xref: /openbmc/linux/arch/arm64/kernel/vmlinux.lds.S (revision 31b90347)
1/*
2 * ld script to make ARM Linux kernel
3 * taken from the i386 version by Russell King
4 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
5 */
6
7#include <asm-generic/vmlinux.lds.h>
8#include <asm/thread_info.h>
9#include <asm/memory.h>
10#include <asm/page.h>
11
12#define ARM_EXIT_KEEP(x)
13#define ARM_EXIT_DISCARD(x)	x
14
15OUTPUT_ARCH(aarch64)
16ENTRY(stext)
17
18jiffies = jiffies_64;
19
20#define HYPERVISOR_TEXT					\
21	/*						\
22	 * Force the alignment to be compatible with	\
23	 * the vectors requirements			\
24	 */						\
25	. = ALIGN(2048);				\
26	VMLINUX_SYMBOL(__hyp_idmap_text_start) = .;	\
27	*(.hyp.idmap.text)				\
28	VMLINUX_SYMBOL(__hyp_idmap_text_end) = .;	\
29	VMLINUX_SYMBOL(__hyp_text_start) = .;		\
30	*(.hyp.text)					\
31	VMLINUX_SYMBOL(__hyp_text_end) = .;
32
33SECTIONS
34{
35	/*
36	 * XXX: The linker does not define how output sections are
37	 * assigned to input sections when there are multiple statements
38	 * matching the same input section name.  There is no documented
39	 * order of matching.
40	 */
41	/DISCARD/ : {
42		ARM_EXIT_DISCARD(EXIT_TEXT)
43		ARM_EXIT_DISCARD(EXIT_DATA)
44		EXIT_CALL
45		*(.discard)
46		*(.discard.*)
47	}
48
49	. = PAGE_OFFSET + TEXT_OFFSET;
50
51	.head.text : {
52		_text = .;
53		HEAD_TEXT
54	}
55	.text : {			/* Real text segment		*/
56		_stext = .;		/* Text and read-only data	*/
57			__exception_text_start = .;
58			*(.exception.text)
59			__exception_text_end = .;
60			IRQENTRY_TEXT
61			TEXT_TEXT
62			SCHED_TEXT
63			LOCK_TEXT
64			HYPERVISOR_TEXT
65			*(.fixup)
66			*(.gnu.warning)
67		. = ALIGN(16);
68		*(.got)			/* Global offset table		*/
69	}
70
71	RO_DATA(PAGE_SIZE)
72	EXCEPTION_TABLE(8)
73	NOTES
74	_etext = .;			/* End of text and rodata section */
75
76	. = ALIGN(PAGE_SIZE);
77	__init_begin = .;
78
79	INIT_TEXT_SECTION(8)
80	.exit.text : {
81		ARM_EXIT_KEEP(EXIT_TEXT)
82	}
83	. = ALIGN(16);
84	.init.data : {
85		INIT_DATA
86		INIT_SETUP(16)
87		INIT_CALLS
88		CON_INITCALL
89		SECURITY_INITCALL
90		INIT_RAM_FS
91	}
92	.exit.data : {
93		ARM_EXIT_KEEP(EXIT_DATA)
94	}
95
96	PERCPU_SECTION(64)
97
98	__init_end = .;
99
100	. = ALIGN(PAGE_SIZE);
101	_data = .;
102	__data_loc = _data - LOAD_OFFSET;
103	_sdata = .;
104	RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE)
105	_edata = .;
106	_edata_loc = __data_loc + SIZEOF(.data);
107
108	BSS_SECTION(0, 0, 0)
109	_end = .;
110
111	STABS_DEBUG
112	.comment 0 : { *(.comment) }
113}
114
115/*
116 * The HYP init code can't be more than a page long.
117 */
118ASSERT(((__hyp_idmap_text_start + PAGE_SIZE) > __hyp_idmap_text_end),
119       "HYP init code too big")
120