summaryrefslogtreecommitdiffstats
path: root/arch/s390/boot/vmlinux.lds.S
blob: 1fe5a1d3ff60d6f39887bd545677eea28afbe5d1 (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
/* SPDX-License-Identifier: GPL-2.0 */
#include <asm-generic/vmlinux.lds.h>
#include <asm/vmlinux.lds.h>
#include <asm/thread_info.h>
#include <asm/page.h>
#include <asm/sclp.h>
#include "boot.h"

OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
OUTPUT_ARCH(s390:64-bit)

ENTRY(startup)

SECTIONS
{
	. = 0;
	.ipldata : {
		*(.ipldata)
	}
	. = IPL_START;
	.head.text : {
		_head = . ;
		HEAD_TEXT
		_ehead = . ;
	}
	. = PARMAREA;
	.parmarea : {
		*(.parmarea)
	}
	.text :	{
		_text = .;	/* Text */
		*(.text)
		*(.text.*)
		INIT_TEXT
		_etext = . ;
	}
	.rodata : {
		_rodata = . ;
		*(.rodata)	 /* read-only data */
		*(.rodata.*)
		_erodata = . ;
	}
	.got : {
		*(.got)
	}
	NOTES
	.data :	{
		_data = . ;
		*(.data)
		*(.data.*)
		_edata = . ;
	}

	BOOT_DATA
	BOOT_DATA_PRESERVED

	/*
	 * This is the BSS section of the decompressor and not of the decompressed Linux kernel.
	 * It will consume place in the decompressor's image.
	 */
	. = ALIGN(8);
	.bss : {
		_bss = . ;
		*(.bss)
		*(.bss.*)
		*(COMMON)
		/*
		 * Stacks for the decompressor
		 */
		. = ALIGN(PAGE_SIZE);
		_dump_info_stack_start = .;
		. += PAGE_SIZE;
		_dump_info_stack_end = .;
		. = ALIGN(PAGE_SIZE);
		_stack_start = .;
		. += BOOT_STACK_SIZE;
		_stack_end = .;
		_ebss = .;
	}

	/*
	 * uncompressed image info used by the decompressor it should match
	 * struct vmlinux_info. It comes from .vmlinux.info section of
	 * uncompressed vmlinux in a form of info.o
	 */
	. = ALIGN(8);
	.vmlinux.info : {
		_vmlinux_info = .;
		*(.vmlinux.info)
	}

	.decompressor.syms : {
		. += 1; /* make sure we have \0 before the first entry */
		. = ALIGN(2);
		_decompressor_syms_start = .;
		*(.decompressor.syms)
		_decompressor_syms_end = .;
	}

	_decompressor_end = .;

	. = ALIGN(4);
	.vmlinux.relocs : {
		__vmlinux_relocs_64_start = .;
		*(.vmlinux.relocs_64)
		__vmlinux_relocs_64_end = .;
	}

#ifdef CONFIG_KERNEL_UNCOMPRESSED
	. = ALIGN(PAGE_SIZE);
	. += AMODE31_SIZE;		/* .amode31 section */
#else
	. = ALIGN(8);
#endif
	.rodata.compressed : {
		_compressed_start = .;
		*(.vmlinux.bin.compressed)
		_compressed_end = .;
	}

#define SB_TRAILER_SIZE 32
	/* Trailer needed for Secure Boot */
	. += SB_TRAILER_SIZE; /* make sure .sb.trailer does not overwrite the previous section */
	. = ALIGN(4096) - SB_TRAILER_SIZE;
	.sb.trailer : {
		QUAD(0)
		QUAD(0)
		QUAD(0)
		QUAD(0x000000207a49504c)
	}
	_end = .;

	DWARF_DEBUG
	ELF_DETAILS

	/*
	 * Make sure that the .got.plt is either completely empty or it
	 * contains only the three reserved double words.
	 */
	.got.plt : {
		*(.got.plt)
	}
	ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0x18, "Unexpected GOT/PLT entries detected!")

	/*
	 * Sections that should stay zero sized, which is safer to
	 * explicitly check instead of blindly discarding.
	 */
	.plt : {
		*(.plt) *(.plt.*) *(.iplt) *(.igot .igot.plt)
	}
	ASSERT(SIZEOF(.plt) == 0, "Unexpected run-time procedure linkages detected!")
	.rela.dyn : {
		*(.rela.*) *(.rela_*)
	}
	ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!")

	/* Sections to be discarded */
	/DISCARD/ : {
		COMMON_DISCARDS
		*(.eh_frame)
		*(__ex_table)
		*(*__ksymtab*)
		*(___kcrctab*)
	}
}