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v3.5.6
  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>
  7#include <asm/cache.h>
  8#include <asm/thread_info.h>
  9#include <asm/memory.h>
 10#include <asm/page.h>
 11	
 
 12#define PROC_INFO							\
 13	. = ALIGN(4);							\
 14	VMLINUX_SYMBOL(__proc_info_begin) = .;				\
 15	*(.proc.info.init)						\
 16	VMLINUX_SYMBOL(__proc_info_end) = .;
 17
 
 
 
 
 
 18#define IDMAP_TEXT							\
 19	ALIGN_FUNCTION();						\
 20	VMLINUX_SYMBOL(__idmap_text_start) = .;				\
 21	*(.idmap.text)							\
 22	VMLINUX_SYMBOL(__idmap_text_end) = .;
 
 
 
 
 23
 24#ifdef CONFIG_HOTPLUG_CPU
 25#define ARM_CPU_DISCARD(x)
 26#define ARM_CPU_KEEP(x)		x
 27#else
 28#define ARM_CPU_DISCARD(x)	x
 29#define ARM_CPU_KEEP(x)
 30#endif
 31
 32#if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
 33	defined(CONFIG_GENERIC_BUG)
 34#define ARM_EXIT_KEEP(x)	x
 35#define ARM_EXIT_DISCARD(x)
 36#else
 37#define ARM_EXIT_KEEP(x)
 38#define ARM_EXIT_DISCARD(x)	x
 39#endif
 40
 41OUTPUT_ARCH(arm)
 42ENTRY(stext)
 43
 44#ifndef __ARMEB__
 45jiffies = jiffies_64;
 46#else
 47jiffies = jiffies_64 + 4;
 48#endif
 49
 50SECTIONS
 51{
 52	/*
 53	 * XXX: The linker does not define how output sections are
 54	 * assigned to input sections when there are multiple statements
 55	 * matching the same input section name.  There is no documented
 56	 * order of matching.
 57	 *
 58	 * unwind exit sections must be discarded before the rest of the
 59	 * unwind sections get included.
 60	 */
 61	/DISCARD/ : {
 62		*(.ARM.exidx.exit.text)
 63		*(.ARM.extab.exit.text)
 64		ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))
 65		ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))
 66		ARM_EXIT_DISCARD(EXIT_TEXT)
 67		ARM_EXIT_DISCARD(EXIT_DATA)
 68		EXIT_CALL
 69#ifndef CONFIG_HOTPLUG
 70		*(.ARM.exidx.devexit.text)
 71		*(.ARM.extab.devexit.text)
 72#endif
 73#ifndef CONFIG_MMU
 74		*(.fixup)
 75		*(__ex_table)
 76#endif
 77#ifndef CONFIG_SMP_ON_UP
 78		*(.alt.smp.init)
 79#endif
 80		*(.discard)
 81		*(.discard.*)
 82	}
 83
 84#ifdef CONFIG_XIP_KERNEL
 85	. = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);
 86#else
 87	. = PAGE_OFFSET + TEXT_OFFSET;
 88#endif
 89	.head.text : {
 90		_text = .;
 91		HEAD_TEXT
 92	}
 
 
 
 
 
 93	.text : {			/* Real text segment		*/
 94		_stext = .;		/* Text and read-only data	*/
 
 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
103			IDMAP_TEXT
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
 
 
 
 
 
 
 
 
 
117#ifdef CONFIG_ARM_UNWIND
118	/*
119	 * Stack unwinding tables
120	 */
121	. = ALIGN(8);
122	.ARM.unwind_idx : {
123		__start_unwind_idx = .;
124		*(.ARM.exidx*)
125		__stop_unwind_idx = .;
126	}
127	.ARM.unwind_tab : {
128		__start_unwind_tab = .;
129		*(.ARM.extab*)
130		__stop_unwind_tab = .;
131	}
132#endif
133
 
 
134	_etext = .;			/* End of text and rodata section */
135
136#ifndef CONFIG_XIP_KERNEL
 
 
137	. = ALIGN(PAGE_SIZE);
138	__init_begin = .;
139#endif
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
140
141	INIT_TEXT_SECTION(8)
142	.exit.text : {
143		ARM_EXIT_KEEP(EXIT_TEXT)
144	}
145	.init.proc.info : {
146		ARM_CPU_DISCARD(PROC_INFO)
147	}
148	.init.arch.info : {
149		__arch_info_begin = .;
150		*(.arch.info.init)
151		__arch_info_end = .;
152	}
153	.init.tagtable : {
154		__tagtable_begin = .;
155		*(.taglist.init)
156		__tagtable_end = .;
157	}
158#ifdef CONFIG_SMP_ON_UP
159	.init.smpalt : {
160		__smpalt_begin = .;
161		*(.alt.smp.init)
162		__smpalt_end = .;
163	}
164#endif
165	.init.pv_table : {
166		__pv_table_begin = .;
167		*(.pv_table)
168		__pv_table_end = .;
169	}
170	.init.data : {
171#ifndef CONFIG_XIP_KERNEL
172		INIT_DATA
173#endif
174		INIT_SETUP(16)
175		INIT_CALLS
176		CON_INITCALL
177		SECURITY_INITCALL
178		INIT_RAM_FS
179	}
180#ifndef CONFIG_XIP_KERNEL
181	.exit.data : {
182		ARM_EXIT_KEEP(EXIT_DATA)
183	}
184#endif
185
186#ifdef CONFIG_SMP
187	PERCPU_SECTION(L1_CACHE_BYTES)
188#endif
189
190#ifdef CONFIG_XIP_KERNEL
191	__data_loc = ALIGN(4);		/* location in binary */
192	. = PAGE_OFFSET + TEXT_OFFSET;
193#else
194	__init_end = .;
195	. = ALIGN(THREAD_SIZE);
196	__data_loc = .;
197#endif
 
 
198
199	.data : AT(__data_loc) {
200		_data = .;		/* address in memory */
201		_sdata = .;
202
203		/*
204		 * first, the init task union, aligned
205		 * to an 8192 byte boundary.
206		 */
207		INIT_TASK_DATA(THREAD_SIZE)
208
209#ifdef CONFIG_XIP_KERNEL
210		. = ALIGN(PAGE_SIZE);
211		__init_begin = .;
212		INIT_DATA
213		ARM_EXIT_KEEP(EXIT_DATA)
214		. = ALIGN(PAGE_SIZE);
215		__init_end = .;
216#endif
217
218		NOSAVE_DATA
219		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
220		READ_MOSTLY_DATA(L1_CACHE_BYTES)
221
222		/*
223		 * The exception fixup table (might need resorting at runtime)
224		 */
225		. = ALIGN(4);
226		__start___ex_table = .;
227#ifdef CONFIG_MMU
228		*(__ex_table)
229#endif
230		__stop___ex_table = .;
231
232		/*
233		 * and the usual data section
234		 */
235		DATA_DATA
236		CONSTRUCTORS
237
238		_edata = .;
239	}
240	_edata_loc = __data_loc + SIZEOF(.data);
241
242#ifdef CONFIG_HAVE_TCM
243        /*
244	 * We align everything to a page boundary so we can
245	 * free it after init has commenced and TCM contents have
246	 * been copied to its destination.
247	 */
248	.tcm_start : {
249		. = ALIGN(PAGE_SIZE);
250		__tcm_start = .;
251		__itcm_start = .;
252	}
253
254	/*
255	 * Link these to the ITCM RAM
256	 * Put VMA to the TCM address and LMA to the common RAM
257	 * and we'll upload the contents from RAM to TCM and free
258	 * the used RAM after that.
259	 */
260	.text_itcm ITCM_OFFSET : AT(__itcm_start)
261	{
262		__sitcm_text = .;
263		*(.tcm.text)
264		*(.tcm.rodata)
265		. = ALIGN(4);
266		__eitcm_text = .;
267	}
268
269	/*
270	 * Reset the dot pointer, this is needed to create the
271	 * relative __dtcm_start below (to be used as extern in code).
272	 */
273	. = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm);
274
275	.dtcm_start : {
276		__dtcm_start = .;
277	}
278
279	/* TODO: add remainder of ITCM as well, that can be used for data! */
280	.data_dtcm DTCM_OFFSET : AT(__dtcm_start)
281	{
282		. = ALIGN(4);
283		__sdtcm_data = .;
284		*(.tcm.data)
285		. = ALIGN(4);
286		__edtcm_data = .;
287	}
288
289	/* Reset the dot pointer or the linker gets confused */
290	. = ADDR(.dtcm_start) + SIZEOF(.data_dtcm);
291
292	/* End marker for freeing TCM copy in linked object */
293	.tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){
294		. = ALIGN(PAGE_SIZE);
295		__tcm_end = .;
296	}
297#endif
298
299	NOTES
300
301	BSS_SECTION(0, 0, 0)
302	_end = .;
303
304	STABS_DEBUG
305	.comment 0 : { *(.comment) }
306}
307
 
 
 
 
 
 
 
 
 
308/*
309 * These must never be empty
310 * If you have to comment these two assert statements out, your
311 * binutils is too old (for other reasons as well)
312 */
313ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
314ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
v4.6
  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#ifdef CONFIG_XIP_KERNEL
  7#include "vmlinux-xip.lds.S"
  8#else
  9
 10#include <asm-generic/vmlinux.lds.h>
 11#include <asm/cache.h>
 12#include <asm/thread_info.h>
 13#include <asm/memory.h>
 14#include <asm/page.h>
 15#include <asm/pgtable.h>
 16
 17#define PROC_INFO							\
 18	. = ALIGN(4);							\
 19	VMLINUX_SYMBOL(__proc_info_begin) = .;				\
 20	*(.proc.info.init)						\
 21	VMLINUX_SYMBOL(__proc_info_end) = .;
 22
 23#define HYPERVISOR_TEXT							\
 24	VMLINUX_SYMBOL(__hyp_text_start) = .;				\
 25	*(.hyp.text)							\
 26	VMLINUX_SYMBOL(__hyp_text_end) = .;
 27
 28#define IDMAP_TEXT							\
 29	ALIGN_FUNCTION();						\
 30	VMLINUX_SYMBOL(__idmap_text_start) = .;				\
 31	*(.idmap.text)							\
 32	VMLINUX_SYMBOL(__idmap_text_end) = .;				\
 33	. = ALIGN(PAGE_SIZE);						\
 34	VMLINUX_SYMBOL(__hyp_idmap_text_start) = .;			\
 35	*(.hyp.idmap.text)						\
 36	VMLINUX_SYMBOL(__hyp_idmap_text_end) = .;
 37
 38#ifdef CONFIG_HOTPLUG_CPU
 39#define ARM_CPU_DISCARD(x)
 40#define ARM_CPU_KEEP(x)		x
 41#else
 42#define ARM_CPU_DISCARD(x)	x
 43#define ARM_CPU_KEEP(x)
 44#endif
 45
 46#if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
 47	defined(CONFIG_GENERIC_BUG)
 48#define ARM_EXIT_KEEP(x)	x
 49#define ARM_EXIT_DISCARD(x)
 50#else
 51#define ARM_EXIT_KEEP(x)
 52#define ARM_EXIT_DISCARD(x)	x
 53#endif
 54
 55OUTPUT_ARCH(arm)
 56ENTRY(stext)
 57
 58#ifndef __ARMEB__
 59jiffies = jiffies_64;
 60#else
 61jiffies = jiffies_64 + 4;
 62#endif
 63
 64SECTIONS
 65{
 66	/*
 67	 * XXX: The linker does not define how output sections are
 68	 * assigned to input sections when there are multiple statements
 69	 * matching the same input section name.  There is no documented
 70	 * order of matching.
 71	 *
 72	 * unwind exit sections must be discarded before the rest of the
 73	 * unwind sections get included.
 74	 */
 75	/DISCARD/ : {
 76		*(.ARM.exidx.exit.text)
 77		*(.ARM.extab.exit.text)
 78		ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))
 79		ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))
 80		ARM_EXIT_DISCARD(EXIT_TEXT)
 81		ARM_EXIT_DISCARD(EXIT_DATA)
 82		EXIT_CALL
 
 
 
 
 83#ifndef CONFIG_MMU
 84		*(.text.fixup)
 85		*(__ex_table)
 86#endif
 87#ifndef CONFIG_SMP_ON_UP
 88		*(.alt.smp.init)
 89#endif
 90		*(.discard)
 91		*(.discard.*)
 92	}
 93
 
 
 
 94	. = PAGE_OFFSET + TEXT_OFFSET;
 
 95	.head.text : {
 96		_text = .;
 97		HEAD_TEXT
 98	}
 99
100#ifdef CONFIG_DEBUG_RODATA
101	. = ALIGN(1<<SECTION_SHIFT);
102#endif
103
104	.text : {			/* Real text segment		*/
105		_stext = .;		/* Text and read-only data	*/
106			IDMAP_TEXT
107			__exception_text_start = .;
108			*(.exception.text)
109			__exception_text_end = .;
110			IRQENTRY_TEXT
111			SOFTIRQENTRY_TEXT
112			TEXT_TEXT
113			SCHED_TEXT
114			LOCK_TEXT
115			HYPERVISOR_TEXT
116			KPROBES_TEXT
 
 
 
 
117			*(.gnu.warning)
118			*(.glue_7)
119			*(.glue_7t)
120		. = ALIGN(4);
121		*(.got)			/* Global offset table		*/
122			ARM_CPU_KEEP(PROC_INFO)
123	}
124
125#ifdef CONFIG_DEBUG_ALIGN_RODATA
126	. = ALIGN(1<<SECTION_SHIFT);
127#endif
128	RO_DATA(PAGE_SIZE)
129
130	. = ALIGN(4);
131	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
132		__start___ex_table = .;
133#ifdef CONFIG_MMU
134		*(__ex_table)
135#endif
136		__stop___ex_table = .;
137	}
138
139#ifdef CONFIG_ARM_UNWIND
140	/*
141	 * Stack unwinding tables
142	 */
143	. = ALIGN(8);
144	.ARM.unwind_idx : {
145		__start_unwind_idx = .;
146		*(.ARM.exidx*)
147		__stop_unwind_idx = .;
148	}
149	.ARM.unwind_tab : {
150		__start_unwind_tab = .;
151		*(.ARM.extab*)
152		__stop_unwind_tab = .;
153	}
154#endif
155
156	NOTES
157
158	_etext = .;			/* End of text and rodata section */
159
160#ifdef CONFIG_DEBUG_RODATA
161	. = ALIGN(1<<SECTION_SHIFT);
162#else
163	. = ALIGN(PAGE_SIZE);
 
164#endif
165	__init_begin = .;
166
167	/*
168	 * The vectors and stubs are relocatable code, and the
169	 * only thing that matters is their relative offsets
170	 */
171	__vectors_start = .;
172	.vectors 0xffff0000 : AT(__vectors_start) {
173		*(.vectors)
174	}
175	. = __vectors_start + SIZEOF(.vectors);
176	__vectors_end = .;
177
178	__stubs_start = .;
179	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {
180		*(.stubs)
181	}
182	. = __stubs_start + SIZEOF(.stubs);
183	__stubs_end = .;
184
185	PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
186
187	INIT_TEXT_SECTION(8)
188	.exit.text : {
189		ARM_EXIT_KEEP(EXIT_TEXT)
190	}
191	.init.proc.info : {
192		ARM_CPU_DISCARD(PROC_INFO)
193	}
194	.init.arch.info : {
195		__arch_info_begin = .;
196		*(.arch.info.init)
197		__arch_info_end = .;
198	}
199	.init.tagtable : {
200		__tagtable_begin = .;
201		*(.taglist.init)
202		__tagtable_end = .;
203	}
204#ifdef CONFIG_SMP_ON_UP
205	.init.smpalt : {
206		__smpalt_begin = .;
207		*(.alt.smp.init)
208		__smpalt_end = .;
209	}
210#endif
211	.init.pv_table : {
212		__pv_table_begin = .;
213		*(.pv_table)
214		__pv_table_end = .;
215	}
216	.init.data : {
 
217		INIT_DATA
 
218		INIT_SETUP(16)
219		INIT_CALLS
220		CON_INITCALL
221		SECURITY_INITCALL
222		INIT_RAM_FS
223	}
 
224	.exit.data : {
225		ARM_EXIT_KEEP(EXIT_DATA)
226	}
 
227
228#ifdef CONFIG_SMP
229	PERCPU_SECTION(L1_CACHE_BYTES)
230#endif
231
232#ifdef CONFIG_DEBUG_RODATA
233	. = ALIGN(1<<SECTION_SHIFT);
 
234#else
 
235	. = ALIGN(THREAD_SIZE);
 
236#endif
237	__init_end = .;
238	__data_loc = .;
239
240	.data : AT(__data_loc) {
241		_data = .;		/* address in memory */
242		_sdata = .;
243
244		/*
245		 * first, the init task union, aligned
246		 * to an 8192 byte boundary.
247		 */
248		INIT_TASK_DATA(THREAD_SIZE)
249
 
 
 
 
 
 
 
 
 
250		NOSAVE_DATA
251		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
252		READ_MOSTLY_DATA(L1_CACHE_BYTES)
253
254		/*
 
 
 
 
 
 
 
 
 
 
255		 * and the usual data section
256		 */
257		DATA_DATA
258		CONSTRUCTORS
259
260		_edata = .;
261	}
262	_edata_loc = __data_loc + SIZEOF(.data);
263
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
 
 
321	BSS_SECTION(0, 0, 0)
322	_end = .;
323
324	STABS_DEBUG
 
325}
326
327#ifdef CONFIG_DEBUG_RODATA
328/*
329 * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will
330 * be the first section-aligned location after __start_rodata. Otherwise,
331 * it will be equal to __start_rodata.
332 */
333__start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT);
334#endif
335
336/*
337 * These must never be empty
338 * If you have to comment these two assert statements out, your
339 * binutils is too old (for other reasons as well)
340 */
341ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
342ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
343
344/*
345 * The HYP init code can't be more than a page long,
346 * and should not cross a page boundary.
347 * The above comment applies as well.
348 */
349ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & PAGE_MASK) <= PAGE_SIZE,
350	"HYP init code too big or misaligned")
351
352#endif /* CONFIG_XIP_KERNEL */