summaryrefslogtreecommitdiffstats
path: root/arch/mips/kernel/vmlinux.lds.S
blob: 0a93e83cd01479a4abc952e2e41a853dbf4159b9 (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
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>

#define PAGE_SIZE _PAGE_SIZE

/*
 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
 * ensure that it has .bss alignment (64K).
 */
#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)

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

#undef mips
#define mips mips
OUTPUT_ARCH(mips)
ENTRY(kernel_entry)
PHDRS {
	text PT_LOAD FLAGS(7);	/* RWX */
#ifndef CONFIG_CAVIUM_OCTEON_SOC
	note PT_NOTE FLAGS(4);	/* R__ */
#endif /* CAVIUM_OCTEON_SOC */
}

#ifdef CONFIG_32BIT
	#ifdef CONFIG_CPU_LITTLE_ENDIAN
		jiffies	 = jiffies_64;
	#else
		jiffies	 = jiffies_64 + 4;
	#endif
#else
	jiffies	 = jiffies_64;
#endif

SECTIONS
{
#ifdef CONFIG_BOOT_ELF64
	/* Read-only sections, merged into text segment: */
	/* . = 0xc000000000000000; */

	/* This is the value for an Origin kernel, taken from an IRIX kernel.  */
	/* . = 0xc00000000001c000; */

	/* Set the vaddr for the text segment to a value
	 *   >= 0xa800 0000 0001 9000 if no symmon is going to configured
	 *   >= 0xa800 0000 0030 0000 otherwise
	 */

	/* . = 0xa800000000300000; */
	. = 0xffffffff80300000;
#endif
	. = VMLINUX_LOAD_ADDRESS;
	/* read-only */
	_text = .;	/* Text and read-only data */
	.text : {
		TEXT_TEXT
		SCHED_TEXT
		LOCK_TEXT
		KPROBES_TEXT
		IRQENTRY_TEXT
		*(.text.*)
		*(.fixup)
		*(.gnu.warning)
	} :text = 0
	_etext = .;	/* End of text section */

	EXCEPTION_TABLE(16)

	/* Exception table for data bus errors */
	__dbe_table : {
		__start___dbe_table = .;
		*(__dbe_table)
		__stop___dbe_table = .;
	}

#ifdef CONFIG_CAVIUM_OCTEON_SOC
#define NOTES_HEADER
#else /* CONFIG_CAVIUM_OCTEON_SOC */
#define NOTES_HEADER :note
#endif /* CONFIG_CAVIUM_OCTEON_SOC */
	NOTES :text NOTES_HEADER
	.dummy : { *(.dummy) } :text

	_sdata = .;			/* Start of data section */
	RODATA

	/* writeable */
	.data : {	/* Data */
		. = . + DATAOFFSET;		/* for CONFIG_MAPPED_KERNEL */

		INIT_TASK_DATA(THREAD_SIZE)
		NOSAVE_DATA
		CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
		READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
		DATA_DATA
		CONSTRUCTORS
	}
	_gp = . + 0x8000;
	.lit8 : {
		*(.lit8)
	}
	.lit4 : {
		*(.lit4)
	}
	/* We want the small data sections together, so single-instruction offsets
	   can access them all, and initialized data all before uninitialized, so
	   we can shorten the on-disk segment size.  */
	.sdata : {
		*(.sdata)
	}
	_edata =  .;			/* End of data section */

	/* will be freed after init */
	. = ALIGN(PAGE_SIZE);		/* Init code and data */
	__init_begin = .;
	INIT_TEXT_SECTION(PAGE_SIZE)
	INIT_DATA_SECTION(16)

	. = ALIGN(4);
	.mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
		__mips_machines_start = .;
		*(.mips.machines.init)
		__mips_machines_end = .;
	}

	/* .exit.text is discarded at runtime, not link time, to deal with
	 * references from .rodata
	 */
	.exit.text : {
		EXIT_TEXT
	}
	.exit.data : {
		EXIT_DATA
	}
#ifdef CONFIG_SMP
	PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
#endif
#ifdef CONFIG_MIPS_RAW_APPENDED_DTB
	__appended_dtb = .;
	/* leave space for appended DTB */
	. += 0x100000;
#elif defined(CONFIG_MIPS_ELF_APPENDED_DTB)
	.appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
		*(.appended_dtb)
		KEEP(*(.appended_dtb))
	}
#endif
	/*
	 * Align to 64K in attempt to eliminate holes before the
	 * .bss..swapper_pg_dir section at the start of .bss.  This
	 * also satisfies PAGE_SIZE alignment as the largest page size
	 * allowed is 64K.
	 */
	. = ALIGN(0x10000);
	__init_end = .;
	/* freed after init ends here */

	/*
	 * Force .bss to 64K alignment so that .bss..swapper_pg_dir
	 * gets that alignment.	 .sbss should be empty, so there will be
	 * no holes after __init_end. */
	BSS_SECTION(0, 0x10000, 0)

	_end = . ;

	/* These mark the ABI of the kernel for debuggers.  */
	.mdebug.abi32 : {
		KEEP(*(.mdebug.abi32))
	}
	.mdebug.abi64 : {
		KEEP(*(.mdebug.abi64))
	}

	/* This is the MIPS specific mdebug section.  */
	.mdebug : {
		*(.mdebug)
	}

	STABS_DEBUG
	DWARF_DEBUG

	/* These must appear regardless of  .  */
	.gptab.sdata : {
		*(.gptab.data)
		*(.gptab.sdata)
	}
	.gptab.sbss : {
		*(.gptab.bss)
		*(.gptab.sbss)
	}

	/* Sections to be discarded */
	DISCARDS
	/DISCARD/ : {
		/* ABI crap starts here */
		*(.MIPS.abiflags)
		*(.MIPS.options)
		*(.options)
		*(.pdr)
		*(.reginfo)
		*(.eh_frame)
	}
}