xref: /openbmc/linux/arch/s390/kernel/vmlinux.lds.S (revision 2d96b44f) 
1/* ld script to make s390 Linux kernel
2 * Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
3 */
4
5#include <asm/thread_info.h>
6#include <asm/page.h>
7
8/*
9 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
10 * make sure it has 16k alignment.
11 */
12#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
13
14/* Handle ro_after_init data on our own. */
15#define RO_AFTER_INIT_DATA
16
17#include <asm-generic/vmlinux.lds.h>
18
19OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
20OUTPUT_ARCH(s390:64-bit)
21ENTRY(startup)
22jiffies = jiffies_64;
23
24PHDRS {
25	text PT_LOAD FLAGS(5);	/* R_E */
26	data PT_LOAD FLAGS(7);	/* RWE */
27	note PT_NOTE FLAGS(0);	/* ___ */
28}
29
30SECTIONS
31{
32	. = 0x00000000;
33	.text : {
34	_text = .;		/* Text and read-only data */
35		HEAD_TEXT
36		TEXT_TEXT
37		SCHED_TEXT
38		CPUIDLE_TEXT
39		LOCK_TEXT
40		KPROBES_TEXT
41		IRQENTRY_TEXT
42		SOFTIRQENTRY_TEXT
43		*(.fixup)
44		*(.gnu.warning)
45	} :text = 0x0700
46
47	_etext = .;		/* End of text section */
48
49	NOTES :text :note
50
51	.dummy : { *(.dummy) } :data
52
53	RO_DATA_SECTION(PAGE_SIZE)
54
55#ifdef CONFIG_SHARED_KERNEL
56	. = ALIGN(0x100000);	/* VM shared segments are 1MB aligned */
57#endif
58
59	. = ALIGN(PAGE_SIZE);
60	_eshared = .;		/* End of shareable data */
61	_sdata = .;		/* Start of data section */
62
63	. = ALIGN(PAGE_SIZE);
64	__start_ro_after_init = .;
65	.data..ro_after_init : {
66		 *(.data..ro_after_init)
67	}
68	EXCEPTION_TABLE(16)
69	. = ALIGN(PAGE_SIZE);
70	__end_ro_after_init = .;
71
72	RW_DATA_SECTION(0x100, PAGE_SIZE, THREAD_SIZE)
73
74	_edata = .;		/* End of data section */
75
76	/* will be freed after init */
77	. = ALIGN(PAGE_SIZE);	/* Init code and data */
78	__init_begin = .;
79
80	INIT_TEXT_SECTION(PAGE_SIZE)
81
82	/*
83	 * .exit.text is discarded at runtime, not link time,
84	 * to deal with references from __bug_table
85	*/
86	.exit.text : {
87		EXIT_TEXT
88	}
89
90	.exit.data : {
91		EXIT_DATA
92	}
93
94	/* early.c uses stsi, which requires page aligned data. */
95	. = ALIGN(PAGE_SIZE);
96	INIT_DATA_SECTION(0x100)
97
98	PERCPU_SECTION(0x100)
99	. = ALIGN(PAGE_SIZE);
100	__init_end = .;		/* freed after init ends here */
101
102	BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
103
104	_end = . ;
105
106	/* Debugging sections.	*/
107	STABS_DEBUG
108	DWARF_DEBUG
109
110	/* Sections to be discarded */
111	DISCARDS
112}
113