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 <<
14 OUTPUT_ARCH(hexagon) <<
15 ENTRY(stext) <<
16 <<
17 jiffies = jiffies_64; <<
18 13
19 /* !! 14 #undef mips
20 See asm-generic/vmlinux.lds.h for expansion of !! 15 #define mips mips
21 See asm-generic/sections.h for seemingly requi !! 16 OUTPUT_ARCH(mips)
22 */ !! 17 ENTRY(kernel_entry)
23 !! 18 PHDRS {
24 #define PAGE_SIZE _PAGE_SIZE !! 19 text PT_LOAD FLAGS(7); /* RWX */
>> 20 note PT_NOTE FLAGS(4); /* R__ */
>> 21 }
>> 22
>> 23 #ifdef CONFIG_32BIT
>> 24 #ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 25 jiffies = jiffies_64;
>> 26 #else
>> 27 jiffies = jiffies_64 + 4;
>> 28 #endif
>> 29 #else
>> 30 jiffies = jiffies_64;
>> 31 #endif
25 32
26 SECTIONS 33 SECTIONS
27 { 34 {
28 . = PAGE_OFFSET; !! 35 #ifdef CONFIG_BOOT_ELF64
29 !! 36 /* Read-only sections, merged into text segment: */
30 __init_begin = .; !! 37 /* . = 0xc000000000000000; */
31 HEAD_TEXT_SECTION !! 38
32 INIT_TEXT_SECTION(PAGE_SIZE) !! 39 /* This is the value for an Origin kernel, taken from an IRIX kernel. */
33 PERCPU_SECTION(L1_CACHE_BYTES) !! 40 /* . = 0xc00000000001c000; */
34 __init_end = .; !! 41
35 !! 42 /* Set the vaddr for the text segment to a value
36 . = ALIGN(_PAGE_SIZE); !! 43 * >= 0xa800 0000 0001 9000 if no symmon is going to configured
37 _stext = .; !! 44 * >= 0xa800 0000 0030 0000 otherwise
38 .text : AT(ADDR(.text)) { !! 45 */
39 _text = .; !! 46
>> 47 /* . = 0xa800000000300000; */
>> 48 . = 0xffffffff80300000;
>> 49 #endif
>> 50 . = VMLINUX_LOAD_ADDRESS;
>> 51 /* read-only */
>> 52 _text = .; /* Text and read-only data */
>> 53 .text : {
40 TEXT_TEXT 54 TEXT_TEXT
41 IRQENTRY_TEXT <<
42 SOFTIRQENTRY_TEXT <<
43 SCHED_TEXT 55 SCHED_TEXT
44 LOCK_TEXT 56 LOCK_TEXT
45 KPROBES_TEXT 57 KPROBES_TEXT
>> 58 IRQENTRY_TEXT
>> 59 *(.text.*)
46 *(.fixup) 60 *(.fixup)
>> 61 *(.gnu.warning)
>> 62 } :text = 0
>> 63 _etext = .; /* End of text section */
>> 64
>> 65 EXCEPTION_TABLE(16)
>> 66
>> 67 /* Exception table for data bus errors */
>> 68 __dbe_table : {
>> 69 __start___dbe_table = .;
>> 70 *(__dbe_table)
>> 71 __stop___dbe_table = .;
47 } 72 }
48 _etext = .; <<
49 73
50 INIT_DATA_SECTION(PAGE_SIZE) !! 74 NOTES :text :note
>> 75 .dummy : { *(.dummy) } :text
51 76
52 _sdata = .; !! 77 _sdata = .; /* Start of data section */
53 RW_DATA(32,PAGE_SIZE,_THREAD_S !! 78 RODATA
54 RO_DATA(PAGE_SIZE) <<
55 _edata = .; <<
56 79
57 EXCEPTION_TABLE(16) !! 80 /* writeable */
>> 81 .data : { /* Data */
>> 82 . = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
>> 83
>> 84 INIT_TASK_DATA(THREAD_SIZE)
>> 85 NOSAVE_DATA
>> 86 CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 87 READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 88 DATA_DATA
>> 89 CONSTRUCTORS
>> 90 }
>> 91 _gp = . + 0x8000;
>> 92 .lit8 : {
>> 93 *(.lit8)
>> 94 }
>> 95 .lit4 : {
>> 96 *(.lit4)
>> 97 }
>> 98 /* We want the small data sections together, so single-instruction offsets
>> 99 can access them all, and initialized data all before uninitialized, so
>> 100 we can shorten the on-disk segment size. */
>> 101 .sdata : {
>> 102 *(.sdata)
>> 103 }
>> 104 _edata = .; /* End of data section */
>> 105
>> 106 /* will be freed after init */
>> 107 . = ALIGN(PAGE_SIZE); /* Init code and data */
>> 108 __init_begin = .;
>> 109 INIT_TEXT_SECTION(PAGE_SIZE)
>> 110 INIT_DATA_SECTION(16)
>> 111
>> 112 . = ALIGN(4);
>> 113 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
>> 114 __mips_machines_start = .;
>> 115 *(.mips.machines.init)
>> 116 __mips_machines_end = .;
>> 117 }
>> 118
>> 119 /* .exit.text is discarded at runtime, not link time, to deal with
>> 120 * references from .rodata
>> 121 */
>> 122 .exit.text : {
>> 123 EXIT_TEXT
>> 124 }
>> 125 .exit.data : {
>> 126 EXIT_DATA
>> 127 }
>> 128
>> 129 PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 130 /*
>> 131 * Align to 64K in attempt to eliminate holes before the
>> 132 * .bss..swapper_pg_dir section at the start of .bss. This
>> 133 * also satisfies PAGE_SIZE alignment as the largest page size
>> 134 * allowed is 64K.
>> 135 */
>> 136 . = ALIGN(0x10000);
>> 137 __init_end = .;
>> 138 /* freed after init ends here */
58 139
59 BSS_SECTION(_PAGE_SIZE, _PAGE_SIZE, _P !! 140 /*
>> 141 * Force .bss to 64K alignment so that .bss..swapper_pg_dir
>> 142 * gets that alignment. .sbss should be empty, so there will be
>> 143 * no holes after __init_end. */
>> 144 BSS_SECTION(0, 0x10000, 0)
>> 145
>> 146 _end = . ;
>> 147
>> 148 /* These mark the ABI of the kernel for debuggers. */
>> 149 .mdebug.abi32 : {
>> 150 KEEP(*(.mdebug.abi32))
>> 151 }
>> 152 .mdebug.abi64 : {
>> 153 KEEP(*(.mdebug.abi64))
>> 154 }
60 155
61 _end = .; !! 156 /* This is the MIPS specific mdebug section. */
>> 157 .mdebug : {
>> 158 *(.mdebug)
>> 159 }
62 160
63 STABS_DEBUG 161 STABS_DEBUG
64 DWARF_DEBUG 162 DWARF_DEBUG
65 ELF_DETAILS <<
66 .hexagon.attributes 0 : { *(.hexagon.a <<
67 163
>> 164 /* These must appear regardless of . */
>> 165 .gptab.sdata : {
>> 166 *(.gptab.data)
>> 167 *(.gptab.sdata)
>> 168 }
>> 169 .gptab.sbss : {
>> 170 *(.gptab.bss)
>> 171 *(.gptab.sbss)
>> 172 }
>> 173
>> 174 /* Sections to be discarded */
68 DISCARDS 175 DISCARDS
>> 176 /DISCARD/ : {
>> 177 /* ABI crap starts here */
>> 178 *(.MIPS.options)
>> 179 *(.options)
>> 180 *(.pdr)
>> 181 *(.reginfo)
>> 182 }
69 } 183 }
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