1 /* SPDX-License-Identifier: GPL-2.0-only */ !! 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* !! 2 #include <asm/asm-offsets.h>
3 * Linker script for Hexagon kernel !! 3 #include <asm/thread_info.h>
4 * <<
5 * Copyright (c) 2010-2014, The Linux Foundati <<
6 */ <<
7 4
8 #include <asm-generic/vmlinux.lds.h> !! 5 #define PAGE_SIZE _PAGE_SIZE
9 #include <asm/asm-offsets.h> /* Most of th <<
10 #include <asm/mem-layout.h> /* except for <<
11 #include <asm/cache.h> /* and now we <<
12 #include <asm/thread_info.h> /* and we nee <<
13 6
14 OUTPUT_ARCH(hexagon) !! 7 /*
15 ENTRY(stext) !! 8 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
>> 9 * ensure that it has .bss alignment (64K).
>> 10 */
>> 11 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
16 12
17 jiffies = jiffies_64; !! 13 #define RUNTIME_DISCARD_EXIT
18 14
19 /* !! 15 #include <asm-generic/vmlinux.lds.h>
20 See asm-generic/vmlinux.lds.h for expansion of <<
21 See asm-generic/sections.h for seemingly requi <<
22 */ <<
23 16
24 #define PAGE_SIZE _PAGE_SIZE !! 17 #undef mips
>> 18 #define mips mips
>> 19 OUTPUT_ARCH(mips)
>> 20 ENTRY(kernel_entry)
>> 21 PHDRS {
>> 22 text PT_LOAD FLAGS(7); /* RWX */
>> 23 #ifndef CONFIG_CAVIUM_OCTEON_SOC
>> 24 note PT_NOTE FLAGS(4); /* R__ */
>> 25 #endif /* CAVIUM_OCTEON_SOC */
>> 26 }
>> 27
>> 28 #ifdef CONFIG_32BIT
>> 29 #ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 30 jiffies = jiffies_64;
>> 31 #else
>> 32 jiffies = jiffies_64 + 4;
>> 33 #endif
>> 34 #else
>> 35 jiffies = jiffies_64;
>> 36 #endif
25 37
26 SECTIONS 38 SECTIONS
27 { 39 {
28 . = PAGE_OFFSET; !! 40 #ifdef CONFIG_BOOT_ELF64
29 !! 41 /* Read-only sections, merged into text segment: */
30 __init_begin = .; !! 42 /* . = 0xc000000000000000; */
31 HEAD_TEXT_SECTION !! 43
32 INIT_TEXT_SECTION(PAGE_SIZE) !! 44 /* This is the value for an Origin kernel, taken from an IRIX kernel. */
33 PERCPU_SECTION(L1_CACHE_BYTES) !! 45 /* . = 0xc00000000001c000; */
34 __init_end = .; !! 46
35 !! 47 /* Set the vaddr for the text segment to a value
36 . = ALIGN(_PAGE_SIZE); !! 48 * >= 0xa800 0000 0001 9000 if no symmon is going to configured
37 _stext = .; !! 49 * >= 0xa800 0000 0030 0000 otherwise
38 .text : AT(ADDR(.text)) { !! 50 */
39 _text = .; !! 51
>> 52 /* . = 0xa800000000300000; */
>> 53 . = 0xffffffff80300000;
>> 54 #endif
>> 55 . = LINKER_LOAD_ADDRESS;
>> 56 /* read-only */
>> 57 _text = .; /* Text and read-only data */
>> 58 .text : {
40 TEXT_TEXT 59 TEXT_TEXT
41 IRQENTRY_TEXT <<
42 SOFTIRQENTRY_TEXT <<
43 SCHED_TEXT 60 SCHED_TEXT
>> 61 CPUIDLE_TEXT
44 LOCK_TEXT 62 LOCK_TEXT
45 KPROBES_TEXT 63 KPROBES_TEXT
>> 64 IRQENTRY_TEXT
>> 65 SOFTIRQENTRY_TEXT
>> 66 *(.text.*)
46 *(.fixup) 67 *(.fixup)
>> 68 *(.gnu.warning)
>> 69 } :text = 0
>> 70 _etext = .; /* End of text section */
>> 71
>> 72 EXCEPTION_TABLE(16)
>> 73
>> 74 /* Exception table for data bus errors */
>> 75 __dbe_table : {
>> 76 __start___dbe_table = .;
>> 77 KEEP(*(__dbe_table))
>> 78 __stop___dbe_table = .;
47 } 79 }
48 _etext = .; <<
49 80
50 INIT_DATA_SECTION(PAGE_SIZE) !! 81 #ifdef CONFIG_CAVIUM_OCTEON_SOC
>> 82 #define NOTES_HEADER
>> 83 #else /* CONFIG_CAVIUM_OCTEON_SOC */
>> 84 #define NOTES_HEADER :note
>> 85 #endif /* CONFIG_CAVIUM_OCTEON_SOC */
>> 86 NOTES :text NOTES_HEADER
>> 87 .dummy : { *(.dummy) } :text
>> 88
>> 89 _sdata = .; /* Start of data section */
>> 90 RODATA
>> 91
>> 92 /* writeable */
>> 93 .data : { /* Data */
>> 94 . = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
>> 95
>> 96 INIT_TASK_DATA(THREAD_SIZE)
>> 97 NOSAVE_DATA
>> 98 PAGE_ALIGNED_DATA(PAGE_SIZE)
>> 99 CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 100 READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 101 DATA_DATA
>> 102 CONSTRUCTORS
>> 103 }
>> 104 BUG_TABLE
>> 105 _gp = . + 0x8000;
>> 106 .lit8 : {
>> 107 *(.lit8)
>> 108 }
>> 109 .lit4 : {
>> 110 *(.lit4)
>> 111 }
>> 112 /* We want the small data sections together, so single-instruction offsets
>> 113 can access them all, and initialized data all before uninitialized, so
>> 114 we can shorten the on-disk segment size. */
>> 115 .sdata : {
>> 116 *(.sdata)
>> 117 }
>> 118 _edata = .; /* End of data section */
51 119
52 _sdata = .; !! 120 /* will be freed after init */
53 RW_DATA(32,PAGE_SIZE,_THREAD_S !! 121 . = ALIGN(PAGE_SIZE); /* Init code and data */
54 RO_DATA(PAGE_SIZE) !! 122 __init_begin = .;
55 _edata = .; !! 123 INIT_TEXT_SECTION(PAGE_SIZE)
>> 124 INIT_DATA_SECTION(16)
56 125
57 EXCEPTION_TABLE(16) !! 126 . = ALIGN(4);
>> 127 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
>> 128 __mips_machines_start = .;
>> 129 KEEP(*(.mips.machines.init))
>> 130 __mips_machines_end = .;
>> 131 }
>> 132
>> 133 /* .exit.text is discarded at runtime, not link time, to deal with
>> 134 * references from .rodata
>> 135 */
>> 136 .exit.text : {
>> 137 EXIT_TEXT
>> 138 }
>> 139 .exit.data : {
>> 140 EXIT_DATA
>> 141 }
>> 142 #ifdef CONFIG_SMP
>> 143 PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 144 #endif
>> 145
>> 146 #ifdef CONFIG_MIPS_ELF_APPENDED_DTB
>> 147 .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
>> 148 *(.appended_dtb)
>> 149 KEEP(*(.appended_dtb))
>> 150 }
>> 151 #endif
>> 152
>> 153 #ifdef CONFIG_RELOCATABLE
>> 154 . = ALIGN(4);
58 155
59 BSS_SECTION(_PAGE_SIZE, _PAGE_SIZE, _P !! 156 .data.reloc : {
>> 157 _relocation_start = .;
>> 158 /*
>> 159 * Space for relocation table
>> 160 * This needs to be filled so that the
>> 161 * relocs tool can overwrite the content.
>> 162 * An invalid value is left at the start of the
>> 163 * section to abort relocation if the table
>> 164 * has not been filled in.
>> 165 */
>> 166 LONG(0xFFFFFFFF);
>> 167 FILL(0);
>> 168 . += CONFIG_RELOCATION_TABLE_SIZE - 4;
>> 169 _relocation_end = .;
>> 170 }
>> 171 #endif
>> 172
>> 173 #ifdef CONFIG_MIPS_RAW_APPENDED_DTB
>> 174 __appended_dtb = .;
>> 175 /* leave space for appended DTB */
>> 176 . += 0x100000;
>> 177 #endif
>> 178 /*
>> 179 * Align to 64K in attempt to eliminate holes before the
>> 180 * .bss..swapper_pg_dir section at the start of .bss. This
>> 181 * also satisfies PAGE_SIZE alignment as the largest page size
>> 182 * allowed is 64K.
>> 183 */
>> 184 . = ALIGN(0x10000);
>> 185 __init_end = .;
>> 186 /* freed after init ends here */
60 187
61 _end = .; !! 188 /*
>> 189 * Force .bss to 64K alignment so that .bss..swapper_pg_dir
>> 190 * gets that alignment. .sbss should be empty, so there will be
>> 191 * no holes after __init_end. */
>> 192 BSS_SECTION(0, 0x10000, 8)
>> 193
>> 194 _end = . ;
>> 195
>> 196 /* These mark the ABI of the kernel for debuggers. */
>> 197 .mdebug.abi32 : {
>> 198 KEEP(*(.mdebug.abi32))
>> 199 }
>> 200 .mdebug.abi64 : {
>> 201 KEEP(*(.mdebug.abi64))
>> 202 }
>> 203
>> 204 /* This is the MIPS specific mdebug section. */
>> 205 .mdebug : {
>> 206 *(.mdebug)
>> 207 }
62 208
63 STABS_DEBUG 209 STABS_DEBUG
64 DWARF_DEBUG 210 DWARF_DEBUG
65 ELF_DETAILS <<
66 .hexagon.attributes 0 : { *(.hexagon.a <<
67 211
>> 212 /* These must appear regardless of . */
>> 213 .gptab.sdata : {
>> 214 *(.gptab.data)
>> 215 *(.gptab.sdata)
>> 216 }
>> 217 .gptab.sbss : {
>> 218 *(.gptab.bss)
>> 219 *(.gptab.sbss)
>> 220 }
>> 221
>> 222 /* Sections to be discarded */
68 DISCARDS 223 DISCARDS
>> 224 /DISCARD/ : {
>> 225 /* ABI crap starts here */
>> 226 *(.MIPS.abiflags)
>> 227 *(.MIPS.options)
>> 228 *(.options)
>> 229 *(.pdr)
>> 230 *(.reginfo)
>> 231 }
69 } 232 }
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