1 /* SPDX-License-Identifier: GPL-2.0 */ !! 1 /* ld script to make i386 Linux kernel
2 /* !! 2 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
3 * ld script to make ARM Linux kernel <<
4 * taken from the i386 version by Russell King <<
5 * Written by Martin Mares <mj@atrey.karlin.mff <<
6 */ 3 */
7 4
8 #include <asm/hyp_image.h> <<
9 #ifdef CONFIG_KVM <<
10 #define HYPERVISOR_EXTABLE <<
11 . = ALIGN(SZ_8); <<
12 __start___kvm_ex_table = .; <<
13 *(__kvm_ex_table) <<
14 __stop___kvm_ex_table = .; <<
15 <<
16 #define HYPERVISOR_DATA_SECTIONS <<
17 HYP_SECTION_NAME(.rodata) : { <<
18 . = ALIGN(PAGE_SIZE); <<
19 __hyp_rodata_start = .; <<
20 *(HYP_SECTION_NAME(.data..ro_a <<
21 *(HYP_SECTION_NAME(.rodata)) <<
22 . = ALIGN(PAGE_SIZE); <<
23 __hyp_rodata_end = .; <<
24 } <<
25 <<
26 #define HYPERVISOR_PERCPU_SECTION <<
27 . = ALIGN(PAGE_SIZE); <<
28 HYP_SECTION_NAME(.data..percpu) : { <<
29 *(HYP_SECTION_NAME(.data..perc <<
30 } <<
31 <<
32 #define HYPERVISOR_RELOC_SECTION <<
33 .hyp.reloc : ALIGN(4) { <<
34 __hyp_reloc_begin = .; <<
35 *(.hyp.reloc) <<
36 __hyp_reloc_end = .; <<
37 } <<
38 <<
39 #define BSS_FIRST_SECTIONS <<
40 __hyp_bss_start = .; <<
41 *(HYP_SECTION_NAME(.bss)) <<
42 . = ALIGN(PAGE_SIZE); <<
43 __hyp_bss_end = .; <<
44 <<
45 /* <<
46 * We require that __hyp_bss_start and __bss_s <<
47 * with an assertion. But the BSS_SECTION macr <<
48 * between them, which can in some cases cause <<
49 * work around the issue, force a page alignme <<
50 */ <<
51 #define SBSS_ALIGN PAGE_S <<
52 #else /* CONFIG_KVM */ <<
53 #define HYPERVISOR_EXTABLE <<
54 #define HYPERVISOR_DATA_SECTIONS <<
55 #define HYPERVISOR_PERCPU_SECTION <<
56 #define HYPERVISOR_RELOC_SECTION <<
57 #define SBSS_ALIGN 0 <<
58 #endif <<
59 <<
60 #define RO_EXCEPTION_TABLE_ALIGN 4 <<
61 #define RUNTIME_DISCARD_EXIT <<
62 <<
63 #include <asm-generic/vmlinux.lds.h> 5 #include <asm-generic/vmlinux.lds.h>
64 #include <asm/cache.h> !! 6
65 #include <asm/kernel-pgtable.h> !! 7 OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
66 #include <asm/kexec.h> !! 8 OUTPUT_ARCH(i386)
67 #include <asm/memory.h> !! 9 ENTRY(startup_32)
68 #include <asm/page.h> <<
69 <<
70 #include "image.h" <<
71 <<
72 OUTPUT_ARCH(aarch64) <<
73 ENTRY(_text) <<
74 <<
75 jiffies = jiffies_64; 10 jiffies = jiffies_64;
76 <<
77 #define HYPERVISOR_TEXT <<
78 . = ALIGN(PAGE_SIZE); <<
79 __hyp_idmap_text_start = .; <<
80 *(.hyp.idmap.text) <<
81 __hyp_idmap_text_end = .; <<
82 __hyp_text_start = .; <<
83 *(.hyp.text) <<
84 HYPERVISOR_EXTABLE <<
85 . = ALIGN(PAGE_SIZE); <<
86 __hyp_text_end = .; <<
87 <<
88 #define IDMAP_TEXT <<
89 . = ALIGN(SZ_4K); <<
90 __idmap_text_start = .; <<
91 *(.idmap.text) <<
92 __idmap_text_end = .; <<
93 <<
94 #ifdef CONFIG_HIBERNATION <<
95 #define HIBERNATE_TEXT <<
96 ALIGN_FUNCTION(); <<
97 __hibernate_exit_text_start = .; <<
98 *(.hibernate_exit.text) <<
99 __hibernate_exit_text_end = .; <<
100 #else <<
101 #define HIBERNATE_TEXT <<
102 #endif <<
103 <<
104 #ifdef CONFIG_KEXEC_CORE <<
105 #define KEXEC_TEXT <<
106 ALIGN_FUNCTION(); <<
107 __relocate_new_kernel_start = .; <<
108 *(.kexec_relocate.text) <<
109 __relocate_new_kernel_end = .; <<
110 #else <<
111 #define KEXEC_TEXT <<
112 #endif <<
113 <<
114 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 <<
115 #define TRAMP_TEXT <<
116 . = ALIGN(PAGE_SIZE); <<
117 __entry_tramp_text_start = .; <<
118 *(.entry.tramp.text) <<
119 . = ALIGN(PAGE_SIZE); <<
120 __entry_tramp_text_end = .; <<
121 *(.entry.tramp.rodata) <<
122 #else <<
123 #define TRAMP_TEXT <<
124 #endif <<
125 <<
126 #ifdef CONFIG_UNWIND_TABLES <<
127 #define UNWIND_DATA_SECTIONS <<
128 .eh_frame : { <<
129 __pi___eh_frame_start = .; <<
130 *(.eh_frame) <<
131 __pi___eh_frame_end = .; <<
132 } <<
133 #else <<
134 #define UNWIND_DATA_SECTIONS <<
135 #endif <<
136 <<
137 /* <<
138 * The size of the PE/COFF section that covers <<
139 * runs from _stext to _edata, must be a round <<
140 * FileAlignment, which we set to its minimum <<
141 * itself is 4 KB aligned, so padding out _eda <<
142 * boundary should be sufficient. <<
143 */ <<
144 PECOFF_FILE_ALIGNMENT = 0x200; <<
145 <<
146 #ifdef CONFIG_EFI <<
147 #define PECOFF_EDATA_PADDING \ <<
148 .pecoff_edata_padding : { BYTE(0); . = <<
149 #else <<
150 #define PECOFF_EDATA_PADDING <<
151 #endif <<
152 <<
153 SECTIONS 11 SECTIONS
154 { 12 {
155 /* !! 13 . = 0xC0000000 + 0x100000;
156 * XXX: The linker does not define how !! 14 /* read-only */
157 * assigned to input sections when the !! 15 _text = .; /* Text and read-only data */
158 * matching the same input section nam !! 16 .text : {
159 * order of matching. !! 17 *(.text)
160 */ !! 18 *(.fixup)
161 DISCARDS !! 19 *(.gnu.warning)
162 /DISCARD/ : { !! 20 } = 0x9090
163 *(.interp .dynamic) !! 21
164 *(.dynsym .dynstr .hash .gnu.h !! 22 _etext = .; /* End of text section */
165 } !! 23
166 !! 24 . = ALIGN(16); /* Exception table */
167 . = KIMAGE_VADDR; !! 25 __start___ex_table = .;
168 !! 26 __ex_table : { *(__ex_table) }
169 .head.text : { !! 27 __stop___ex_table = .;
170 _text = .; !! 28
171 HEAD_TEXT !! 29 RODATA
172 } !! 30
173 .text : ALIGN(SEGMENT_ALIGN) { /* Rea !! 31 /* writeable */
174 _stext = .; /* Tex !! 32 .data : { /* Data */
175 IRQENTRY_TEXT !! 33 *(.data)
176 SOFTIRQENTRY_TEXT !! 34 CONSTRUCTORS
177 ENTRY_TEXT !! 35 }
178 TEXT_TEXT !! 36
179 SCHED_TEXT !! 37 . = ALIGN(4096);
180 LOCK_TEXT !! 38 __nosave_begin = .;
181 KPROBES_TEXT !! 39 .data_nosave : { *(.data.nosave) }
182 HYPERVISOR_TEXT !! 40 . = ALIGN(4096);
183 *(.gnu.warning) !! 41 __nosave_end = .;
184 } !! 42
185 !! 43 . = ALIGN(4096);
186 . = ALIGN(SEGMENT_ALIGN); !! 44 .data.page_aligned : { *(.data.idt) }
187 _etext = .; /* End !! 45
188 !! 46 . = ALIGN(32);
189 /* everything from this point to __ini !! 47 .data.cacheline_aligned : { *(.data.cacheline_aligned) }
190 RO_DATA(PAGE_SIZE) !! 48
191 !! 49 _edata = .; /* End of data section */
192 HYPERVISOR_DATA_SECTIONS !! 50
193 !! 51 . = ALIGN(8192); /* init_task */
194 .got : { *(.got) } !! 52 .data.init_task : { *(.data.init_task) }
195 /* !! 53
196 * Make sure that the .got.plt is eith !! 54 /* will be freed after init */
197 * contains only the lazy dispatch ent !! 55 . = ALIGN(4096); /* Init code and data */
198 */ !! 56 __init_begin = .;
199 .got.plt : { *(.got.plt) } !! 57 .init.text : {
200 ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF !! 58 _sinittext = .;
201 "Unexpected GOT/PLT entries det !! 59 *(.init.text)
202 !! 60 _einittext = .;
203 /* code sections that are never execut !! 61 }
204 .rodata.text : { !! 62 .init.data : { *(.init.data) }
205 TRAMP_TEXT !! 63 . = ALIGN(16);
206 HIBERNATE_TEXT !! 64 __setup_start = .;
207 KEXEC_TEXT !! 65 .init.setup : { *(.init.setup) }
208 IDMAP_TEXT !! 66 __setup_end = .;
209 . = ALIGN(PAGE_SIZE); !! 67 __start___param = .;
210 } !! 68 __param : { *(__param) }
211 !! 69 __stop___param = .;
212 idmap_pg_dir = .; !! 70 __initcall_start = .;
213 . += PAGE_SIZE; !! 71 .initcall.init : {
214 !! 72 *(.initcall1.init)
215 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 !! 73 *(.initcall2.init)
216 tramp_pg_dir = .; !! 74 *(.initcall3.init)
217 . += PAGE_SIZE; !! 75 *(.initcall4.init)
218 #endif !! 76 *(.initcall5.init)
219 !! 77 *(.initcall6.init)
220 reserved_pg_dir = .; !! 78 *(.initcall7.init)
221 . += PAGE_SIZE; !! 79 }
222 !! 80 __initcall_end = .;
223 swapper_pg_dir = .; !! 81 __con_initcall_start = .;
224 . += PAGE_SIZE; !! 82 .con_initcall.init : { *(.con_initcall.init) }
225 !! 83 __con_initcall_end = .;
226 . = ALIGN(SEGMENT_ALIGN); !! 84 SECURITY_INIT
227 __init_begin = .; !! 85 . = ALIGN(4);
228 __inittext_begin = .; !! 86 __alt_instructions = .;
229 !! 87 .altinstructions : { *(.altinstructions) }
230 INIT_TEXT_SECTION(8) !! 88 __alt_instructions_end = .;
231 !! 89 .altinstr_replacement : { *(.altinstr_replacement) }
232 __exittext_begin = .; !! 90 /* .exit.text is discard at runtime, not link time, to deal with references
233 .exit.text : { !! 91 from .altinstructions and .eh_frame */
234 EXIT_TEXT !! 92 .exit.text : { *(.exit.text) }
235 } !! 93 .exit.data : { *(.exit.data) }
236 __exittext_end = .; !! 94 . = ALIGN(4096);
237 !! 95 __initramfs_start = .;
238 . = ALIGN(4); !! 96 .init.ramfs : { *(.init.ramfs) }
239 .altinstructions : { !! 97 __initramfs_end = .;
240 __alt_instructions = .; !! 98 . = ALIGN(32);
241 *(.altinstructions) !! 99 __per_cpu_start = .;
242 __alt_instructions_end = .; !! 100 .data.percpu : { *(.data.percpu) }
243 } !! 101 __per_cpu_end = .;
244 !! 102 . = ALIGN(4096);
245 UNWIND_DATA_SECTIONS !! 103 __init_end = .;
246 !! 104 /* freed after init ends here */
247 . = ALIGN(SEGMENT_ALIGN); !! 105
248 __inittext_end = .; !! 106 __bss_start = .; /* BSS */
249 __initdata_begin = .; !! 107 .bss : { *(.bss) }
250 !! 108 __bss_stop = .;
251 init_idmap_pg_dir = .; !! 109
252 . += INIT_IDMAP_DIR_SIZE; !! 110 _end = . ;
253 init_idmap_pg_end = .; !! 111
254 !! 112 /* Sections to be discarded */
255 .init.data : { !! 113 /DISCARD/ : {
256 INIT_DATA !! 114 *(.exitcall.exit)
257 INIT_SETUP(16) !! 115 }
258 INIT_CALLS !! 116
259 CON_INITCALL !! 117 /* Stabs debugging sections. */
260 INIT_RAM_FS !! 118 .stab 0 : { *(.stab) }
261 *(.init.altinstructions .init. !! 119 .stabstr 0 : { *(.stabstr) }
262 } !! 120 .stab.excl 0 : { *(.stab.excl) }
263 .exit.data : { !! 121 .stab.exclstr 0 : { *(.stab.exclstr) }
264 EXIT_DATA !! 122 .stab.index 0 : { *(.stab.index) }
265 } !! 123 .stab.indexstr 0 : { *(.stab.indexstr) }
266 !! 124 .comment 0 : { *(.comment) }
267 RUNTIME_CONST_VARIABLES <<
268 <<
269 PERCPU_SECTION(L1_CACHE_BYTES) <<
270 HYPERVISOR_PERCPU_SECTION <<
271 <<
272 HYPERVISOR_RELOC_SECTION <<
273 <<
274 .rela.dyn : ALIGN(8) { <<
275 __pi_rela_start = .; <<
276 *(.rela .rela*) <<
277 __pi_rela_end = .; <<
278 } <<
279 <<
280 .relr.dyn : ALIGN(8) { <<
281 __pi_relr_start = .; <<
282 *(.relr.dyn) <<
283 __pi_relr_end = .; <<
284 } <<
285 <<
286 . = ALIGN(SEGMENT_ALIGN); <<
287 __initdata_end = .; <<
288 __init_end = .; <<
289 <<
290 _data = .; <<
291 _sdata = .; <<
292 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THR <<
293 <<
294 /* <<
295 * Data written with the MMU off but r <<
296 * cache lines to be invalidated, disc <<
297 * Granule (CWG) of data from the cach <<
298 * requires this type of maintenance t <<
299 * Granule (CWG) area so the cache mai <<
300 * interfere with adjacent data. <<
301 */ <<
302 .mmuoff.data.write : ALIGN(SZ_2K) { <<
303 __mmuoff_data_start = .; <<
304 *(.mmuoff.data.write) <<
305 } <<
306 . = ALIGN(SZ_2K); <<
307 .mmuoff.data.read : { <<
308 *(.mmuoff.data.read) <<
309 __mmuoff_data_end = .; <<
310 } <<
311 <<
312 PECOFF_EDATA_PADDING <<
313 __pecoff_data_rawsize = ABSOLUTE(. - _ <<
314 _edata = .; <<
315 <<
316 /* start of zero-init region */ <<
317 BSS_SECTION(SBSS_ALIGN, 0, 0) <<
318 <<
319 . = ALIGN(PAGE_SIZE); <<
320 init_pg_dir = .; <<
321 . += INIT_DIR_SIZE; <<
322 init_pg_end = .; <<
323 /* end of zero-init region */ <<
324 <<
325 . += SZ_4K; /* stack for t <<
326 early_init_stack = .; <<
327 <<
328 . = ALIGN(SEGMENT_ALIGN); <<
329 __pecoff_data_size = ABSOLUTE(. - __in <<
330 _end = .; <<
331 <<
332 STABS_DEBUG <<
333 DWARF_DEBUG <<
334 ELF_DETAILS <<
335 <<
336 HEAD_SYMBOLS <<
337 <<
338 /* <<
339 * Sections that should stay zero size <<
340 * explicitly check instead of blindly <<
341 */ <<
342 .plt : { <<
343 *(.plt) *(.plt.*) *(.iplt) *(. <<
344 } <<
345 ASSERT(SIZEOF(.plt) == 0, "Unexpected <<
346 <<
347 .data.rel.ro : { *(.data.rel.ro) } <<
348 ASSERT(SIZEOF(.data.rel.ro) == 0, "Une <<
349 } 125 }
350 <<
351 #include "image-vars.h" <<
352 <<
353 /* <<
354 * The HYP init code and ID map text can't be <<
355 * former is page-aligned, but the latter may <<
356 * it should also not cross a page boundary. <<
357 */ <<
358 ASSERT(__hyp_idmap_text_end - __hyp_idmap_text <<
359 "HYP init code too big") <<
360 ASSERT(__idmap_text_end - (__idmap_text_start <<
361 "ID map text too big or misaligned") <<
362 #ifdef CONFIG_HIBERNATION <<
363 ASSERT(__hibernate_exit_text_end - __hibernate <<
364 "Hibernate exit text is bigger than 4 K <<
365 ASSERT(__hibernate_exit_text_start == swsusp_a <<
366 "Hibernate exit text does not start wit <<
367 #endif <<
368 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 <<
369 ASSERT((__entry_tramp_text_end - __entry_tramp <<
370 "Entry trampoline text too big") <<
371 #endif <<
372 #ifdef CONFIG_KVM <<
373 ASSERT(__hyp_bss_start == __bss_start, "HYP an <<
374 #endif <<
375 /* <<
376 * If padding is applied before .head.text, vi <<
377 */ <<
378 ASSERT(_text == KIMAGE_VADDR, "HEAD is misalig <<
379 <<
380 ASSERT(swapper_pg_dir - reserved_pg_dir == RES <<
381 "RESERVED_SWAPPER_OFFSET is wrong!") <<
382 <<
383 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 <<
384 ASSERT(swapper_pg_dir - tramp_pg_dir == TRAMP_ <<
385 "TRAMP_SWAPPER_OFFSET is wrong!") <<
386 #endif <<
387 <<
388 #ifdef CONFIG_KEXEC_CORE <<
389 /* kexec relocation code should fit into one K <<
390 ASSERT(__relocate_new_kernel_end - __relocate_ <<
391 "kexec relocation code is bigger than 4 <<
392 ASSERT(KEXEC_CONTROL_PAGE_SIZE >= SZ_4K, "KEXE <<
393 ASSERT(__relocate_new_kernel_start == arm64_re <<
394 "kexec control page does not start with <<
395 #endif <<
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