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_MMU |
74 | *(.fixup) | |
75 | *(__ex_table) | |
76 | #endif | |
77 | #ifndef CONFIG_SMP_ON_UP | |
78 | *(.alt.smp.init) | |
79 | #endif | |
6760b109 RK |
80 | *(.discard) |
81 | *(.discard.*) | |
39df8887 RK |
82 | } |
83 | ||
37d07b72 | 84 | #ifdef CONFIG_XIP_KERNEL |
9d4f13e5 | 85 | . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR); |
37d07b72 | 86 | #else |
9d4f13e5 | 87 | . = PAGE_OFFSET + TEXT_OFFSET; |
37d07b72 | 88 | #endif |
1604d79d | 89 | .head.text : { |
e2f81844 | 90 | _text = .; |
1604d79d RK |
91 | HEAD_TEXT |
92 | } | |
3835d69a | 93 | .text : { /* Real text segment */ |
e2f81844 | 94 | _stext = .; /* Text and read-only data */ |
3835d69a RK |
95 | __exception_text_start = .; |
96 | *(.exception.text) | |
97 | __exception_text_end = .; | |
98 | IRQENTRY_TEXT | |
99 | TEXT_TEXT | |
100 | SCHED_TEXT | |
101 | LOCK_TEXT | |
102 | KPROBES_TEXT | |
8903826d | 103 | IDMAP_TEXT |
3835d69a RK |
104 | #ifdef CONFIG_MMU |
105 | *(.fixup) | |
106 | #endif | |
107 | *(.gnu.warning) | |
108 | *(.glue_7) | |
109 | *(.glue_7t) | |
110 | . = ALIGN(4); | |
111 | *(.got) /* Global offset table */ | |
112 | ARM_CPU_KEEP(PROC_INFO) | |
113 | } | |
114 | ||
115 | RO_DATA(PAGE_SIZE) | |
116 | ||
ee951c63 SB |
117 | . = ALIGN(4); |
118 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { | |
119 | __start___ex_table = .; | |
120 | #ifdef CONFIG_MMU | |
121 | *(__ex_table) | |
122 | #endif | |
123 | __stop___ex_table = .; | |
124 | } | |
125 | ||
3835d69a RK |
126 | #ifdef CONFIG_ARM_UNWIND |
127 | /* | |
128 | * Stack unwinding tables | |
129 | */ | |
130 | . = ALIGN(8); | |
131 | .ARM.unwind_idx : { | |
132 | __start_unwind_idx = .; | |
133 | *(.ARM.exidx*) | |
134 | __stop_unwind_idx = .; | |
135 | } | |
136 | .ARM.unwind_tab : { | |
137 | __start_unwind_tab = .; | |
138 | *(.ARM.extab*) | |
139 | __stop_unwind_tab = .; | |
140 | } | |
141 | #endif | |
142 | ||
dad5451a PM |
143 | NOTES |
144 | ||
3835d69a RK |
145 | _etext = .; /* End of text and rodata section */ |
146 | ||
147 | #ifndef CONFIG_XIP_KERNEL | |
148 | . = ALIGN(PAGE_SIZE); | |
149 | __init_begin = .; | |
150 | #endif | |
151 | ||
1604d79d RK |
152 | INIT_TEXT_SECTION(8) |
153 | .exit.text : { | |
154 | ARM_EXIT_KEEP(EXIT_TEXT) | |
155 | } | |
156 | .init.proc.info : { | |
5085f3ff | 157 | ARM_CPU_DISCARD(PROC_INFO) |
1604d79d RK |
158 | } |
159 | .init.arch.info : { | |
1da177e4 | 160 | __arch_info_begin = .; |
1604d79d | 161 | *(.arch.info.init) |
1da177e4 | 162 | __arch_info_end = .; |
1604d79d RK |
163 | } |
164 | .init.tagtable : { | |
1da177e4 | 165 | __tagtable_begin = .; |
1604d79d | 166 | *(.taglist.init) |
1da177e4 | 167 | __tagtable_end = .; |
1604d79d | 168 | } |
f00ec48f | 169 | #ifdef CONFIG_SMP_ON_UP |
1604d79d | 170 | .init.smpalt : { |
f00ec48f | 171 | __smpalt_begin = .; |
1604d79d | 172 | *(.alt.smp.init) |
f00ec48f | 173 | __smpalt_end = .; |
1604d79d | 174 | } |
f00ec48f | 175 | #endif |
1604d79d | 176 | .init.pv_table : { |
dc21af99 | 177 | __pv_table_begin = .; |
1604d79d | 178 | *(.pv_table) |
dc21af99 | 179 | __pv_table_end = .; |
1604d79d RK |
180 | } |
181 | .init.data : { | |
182 | #ifndef CONFIG_XIP_KERNEL | |
183 | INIT_DATA | |
184 | #endif | |
78d7530a | 185 | INIT_SETUP(16) |
78d7530a NE |
186 | INIT_CALLS |
187 | CON_INITCALL | |
188 | SECURITY_INITCALL | |
189 | INIT_RAM_FS | |
1604d79d | 190 | } |
1da177e4 | 191 | #ifndef CONFIG_XIP_KERNEL |
1604d79d | 192 | .exit.data : { |
a9ad21fe | 193 | ARM_EXIT_KEEP(EXIT_DATA) |
1da177e4 | 194 | } |
1604d79d | 195 | #endif |
1da177e4 | 196 | |
9973290c | 197 | #ifdef CONFIG_SMP |
f0d5375e | 198 | PERCPU_SECTION(L1_CACHE_BYTES) |
9973290c | 199 | #endif |
78d7530a | 200 | |
1da177e4 LT |
201 | #ifdef CONFIG_XIP_KERNEL |
202 | __data_loc = ALIGN(4); /* location in binary */ | |
9d4f13e5 | 203 | . = PAGE_OFFSET + TEXT_OFFSET; |
1da177e4 | 204 | #else |
3835d69a | 205 | __init_end = .; |
4f7a1812 | 206 | . = ALIGN(THREAD_SIZE); |
1da177e4 LT |
207 | __data_loc = .; |
208 | #endif | |
209 | ||
210 | .data : AT(__data_loc) { | |
37efe642 | 211 | _data = .; /* address in memory */ |
8c7e6574 | 212 | _sdata = .; |
1da177e4 LT |
213 | |
214 | /* | |
215 | * first, the init task union, aligned | |
216 | * to an 8192 byte boundary. | |
217 | */ | |
78d7530a | 218 | INIT_TASK_DATA(THREAD_SIZE) |
1da177e4 LT |
219 | |
220 | #ifdef CONFIG_XIP_KERNEL | |
f6430a93 | 221 | . = ALIGN(PAGE_SIZE); |
1da177e4 | 222 | __init_begin = .; |
01ba2bdc | 223 | INIT_DATA |
a9ad21fe | 224 | ARM_EXIT_KEEP(EXIT_DATA) |
f6430a93 | 225 | . = ALIGN(PAGE_SIZE); |
1da177e4 LT |
226 | __init_end = .; |
227 | #endif | |
228 | ||
78d7530a | 229 | NOSAVE_DATA |
f0d5375e WD |
230 | CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) |
231 | READ_MOSTLY_DATA(L1_CACHE_BYTES) | |
1da177e4 LT |
232 | |
233 | /* | |
234 | * and the usual data section | |
235 | */ | |
ca967258 | 236 | DATA_DATA |
1da177e4 LT |
237 | CONSTRUCTORS |
238 | ||
239 | _edata = .; | |
240 | } | |
e98ff7f6 | 241 | _edata_loc = __data_loc + SIZEOF(.data); |
1da177e4 | 242 | |
bc581770 LW |
243 | #ifdef CONFIG_HAVE_TCM |
244 | /* | |
245 | * We align everything to a page boundary so we can | |
246 | * free it after init has commenced and TCM contents have | |
247 | * been copied to its destination. | |
248 | */ | |
249 | .tcm_start : { | |
250 | . = ALIGN(PAGE_SIZE); | |
251 | __tcm_start = .; | |
252 | __itcm_start = .; | |
253 | } | |
254 | ||
255 | /* | |
256 | * Link these to the ITCM RAM | |
257 | * Put VMA to the TCM address and LMA to the common RAM | |
258 | * and we'll upload the contents from RAM to TCM and free | |
259 | * the used RAM after that. | |
260 | */ | |
261 | .text_itcm ITCM_OFFSET : AT(__itcm_start) | |
262 | { | |
263 | __sitcm_text = .; | |
264 | *(.tcm.text) | |
265 | *(.tcm.rodata) | |
266 | . = ALIGN(4); | |
267 | __eitcm_text = .; | |
268 | } | |
269 | ||
270 | /* | |
271 | * Reset the dot pointer, this is needed to create the | |
272 | * relative __dtcm_start below (to be used as extern in code). | |
273 | */ | |
274 | . = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm); | |
275 | ||
276 | .dtcm_start : { | |
277 | __dtcm_start = .; | |
278 | } | |
279 | ||
280 | /* TODO: add remainder of ITCM as well, that can be used for data! */ | |
281 | .data_dtcm DTCM_OFFSET : AT(__dtcm_start) | |
282 | { | |
283 | . = ALIGN(4); | |
284 | __sdtcm_data = .; | |
285 | *(.tcm.data) | |
286 | . = ALIGN(4); | |
287 | __edtcm_data = .; | |
288 | } | |
289 | ||
290 | /* Reset the dot pointer or the linker gets confused */ | |
291 | . = ADDR(.dtcm_start) + SIZEOF(.data_dtcm); | |
292 | ||
293 | /* End marker for freeing TCM copy in linked object */ | |
294 | .tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){ | |
295 | . = ALIGN(PAGE_SIZE); | |
296 | __tcm_end = .; | |
297 | } | |
298 | #endif | |
299 | ||
78d7530a NE |
300 | BSS_SECTION(0, 0, 0) |
301 | _end = .; | |
302 | ||
303 | STABS_DEBUG | |
1da177e4 LT |
304 | .comment 0 : { *(.comment) } |
305 | } | |
306 | ||
728f5c07 RK |
307 | /* |
308 | * These must never be empty | |
309 | * If you have to comment these two assert statements out, your | |
310 | * binutils is too old (for other reasons as well) | |
311 | */ | |
1da177e4 LT |
312 | ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support") |
313 | ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined") | |
0394e1f6 MZ |
314 | /* |
315 | * The HYP init code can't be more than a page long. | |
316 | * The above comment applies as well. | |
317 | */ | |
318 | ASSERT(((__hyp_idmap_text_end - __hyp_idmap_text_start) <= PAGE_SIZE), "HYP init code too big") |