[mirror_ubuntu-jammy-kernel.git] / arch / arm64 / kernel / vmlinux.lds.S

/*
 * ld script to make ARM Linux kernel
 * taken from the i386 version by Russell King
 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
 */

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

#include "image.h"

#define ARM_EXIT_KEEP(x)
#define ARM_EXIT_DISCARD(x)	x

OUTPUT_ARCH(aarch64)
ENTRY(_text)

jiffies = jiffies_64;

#define HYPERVISOR_TEXT					\
	/*						\
	 * Force the alignment to be compatible with	\
	 * the vectors requirements			\
	 */						\
	. = ALIGN(2048);				\
	VMLINUX_SYMBOL(__hyp_idmap_text_start) = .;	\
	*(.hyp.idmap.text)				\
	VMLINUX_SYMBOL(__hyp_idmap_text_end) = .;	\
	VMLINUX_SYMBOL(__hyp_text_start) = .;		\
	*(.hyp.text)					\
	VMLINUX_SYMBOL(__hyp_text_end) = .;

/*
 * The size of the PE/COFF section that covers the kernel image, which
 * runs from stext to _edata, must be a round multiple of the PE/COFF
 * FileAlignment, which we set to its minimum value of 0x200. 'stext'
 * itself is 4 KB aligned, so padding out _edata to a 0x200 aligned
 * boundary should be sufficient.
 */
PECOFF_FILE_ALIGNMENT = 0x200;

#ifdef CONFIG_EFI
#define PECOFF_EDATA_PADDING	\
	.pecoff_edata_padding : { BYTE(0); . = ALIGN(PECOFF_FILE_ALIGNMENT); }
#else
#define PECOFF_EDATA_PADDING
#endif

SECTIONS
{
	/*
	 * XXX: The linker does not define how output sections are
	 * assigned to input sections when there are multiple statements
	 * matching the same input section name.  There is no documented
	 * order of matching.
	 */
	/DISCARD/ : {
		ARM_EXIT_DISCARD(EXIT_TEXT)
		ARM_EXIT_DISCARD(EXIT_DATA)
		EXIT_CALL
		*(.discard)
		*(.discard.*)
	}

	. = PAGE_OFFSET + TEXT_OFFSET;

	.head.text : {
		_text = .;
		HEAD_TEXT
	}
	.text : {			/* Real text segment		*/
		_stext = .;		/* Text and read-only data	*/
			__exception_text_start = .;
			*(.exception.text)
			__exception_text_end = .;
			IRQENTRY_TEXT
			TEXT_TEXT
			SCHED_TEXT
			LOCK_TEXT
			HYPERVISOR_TEXT
			*(.fixup)
			*(.gnu.warning)
		. = ALIGN(16);
		*(.got)			/* Global offset table		*/
	}

	RO_DATA(PAGE_SIZE)
	EXCEPTION_TABLE(8)
	NOTES
	_etext = .;			/* End of text and rodata section */

	. = ALIGN(PAGE_SIZE);
	__init_begin = .;

	INIT_TEXT_SECTION(8)
	.exit.text : {
		ARM_EXIT_KEEP(EXIT_TEXT)
	}
	. = ALIGN(16);
	.init.data : {
		INIT_DATA
		INIT_SETUP(16)
		INIT_CALLS
		CON_INITCALL
		SECURITY_INITCALL
		INIT_RAM_FS
	}
	.exit.data : {
		ARM_EXIT_KEEP(EXIT_DATA)
	}

	PERCPU_SECTION(64)

	. = ALIGN(PAGE_SIZE);
	__init_end = .;

	. = ALIGN(4);
	.altinstructions : {
		__alt_instructions = .;
		*(.altinstructions)
		__alt_instructions_end = .;
	}
	.altinstr_replacement : {
		*(.altinstr_replacement)
	}

	. = ALIGN(PAGE_SIZE);
	_data = .;
	_sdata = .;
	RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE)
	PECOFF_EDATA_PADDING
	_edata = .;

	BSS_SECTION(0, 0, 0)

	. = ALIGN(PAGE_SIZE);
	idmap_pg_dir = .;
	. += IDMAP_DIR_SIZE;
	swapper_pg_dir = .;
	. += SWAPPER_DIR_SIZE;

	_end = .;

	STABS_DEBUG

	HEAD_SYMBOLS
}

/*
 * The HYP init code can't be more than a page long.
 */
ASSERT(((__hyp_idmap_text_start + PAGE_SIZE) > __hyp_idmap_text_end),
       "HYP init code too big")

/*
 * If padding is applied before .head.text, virt<->phys conversions will fail.
 */
ASSERT(_text == (PAGE_OFFSET + TEXT_OFFSET), "HEAD is misaligned")
Commit	Line	Data
8c2c3df3 CM	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
a2c1d73b MR	12	#include "image.h"
a2c1d73b MR	13
8c2c3df3 CM	14	#define ARM_EXIT_KEEP(x)
	15	#define ARM_EXIT_DISCARD(x) x
	16
	17	OUTPUT_ARCH(aarch64)
af885f40	18	ENTRY(_text)
8c2c3df3 CM	19
	20	jiffies = jiffies_64;
	21
2240bbb6 MZ	22	#define HYPERVISOR_TEXT \
	23	/* \
	24	* Force the alignment to be compatible with \
	25	* the vectors requirements \
	26	*/ \
	27	. = ALIGN(2048); \
	28	VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \
	29	*(.hyp.idmap.text) \
	30	VMLINUX_SYMBOL(__hyp_idmap_text_end) = .; \
	31	VMLINUX_SYMBOL(__hyp_text_start) = .; \
	32	*(.hyp.text) \
	33	VMLINUX_SYMBOL(__hyp_text_end) = .;
	34
a352ea3e AB	35	/*
	36	* The size of the PE/COFF section that covers the kernel image, which
	37	* runs from stext to _edata, must be a round multiple of the PE/COFF
	38	* FileAlignment, which we set to its minimum value of 0x200. 'stext'
	39	* itself is 4 KB aligned, so padding out _edata to a 0x200 aligned
	40	* boundary should be sufficient.
	41	*/
	42	PECOFF_FILE_ALIGNMENT = 0x200;
	43
	44	#ifdef CONFIG_EFI
	45	#define PECOFF_EDATA_PADDING \
	46	.pecoff_edata_padding : { BYTE(0); . = ALIGN(PECOFF_FILE_ALIGNMENT); }
	47	#else
	48	#define PECOFF_EDATA_PADDING
	49	#endif
	50
8c2c3df3 CM	51	SECTIONS
	52	{
	53	/*
	54	* XXX: The linker does not define how output sections are
	55	* assigned to input sections when there are multiple statements
	56	* matching the same input section name. There is no documented
	57	* order of matching.
	58	*/
	59	/DISCARD/ : {
	60	ARM_EXIT_DISCARD(EXIT_TEXT)
	61	ARM_EXIT_DISCARD(EXIT_DATA)
	62	EXIT_CALL
	63	*(.discard)
	64	(.discard.)
	65	}
	66
	67	. = PAGE_OFFSET + TEXT_OFFSET;
	68
	69	.head.text : {
	70	_text = .;
	71	HEAD_TEXT
	72	}
	73	.text : { /* Real text segment */
	74	_stext = .; /* Text and read-only data */
8c2c3df3 CM	75	__exception_text_start = .;
	76	*(.exception.text)
	77	__exception_text_end = .;
	78	IRQENTRY_TEXT
	79	TEXT_TEXT
	80	SCHED_TEXT
	81	LOCK_TEXT
2240bbb6	82	HYPERVISOR_TEXT
8c2c3df3 CM	83	*(.fixup)
	84	*(.gnu.warning)
	85	. = ALIGN(16);
	86	(.got) / Global offset table */
	87	}
	88
	89	RO_DATA(PAGE_SIZE)
adace895	90	EXCEPTION_TABLE(8)
c80b7ee8	91	NOTES
8c2c3df3 CM	92	_etext = .; /* End of text and rodata section */
	93
	94	. = ALIGN(PAGE_SIZE);
	95	__init_begin = .;
	96
	97	INIT_TEXT_SECTION(8)
	98	.exit.text : {
	99	ARM_EXIT_KEEP(EXIT_TEXT)
	100	}
	101	. = ALIGN(16);
	102	.init.data : {
	103	INIT_DATA
	104	INIT_SETUP(16)
	105	INIT_CALLS
	106	CON_INITCALL
	107	SECURITY_INITCALL
	108	INIT_RAM_FS
	109	}
	110	.exit.data : {
	111	ARM_EXIT_KEEP(EXIT_DATA)
	112	}
	113
	114	PERCPU_SECTION(64)
	115
562c85ca	116	. = ALIGN(PAGE_SIZE);
8c2c3df3	117	__init_end = .;
3c620626	118
e039ee4e AP	119	. = ALIGN(4);
	120	.altinstructions : {
	121	__alt_instructions = .;
	122	*(.altinstructions)
	123	__alt_instructions_end = .;
	124	}
	125	.altinstr_replacement : {
	126	*(.altinstr_replacement)
	127	}
	128
	129	. = ALIGN(PAGE_SIZE);
3c620626	130	_data = .;
3c620626 MS	131	_sdata = .;
3c620626 MS	132	RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE)
a352ea3e	133	PECOFF_EDATA_PADDING
3c620626	134	_edata = .;
8c2c3df3	135
8c2c3df3	136	BSS_SECTION(0, 0, 0)
bd00cd5f MR	137
	138	. = ALIGN(PAGE_SIZE);
	139	idmap_pg_dir = .;
	140	. += IDMAP_DIR_SIZE;
	141	swapper_pg_dir = .;
	142	. += SWAPPER_DIR_SIZE;
	143
8c2c3df3 CM	144	_end = .;
	145
	146	STABS_DEBUG
a2c1d73b MR	147
a2c1d73b MR	148	HEAD_SYMBOLS
8c2c3df3	149	}
2240bbb6 MZ	150
	151	/*
	152	* The HYP init code can't be more than a page long.
	153	*/
	154	ASSERT(((__hyp_idmap_text_start + PAGE_SIZE) > __hyp_idmap_text_end),
	155	"HYP init code too big")
da57a369 MR	156
	157	/*
	158	* If padding is applied before .head.text, virt<->phys conversions will fail.
	159	*/
	160	ASSERT(_text == (PAGE_OFFSET + TEXT_OFFSET), "HEAD is misaligned")