xref: /linux/arch/microblaze/kernel/vmlinux.lds.S (revision 27258e448eb301cf89e351df87aa8cb916653bf2) 
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
11OUTPUT_FORMAT("elf32-microblaze", "elf32-microblaze", "elf32-microblaze")
12OUTPUT_ARCH(microblaze)
13ENTRY(_start)
14
15#include <asm-generic/vmlinux.lds.h>
16
17jiffies = jiffies_64 + 4;
18
19SECTIONS {
20	. = CONFIG_KERNEL_START;
21	.text : {
22		_text = . ;
23		_stext = . ;
24		*(.text .text.*)
25		*(.fixup)
26               EXIT_TEXT
27               EXIT_CALL
28		SCHED_TEXT
29		LOCK_TEXT
30		KPROBES_TEXT
31		. = ALIGN (4) ;
32		_etext = . ;
33	}
34
35	. = ALIGN (4) ;
36	_fdt_start = . ; /* place for fdt blob */
37	. = . + 0x4000;
38	_fdt_end = . ;
39
40	. = ALIGN(16);
41	RODATA
42	. = ALIGN(16);
43	__ex_table : {
44		__start___ex_table = .;
45		*(__ex_table)
46		__stop___ex_table = .;
47	}
48
49	/*
50	 * sdata2 section can go anywhere, but must be word aligned
51	 * and SDA2_BASE must point to the middle of it
52	 */
53	.sdata2 : {
54		_ssrw = .;
55		. = ALIGN(4096); /* page aligned when MMU used - origin 0x8 */
56		*(.sdata2)
57	. = ALIGN(8);
58	_essrw = .;
59	_ssrw_size = _essrw - _ssrw;
60	_KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2);
61	}
62
63	_sdata = . ;
64	.data ALIGN (4096) : { /* page aligned when MMU used - origin 0x4 */
65		DATA_DATA
66		CONSTRUCTORS
67	}
68	. = ALIGN(32);
69	.data.cacheline_aligned : { *(.data.cacheline_aligned) }
70	_edata = . ;
71
72	/* Reserve some low RAM for r0 based memory references */
73	. = ALIGN(0x4) ;
74	r0_ram = . ;
75	. = . +  4096;	/* a page should be enough */
76
77	/* The initial task */
78	. = ALIGN(8192);
79	.data.init_task : { *(.data.init_task) }
80
81	/* Under the microblaze ABI, .sdata and .sbss must be contiguous */
82	. = ALIGN(8);
83	.sdata : {
84		_ssro = .;
85		*(.sdata)
86	}
87
88	.sbss :	{
89		_ssbss = .;
90		*(.sbss)
91		_esbss = .;
92		_essro = .;
93		_ssro_size = _essro - _ssro ;
94		_KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
95	}
96
97	__init_begin = .;
98
99	. = ALIGN(4096);
100	.init.text : {
101		_sinittext = . ;
102		INIT_TEXT
103		_einittext = .;
104	}
105
106	.init.data : {
107		INIT_DATA
108	}
109
110	. = ALIGN(4);
111	.init.ivt : {
112		__ivt_start = .;
113		*(.init.ivt)
114		__ivt_end = .;
115	}
116
117	.init.setup : {
118		__setup_start = .;
119		*(.init.setup)
120		__setup_end = .;
121	}
122
123	.initcall.init : {
124		__initcall_start = .;
125		INITCALLS
126		__initcall_end = .;
127	}
128
129	.con_initcall.init : {
130		__con_initcall_start = .;
131		*(.con_initcall.init)
132		__con_initcall_end = .;
133	}
134
135	SECURITY_INIT
136
137	__init_end_before_initramfs = .;
138
139	.init.ramfs ALIGN(4096) : {
140		__initramfs_start = .;
141		*(.init.ramfs)
142		__initramfs_end = .;
143		. = ALIGN(4);
144		LONG(0);
145/*
146 * FIXME this can break initramfs for MMU.
147 * Pad init.ramfs up to page boundary,
148 * so that __init_end == __bss_start. This will make image.elf
149 * consistent with the image.bin
150 */
151		/* . = ALIGN(4096); */
152	}
153	__init_end = .;
154
155	.bss ALIGN (4096) : { /* page aligned when MMU used */
156		__bss_start = . ;
157			*(.bss*)
158			*(COMMON)
159		. = ALIGN (4) ;
160		__bss_stop = . ;
161		_ebss = . ;
162	}
163	. = ALIGN(4096);
164	_end = .;
165
166	DISCARDS
167}
168