1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* ld script to make s390 Linux kernel !! 2 #include <asm/asm-offsets.h>
3 * Written by Martin Schwidefsky (schwidefsky@ <<
4 */ <<
5 <<
6 #include <asm/thread_info.h> 3 #include <asm/thread_info.h>
7 #include <asm/page.h> !! 4
8 #include <asm/ftrace.lds.h> !! 5 #define PAGE_SIZE _PAGE_SIZE
9 6
10 /* 7 /*
11 * Put .bss..swapper_pg_dir as the first thing 8 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
12 * make sure it has 16k alignment. !! 9 * ensure that it has .bss alignment (64K).
13 */ 10 */
14 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_ !! 11 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
15 *(.bss..invalid_pg_ <<
16 <<
17 #define RO_EXCEPTION_TABLE_ALIGN 16 <<
18 12
19 /* Handle ro_after_init data on our own. */ !! 13 /* Cavium Octeon should not have a separate PT_NOTE Program Header. */
20 #define RO_AFTER_INIT_DATA !! 14 #ifndef CONFIG_CAVIUM_OCTEON_SOC
>> 15 #define EMITS_PT_NOTE
>> 16 #endif
21 17
22 #define RUNTIME_DISCARD_EXIT 18 #define RUNTIME_DISCARD_EXIT
23 19
24 #define EMITS_PT_NOTE <<
25 <<
26 #include <asm-generic/vmlinux.lds.h> 20 #include <asm-generic/vmlinux.lds.h>
27 #include <asm/vmlinux.lds.h> <<
28 <<
29 OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf <<
30 OUTPUT_ARCH(s390:64-bit) <<
31 ENTRY(startup_continue) <<
32 jiffies = jiffies_64; <<
33 21
>> 22 #undef mips
>> 23 #define mips mips
>> 24 OUTPUT_ARCH(mips)
>> 25 ENTRY(kernel_entry)
34 PHDRS { 26 PHDRS {
35 text PT_LOAD FLAGS(5); /* R_E */ !! 27 text PT_LOAD FLAGS(7); /* RWX */
36 data PT_LOAD FLAGS(7); /* RWE */ !! 28 #ifndef CONFIG_CAVIUM_OCTEON_SOC
37 note PT_NOTE FLAGS(0); /* ___ */ !! 29 note PT_NOTE FLAGS(4); /* R__ */
>> 30 #endif /* CAVIUM_OCTEON_SOC */
38 } 31 }
39 32
>> 33 #ifdef CONFIG_32BIT
>> 34 #ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 35 jiffies = jiffies_64;
>> 36 #else
>> 37 jiffies = jiffies_64 + 4;
>> 38 #endif
>> 39 #else
>> 40 jiffies = jiffies_64;
>> 41 #endif
>> 42
40 SECTIONS 43 SECTIONS
41 { 44 {
42 . = TEXT_OFFSET; !! 45 #ifdef CONFIG_BOOT_ELF64
>> 46 /* Read-only sections, merged into text segment: */
>> 47 /* . = 0xc000000000000000; */
>> 48
>> 49 /* This is the value for an Origin kernel, taken from an IRIX kernel. */
>> 50 /* . = 0xc00000000001c000; */
>> 51
>> 52 /* Set the vaddr for the text segment to a value
>> 53 * >= 0xa800 0000 0001 9000 if no symmon is going to configured
>> 54 * >= 0xa800 0000 0030 0000 otherwise
>> 55 */
>> 56
>> 57 /* . = 0xa800000000300000; */
>> 58 . = 0xffffffff80300000;
>> 59 #endif
>> 60 . = LINKER_LOAD_ADDRESS;
>> 61 /* read-only */
>> 62 _text = .; /* Text and read-only data */
43 .text : { 63 .text : {
44 _stext = .; /* Sta <<
45 _text = .; /* Tex <<
46 HEAD_TEXT <<
47 TEXT_TEXT 64 TEXT_TEXT
48 SCHED_TEXT 65 SCHED_TEXT
49 LOCK_TEXT 66 LOCK_TEXT
50 KPROBES_TEXT 67 KPROBES_TEXT
51 IRQENTRY_TEXT 68 IRQENTRY_TEXT
52 SOFTIRQENTRY_TEXT 69 SOFTIRQENTRY_TEXT
53 FTRACE_HOTPATCH_TRAMPOLINES_TE <<
54 *(.text.*_indirect_*) <<
55 *(.fixup) 70 *(.fixup)
56 *(.gnu.warning) 71 *(.gnu.warning)
57 . = ALIGN(PAGE_SIZE); !! 72 . = ALIGN(16);
58 _etext = .; /* End !! 73 *(.got) /* Global offset table */
59 } :text = 0x0700 !! 74 } :text = 0
60 !! 75 _etext = .; /* End of text section */
61 RO_DATA(PAGE_SIZE) !! 76
62 !! 77 EXCEPTION_TABLE(16)
63 . = ALIGN(PAGE_SIZE); !! 78
64 _sdata = .; /* Start of da !! 79 /* Exception table for data bus errors */
65 !! 80 __dbe_table : {
66 . = ALIGN(PAGE_SIZE); !! 81 __start___dbe_table = .;
67 __start_ro_after_init = .; !! 82 KEEP(*(__dbe_table))
68 .data..ro_after_init : { !! 83 __stop___dbe_table = .;
69 *(.data..ro_after_init) !! 84 }
70 JUMP_TABLE_DATA !! 85
71 } :data !! 86 _sdata = .; /* Start of data section */
72 . = ALIGN(PAGE_SIZE); !! 87 RO_DATA(4096)
73 __end_ro_after_init = .; !! 88
74 !! 89 /* writeable */
75 .data.rel.ro : { !! 90 .data : { /* Data */
76 *(.data.rel.ro .data.rel.ro.*) !! 91 . = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
77 } !! 92
78 .got : { !! 93 INIT_TASK_DATA(THREAD_SIZE)
79 __got_start = .; !! 94 NOSAVE_DATA
80 *(.got) !! 95 PAGE_ALIGNED_DATA(PAGE_SIZE)
81 __got_end = .; !! 96 CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
82 } !! 97 READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
83 !! 98 DATA_DATA
84 RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE) !! 99 CONSTRUCTORS
85 .data.rel : { !! 100 }
86 *(.data.rel*) !! 101 BUG_TABLE
>> 102 _gp = . + 0x8000;
>> 103 .lit8 : {
>> 104 *(.lit8)
>> 105 }
>> 106 .lit4 : {
>> 107 *(.lit4)
>> 108 }
>> 109 /* We want the small data sections together, so single-instruction offsets
>> 110 can access them all, and initialized data all before uninitialized, so
>> 111 we can shorten the on-disk segment size. */
>> 112 .sdata : {
>> 113 *(.sdata)
87 } 114 }
88 BOOT_DATA_PRESERVED !! 115 _edata = .; /* End of data section */
89 <<
90 . = ALIGN(8); <<
91 .amode31.refs : { <<
92 _start_amode31_refs = .; <<
93 *(.amode31.refs) <<
94 _end_amode31_refs = .; <<
95 } <<
96 <<
97 . = ALIGN(PAGE_SIZE); <<
98 _edata = .; /* End of data <<
99 116
100 /* will be freed after init */ 117 /* will be freed after init */
101 . = ALIGN(PAGE_SIZE); /* Init code a !! 118 . = ALIGN(PAGE_SIZE); /* Init code and data */
102 __init_begin = .; 119 __init_begin = .;
>> 120 INIT_TEXT_SECTION(PAGE_SIZE)
>> 121 INIT_DATA_SECTION(16)
103 122
104 . = ALIGN(PAGE_SIZE); !! 123 . = ALIGN(4);
105 .init.text : AT(ADDR(.init.text) - LOA !! 124 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
106 _sinittext = .; !! 125 __mips_machines_start = .;
107 INIT_TEXT !! 126 KEEP(*(.mips.machines.init))
108 . = ALIGN(PAGE_SIZE); !! 127 __mips_machines_end = .;
109 _einittext = .; <<
110 } 128 }
111 129
112 /* !! 130 /* .exit.text is discarded at runtime, not link time, to deal with
113 * .exit.text is discarded at runtime, !! 131 * references from .rodata
114 * to deal with references from __bug_ !! 132 */
115 */ <<
116 .exit.text : { 133 .exit.text : {
117 EXIT_TEXT 134 EXIT_TEXT
118 } 135 }
119 <<
120 .exit.data : { 136 .exit.data : {
121 EXIT_DATA 137 EXIT_DATA
122 } 138 }
>> 139 #ifdef CONFIG_SMP
>> 140 PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 141 #endif
123 142
124 /* !! 143 .rel.dyn : ALIGN(8) {
125 * struct alt_inst entries. From the h !! 144 *(.rel)
126 * "Alternative instructions for diffe !! 145 *(.rel*)
127 * Think locking instructions on spinl <<
128 * Note, that it is a part of __init r <<
129 */ <<
130 . = ALIGN(8); <<
131 .altinstructions : { <<
132 __alt_instructions = .; <<
133 *(.altinstructions) <<
134 __alt_instructions_end = .; <<
135 } 146 }
136 147
137 /* !! 148 #ifdef CONFIG_MIPS_ELF_APPENDED_DTB
138 * And here are the replacement instru !! 149 STRUCT_ALIGN();
139 * them as binary blobs. The .altinstr !! 150 .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
140 * get the address and the length of t !! 151 *(.appended_dtb)
141 * Note, that it is a part of __init r !! 152 KEEP(*(.appended_dtb))
142 */ <<
143 .altinstr_replacement : { <<
144 *(.altinstr_replacement) <<
145 } 153 }
>> 154 #endif
146 155
147 /* !! 156 #ifdef CONFIG_RELOCATABLE
148 * Table with the patch locations to u <<
149 */ <<
150 . = ALIGN(4); 157 . = ALIGN(4);
151 .nospec_call_table : { <<
152 __nospec_call_start = . ; <<
153 *(.s390_indirect*) <<
154 __nospec_call_end = . ; <<
155 } <<
156 .nospec_return_table : { <<
157 __nospec_return_start = . ; <<
158 *(.s390_return*) <<
159 __nospec_return_end = . ; <<
160 } <<
161 158
162 BOOT_DATA !! 159 .data.reloc : {
>> 160 _relocation_start = .;
>> 161 /*
>> 162 * Space for relocation table
>> 163 * This needs to be filled so that the
>> 164 * relocs tool can overwrite the content.
>> 165 * An invalid value is left at the start of the
>> 166 * section to abort relocation if the table
>> 167 * has not been filled in.
>> 168 */
>> 169 LONG(0xFFFFFFFF);
>> 170 FILL(0);
>> 171 . += CONFIG_RELOCATION_TABLE_SIZE - 4;
>> 172 _relocation_end = .;
>> 173 }
>> 174 #endif
163 175
>> 176 #ifdef CONFIG_MIPS_RAW_APPENDED_DTB
>> 177 .fill : {
>> 178 FILL(0);
>> 179 BYTE(0);
>> 180 STRUCT_ALIGN();
>> 181 }
>> 182 __appended_dtb = .;
>> 183 /* leave space for appended DTB */
>> 184 . += 0x100000;
>> 185 #endif
164 /* 186 /*
165 * .amode31 section for code, data, ex !! 187 * Align to 64K in attempt to eliminate holes before the
166 * below 2 GB, even when the kernel is !! 188 * .bss..swapper_pg_dir section at the start of .bss. This
167 */ !! 189 * also satisfies PAGE_SIZE alignment as the largest page size
168 . = ALIGN(PAGE_SIZE); !! 190 * allowed is 64K.
169 _samode31 = .; !! 191 */
170 .amode31.text : { !! 192 . = ALIGN(0x10000);
171 _stext_amode31 = .; !! 193 __init_end = .;
172 *(.amode31.text) !! 194 /* freed after init ends here */
173 *(.amode31.text.*_indirect_*) <<
174 . = ALIGN(PAGE_SIZE); <<
175 _etext_amode31 = .; <<
176 } <<
177 . = ALIGN(16); <<
178 .amode31.ex_table : { <<
179 _start_amode31_ex_table = .; <<
180 KEEP(*(.amode31.ex_table)) <<
181 _stop_amode31_ex_table = .; <<
182 } <<
183 . = ALIGN(PAGE_SIZE); <<
184 .amode31.data : { <<
185 *(.amode31.data) <<
186 } <<
187 . = _samode31 + AMODE31_SIZE; <<
188 _eamode31 = .; <<
189 <<
190 /* early.c uses stsi, which requires p <<
191 . = ALIGN(PAGE_SIZE); <<
192 INIT_DATA_SECTION(0x100) <<
193 <<
194 RUNTIME_CONST_VARIABLES <<
195 195
196 PERCPU_SECTION(0x100) !! 196 /*
197 !! 197 * Force .bss to 64K alignment so that .bss..swapper_pg_dir
198 . = ALIGN(PAGE_SIZE); !! 198 * gets that alignment. .sbss should be empty, so there will be
199 __init_end = .; /* freed after !! 199 * no holes after __init_end. */
200 !! 200 BSS_SECTION(0, 0x10000, 8)
201 BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, <<
202 201
203 . = ALIGN(PAGE_SIZE); <<
204 _end = . ; 202 _end = . ;
205 203
206 /* !! 204 /* These mark the ABI of the kernel for debuggers. */
207 * uncompressed image info used by the !! 205 .mdebug.abi32 : {
208 * it should match struct vmlinux_info !! 206 KEEP(*(.mdebug.abi32))
209 */ !! 207 }
210 .vmlinux.info 0 (INFO) : { !! 208 .mdebug.abi64 : {
211 QUAD(startup_continue) !! 209 KEEP(*(.mdebug.abi64))
212 QUAD(__bss_start - _stext) !! 210 }
213 QUAD(__bss_stop - __bss_start) !! 211
214 QUAD(__boot_data_start) !! 212 /* This is the MIPS specific mdebug section. */
215 QUAD(__boot_data_end - __boot_ !! 213 .mdebug : {
216 QUAD(__boot_data_preserved_sta !! 214 *(.mdebug)
217 QUAD(__boot_data_preserved_end !! 215 }
218 __boot_data_preserved_sta <<
219 QUAD(__got_start) <<
220 QUAD(__got_end) <<
221 QUAD(_eamode31 - _samode31) <<
222 QUAD(init_mm) <<
223 QUAD(swapper_pg_dir) <<
224 QUAD(invalid_pg_dir) <<
225 QUAD(__alt_instructions) <<
226 QUAD(__alt_instructions_end) <<
227 #ifdef CONFIG_KASAN <<
228 QUAD(kasan_early_shadow_page) <<
229 QUAD(kasan_early_shadow_pte) <<
230 QUAD(kasan_early_shadow_pmd) <<
231 QUAD(kasan_early_shadow_pud) <<
232 QUAD(kasan_early_shadow_p4d) <<
233 #endif <<
234 } :NONE <<
235 216
236 /* Debugging sections. */ <<
237 STABS_DEBUG 217 STABS_DEBUG
238 DWARF_DEBUG 218 DWARF_DEBUG
239 ELF_DETAILS 219 ELF_DETAILS
240 220
241 /* !! 221 /* These must appear regardless of . */
242 * Make sure that the .got.plt is eith !! 222 .gptab.sdata : {
243 * contains only the three reserved do !! 223 *(.gptab.data)
244 */ !! 224 *(.gptab.sdata)
245 .got.plt : { !! 225 }
246 *(.got.plt) !! 226 .gptab.sbss : {
247 } !! 227 *(.gptab.bss)
248 ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF !! 228 *(.gptab.sbss)
249 <<
250 /* <<
251 * Sections that should stay zero size <<
252 * explicitly check instead of blindly <<
253 */ <<
254 .plt : { <<
255 *(.plt) *(.plt.*) *(.iplt) *(. <<
256 } <<
257 ASSERT(SIZEOF(.plt) == 0, "Unexpected <<
258 .rela.dyn : { <<
259 *(.rela.*) *(.rela_*) <<
260 } 229 }
261 ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpe <<
262 230
263 /* Sections to be discarded */ 231 /* Sections to be discarded */
264 DISCARDS 232 DISCARDS
265 /DISCARD/ : { 233 /DISCARD/ : {
266 *(.eh_frame) !! 234 /* ABI crap starts here */
267 *(.interp) !! 235 *(.MIPS.abiflags)
>> 236 *(.MIPS.options)
>> 237 *(.gnu.attributes)
>> 238 *(.options)
>> 239 *(.pdr)
>> 240 *(.reginfo)
268 } 241 }
269 } 242 }
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