1 /* SPDX-License-Identifier: GPL-2.0 */ 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 * ld script to make SuperH Linux kernel !! 8 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
4 * Written by Niibe Yutaka and Paul Mundt !! 9 * ensure that it has .bss alignment (64K).
5 */ 10 */
6 OUTPUT_ARCH(sh) !! 11 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
>> 12
>> 13 /* Cavium Octeon should not have a separate PT_NOTE Program Header. */
>> 14 #ifndef CONFIG_CAVIUM_OCTEON_SOC
>> 15 #define EMITS_PT_NOTE
>> 16 #endif
>> 17
7 #define RUNTIME_DISCARD_EXIT 18 #define RUNTIME_DISCARD_EXIT
8 #include <asm/thread_info.h> <<
9 #include <asm/cache.h> <<
10 #include <asm/vmlinux.lds.h> <<
11 19
12 #ifdef CONFIG_PMB !! 20 #include <asm-generic/vmlinux.lds.h>
13 #define MEMORY_OFFSET 0 !! 21
>> 22 #undef mips
>> 23 #define mips mips
>> 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 }
>> 32
>> 33 #ifdef CONFIG_32BIT
>> 34 #ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 35 jiffies = jiffies_64;
>> 36 #else
>> 37 jiffies = jiffies_64 + 4;
>> 38 #endif
14 #else 39 #else
15 #define MEMORY_OFFSET __MEMORY_START !! 40 jiffies = jiffies_64;
16 #endif 41 #endif
17 42
18 ENTRY(_start) <<
19 SECTIONS 43 SECTIONS
20 { 44 {
21 . = PAGE_OFFSET + MEMORY_OFFSET + PHYS !! 45 #ifdef CONFIG_BOOT_ELF64
22 !! 46 /* Read-only sections, merged into text segment: */
23 _text = .; /* Text and re !! 47 /* . = 0xc000000000000000; */
24 !! 48
25 .empty_zero_page : AT(ADDR(.empty_zero !! 49 /* This is the value for an Origin kernel, taken from an IRIX kernel. */
26 *(.empty_zero_page) !! 50 /* . = 0xc00000000001c000; */
27 } = 0 !! 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 */
28 56
29 .text : AT(ADDR(.text)) { !! 57 /* . = 0xa800000000300000; */
30 HEAD_TEXT !! 58 . = 0xffffffff80300000;
>> 59 #endif
>> 60 . = LINKER_LOAD_ADDRESS;
>> 61 /* read-only */
>> 62 _text = .; /* Text and read-only data */
>> 63 .text : {
31 TEXT_TEXT 64 TEXT_TEXT
32 SCHED_TEXT 65 SCHED_TEXT
33 LOCK_TEXT 66 LOCK_TEXT
34 KPROBES_TEXT 67 KPROBES_TEXT
35 IRQENTRY_TEXT 68 IRQENTRY_TEXT
36 SOFTIRQENTRY_TEXT 69 SOFTIRQENTRY_TEXT
37 *(.fixup) 70 *(.fixup)
38 *(.gnu.warning) 71 *(.gnu.warning)
39 _etext = .; /* End !! 72 . = ALIGN(16);
40 } = 0x0009 !! 73 *(.got) /* Global offset table */
>> 74 } :text = 0
>> 75 _etext = .; /* End of text section */
41 76
42 EXCEPTION_TABLE(16) 77 EXCEPTION_TABLE(16)
43 78
44 _sdata = .; !! 79 /* Exception table for data bus errors */
45 RO_DATA(PAGE_SIZE) !! 80 __dbe_table : {
46 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THR !! 81 __start___dbe_table = .;
47 _edata = .; !! 82 KEEP(*(__dbe_table))
>> 83 __stop___dbe_table = .;
>> 84 }
>> 85
>> 86 _sdata = .; /* Start of data section */
>> 87 RO_DATA(4096)
48 88
49 DWARF_EH_FRAME !! 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)
>> 114 }
>> 115 _edata = .; /* End of data section */
50 116
>> 117 /* will be freed after init */
51 . = ALIGN(PAGE_SIZE); /* Ini 118 . = ALIGN(PAGE_SIZE); /* Init code and data */
52 __init_begin = .; 119 __init_begin = .;
53 INIT_TEXT_SECTION(PAGE_SIZE) 120 INIT_TEXT_SECTION(PAGE_SIZE)
54 INIT_DATA_SECTION(16) 121 INIT_DATA_SECTION(16)
55 122
56 . = ALIGN(4); 123 . = ALIGN(4);
57 .machvec.init : AT(ADDR(.machvec.init) !! 124 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
58 __machvec_start = .; !! 125 __mips_machines_start = .;
59 *(.machvec.init) !! 126 KEEP(*(.mips.machines.init))
60 __machvec_end = .; !! 127 __mips_machines_end = .;
61 } 128 }
62 129
63 PERCPU_SECTION(L1_CACHE_BYTES) !! 130 /* .exit.text is discarded at runtime, not link time, to deal with
>> 131 * references from .rodata
>> 132 */
>> 133 .exit.text : {
>> 134 EXIT_TEXT
>> 135 }
>> 136 .exit.data : {
>> 137 EXIT_DATA
>> 138 }
>> 139 #ifdef CONFIG_SMP
>> 140 PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 141 #endif
>> 142
>> 143 .rel.dyn : ALIGN(8) {
>> 144 *(.rel)
>> 145 *(.rel*)
>> 146 }
64 147
>> 148 #ifdef CONFIG_MIPS_ELF_APPENDED_DTB
>> 149 STRUCT_ALIGN();
>> 150 .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
>> 151 *(.appended_dtb)
>> 152 KEEP(*(.appended_dtb))
>> 153 }
>> 154 #endif
>> 155
>> 156 #ifdef CONFIG_RELOCATABLE
>> 157 . = ALIGN(4);
>> 158
>> 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
>> 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
65 /* 186 /*
66 * .exit.text is discarded at runtime, !! 187 * Align to 64K in attempt to eliminate holes before the
67 * references from __bug_table !! 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.
68 */ 191 */
69 .exit.text : AT(ADDR(.exit.text)) { EX !! 192 . = ALIGN(0x10000);
70 .exit.data : AT(ADDR(.exit.data)) { EX <<
71 <<
72 . = ALIGN(PAGE_SIZE); <<
73 __init_end = .; 193 __init_end = .;
74 BSS_SECTION(0, PAGE_SIZE, 4) !! 194 /* freed after init ends here */
>> 195
>> 196 /*
>> 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)
>> 201
75 _end = . ; 202 _end = . ;
76 203
>> 204 /* These mark the ABI of the kernel for debuggers. */
>> 205 .mdebug.abi32 : {
>> 206 KEEP(*(.mdebug.abi32))
>> 207 }
>> 208 .mdebug.abi64 : {
>> 209 KEEP(*(.mdebug.abi64))
>> 210 }
>> 211
>> 212 /* This is the MIPS specific mdebug section. */
>> 213 .mdebug : {
>> 214 *(.mdebug)
>> 215 }
>> 216
77 STABS_DEBUG 217 STABS_DEBUG
78 DWARF_DEBUG 218 DWARF_DEBUG
79 ELF_DETAILS 219 ELF_DETAILS
80 220
>> 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 */
81 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 }
82 } 242 }
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