1 /* SPDX-License-Identifier: GPL-2.0-only */ !! 1 /* SPDX-License-Identifier: GPL-2.0 */
>> 2 #include <asm/asm-offsets.h>
>> 3 #include <asm/thread_info.h>
>> 4
>> 5 #define PAGE_SIZE _PAGE_SIZE
>> 6
2 /* 7 /*
3 * Copyright (C) 2012 Regents of the Universit !! 8 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
4 * Copyright (C) 2017 SiFive !! 9 * ensure that it has .bss alignment (64K).
5 */ 10 */
>> 11 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
6 12
7 #define RO_EXCEPTION_TABLE_ALIGN 4 !! 13 /* Cavium Octeon should not have a separate PT_NOTE Program Header. */
8 #define RUNTIME_DISCARD_EXIT !! 14 #ifndef CONFIG_CAVIUM_OCTEON_SOC
9 !! 15 #define EMITS_PT_NOTE
10 #ifdef CONFIG_XIP_KERNEL !! 16 #endif
11 #include "vmlinux-xip.lds.S" <<
12 #else <<
13 17
14 #include <asm/pgtable.h> !! 18 #define RUNTIME_DISCARD_EXIT
15 #define LOAD_OFFSET KERNEL_LINK_ADDR <<
16 19
17 #include <asm/vmlinux.lds.h> !! 20 #include <asm-generic/vmlinux.lds.h>
18 #include <asm/page.h> <<
19 #include <asm/cache.h> <<
20 #include <asm/thread_info.h> <<
21 #include <asm/set_memory.h> <<
22 #include "image-vars.h" <<
23 21
24 #include <linux/sizes.h> !! 22 #undef mips
25 OUTPUT_ARCH(riscv) !! 23 #define mips mips
26 ENTRY(_start) !! 24 OUTPUT_ARCH(mips)
>> 25 ENTRY(kernel_entry)
>> 26 PHDRS {
>> 27 text PT_LOAD FLAGS(7); /* RWX */
>> 28 #ifndef CONFIG_CAVIUM_OCTEON_SOC
>> 29 note PT_NOTE FLAGS(4); /* R__ */
>> 30 #endif /* CAVIUM_OCTEON_SOC */
>> 31 }
27 32
28 jiffies = jiffies_64; !! 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
29 42
30 SECTIONS 43 SECTIONS
31 { 44 {
32 /* Beginning of code and text segment !! 45 #ifdef CONFIG_BOOT_ELF64
33 . = LOAD_OFFSET; !! 46 /* Read-only sections, merged into text segment: */
34 _start = .; !! 47 /* . = 0xc000000000000000; */
35 HEAD_TEXT_SECTION !! 48
36 . = ALIGN(PAGE_SIZE); !! 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 */
37 56
>> 57 /* . = 0xa800000000300000; */
>> 58 . = 0xffffffff80300000;
>> 59 #endif
>> 60 . = LINKER_LOAD_ADDRESS;
>> 61 /* read-only */
>> 62 _text = .; /* Text and read-only data */
38 .text : { 63 .text : {
39 _text = .; <<
40 _stext = .; <<
41 TEXT_TEXT 64 TEXT_TEXT
42 SCHED_TEXT 65 SCHED_TEXT
43 LOCK_TEXT 66 LOCK_TEXT
44 KPROBES_TEXT 67 KPROBES_TEXT
45 ENTRY_TEXT <<
46 IRQENTRY_TEXT 68 IRQENTRY_TEXT
47 SOFTIRQENTRY_TEXT 69 SOFTIRQENTRY_TEXT
48 _etext = .; !! 70 *(.fixup)
>> 71 *(.gnu.warning)
>> 72 . = ALIGN(16);
>> 73 *(.got) /* Global offset table */
>> 74 } :text = 0
>> 75 _etext = .; /* End of text section */
>> 76
>> 77 EXCEPTION_TABLE(16)
>> 78
>> 79 /* Exception table for data bus errors */
>> 80 __dbe_table : {
>> 81 __start___dbe_table = .;
>> 82 KEEP(*(__dbe_table))
>> 83 __stop___dbe_table = .;
>> 84 }
>> 85
>> 86 _sdata = .; /* Start of data section */
>> 87 RO_DATA(4096)
>> 88
>> 89 /* writeable */
>> 90 .data : { /* Data */
>> 91 . = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
>> 92
>> 93 INIT_TASK_DATA(THREAD_SIZE)
>> 94 NOSAVE_DATA
>> 95 PAGE_ALIGNED_DATA(PAGE_SIZE)
>> 96 CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 97 READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 98 DATA_DATA
>> 99 CONSTRUCTORS
>> 100 }
>> 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)
49 } 114 }
>> 115 _edata = .; /* End of data section */
50 116
51 . = ALIGN(SECTION_ALIGN); !! 117 /* will be freed after init */
>> 118 . = ALIGN(PAGE_SIZE); /* Init code and data */
52 __init_begin = .; 119 __init_begin = .;
53 __init_text_begin = .; !! 120 INIT_TEXT_SECTION(PAGE_SIZE)
54 .init.text : AT(ADDR(.init.text) - LOA <<
55 _sinittext = .; <<
56 INIT_TEXT <<
57 _einittext = .; <<
58 } <<
59 <<
60 . = ALIGN(8); <<
61 __soc_early_init_table : { <<
62 __soc_early_init_table_start = <<
63 KEEP(*(__soc_early_init_table) <<
64 __soc_early_init_table_end = . <<
65 } <<
66 __soc_builtin_dtb_table : { <<
67 __soc_builtin_dtb_table_start <<
68 KEEP(*(__soc_builtin_dtb_table <<
69 __soc_builtin_dtb_table_end = <<
70 } <<
71 /* we have to discard exit text and su <<
72 __exittext_begin = .; <<
73 .exit.text : <<
74 { <<
75 EXIT_TEXT <<
76 } <<
77 __exittext_end = .; <<
78 <<
79 __init_text_end = .; <<
80 . = ALIGN(SECTION_ALIGN); <<
81 #ifdef CONFIG_EFI <<
82 . = ALIGN(PECOFF_SECTION_ALIGNMENT); <<
83 __pecoff_text_end = .; <<
84 #endif <<
85 /* Start of init data section */ <<
86 __init_data_begin = .; <<
87 INIT_DATA_SECTION(16) 121 INIT_DATA_SECTION(16)
88 122
89 .init.pi : { !! 123 . = ALIGN(4);
90 KEEP(*(.init.pi*)) !! 124 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
>> 125 __mips_machines_start = .;
>> 126 KEEP(*(.mips.machines.init))
>> 127 __mips_machines_end = .;
91 } 128 }
92 129
93 .init.bss : { !! 130 /* .exit.text is discarded at runtime, not link time, to deal with
94 KEEP(*(.init.bss*)) /* fro !! 131 * references from .rodata
>> 132 */
>> 133 .exit.text : {
>> 134 EXIT_TEXT
95 } 135 }
96 .exit.data : !! 136 .exit.data : {
97 { <<
98 EXIT_DATA 137 EXIT_DATA
99 } 138 }
100 PERCPU_SECTION(L1_CACHE_BYTES) !! 139 #ifdef CONFIG_SMP
101 !! 140 PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
102 .rel.dyn : { !! 141 #endif
103 *(.rel.dyn*) <<
104 } <<
105 <<
106 .rela.dyn : ALIGN(8) { <<
107 __rela_dyn_start = .; <<
108 *(.rela .rela*) <<
109 __rela_dyn_end = .; <<
110 } <<
111 <<
112 __init_data_end = .; <<
113 142
114 . = ALIGN(8); !! 143 .rel.dyn : ALIGN(8) {
115 .alternative : { !! 144 *(.rel)
116 __alt_start = .; !! 145 *(.rel*)
117 KEEP(*(.alternative)) <<
118 __alt_end = .; <<
119 } 146 }
120 __init_end = .; <<
121 147
122 /* Start of data section */ !! 148 #ifdef CONFIG_MIPS_ELF_APPENDED_DTB
123 _sdata = .; !! 149 STRUCT_ALIGN();
124 RO_DATA(SECTION_ALIGN) !! 150 .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
125 .srodata : { !! 151 *(.appended_dtb)
126 *(.srodata*) !! 152 KEEP(*(.appended_dtb))
127 } 153 }
>> 154 #endif
128 155
129 . = ALIGN(SECTION_ALIGN); !! 156 #ifdef CONFIG_RELOCATABLE
130 _data = .; !! 157 . = ALIGN(4);
131 158
132 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THR !! 159 .data.reloc : {
133 .sdata : { !! 160 _relocation_start = .;
134 __global_pointer$ = . + 0x800; !! 161 /*
135 *(.sdata*) !! 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 = .;
136 } 173 }
137 <<
138 .got : { *(.got*) } <<
139 <<
140 #ifdef CONFIG_RELOCATABLE <<
141 .data.rel : { *(.data.rel*) } <<
142 .plt : { *(.plt) } <<
143 .dynamic : { *(.dynamic) } <<
144 .dynsym : { *(.dynsym) } <<
145 .dynstr : { *(.dynstr) } <<
146 .hash : { *(.hash) } <<
147 .gnu.hash : { *(.gnu.hash) } <<
148 #endif 174 #endif
149 175
150 #ifdef CONFIG_EFI !! 176 #ifdef CONFIG_MIPS_RAW_APPENDED_DTB
151 .pecoff_edata_padding : { BYTE(0); . = !! 177 .fill : {
152 __pecoff_data_raw_size = ABSOLUTE(. - !! 178 FILL(0);
153 __pecoff_data_raw_end = ABSOLUTE(.); !! 179 BYTE(0);
>> 180 STRUCT_ALIGN();
>> 181 }
>> 182 __appended_dtb = .;
>> 183 /* leave space for appended DTB */
>> 184 . += 0x100000;
154 #endif 185 #endif
>> 186 /*
>> 187 * Align to 64K in attempt to eliminate holes before the
>> 188 * .bss..swapper_pg_dir section at the start of .bss. This
>> 189 * also satisfies PAGE_SIZE alignment as the largest page size
>> 190 * allowed is 64K.
>> 191 */
>> 192 . = ALIGN(0x10000);
>> 193 __init_end = .;
>> 194 /* freed after init ends here */
155 195
156 /* End of data section */ !! 196 /*
157 _edata = .; !! 197 * Force .bss to 64K alignment so that .bss..swapper_pg_dir
>> 198 * gets that alignment. .sbss should be empty, so there will be
>> 199 * no holes after __init_end. */
>> 200 BSS_SECTION(0, 0x10000, 8)
158 201
159 BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0) !! 202 _end = . ;
160 203
161 #ifdef CONFIG_EFI !! 204 /* These mark the ABI of the kernel for debuggers. */
162 . = ALIGN(PECOFF_SECTION_ALIGNMENT); !! 205 .mdebug.abi32 : {
163 __pecoff_data_virt_size = ABSOLUTE(. - !! 206 KEEP(*(.mdebug.abi32))
164 __pecoff_data_virt_end = ABSOLUTE(.); !! 207 }
165 #endif !! 208 .mdebug.abi64 : {
166 _end = .; !! 209 KEEP(*(.mdebug.abi64))
>> 210 }
>> 211
>> 212 /* This is the MIPS specific mdebug section. */
>> 213 .mdebug : {
>> 214 *(.mdebug)
>> 215 }
167 216
168 STABS_DEBUG 217 STABS_DEBUG
169 DWARF_DEBUG 218 DWARF_DEBUG
170 ELF_DETAILS 219 ELF_DETAILS
171 .riscv.attributes 0 : { *(.riscv.attri <<
172 220
>> 221 /* These must appear regardless of . */
>> 222 .gptab.sdata : {
>> 223 *(.gptab.data)
>> 224 *(.gptab.sdata)
>> 225 }
>> 226 .gptab.sbss : {
>> 227 *(.gptab.bss)
>> 228 *(.gptab.sbss)
>> 229 }
>> 230
>> 231 /* Sections to be discarded */
173 DISCARDS 232 DISCARDS
>> 233 /DISCARD/ : {
>> 234 /* ABI crap starts here */
>> 235 *(.MIPS.abiflags)
>> 236 *(.MIPS.options)
>> 237 *(.gnu.attributes)
>> 238 *(.options)
>> 239 *(.pdr)
>> 240 *(.reginfo)
>> 241 }
174 } 242 }
175 #endif /* CONFIG_XIP_KERNEL */ <<
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