1 /* SPDX-License-Identifier: GPL-2.0-or-later * !! 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 * OpenRISC vmlinux.lds.S !! 8 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
4 * !! 9 * ensure that it has .bss alignment (64K).
5 * Linux architectural port borrowing liberall <<
6 * others. All original copyrights apply as p <<
7 * declaration. <<
8 * <<
9 * Modifications for the OpenRISC architecture <<
10 * Copyright (C) 2003 Matjaz Breskvar <phoenix@ <<
11 * Copyright (C) 2010-2011 Jonas Bonn <jonas@so <<
12 * <<
13 * ld script for OpenRISC architecture <<
14 */ 10 */
>> 11 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
15 12
16 /* TODO !! 13 /* Cavium Octeon should not have a separate PT_NOTE Program Header. */
17 * - clean up __offset & stuff !! 14 #ifndef CONFIG_CAVIUM_OCTEON_SOC
18 * - change all 8192 alignment to !! 15 #define EMITS_PT_NOTE
19 * - recheck if all alignments ar !! 16 #endif
20 */ <<
21 17
22 # define LOAD_OFFSET PAGE_OFFSET !! 18 #define RUNTIME_DISCARD_EXIT
23 # define LOAD_BASE PAGE_OFFSET <<
24 19
25 #include <asm/page.h> <<
26 #include <asm/cache.h> <<
27 #include <asm/thread_info.h> <<
28 #include <asm-generic/vmlinux.lds.h> 20 #include <asm-generic/vmlinux.lds.h>
29 21
30 #ifdef __OR1K__ !! 22 #undef mips
31 #define __OUTPUT_FORMAT "elf32-or1k" !! 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
32 #else 39 #else
33 #define __OUTPUT_FORMAT "elf32-or32" !! 40 jiffies = jiffies_64;
34 #endif 41 #endif
35 42
36 OUTPUT_FORMAT(__OUTPUT_FORMAT, __OUTPUT_FORMAT <<
37 jiffies = jiffies_64 + 4; <<
38 <<
39 SECTIONS 43 SECTIONS
40 { 44 {
41 /* Read-only sections, merged into tex !! 45 #ifdef CONFIG_BOOT_ELF64
42 . = LOAD_BASE ; !! 46 /* Read-only sections, merged into text segment: */
43 !! 47 /* . = 0xc000000000000000; */
44 _text = .; !! 48
45 !! 49 /* This is the value for an Origin kernel, taken from an IRIX kernel. */
46 /* _s_kernel_ro must be page aligned * !! 50 /* . = 0xc00000000001c000; */
47 . = ALIGN(PAGE_SIZE); !! 51
48 _s_kernel_ro = .; !! 52 /* Set the vaddr for the text segment to a value
49 !! 53 * >= 0xa800 0000 0001 9000 if no symmon is going to configured
50 .text : AT(ADDR(.tex !! 54 * >= 0xa800 0000 0030 0000 otherwise
51 { <<
52 _stext = .; <<
53 TEXT_TEXT <<
54 SCHED_TEXT <<
55 LOCK_TEXT <<
56 KPROBES_TEXT <<
57 IRQENTRY_TEXT <<
58 SOFTIRQENTRY_TEXT <<
59 *(.fixup) <<
60 *(.text.__*) <<
61 _etext = .; <<
62 } <<
63 /* TODO: Check if fixup and text.__* a <<
64 * fixup is definitely necessary <<
65 */ 55 */
66 56
67 _sdata = .; !! 57 /* . = 0xa800000000300000; */
68 !! 58 . = 0xffffffff80300000;
69 /* Page alignment required for RO_DATA !! 59 #endif
70 RO_DATA(PAGE_SIZE) !! 60 . = LINKER_LOAD_ADDRESS;
71 _e_kernel_ro = .; !! 61 /* read-only */
72 !! 62 _text = .; /* Text and read-only data */
73 /* Whatever comes after _e_kernel_ro h !! 63 .text : {
74 !! 64 TEXT_TEXT
75 /* 32 here is cacheline size... rechec !! 65 SCHED_TEXT
76 RW_DATA(32, PAGE_SIZE, PAGE_SIZE) !! 66 LOCK_TEXT
>> 67 KPROBES_TEXT
>> 68 IRQENTRY_TEXT
>> 69 SOFTIRQENTRY_TEXT
>> 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 }
77 85
78 _edata = .; !! 86 _sdata = .; /* Start of data section */
>> 87 RO_DATA(4096)
79 88
80 EXCEPTION_TABLE(4) !! 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 */
81 116
82 /* Init code and data */ !! 117 /* will be freed after init */
83 . = ALIGN(PAGE_SIZE); !! 118 . = ALIGN(PAGE_SIZE); /* Init code and data */
84 __init_begin = .; 119 __init_begin = .;
>> 120 INIT_TEXT_SECTION(PAGE_SIZE)
>> 121 INIT_DATA_SECTION(16)
>> 122
>> 123 . = ALIGN(4);
>> 124 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
>> 125 __mips_machines_start = .;
>> 126 KEEP(*(.mips.machines.init))
>> 127 __mips_machines_end = .;
>> 128 }
85 129
86 HEAD_TEXT_SECTION !! 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
87 142
88 /* Page aligned */ !! 143 .rel.dyn : ALIGN(8) {
89 INIT_TEXT_SECTION(PAGE_SIZE) !! 144 *(.rel)
>> 145 *(.rel*)
>> 146 }
90 147
91 /* Align __setup_start on 16 byte boun !! 148 #ifdef CONFIG_MIPS_ELF_APPENDED_DTB
92 INIT_DATA_SECTION(16) !! 149 STRUCT_ALIGN();
>> 150 .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
>> 151 *(.appended_dtb)
>> 152 KEEP(*(.appended_dtb))
>> 153 }
>> 154 #endif
93 155
94 PERCPU_SECTION(L1_CACHE_BYTES) !! 156 #ifdef CONFIG_RELOCATABLE
>> 157 . = ALIGN(4);
95 158
96 __init_end = .; !! 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
97 175
98 BSS_SECTION(0, 0, 0x20) !! 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
>> 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 */
>> 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
>> 202 _end = . ;
>> 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 }
99 211
100 _end = .; !! 212 /* This is the MIPS specific mdebug section. */
>> 213 .mdebug : {
>> 214 *(.mdebug)
>> 215 }
101 216
102 /* Throw in the debugging sections */ <<
103 STABS_DEBUG 217 STABS_DEBUG
104 DWARF_DEBUG 218 DWARF_DEBUG
105 ELF_DETAILS 219 ELF_DETAILS
106 220
107 /* Sections to be discarded -- must be !! 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 */
108 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 }
109 } 242 }
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