1 /* SPDX-License-Identifier: GPL-2.0 */ !! 1 /* ld script for sparc32/sparc64 kernel */
2 /* <<
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 */ <<
7 <<
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 2
63 #include <asm-generic/vmlinux.lds.h> 3 #include <asm-generic/vmlinux.lds.h>
64 #include <asm/cache.h> <<
65 #include <asm/kernel-pgtable.h> <<
66 #include <asm/kexec.h> <<
67 #include <asm/memory.h> <<
68 #include <asm/page.h> <<
69 4
70 #include "image.h" !! 5 #include <asm/page.h>
>> 6 #include <asm/thread_info.h>
71 7
72 OUTPUT_ARCH(aarch64) !! 8 #ifdef CONFIG_SPARC32
73 ENTRY(_text) !! 9 #define INITIAL_ADDRESS 0x10000 + SIZEOF_HEADERS
>> 10 #define TEXTSTART 0xf0004000
74 11
75 jiffies = jiffies_64; !! 12 #define SMP_CACHE_BYTES_SHIFT 5
76 13
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 14 #else
101 #define HIBERNATE_TEXT !! 15 #define SMP_CACHE_BYTES_SHIFT 6
102 #endif !! 16 #define INITIAL_ADDRESS 0x4000
>> 17 #define TEXTSTART 0x0000000000404000
103 18
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 19 #endif
113 20
114 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 !! 21 #define SMP_CACHE_BYTES (1 << SMP_CACHE_BYTES_SHIFT)
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 22
126 #ifdef CONFIG_UNWIND_TABLES !! 23 #ifdef CONFIG_SPARC32
127 #define UNWIND_DATA_SECTIONS !! 24 OUTPUT_FORMAT("elf32-sparc", "elf32-sparc", "elf32-sparc")
128 .eh_frame : { !! 25 OUTPUT_ARCH(sparc)
129 __pi___eh_frame_start = .; !! 26 ENTRY(_start)
130 *(.eh_frame) !! 27 jiffies = jiffies_64 + 4;
131 __pi___eh_frame_end = .; <<
132 } <<
133 #else 28 #else
134 #define UNWIND_DATA_SECTIONS !! 29 /* sparc64 */
135 #endif !! 30 OUTPUT_FORMAT("elf64-sparc", "elf64-sparc", "elf64-sparc")
136 !! 31 OUTPUT_ARCH(sparc:v9a)
137 /* !! 32 ENTRY(_start)
138 * The size of the PE/COFF section that covers !! 33 jiffies = jiffies_64;
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 34 #endif
152 35
153 SECTIONS 36 SECTIONS
154 { 37 {
155 /* !! 38 /* swapper_low_pmd_dir is sparc64 only */
156 * XXX: The linker does not define how !! 39 swapper_low_pmd_dir = 0x0000000000402000;
157 * assigned to input sections when the !! 40 . = INITIAL_ADDRESS;
158 * matching the same input section nam !! 41 .text TEXTSTART :
159 * order of matching. !! 42 {
160 */ <<
161 DISCARDS <<
162 /DISCARD/ : { <<
163 *(.interp .dynamic) <<
164 *(.dynsym .dynstr .hash .gnu.h <<
165 } <<
166 <<
167 . = KIMAGE_VADDR; <<
168 <<
169 .head.text : { <<
170 _text = .; 43 _text = .;
171 HEAD_TEXT 44 HEAD_TEXT
172 } !! 45 TEXT_TEXT
173 .text : ALIGN(SEGMENT_ALIGN) { /* Rea !! 46 SCHED_TEXT
174 _stext = .; /* Tex !! 47 LOCK_TEXT
175 IRQENTRY_TEXT !! 48 KPROBES_TEXT
176 SOFTIRQENTRY_TEXT !! 49 *(.gnu.warning)
177 ENTRY_TEXT !! 50 } = 0
178 TEXT_TEXT !! 51 _etext = .;
179 SCHED_TEXT <<
180 LOCK_TEXT <<
181 KPROBES_TEXT <<
182 HYPERVISOR_TEXT <<
183 *(.gnu.warning) <<
184 } <<
185 52
186 . = ALIGN(SEGMENT_ALIGN); <<
187 _etext = .; /* End <<
188 <<
189 /* everything from this point to __ini <<
190 RO_DATA(PAGE_SIZE) 53 RO_DATA(PAGE_SIZE)
191 !! 54 .data1 : {
192 HYPERVISOR_DATA_SECTIONS !! 55 *(.data1)
193 <<
194 .got : { *(.got) } <<
195 /* <<
196 * Make sure that the .got.plt is eith <<
197 * contains only the lazy dispatch ent <<
198 */ <<
199 .got.plt : { *(.got.plt) } <<
200 ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF <<
201 "Unexpected GOT/PLT entries det <<
202 <<
203 /* code sections that are never execut <<
204 .rodata.text : { <<
205 TRAMP_TEXT <<
206 HIBERNATE_TEXT <<
207 KEXEC_TEXT <<
208 IDMAP_TEXT <<
209 . = ALIGN(PAGE_SIZE); <<
210 } 56 }
>> 57 RW_DATA_SECTION(SMP_CACHE_BYTES, 0, THREAD_SIZE)
211 58
212 idmap_pg_dir = .; !! 59 /* End of data section */
213 . += PAGE_SIZE; !! 60 _edata = .;
214 <<
215 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 <<
216 tramp_pg_dir = .; <<
217 . += PAGE_SIZE; <<
218 #endif <<
219 <<
220 reserved_pg_dir = .; <<
221 . += PAGE_SIZE; <<
222 <<
223 swapper_pg_dir = .; <<
224 . += PAGE_SIZE; <<
225 <<
226 . = ALIGN(SEGMENT_ALIGN); <<
227 __init_begin = .; <<
228 __inittext_begin = .; <<
229 <<
230 INIT_TEXT_SECTION(8) <<
231 <<
232 __exittext_begin = .; <<
233 .exit.text : { <<
234 EXIT_TEXT <<
235 } <<
236 __exittext_end = .; <<
237 61
238 . = ALIGN(4); !! 62 .fixup : {
239 .altinstructions : { !! 63 __start___fixup = .;
240 __alt_instructions = .; !! 64 *(.fixup)
241 *(.altinstructions) !! 65 __stop___fixup = .;
242 __alt_instructions_end = .; <<
243 } 66 }
>> 67 EXCEPTION_TABLE(16)
>> 68 NOTES
244 69
245 UNWIND_DATA_SECTIONS !! 70 . = ALIGN(PAGE_SIZE);
>> 71 __init_begin = ALIGN(PAGE_SIZE);
>> 72 INIT_TEXT_SECTION(PAGE_SIZE)
>> 73 __init_text_end = .;
>> 74 INIT_DATA_SECTION(16)
246 75
247 . = ALIGN(SEGMENT_ALIGN); !! 76 . = ALIGN(4);
248 __inittext_end = .; !! 77 .tsb_ldquad_phys_patch : {
249 __initdata_begin = .; !! 78 __tsb_ldquad_phys_patch = .;
250 !! 79 *(.tsb_ldquad_phys_patch)
251 init_idmap_pg_dir = .; !! 80 __tsb_ldquad_phys_patch_end = .;
252 . += INIT_IDMAP_DIR_SIZE; <<
253 init_idmap_pg_end = .; <<
254 <<
255 .init.data : { <<
256 INIT_DATA <<
257 INIT_SETUP(16) <<
258 INIT_CALLS <<
259 CON_INITCALL <<
260 INIT_RAM_FS <<
261 *(.init.altinstructions .init. <<
262 } <<
263 .exit.data : { <<
264 EXIT_DATA <<
265 } 81 }
266 82
267 RUNTIME_CONST_VARIABLES !! 83 .tsb_phys_patch : {
268 !! 84 __tsb_phys_patch = .;
269 PERCPU_SECTION(L1_CACHE_BYTES) !! 85 *(.tsb_phys_patch)
270 HYPERVISOR_PERCPU_SECTION !! 86 __tsb_phys_patch_end = .;
271 <<
272 HYPERVISOR_RELOC_SECTION <<
273 <<
274 .rela.dyn : ALIGN(8) { <<
275 __pi_rela_start = .; <<
276 *(.rela .rela*) <<
277 __pi_rela_end = .; <<
278 } 87 }
279 88
280 .relr.dyn : ALIGN(8) { !! 89 .cpuid_patch : {
281 __pi_relr_start = .; !! 90 __cpuid_patch = .;
282 *(.relr.dyn) !! 91 *(.cpuid_patch)
283 __pi_relr_end = .; !! 92 __cpuid_patch_end = .;
284 } 93 }
285 94
286 . = ALIGN(SEGMENT_ALIGN); !! 95 .sun4v_1insn_patch : {
287 __initdata_end = .; !! 96 __sun4v_1insn_patch = .;
288 __init_end = .; !! 97 *(.sun4v_1insn_patch)
289 !! 98 __sun4v_1insn_patch_end = .;
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 } 99 }
306 . = ALIGN(SZ_2K); !! 100 .sun4v_2insn_patch : {
307 .mmuoff.data.read : { !! 101 __sun4v_2insn_patch = .;
308 *(.mmuoff.data.read) !! 102 *(.sun4v_2insn_patch)
309 __mmuoff_data_end = .; !! 103 __sun4v_2insn_patch_end = .;
310 } 104 }
311 105
312 PECOFF_EDATA_PADDING !! 106 PERCPU(PAGE_SIZE)
313 __pecoff_data_rawsize = ABSOLUTE(. - _ <<
314 _edata = .; <<
315 <<
316 /* start of zero-init region */ <<
317 BSS_SECTION(SBSS_ALIGN, 0, 0) <<
318 107
319 . = ALIGN(PAGE_SIZE); 108 . = ALIGN(PAGE_SIZE);
320 init_pg_dir = .; !! 109 __init_end = .;
321 . += INIT_DIR_SIZE; !! 110 BSS_SECTION(0, 0, 0)
322 init_pg_end = .; !! 111 _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 = .; <<
331 112
332 STABS_DEBUG 113 STABS_DEBUG
333 DWARF_DEBUG 114 DWARF_DEBUG
334 ELF_DETAILS <<
335 <<
336 HEAD_SYMBOLS <<
337 115
338 /* !! 116 DISCARDS
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 } 117 }
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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