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 | ||
6 | #include <asm-generic/vmlinux.lds.h> | |
f0d5375e | 7 | #include <asm/cache.h> |
4f7a1812 | 8 | #include <asm/thread_info.h> |
37d07b72 | 9 | #include <asm/memory.h> |
f6430a93 | 10 | #include <asm/page.h> |
1da177e4 | 11 | |
5085f3ff | 12 | #define PROC_INFO \ |
b8b9987f | 13 | . = ALIGN(4); \ |
5085f3ff RK |
14 | VMLINUX_SYMBOL(__proc_info_begin) = .; \ |
15 | *(.proc.info.init) \ | |
16 | VMLINUX_SYMBOL(__proc_info_end) = .; | |
17 | ||
8903826d WD |
18 | #define IDMAP_TEXT \ |
19 | ALIGN_FUNCTION(); \ | |
20 | VMLINUX_SYMBOL(__idmap_text_start) = .; \ | |
21 | *(.idmap.text) \ | |
9e9a367c | 22 | VMLINUX_SYMBOL(__idmap_text_end) = .; \ |
0394e1f6 | 23 | . = ALIGN(32); \ |
9e9a367c CD |
24 | VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \ |
25 | *(.hyp.idmap.text) \ | |
26 | VMLINUX_SYMBOL(__hyp_idmap_text_end) = .; | |
8903826d | 27 | |
5085f3ff RK |
28 | #ifdef CONFIG_HOTPLUG_CPU |
29 | #define ARM_CPU_DISCARD(x) | |
30 | #define ARM_CPU_KEEP(x) x | |
31 | #else | |
32 | #define ARM_CPU_DISCARD(x) x | |
33 | #define ARM_CPU_KEEP(x) | |
34 | #endif | |
35 | ||
87e040b6 SG |
36 | #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \ |
37 | defined(CONFIG_GENERIC_BUG) | |
a9ad21fe | 38 | #define ARM_EXIT_KEEP(x) x |
6760b109 | 39 | #define ARM_EXIT_DISCARD(x) |
a9ad21fe RK |
40 | #else |
41 | #define ARM_EXIT_KEEP(x) | |
6760b109 | 42 | #define ARM_EXIT_DISCARD(x) x |
a9ad21fe RK |
43 | #endif |
44 | ||
1da177e4 LT |
45 | OUTPUT_ARCH(arm) |
46 | ENTRY(stext) | |
37d07b72 | 47 | |
1da177e4 LT |
48 | #ifndef __ARMEB__ |
49 | jiffies = jiffies_64; | |
50 | #else | |
51 | jiffies = jiffies_64 + 4; | |
52 | #endif | |
37d07b72 | 53 | |
9d4f13e5 RK |
54 | SECTIONS |
55 | { | |
39df8887 | 56 | /* |
6760b109 RK |
57 | * XXX: The linker does not define how output sections are |
58 | * assigned to input sections when there are multiple statements | |
59 | * matching the same input section name. There is no documented | |
60 | * order of matching. | |
61 | * | |
39df8887 RK |
62 | * unwind exit sections must be discarded before the rest of the |
63 | * unwind sections get included. | |
64 | */ | |
65 | /DISCARD/ : { | |
66 | *(.ARM.exidx.exit.text) | |
67 | *(.ARM.extab.exit.text) | |
68 | ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) | |
69 | ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) | |
6760b109 RK |
70 | ARM_EXIT_DISCARD(EXIT_TEXT) |
71 | ARM_EXIT_DISCARD(EXIT_DATA) | |
72 | EXIT_CALL | |
39df8887 RK |
73 | #ifndef CONFIG_HOTPLUG |
74 | *(.ARM.exidx.devexit.text) | |
75 | *(.ARM.extab.devexit.text) | |
76 | #endif | |
77 | #ifndef CONFIG_MMU | |
78 | *(.fixup) | |
79 | *(__ex_table) | |
80 | #endif | |
81 | #ifndef CONFIG_SMP_ON_UP | |
82 | *(.alt.smp.init) | |
83 | #endif | |
6760b109 RK |
84 | *(.discard) |
85 | *(.discard.*) | |
39df8887 RK |
86 | } |
87 | ||
37d07b72 | 88 | #ifdef CONFIG_XIP_KERNEL |
9d4f13e5 | 89 | . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR); |
37d07b72 | 90 | #else |
9d4f13e5 | 91 | . = PAGE_OFFSET + TEXT_OFFSET; |
37d07b72 | 92 | #endif |
1604d79d | 93 | .head.text : { |
e2f81844 | 94 | _text = .; |
1604d79d RK |
95 | HEAD_TEXT |
96 | } | |
3835d69a | 97 | .text : { /* Real text segment */ |
e2f81844 | 98 | _stext = .; /* Text and read-only data */ |
3835d69a RK |
99 | __exception_text_start = .; |
100 | *(.exception.text) | |
101 | __exception_text_end = .; | |
102 | IRQENTRY_TEXT | |
103 | TEXT_TEXT | |
104 | SCHED_TEXT | |
105 | LOCK_TEXT | |
106 | KPROBES_TEXT | |
8903826d | 107 | IDMAP_TEXT |
3835d69a RK |
108 | #ifdef CONFIG_MMU |
109 | *(.fixup) | |
110 | #endif | |
111 | *(.gnu.warning) | |
112 | *(.glue_7) | |
113 | *(.glue_7t) | |
114 | . = ALIGN(4); | |
115 | *(.got) /* Global offset table */ | |
116 | ARM_CPU_KEEP(PROC_INFO) | |
117 | } | |
118 | ||
119 | RO_DATA(PAGE_SIZE) | |
120 | ||
ee951c63 SB |
121 | . = ALIGN(4); |
122 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { | |
123 | __start___ex_table = .; | |
124 | #ifdef CONFIG_MMU | |
125 | *(__ex_table) | |
126 | #endif | |
127 | __stop___ex_table = .; | |
128 | } | |
129 | ||
3835d69a RK |
130 | #ifdef CONFIG_ARM_UNWIND |
131 | /* | |
132 | * Stack unwinding tables | |
133 | */ | |
134 | . = ALIGN(8); | |
135 | .ARM.unwind_idx : { | |
136 | __start_unwind_idx = .; | |
137 | *(.ARM.exidx*) | |
138 | __stop_unwind_idx = .; | |
139 | } | |
140 | .ARM.unwind_tab : { | |
141 | __start_unwind_tab = .; | |
142 | *(.ARM.extab*) | |
143 | __stop_unwind_tab = .; | |
144 | } | |
145 | #endif | |
146 | ||
dad5451a PM |
147 | NOTES |
148 | ||
3835d69a RK |
149 | _etext = .; /* End of text and rodata section */ |
150 | ||
151 | #ifndef CONFIG_XIP_KERNEL | |
152 | . = ALIGN(PAGE_SIZE); | |
153 | __init_begin = .; | |
154 | #endif | |
0477cd42 RK |
155 | /* |
156 | * The vectors and stubs are relocatable code, and the | |
157 | * only thing that matters is their relative offsets | |
158 | */ | |
159 | __vectors_start = .; | |
160 | .vectors 0 : AT(__vectors_start) { | |
161 | *(.vectors) | |
162 | } | |
163 | . = __vectors_start + SIZEOF(.vectors); | |
164 | __vectors_end = .; | |
165 | ||
166 | __stubs_start = .; | |
167 | .stubs 0x1000 : AT(__stubs_start) { | |
168 | *(.stubs) | |
169 | } | |
170 | . = __stubs_start + SIZEOF(.stubs); | |
171 | __stubs_end = .; | |
3835d69a | 172 | |
1604d79d RK |
173 | INIT_TEXT_SECTION(8) |
174 | .exit.text : { | |
175 | ARM_EXIT_KEEP(EXIT_TEXT) | |
176 | } | |
177 | .init.proc.info : { | |
5085f3ff | 178 | ARM_CPU_DISCARD(PROC_INFO) |
1604d79d RK |
179 | } |
180 | .init.arch.info : { | |
1da177e4 | 181 | __arch_info_begin = .; |
1604d79d | 182 | *(.arch.info.init) |
1da177e4 | 183 | __arch_info_end = .; |
1604d79d RK |
184 | } |
185 | .init.tagtable : { | |
1da177e4 | 186 | __tagtable_begin = .; |
1604d79d | 187 | *(.taglist.init) |
1da177e4 | 188 | __tagtable_end = .; |
1604d79d | 189 | } |
f00ec48f | 190 | #ifdef CONFIG_SMP_ON_UP |
1604d79d | 191 | .init.smpalt : { |
f00ec48f | 192 | __smpalt_begin = .; |
1604d79d | 193 | *(.alt.smp.init) |
f00ec48f | 194 | __smpalt_end = .; |
1604d79d | 195 | } |
f00ec48f | 196 | #endif |
1604d79d | 197 | .init.pv_table : { |
dc21af99 | 198 | __pv_table_begin = .; |
1604d79d | 199 | *(.pv_table) |
dc21af99 | 200 | __pv_table_end = .; |
1604d79d RK |
201 | } |
202 | .init.data : { | |
203 | #ifndef CONFIG_XIP_KERNEL | |
204 | INIT_DATA | |
205 | #endif | |
78d7530a | 206 | INIT_SETUP(16) |
78d7530a NE |
207 | INIT_CALLS |
208 | CON_INITCALL | |
209 | SECURITY_INITCALL | |
210 | INIT_RAM_FS | |
1604d79d | 211 | } |
1da177e4 | 212 | #ifndef CONFIG_XIP_KERNEL |
1604d79d | 213 | .exit.data : { |
a9ad21fe | 214 | ARM_EXIT_KEEP(EXIT_DATA) |
1da177e4 | 215 | } |
1604d79d | 216 | #endif |
1da177e4 | 217 | |
9973290c | 218 | #ifdef CONFIG_SMP |
f0d5375e | 219 | PERCPU_SECTION(L1_CACHE_BYTES) |
9973290c | 220 | #endif |
78d7530a | 221 | |
1da177e4 LT |
222 | #ifdef CONFIG_XIP_KERNEL |
223 | __data_loc = ALIGN(4); /* location in binary */ | |
9d4f13e5 | 224 | . = PAGE_OFFSET + TEXT_OFFSET; |
1da177e4 | 225 | #else |
3835d69a | 226 | __init_end = .; |
4f7a1812 | 227 | . = ALIGN(THREAD_SIZE); |
1da177e4 LT |
228 | __data_loc = .; |
229 | #endif | |
230 | ||
231 | .data : AT(__data_loc) { | |
37efe642 | 232 | _data = .; /* address in memory */ |
8c7e6574 | 233 | _sdata = .; |
1da177e4 LT |
234 | |
235 | /* | |
236 | * first, the init task union, aligned | |
237 | * to an 8192 byte boundary. | |
238 | */ | |
78d7530a | 239 | INIT_TASK_DATA(THREAD_SIZE) |
1da177e4 LT |
240 | |
241 | #ifdef CONFIG_XIP_KERNEL | |
f6430a93 | 242 | . = ALIGN(PAGE_SIZE); |
1da177e4 | 243 | __init_begin = .; |
01ba2bdc | 244 | INIT_DATA |
a9ad21fe | 245 | ARM_EXIT_KEEP(EXIT_DATA) |
f6430a93 | 246 | . = ALIGN(PAGE_SIZE); |
1da177e4 LT |
247 | __init_end = .; |
248 | #endif | |
249 | ||
78d7530a | 250 | NOSAVE_DATA |
f0d5375e WD |
251 | CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) |
252 | READ_MOSTLY_DATA(L1_CACHE_BYTES) | |
1da177e4 LT |
253 | |
254 | /* | |
255 | * and the usual data section | |
256 | */ | |
ca967258 | 257 | DATA_DATA |
1da177e4 LT |
258 | CONSTRUCTORS |
259 | ||
260 | _edata = .; | |
261 | } | |
e98ff7f6 | 262 | _edata_loc = __data_loc + SIZEOF(.data); |
1da177e4 | 263 | |
bc581770 LW |
264 | #ifdef CONFIG_HAVE_TCM |
265 | /* | |
266 | * We align everything to a page boundary so we can | |
267 | * free it after init has commenced and TCM contents have | |
268 | * been copied to its destination. | |
269 | */ | |
270 | .tcm_start : { | |
271 | . = ALIGN(PAGE_SIZE); | |
272 | __tcm_start = .; | |
273 | __itcm_start = .; | |
274 | } | |
275 | ||
276 | /* | |
277 | * Link these to the ITCM RAM | |
278 | * Put VMA to the TCM address and LMA to the common RAM | |
279 | * and we'll upload the contents from RAM to TCM and free | |
280 | * the used RAM after that. | |
281 | */ | |
282 | .text_itcm ITCM_OFFSET : AT(__itcm_start) | |
283 | { | |
284 | __sitcm_text = .; | |
285 | *(.tcm.text) | |
286 | *(.tcm.rodata) | |
287 | . = ALIGN(4); | |
288 | __eitcm_text = .; | |
289 | } | |
290 | ||
291 | /* | |
292 | * Reset the dot pointer, this is needed to create the | |
293 | * relative __dtcm_start below (to be used as extern in code). | |
294 | */ | |
295 | . = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm); | |
296 | ||
297 | .dtcm_start : { | |
298 | __dtcm_start = .; | |
299 | } | |
300 | ||
301 | /* TODO: add remainder of ITCM as well, that can be used for data! */ | |
302 | .data_dtcm DTCM_OFFSET : AT(__dtcm_start) | |
303 | { | |
304 | . = ALIGN(4); | |
305 | __sdtcm_data = .; | |
306 | *(.tcm.data) | |
307 | . = ALIGN(4); | |
308 | __edtcm_data = .; | |
309 | } | |
310 | ||
311 | /* Reset the dot pointer or the linker gets confused */ | |
312 | . = ADDR(.dtcm_start) + SIZEOF(.data_dtcm); | |
313 | ||
314 | /* End marker for freeing TCM copy in linked object */ | |
315 | .tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){ | |
316 | . = ALIGN(PAGE_SIZE); | |
317 | __tcm_end = .; | |
318 | } | |
319 | #endif | |
320 | ||
78d7530a NE |
321 | BSS_SECTION(0, 0, 0) |
322 | _end = .; | |
323 | ||
324 | STABS_DEBUG | |
1da177e4 LT |
325 | .comment 0 : { *(.comment) } |
326 | } | |
327 | ||
728f5c07 RK |
328 | /* |
329 | * These must never be empty | |
330 | * If you have to comment these two assert statements out, your | |
331 | * binutils is too old (for other reasons as well) | |
332 | */ | |
1da177e4 LT |
333 | ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support") |
334 | ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined") | |
0394e1f6 MZ |
335 | /* |
336 | * The HYP init code can't be more than a page long. | |
337 | * The above comment applies as well. | |
338 | */ | |
339 | ASSERT(((__hyp_idmap_text_end - __hyp_idmap_text_start) <= PAGE_SIZE), "HYP init code too big") |