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