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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 = . ; | |
27 | *(.text .text.*) | |
28 | *(.fixup) | |
7cf79d59 MS |
29 | EXIT_TEXT |
30 | EXIT_CALL | |
16bfeaf2 MS |
31 | SCHED_TEXT |
32 | LOCK_TEXT | |
33 | KPROBES_TEXT | |
7cf79d59 | 34 | IRQENTRY_TEXT |
16bfeaf2 MS |
35 | . = ALIGN (4) ; |
36 | _etext = . ; | |
37 | } | |
38 | ||
39 | . = ALIGN (4) ; | |
a061dd52 MS |
40 | __fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET) { |
41 | _fdt_start = . ; /* place for fdt blob */ | |
42 | *(__fdt_blob) ; /* Any link-placed DTB */ | |
43 | . = _fdt_start + 0x4000; /* Pad up to 16kbyte */ | |
44 | _fdt_end = . ; | |
45 | } | |
16bfeaf2 MS |
46 | |
47 | . = ALIGN(16); | |
48 | RODATA | |
8cc11f5a | 49 | EXCEPTION_TABLE(16) |
16bfeaf2 MS |
50 | |
51 | /* | |
52 | * sdata2 section can go anywhere, but must be word aligned | |
53 | * and SDA2_BASE must point to the middle of it | |
54 | */ | |
a061dd52 | 55 | .sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) { |
16bfeaf2 MS |
56 | _ssrw = .; |
57 | . = ALIGN(4096); /* page aligned when MMU used - origin 0x8 */ | |
58 | *(.sdata2) | |
59 | . = ALIGN(8); | |
60 | _essrw = .; | |
61 | _ssrw_size = _essrw - _ssrw; | |
62 | _KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2); | |
63 | } | |
64 | ||
65 | _sdata = . ; | |
8cc11f5a | 66 | RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE) |
16bfeaf2 MS |
67 | _edata = . ; |
68 | ||
69 | /* Reserve some low RAM for r0 based memory references */ | |
70 | . = ALIGN(0x4) ; | |
71 | r0_ram = . ; | |
72 | . = . + 4096; /* a page should be enough */ | |
73 | ||
16bfeaf2 MS |
74 | /* Under the microblaze ABI, .sdata and .sbss must be contiguous */ |
75 | . = ALIGN(8); | |
a061dd52 | 76 | .sdata : AT(ADDR(.sdata) - LOAD_OFFSET) { |
16bfeaf2 MS |
77 | _ssro = .; |
78 | *(.sdata) | |
79 | } | |
80 | ||
a061dd52 | 81 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { |
16bfeaf2 MS |
82 | _ssbss = .; |
83 | *(.sbss) | |
84 | _esbss = .; | |
85 | _essro = .; | |
86 | _ssro_size = _essro - _ssro ; | |
87 | _KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ; | |
88 | } | |
89 | ||
13cdee23 | 90 | . = ALIGN(PAGE_SIZE); |
16bfeaf2 MS |
91 | __init_begin = .; |
92 | ||
8cc11f5a | 93 | INIT_TEXT_SECTION(PAGE_SIZE) |
16bfeaf2 | 94 | |
a061dd52 | 95 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { |
05bf7d46 MS |
96 | INIT_DATA |
97 | } | |
16bfeaf2 MS |
98 | |
99 | . = ALIGN(4); | |
a061dd52 | 100 | .init.ivt : AT(ADDR(.init.ivt) - LOAD_OFFSET) { |
16bfeaf2 MS |
101 | __ivt_start = .; |
102 | *(.init.ivt) | |
103 | __ivt_end = .; | |
104 | } | |
105 | ||
a061dd52 | 106 | .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { |
8cc11f5a | 107 | INIT_SETUP(0) |
16bfeaf2 MS |
108 | } |
109 | ||
a061dd52 | 110 | .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET ) { |
8cc11f5a | 111 | INIT_CALLS |
16bfeaf2 MS |
112 | } |
113 | ||
a061dd52 | 114 | .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { |
8cc11f5a | 115 | CON_INITCALL |
16bfeaf2 MS |
116 | } |
117 | ||
6b437426 AB |
118 | SECURITY_INIT |
119 | ||
16bfeaf2 MS |
120 | __init_end_before_initramfs = .; |
121 | ||
a061dd52 | 122 | .init.ramfs ALIGN(4096) : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { |
16bfeaf2 MS |
123 | __initramfs_start = .; |
124 | *(.init.ramfs) | |
125 | __initramfs_end = .; | |
126 | . = ALIGN(4); | |
127 | LONG(0); | |
128 | /* | |
129 | * FIXME this can break initramfs for MMU. | |
130 | * Pad init.ramfs up to page boundary, | |
131 | * so that __init_end == __bss_start. This will make image.elf | |
132 | * consistent with the image.bin | |
133 | */ | |
134 | /* . = ALIGN(4096); */ | |
135 | } | |
136 | __init_end = .; | |
137 | ||
a061dd52 MS |
138 | .bss ALIGN (4096) : AT(ADDR(.bss) - LOAD_OFFSET) { |
139 | /* page aligned when MMU used */ | |
16bfeaf2 MS |
140 | __bss_start = . ; |
141 | *(.bss*) | |
142 | *(COMMON) | |
143 | . = ALIGN (4) ; | |
144 | __bss_stop = . ; | |
145 | _ebss = . ; | |
146 | } | |
147 | . = ALIGN(4096); | |
148 | _end = .; | |
405d967d | 149 | |
023bf6f1 | 150 | DISCARDS |
16bfeaf2 | 151 | } |