HOTPLUG_CPU |
34 | #define ARM_CPU_DISCARD(x) | |
35 | #define ARM_CPU_KEEP(x) x | |
36 | #else | |
37 | #define ARM_CPU_DISCARD(x) x | |
38 | #define ARM_CPU_KEEP(x) | |
39 | #endif | |
40 | ||
87e040b6 SG |
41 | #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \ |
42 | defined(CONFIG_GENERIC_BUG) | |
a9ad21fe | 43 | #define ARM_EXIT_KEEP(x) x |
6760b109 | 44 | #define ARM_EXIT_DISCARD(x) |
a9ad21fe RK |
45 | #else |
46 | #define ARM_EXIT_KEEP(x) | |
6760b109 | 47 | #define ARM_EXIT_DISCARD(x) x |
a9ad21fe RK |
48 | #endif |
49 | ||
1da177e4 LT |
50 | OUTPUT_ARCH(arm) |
51 | ENTRY(stext) | |
37d07b72 | 52 | |
1da177e4 LT |
53 | #ifndef __ARMEB__ |
54 | jiffies = jiffies_64; | |
55 | #else | |
56 | jiffies = jiffies_64 + 4; | |
57 | #endif | |
37d07b72 | 58 | |
9d4f13e5 RK |
59 | SECTIONS |
60 | { | |
39df8887 | 61 | /* |
6760b109 RK |
62 | * XXX: The linker does not define how output sections are |
63 | * assigned to input sections when there are multiple statements | |
64 | * matching the same input section name. There is no documented | |
65 | * order of matching. | |
66 | * | |
39df8887 RK |
67 | * unwind exit sections must be discarded before the rest of the |
68 | * unwind sections get included. | |
69 | */ | |
70 | /DISCARD/ : { | |
71 | *(.ARM.exidx.exit.text) | |
72 | *(.ARM.extab.exit.text) | |
73 | ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) | |
74 | ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) | |
6760b109 RK |
75 | ARM_EXIT_DISCARD(EXIT_TEXT) |
76 | ARM_EXIT_DISCARD(EXIT_DATA) | |
77 | EXIT_CALL | |
39df8887 | 78 | #ifndef CONFIG_MMU |
c4a84ae3 | 79 | *(.text.fixup) |
39df8887 RK |
80 | *(__ex_table) |
81 | #endif | |
82 | #ifndef CONFIG_SMP_ON_UP | |
83 | *(.alt.smp.init) | |
84 | #endif | |
6760b109 RK |
85 | *(.discard) |
86 | *(.discard.*) | |
39df8887 RK |
87 | } |
88 | ||
9d4f13e5 | 89 | . = PAGE_OFFSET + TEXT_OFFSET; |
1604d79d | 90 | .head.text : { |
e2f81844 | 91 | _text = .; |
1604d79d RK |
92 | HEAD_TEXT |
93 | } | |
1e6b4811 | 94 | |
25362dc4 | 95 | #ifdef CONFIG_DEBUG_RODATA |
1e6b4811 KC |
96 | . = ALIGN(1<<SECTION_SHIFT); |
97 | #endif | |
98 | ||
3835d69a | 99 | .text : { /* Real text segment */ |
e2f81844 | 100 | _stext = .; /* Text and read-only data */ |
eb765c1c | 101 | IDMAP_TEXT |
3835d69a RK |
102 | __exception_text_start = .; |
103 | *(.exception.text) | |
104 | __exception_text_end = .; | |
105 | IRQENTRY_TEXT | |
106 | TEXT_TEXT | |
107 | SCHED_TEXT | |
108 | LOCK_TEXT | |
109 | KPROBES_TEXT | |
3835d69a RK |
110 | *(.gnu.warning) |
111 | *(.glue_7) | |
112 | *(.glue_7t) | |
113 | . = ALIGN(4); | |
114 | *(.got) /* Global offset table */ | |
115 | ARM_CPU_KEEP(PROC_INFO) | |
116 | } | |
117 | ||
25362dc4 | 118 | #ifdef CONFIG_DEBUG_ALIGN_RODATA |
80d6b0c2 KC |
119 | . = ALIGN(1<<SECTION_SHIFT); |
120 | #endif | |
3835d69a RK |
121 | RO_DATA(PAGE_SIZE) |
122 | ||
ee951c63 SB |
123 | . = ALIGN(4); |
124 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { | |
125 | __start___ex_table = .; | |
126 | #ifdef CONFIG_MMU | |
127 | *(__ex_table) | |
128 | #endif | |
129 | __stop___ex_table = .; | |
130 | } | |
131 | ||
3835d69a RK |
132 | #ifdef CONFIG_ARM_UNWIND |
133 | /* | |
134 | * Stack unwinding tables | |
135 | */ | |
136 | . = ALIGN(8); | |
137 | .ARM.unwind_idx : { | |
138 | __start_unwind_idx = .; | |
139 | *(.ARM.exidx*) | |
140 | __stop_unwind_idx = .; | |
141 | } | |
142 | .ARM.unwind_tab : { | |
143 | __start_unwind_tab = .; | |
144 | *(.ARM.extab*) | |
145 | __stop_unwind_tab = .; | |
146 | } | |
147 | #endif | |
148 | ||
dad5451a PM |
149 | NOTES |
150 | ||
3835d69a RK |
151 | _etext = .; /* End of text and rodata section */ |
152 | ||
538bf469 | 153 | #ifdef CONFIG_DEBUG_RODATA |
1e6b4811 | 154 | . = ALIGN(1<<SECTION_SHIFT); |
538bf469 | 155 | #else |
3835d69a | 156 | . = ALIGN(PAGE_SIZE); |
3835d69a | 157 | #endif |
538bf469 CB |
158 | __init_begin = .; |
159 | ||
b9b32bf7 RK |
160 | /* |
161 | * The vectors and stubs are relocatable code, and the | |
162 | * only thing that matters is their relative offsets | |
163 | */ | |
164 | __vectors_start = .; | |
31b96cae | 165 | .vectors 0xffff0000 : AT(__vectors_start) { |
b9b32bf7 RK |
166 | *(.vectors) |
167 | } | |
168 | . = __vectors_start + SIZEOF(.vectors); | |
169 | __vectors_end = .; | |
170 | ||
171 | __stubs_start = .; | |
31b96cae | 172 | .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) { |
b9b32bf7 RK |
173 | *(.stubs) |
174 | } | |
175 | . = __stubs_start + SIZEOF(.stubs); | |
176 | __stubs_end = .; | |
3835d69a | 177 | |
31b96cae AB |
178 | PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors)); |
179 | ||
1604d79d RK |
180 | INIT_TEXT_SECTION(8) |
181 | .exit.text : { | |
182 | ARM_EXIT_KEEP(EXIT_TEXT) | |
183 | } | |
184 | .init.proc.info : { | |
5085f3ff | 185 | ARM_CPU_DISCARD(PROC_INFO) |
1604d79d RK |
186 | } |
187 | .init.arch.info : { | |
1da177e4 | 188 | __arch_info_begin = .; |
1604d79d | 189 | *(.arch.info.init) |
1da177e4 | 190 | __arch_info_end = .; |
1604d79d RK |
191 | } |
192 | .init.tagtable : { | |
1da177e4 | 193 | __tagtable_begin = .; |
1604d79d | 194 | *(.taglist.init) |
1da177e4 | 195 | __tagtable_end = .; |
1604d79d | 196 | } |
f00ec48f | 197 | #ifdef CONFIG_SMP_ON_UP |
1604d79d | 198 | .init.smpalt : { |
f00ec48f | 199 | __smpalt_begin = .; |
1604d79d | 200 | *(.alt.smp.init) |
f00ec48f | 201 | __smpalt_end = .; |
1604d79d | 202 | } |
f00ec48f | 203 | #endif |
1604d79d | 204 | .init.pv_table : { |
dc21af99 | 205 | __pv_table_begin = .; |
1604d79d | 206 | *(.pv_table) |
dc21af99 | 207 | __pv_table_end = .; |
1604d79d RK |
208 | } |
209 | .init.data : { | |
1604d79d | 210 | INIT_DATA |
78d7530a | 211 | INIT_SETUP(16) |
78d7530a NE |
212 | INIT_CALLS |
213 | CON_INITCALL | |
214 | SECURITY_INITCALL | |
215 | INIT_RAM_FS | |
1604d79d | 216 | } |
1604d79d | 217 | .exit.data : { |
a9ad21fe | 218 | ARM_EXIT_KEEP(EXIT_DATA) |
1da177e4 LT |
219 | } |
220 | ||
9973290c | 221 | #ifdef CONFIG_SMP |
f0d5375e | 222 | PERCPU_SECTION(L1_CACHE_BYTES) |
9973290c | 223 | #endif |
78d7530a | 224 | |
25362dc4 | 225 | #ifdef CONFIG_DEBUG_RODATA |
1e6b4811 | 226 | . = ALIGN(1<<SECTION_SHIFT); |
1da177e4 | 227 | #else |
4f7a1812 | 228 | . = ALIGN(THREAD_SIZE); |
1e6b4811 | 229 | #endif |
562c85ca | 230 | __init_end = .; |
1da177e4 | 231 | __data_loc = .; |
1da177e4 LT |
232 | |
233 | .data : AT(__data_loc) { | |
37efe642 | 234 | _data = .; /* address in memory */ |
8c7e6574 | 235 | _sdata = .; |
1da177e4 LT |
236 | |
237 | /* | |
238 | * first, the init task union, aligned | |
239 | * to an 8192 byte boundary. | |
240 | */ | |
78d7530a | 241 | INIT_TASK_DATA(THREAD_SIZE) |
1da177e4 | 242 | |
78d7530a | 243 | NOSAVE_DATA |
f0d5375e WD |
244 | CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) |
245 | READ_MOSTLY_DATA(L1_CACHE_BYTES) | |
1da177e4 LT |
246 | |
247 | /* | |
248 | * and the usual data section | |
249 | */ | |
ca967258 | 250 | DATA_DATA |
1da177e4 LT |
251 | CONSTRUCTORS |
252 | ||
253 | _edata = .; | |
254 | } | |
e98ff7f6 | 255 | _edata_loc = __data_loc + SIZEOF(.data); |
1da177e4 | 256 | |
bc581770 LW |
257 | #ifdef CONFIG_HAVE_TCM |
258 | /* | |
259 | * We align everything to a page boundary so we can | |
260 | * free it after init has commenced and TCM contents have | |
261 | * been copied to its destination. | |
262 | */ | |
263 | .tcm_start : { | |
264 | . = ALIGN(PAGE_SIZE); | |
265 | __tcm_start = .; | |
266 | __itcm_start = .; | |
267 | } | |
268 | ||
269 | /* | |
270 | * Link these to the ITCM RAM | |
271 | * Put VMA to the TCM address and LMA to the common RAM | |
272 | * and we'll upload the contents from RAM to TCM and free | |
273 | * the used RAM after that. | |
274 | */ | |
275 | .text_itcm ITCM_OFFSET : AT(__itcm_start) | |
276 | { | |
277 | __sitcm_text = .; | |
278 | *(.tcm.text) | |
279 | *(.tcm.rodata) | |
280 | . = ALIGN(4); | |
281 | __eitcm_text = .; | |
282 | } | |
283 | ||
284 | /* | |
285 | * Reset the dot pointer, this is needed to create the | |
286 | * relative __dtcm_start below (to be used as extern in code). | |
287 | */ | |
288 | . = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm); | |
289 | ||
290 | .dtcm_start : { | |
291 | __dtcm_start = .; | |
292 | } | |
293 | ||
294 | /* TODO: add remainder of ITCM as well, that can be used for data! */ | |
295 | .data_dtcm DTCM_OFFSET : AT(__dtcm_start) | |
296 | { | |
297 | . = ALIGN(4); | |
298 | __sdtcm_data = .; | |
299 | *(.tcm.data) | |
300 | . = ALIGN(4); | |
301 | __edtcm_data = .; | |
302 | } | |
303 | ||
304 | /* Reset the dot pointer or the linker gets confused */ | |
305 | . = ADDR(.dtcm_start) + SIZEOF(.data_dtcm); | |
306 | ||
307 | /* End marker for freeing TCM copy in linked object */ | |
308 | .tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){ | |
309 | . = ALIGN(PAGE_SIZE); | |
310 | __tcm_end = .; | |
311 | } | |
312 | #endif | |
313 | ||
78d7530a NE |
314 | BSS_SECTION(0, 0, 0) |
315 | _end = .; | |
316 | ||
317 | STABS_DEBUG | |
1da177e4 LT |
318 | } |
319 | ||
64ac2e74 KC |
320 | /* |
321 | * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will | |
322 | * be the first section-aligned location after __start_rodata. Otherwise, | |
323 | * it will be equal to __start_rodata. | |
324 | */ | |
325 | __start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT); | |
326 | ||
728f5c07 RK |
327 | /* |
328 | * These must never be empty | |
329 | * If you have to comment these two assert statements out, your | |
330 | * binutils is too old (for other reasons as well) | |
331 | */ | |
1da177e4 LT |
332 | ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support") |
333 | ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined") | |
06f75a1f | 334 | |
0394e1f6 | 335 | /* |
06f75a1f AB |
336 | * The HYP init code can't be more than a page long, |
337 | * and should not cross a page boundary. | |
0394e1f6 MZ |
338 | * The above comment applies as well. |
339 | */ | |
12eb3e83 | 340 | ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & PAGE_MASK) <= PAGE_SIZE, |
06f75a1f | 341 | "HYP init code too big or misaligned") |
538bf469 CB |
342 | |
343 | #endif /* CONFIG_XIP_KERNEL */ |