aboutsummaryrefslogtreecommitdiff
path: root/arch/blackfin/kernel/vmlinux.lds.S
blob: 10e12539000ebad641207ee49daf7e9ad5b8cad3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
/*
 * Copyright 2004-2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later
 */

#define VMLINUX_SYMBOL(_sym_) _##_sym_

#include <asm-generic/vmlinux.lds.h>
#include <asm/mem_map.h>
#include <asm/page.h>
#include <asm/thread_info.h>

OUTPUT_FORMAT("elf32-bfin")
ENTRY(__start)
_jiffies = _jiffies_64;

SECTIONS
{
	. = CONFIG_BOOT_LOAD;
	/* Neither the text, ro_data or bss section need to be aligned
	 * So pack them back to back
	 */
	.text :
	{
		__text = .;
		_text = .;
		__stext = .;
		TEXT_TEXT
#ifndef CONFIG_SCHEDULE_L1
		SCHED_TEXT
#endif
		LOCK_TEXT
		IRQENTRY_TEXT
		KPROBES_TEXT
		*(.text.*)
		*(.fixup)

#if !L1_CODE_LENGTH
		*(.l1.text)
#endif

		. = ALIGN(16);
		___start___ex_table = .;
		*(__ex_table)
		___stop___ex_table = .;

		__etext = .;
	}

	NOTES

	/* Just in case the first read only is a 32-bit access */
	RO_DATA(4)

	.bss :
	{
		. = ALIGN(4);
		___bss_start = .;
		*(.bss .bss.*)
		*(COMMON)
#if !L1_DATA_A_LENGTH
		*(.l1.bss)
#endif
#if !L1_DATA_B_LENGTH
		*(.l1.bss.B)
#endif
		. = ALIGN(4);
		___bss_stop = .;
	}

	.data :
	{
		__sdata = .;
		/* This gets done first, so the glob doesn't suck it in */
		CACHELINE_ALIGNED_DATA(32)

#if !L1_DATA_A_LENGTH
		. = ALIGN(32);
		*(.data_l1.cacheline_aligned)
		*(.l1.data)
#endif
#if !L1_DATA_B_LENGTH
		*(.l1.data.B)
#endif
#if !L2_LENGTH
		. = ALIGN(32);
		*(.data_l2.cacheline_aligned)
		*(.l2.data)
#endif

		DATA_DATA
		CONSTRUCTORS

		INIT_TASK_DATA(THREAD_SIZE)

		__edata = .;
	}

	/* The init section should be last, so when we free it, it goes into
	 * the general memory pool, and (hopefully) will decrease fragmentation
	 * a tiny bit. The init section has a _requirement_ that it be
	 * PAGE_SIZE aligned
	 */
	. = ALIGN(PAGE_SIZE);
	___init_begin = .;

	INIT_TEXT_SECTION(PAGE_SIZE)
	. = ALIGN(16);
	INIT_DATA_SECTION(16)
	PERCPU(4)

	/* we have to discard exit text and such at runtime, not link time, to
	 * handle embedded cross-section references (alt instructions, bug
	 * table, eh_frame, etc...)
	 */
	.exit.text :
	{
		EXIT_TEXT
	}
	.exit.data :
	{
		EXIT_DATA
	}

	__l1_lma_start = .;

	.text_l1 L1_CODE_START : AT(LOADADDR(.exit.data) + SIZEOF(.exit.data))
	{
		. = ALIGN(4);
		__stext_l1 = .;
		*(.l1.text)
#ifdef CONFIG_SCHEDULE_L1
		SCHED_TEXT
#endif
		. = ALIGN(4);
		__etext_l1 = .;
	}
	ASSERT (SIZEOF(.text_l1) <= L1_CODE_LENGTH, "L1 text overflow!")

	.data_l1 L1_DATA_A_START : AT(LOADADDR(.text_l1) + SIZEOF(.text_l1))
	{
		. = ALIGN(4);
		__sdata_l1 = .;
		*(.l1.data)
		__edata_l1 = .;

		. = ALIGN(32);
		*(.data_l1.cacheline_aligned)

		. = ALIGN(4);
		__sbss_l1 = .;
		*(.l1.bss)
		. = ALIGN(4);
		__ebss_l1 = .;
	}
	ASSERT (SIZEOF(.data_l1) <= L1_DATA_A_LENGTH, "L1 data A overflow!")

	.data_b_l1 L1_DATA_B_START : AT(LOADADDR(.data_l1) + SIZEOF(.data_l1))
	{
		. = ALIGN(4);
		__sdata_b_l1 = .;
		*(.l1.data.B)
		__edata_b_l1 = .;

		. = ALIGN(4);
		__sbss_b_l1 = .;
		*(.l1.bss.B)
		. = ALIGN(4);
		__ebss_b_l1 = .;
	}
	ASSERT (SIZEOF(.data_b_l1) <= L1_DATA_B_LENGTH, "L1 data B overflow!")

	__l2_lma_start = LOADADDR(.data_b_l1) + SIZEOF(.data_b_l1);

	.text_data_l2 L2_START : AT(LOADADDR(.data_b_l1) + SIZEOF(.data_b_l1))
	{
		. = ALIGN(4);
		__stext_l2 = .;
		*(.l2.text)
		. = ALIGN(4);
		__etext_l2 = .;

		. = ALIGN(4);
		__sdata_l2 = .;
		*(.l2.data)
		__edata_l2 = .;

		. = ALIGN(32);
		*(.data_l2.cacheline_aligned)

		. = ALIGN(4);
		__sbss_l2 = .;
		*(.l2.bss)
		. = ALIGN(4);
		__ebss_l2 = .;
	}
	ASSERT (SIZEOF(.text_data_l2) <= L2_LENGTH, "L2 overflow!")

	/* Force trailing alignment of our init section so that when we
	 * free our init memory, we don't leave behind a partial page.
	 */
	. = LOADADDR(.text_data_l2) + SIZEOF(.text_data_l2);
	. = ALIGN(PAGE_SIZE);
	___init_end = .;

	__end =.;

	STABS_DEBUG

	DWARF_DEBUG

	DISCARDS
}