1 /* SPDX-License-Identifier: GPL-2.0-or-later * !! 1 #include <asm/asm-offsets.h>
2 /* !! 2 #include <asm/thread_info.h>
3 * OpenRISC vmlinux.lds.S <<
4 * <<
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 */ <<
15 3
16 /* TODO !! 4 #define PAGE_SIZE _PAGE_SIZE
17 * - clean up __offset & stuff <<
18 * - change all 8192 alignment to <<
19 * - recheck if all alignments ar <<
20 */ <<
21 5
22 # define LOAD_OFFSET PAGE_OFFSET !! 6 /*
23 # define LOAD_BASE PAGE_OFFSET !! 7 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
>> 8 * ensure that it has .bss alignment (64K).
>> 9 */
>> 10 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
24 11
25 #include <asm/page.h> <<
26 #include <asm/cache.h> <<
27 #include <asm/thread_info.h> <<
28 #include <asm-generic/vmlinux.lds.h> 12 #include <asm-generic/vmlinux.lds.h>
29 13
30 #ifdef __OR1K__ !! 14 #undef mips
31 #define __OUTPUT_FORMAT "elf32-or1k" !! 15 #define mips mips
>> 16 OUTPUT_ARCH(mips)
>> 17 ENTRY(kernel_entry)
>> 18 PHDRS {
>> 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
32 #else 29 #else
33 #define __OUTPUT_FORMAT "elf32-or32" !! 30 jiffies = jiffies_64;
34 #endif 31 #endif
35 32
36 OUTPUT_FORMAT(__OUTPUT_FORMAT, __OUTPUT_FORMAT <<
37 jiffies = jiffies_64 + 4; <<
38 <<
39 SECTIONS 33 SECTIONS
40 { 34 {
41 /* Read-only sections, merged into tex !! 35 #ifdef CONFIG_BOOT_ELF64
42 . = LOAD_BASE ; !! 36 /* Read-only sections, merged into text segment: */
43 !! 37 /* . = 0xc000000000000000; */
44 _text = .; !! 38
45 !! 39 /* This is the value for an Origin kernel, taken from an IRIX kernel. */
46 /* _s_kernel_ro must be page aligned * !! 40 /* . = 0xc00000000001c000; */
47 . = ALIGN(PAGE_SIZE); !! 41
48 _s_kernel_ro = .; !! 42 /* Set the vaddr for the text segment to a value
49 !! 43 * >= 0xa800 0000 0001 9000 if no symmon is going to configured
50 .text : AT(ADDR(.tex !! 44 * >= 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 */ 45 */
66 46
67 _sdata = .; !! 47 /* . = 0xa800000000300000; */
68 !! 48 . = 0xffffffff80300000;
69 /* Page alignment required for RO_DATA !! 49 #endif
70 RO_DATA(PAGE_SIZE) !! 50 . = VMLINUX_LOAD_ADDRESS;
71 _e_kernel_ro = .; !! 51 /* read-only */
72 !! 52 _text = .; /* Text and read-only data */
73 /* Whatever comes after _e_kernel_ro h !! 53 .text : {
>> 54 TEXT_TEXT
>> 55 SCHED_TEXT
>> 56 LOCK_TEXT
>> 57 KPROBES_TEXT
>> 58 IRQENTRY_TEXT
>> 59 *(.text.*)
>> 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 = .;
>> 72 }
74 73
75 /* 32 here is cacheline size... rechec !! 74 NOTES :text :note
76 RW_DATA(32, PAGE_SIZE, PAGE_SIZE) !! 75 .dummy : { *(.dummy) } :text
77 76
78 _edata = .; !! 77 _sdata = .; /* Start of data section */
>> 78 RODATA
79 79
80 EXCEPTION_TABLE(4) !! 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 */
81 105
82 /* Init code and data */ !! 106 /* will be freed after init */
83 . = ALIGN(PAGE_SIZE); !! 107 . = ALIGN(PAGE_SIZE); /* Init code and data */
84 __init_begin = .; 108 __init_begin = .;
85 <<
86 HEAD_TEXT_SECTION <<
87 <<
88 /* Page aligned */ <<
89 INIT_TEXT_SECTION(PAGE_SIZE) 109 INIT_TEXT_SECTION(PAGE_SIZE)
90 <<
91 /* Align __setup_start on 16 byte boun <<
92 INIT_DATA_SECTION(16) 110 INIT_DATA_SECTION(16)
93 111
94 PERCPU_SECTION(L1_CACHE_BYTES) !! 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 }
95 118
96 __init_end = .; !! 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 }
97 128
98 BSS_SECTION(0, 0, 0x20) !! 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 */
>> 139
>> 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 }
99 155
100 _end = .; !! 156 /* This is the MIPS specific mdebug section. */
>> 157 .mdebug : {
>> 158 *(.mdebug)
>> 159 }
101 160
102 /* Throw in the debugging sections */ <<
103 STABS_DEBUG 161 STABS_DEBUG
104 DWARF_DEBUG 162 DWARF_DEBUG
105 ELF_DETAILS <<
106 163
107 /* Sections to be discarded -- must be !! 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 */
108 DISCARDS 175 DISCARDS
>> 176 /DISCARD/ : {
>> 177 /* ABI crap starts here */
>> 178 *(.MIPS.options)
>> 179 *(.options)
>> 180 *(.pdr)
>> 181 *(.reginfo)
>> 182 }
109 } 183 }
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