/* SPDX-License-Identifier: GPL-2.0 *//* * 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> */ #define RO_EXCEPTION_TABLE_ALIGN	8 #include <asm-generic/vmlinux.lds.h>#include <asm/cache.h>#include <asm/kernel-pgtable.h>#include <asm/memory.h>#include <asm/page.h> #include "image.h" OUTPUT_ARCH(aarch64)ENTRY(_text) jiffies = jiffies_64; #define HYPERVISOR_TEXT					\	/*						\	 * Align to 4 KB so that			\	 * a) the HYP vector table is at its minimum	\	 *    alignment of 2048 bytes			\	 * b) the HYP init code will not cross a page	\	 *    boundary if its size does not exceed	\	 *    4 KB (see related ASSERT() below)		\	 */						\	. = ALIGN(SZ_4K);				\	__hyp_idmap_text_start = .;			\	*(.hyp.idmap.text)				\	__hyp_idmap_text_end = .;			\	__hyp_text_start = .;				\	*(.hyp.text)					\	__hyp_text_end = .; #define IDMAP_TEXT					\	. = ALIGN(SZ_4K);				\	__idmap_text_start = .;				\	*(.idmap.text)					\	__idmap_text_end = .; #ifdef CONFIG_HIBERNATION#define HIBERNATE_TEXT					\	. = ALIGN(SZ_4K);				\	__hibernate_exit_text_start = .;		\	*(.hibernate_exit.text)				\	__hibernate_exit_text_end = .;#else#define HIBERNATE_TEXT#endif #ifdef CONFIG_UNMAP_KERNEL_AT_EL0#define TRAMP_TEXT					\	. = ALIGN(PAGE_SIZE);				\	__entry_tramp_text_start = .;			\	*(.entry.tramp.text)				\	. = ALIGN(PAGE_SIZE);				\	__entry_tramp_text_end = .;#else#define TRAMP_TEXT#endif /* * 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/ : {		EXIT_CALL		*(.discard)		*(.discard.*)		*(.interp .dynamic)		*(.dynsym .dynstr .hash .gnu.hash)		*(.eh_frame)	} 	. = KIMAGE_VADDR + TEXT_OFFSET; 	.head.text : {		_text = .;		HEAD_TEXT	}	.text : {			/* Real text segment		*/		_stext = .;		/* Text and read-only data	*/			IRQENTRY_TEXT			SOFTIRQENTRY_TEXT			ENTRY_TEXT			TEXT_TEXT			SCHED_TEXT			CPUIDLE_TEXT			LOCK_TEXT			KPROBES_TEXT			HYPERVISOR_TEXT			IDMAP_TEXT			HIBERNATE_TEXT			TRAMP_TEXT			*(.fixup)			*(.gnu.warning)		. = ALIGN(16);		*(.got)			/* Global offset table		*/	} 	. = ALIGN(SEGMENT_ALIGN);	_etext = .;			/* End of text section */ 	/* everything from this point to __init_begin will be marked RO NX */	RO_DATA(PAGE_SIZE) 	idmap_pg_dir = .;	. += IDMAP_DIR_SIZE;	idmap_pg_end = .; #ifdef CONFIG_UNMAP_KERNEL_AT_EL0	tramp_pg_dir = .;	. += PAGE_SIZE;#endif #ifdef CONFIG_ARM64_SW_TTBR0_PAN	reserved_ttbr0 = .;	. += RESERVED_TTBR0_SIZE;#endif	swapper_pg_dir = .;	. += PAGE_SIZE;	swapper_pg_end = .; 	. = ALIGN(SEGMENT_ALIGN);	__init_begin = .;	__inittext_begin = .; 	INIT_TEXT_SECTION(8) 	__exittext_begin = .;	.exit.text : {		EXIT_TEXT	}	__exittext_end = .; 	. = ALIGN(4);	.altinstructions : {		__alt_instructions = .;		*(.altinstructions)		__alt_instructions_end = .;	} 	. = ALIGN(SEGMENT_ALIGN);	__inittext_end = .;	__initdata_begin = .; 	.init.data : {		INIT_DATA		INIT_SETUP(16)		INIT_CALLS		CON_INITCALL		INIT_RAM_FS		*(.init.rodata.* .init.bss)	/* from the EFI stub */	}	.exit.data : {		EXIT_DATA	} 	PERCPU_SECTION(L1_CACHE_BYTES) 	.rela.dyn : ALIGN(8) {		*(.rela .rela*)	} 	__rela_offset	= ABSOLUTE(ADDR(.rela.dyn) - KIMAGE_VADDR);	__rela_size	= SIZEOF(.rela.dyn); #ifdef CONFIG_RELR	.relr.dyn : ALIGN(8) {		*(.relr.dyn)	} 	__relr_offset	= ABSOLUTE(ADDR(.relr.dyn) - KIMAGE_VADDR);	__relr_size	= SIZEOF(.relr.dyn);#endif 	. = ALIGN(SEGMENT_ALIGN);	__initdata_end = .;	__init_end = .; 	_data = .;	_sdata = .;	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_ALIGN) 	/*	 * Data written with the MMU off but read with the MMU on requires	 * cache lines to be invalidated, discarding up to a Cache Writeback	 * Granule (CWG) of data from the cache. Keep the section that	 * requires this type of maintenance to be in its own Cache Writeback	 * Granule (CWG) area so the cache maintenance operations don't	 * interfere with adjacent data.	 */	.mmuoff.data.write : ALIGN(SZ_2K) {		__mmuoff_data_start = .;		*(.mmuoff.data.write)	}	. = ALIGN(SZ_2K);	.mmuoff.data.read : {		*(.mmuoff.data.read)		__mmuoff_data_end = .;	} 	PECOFF_EDATA_PADDING	__pecoff_data_rawsize = ABSOLUTE(. - __initdata_begin);	_edata = .; 	BSS_SECTION(0, 0, 0) 	. = ALIGN(PAGE_SIZE);	init_pg_dir = .;	. += INIT_DIR_SIZE;	init_pg_end = .; 	. = ALIGN(SEGMENT_ALIGN);	__pecoff_data_size = ABSOLUTE(. - __initdata_begin);	_end = .; 	STABS_DEBUG 	HEAD_SYMBOLS} #include "image-vars.h" /* * The HYP init code and ID map text can't be longer than a page each, * and should not cross a page boundary. */ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & ~(SZ_4K - 1)) <= SZ_4K,	"HYP init code too big or misaligned")ASSERT(__idmap_text_end - (__idmap_text_start & ~(SZ_4K - 1)) <= SZ_4K,	"ID map text too big or misaligned")#ifdef CONFIG_HIBERNATIONASSERT(__hibernate_exit_text_end - (__hibernate_exit_text_start & ~(SZ_4K - 1))	<= SZ_4K, "Hibernate exit text too big or misaligned")#endif#ifdef CONFIG_UNMAP_KERNEL_AT_EL0ASSERT((__entry_tramp_text_end - __entry_tramp_text_start) == PAGE_SIZE,	"Entry trampoline text too big")#endif/* * If padding is applied before .head.text, virt<->phys conversions will fail. */ASSERT(_text == (KIMAGE_VADDR + TEXT_OFFSET), "HEAD is misaligned")