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16bfeaf2 MS |
1 | /* |
2 | * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu> | |
3 | * Copyright (C) 2008-2009 PetaLogix | |
4 | * Copyright (C) 2006 Atmark Techno, Inc. | |
5 | * | |
6 | * This file is subject to the terms and conditions of the GNU General Public | |
7 | * License. See the file "COPYING" in the main directory of this archive | |
8 | * for more details. | |
9 | */ | |
10 | ||
11 | OUTPUT_FORMAT("elf32-microblaze", "elf32-microblaze", "elf32-microblaze") | |
12 | OUTPUT_ARCH(microblaze) | |
13 | ENTRY(_start) | |
14 | ||
8cc11f5a | 15 | #include <asm/page.h> |
a061dd52 | 16 | #include <asm-generic/vmlinux.lds.h> |
8cc11f5a | 17 | #include <asm/thread_info.h> |
16bfeaf2 MS |
18 | |
19 | jiffies = jiffies_64 + 4; | |
20 | ||
21 | SECTIONS { | |
d4c1285e | 22 | . = CONFIG_KERNEL_START; |
cfa9a775 | 23 | _start = CONFIG_KERNEL_BASE_ADDR; |
a061dd52 | 24 | .text : AT(ADDR(.text) - LOAD_OFFSET) { |
16bfeaf2 MS |
25 | _text = . ; |
26 | _stext = . ; | |
7a0248e8 SM |
27 | HEAD_TEXT |
28 | TEXT_TEXT | |
16bfeaf2 | 29 | *(.fixup) |
7cf79d59 MS |
30 | EXIT_TEXT |
31 | EXIT_CALL | |
16bfeaf2 MS |
32 | SCHED_TEXT |
33 | LOCK_TEXT | |
34 | KPROBES_TEXT | |
7cf79d59 | 35 | IRQENTRY_TEXT |
16bfeaf2 MS |
36 | . = ALIGN (4) ; |
37 | _etext = . ; | |
38 | } | |
39 | ||
40 | . = ALIGN (4) ; | |
a061dd52 MS |
41 | __fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET) { |
42 | _fdt_start = . ; /* place for fdt blob */ | |
43 | *(__fdt_blob) ; /* Any link-placed DTB */ | |
44 | . = _fdt_start + 0x4000; /* Pad up to 16kbyte */ | |
45 | _fdt_end = . ; | |
46 | } | |
16bfeaf2 MS |
47 | |
48 | . = ALIGN(16); | |
49 | RODATA | |
8cc11f5a | 50 | EXCEPTION_TABLE(16) |
16bfeaf2 MS |
51 | |
52 | /* | |
53 | * sdata2 section can go anywhere, but must be word aligned | |
54 | * and SDA2_BASE must point to the middle of it | |
55 | */ | |
a061dd52 | 56 | .sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) { |
16bfeaf2 MS |
57 | _ssrw = .; |
58 | . = ALIGN(4096); /* page aligned when MMU used - origin 0x8 */ | |
59 | *(.sdata2) | |
60 | . = ALIGN(8); | |
61 | _essrw = .; | |
62 | _ssrw_size = _essrw - _ssrw; | |
63 | _KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2); | |
64 | } | |
65 | ||
66 | _sdata = . ; | |
8cc11f5a | 67 | RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE) |
16bfeaf2 MS |
68 | _edata = . ; |
69 | ||
70 | /* Reserve some low RAM for r0 based memory references */ | |
71 | . = ALIGN(0x4) ; | |
72 | r0_ram = . ; | |
73 | . = . + 4096; /* a page should be enough */ | |
74 | ||
16bfeaf2 MS |
75 | /* Under the microblaze ABI, .sdata and .sbss must be contiguous */ |
76 | . = ALIGN(8); | |
a061dd52 | 77 | .sdata : AT(ADDR(.sdata) - LOAD_OFFSET) { |
16bfeaf2 MS |
78 | _ssro = .; |
79 | *(.sdata) | |
80 | } | |
81 | ||
a061dd52 | 82 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { |
16bfeaf2 MS |
83 | _ssbss = .; |
84 | *(.sbss) | |
85 | _esbss = .; | |
86 | _essro = .; | |
87 | _ssro_size = _essro - _ssro ; | |
88 | _KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ; | |
89 | } | |
90 | ||
13cdee23 | 91 | . = ALIGN(PAGE_SIZE); |
16bfeaf2 MS |
92 | __init_begin = .; |
93 | ||
8cc11f5a | 94 | INIT_TEXT_SECTION(PAGE_SIZE) |
16bfeaf2 | 95 | |
a061dd52 | 96 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { |
05bf7d46 MS |
97 | INIT_DATA |
98 | } | |
16bfeaf2 MS |
99 | |
100 | . = ALIGN(4); | |
a061dd52 | 101 | .init.ivt : AT(ADDR(.init.ivt) - LOAD_OFFSET) { |
16bfeaf2 MS |
102 | __ivt_start = .; |
103 | *(.init.ivt) | |
104 | __ivt_end = .; | |
105 | } | |
106 | ||
a061dd52 | 107 | .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { |
8cc11f5a | 108 | INIT_SETUP(0) |
16bfeaf2 MS |
109 | } |
110 | ||
a061dd52 | 111 | .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET ) { |
8cc11f5a | 112 | INIT_CALLS |
16bfeaf2 MS |
113 | } |
114 | ||
a061dd52 | 115 | .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { |
8cc11f5a | 116 | CON_INITCALL |
16bfeaf2 MS |
117 | } |
118 | ||
6b437426 AB |
119 | SECURITY_INIT |
120 | ||
16bfeaf2 MS |
121 | __init_end_before_initramfs = .; |
122 | ||
a061dd52 | 123 | .init.ramfs ALIGN(4096) : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { |
16bfeaf2 MS |
124 | __initramfs_start = .; |
125 | *(.init.ramfs) | |
126 | __initramfs_end = .; | |
127 | . = ALIGN(4); | |
128 | LONG(0); | |
129 | /* | |
130 | * FIXME this can break initramfs for MMU. | |
131 | * Pad init.ramfs up to page boundary, | |
132 | * so that __init_end == __bss_start. This will make image.elf | |
133 | * consistent with the image.bin | |
134 | */ | |
135 | /* . = ALIGN(4096); */ | |
136 | } | |
137 | __init_end = .; | |
138 | ||
a061dd52 MS |
139 | .bss ALIGN (4096) : AT(ADDR(.bss) - LOAD_OFFSET) { |
140 | /* page aligned when MMU used */ | |
16bfeaf2 MS |
141 | __bss_start = . ; |
142 | *(.bss*) | |
143 | *(COMMON) | |
144 | . = ALIGN (4) ; | |
145 | __bss_stop = . ; | |
146 | _ebss = . ; | |
147 | } | |
148 | . = ALIGN(4096); | |
149 | _end = .; | |
405d967d | 150 | |
023bf6f1 | 151 | DISCARDS |
16bfeaf2 | 152 | } |