1 files changed, 70 insertions, 208 deletions

diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index fa25e4e425f6..d592a203f9c6 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -1,46 +1,19 @@
+/* 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>
  */
 
-#include <asm-generic/vmlinux.lds.h>
+#ifdef CONFIG_XIP_KERNEL
+#include "vmlinux-xip.lds.S"
+#else
+
+#include <linux/pgtable.h>
+#include <asm/vmlinux.lds.h>
 #include <asm/cache.h>
 #include <asm/thread_info.h>
-#include <asm/memory.h>
 #include <asm/page.h>
-	
-#define PROC_INFO							\
-	. = ALIGN(4);							\
-	VMLINUX_SYMBOL(__proc_info_begin) = .;				\
-	*(.proc.info.init)						\
-	VMLINUX_SYMBOL(__proc_info_end) = .;
-
-#define IDMAP_TEXT							\
-	ALIGN_FUNCTION();						\
-	VMLINUX_SYMBOL(__idmap_text_start) = .;				\
-	*(.idmap.text)							\
-	VMLINUX_SYMBOL(__idmap_text_end) = .;				\
-	. = ALIGN(32);							\
-	VMLINUX_SYMBOL(__hyp_idmap_text_start) = .;			\
-	*(.hyp.idmap.text)						\
-	VMLINUX_SYMBOL(__hyp_idmap_text_end) = .;
-
-#ifdef CONFIG_HOTPLUG_CPU
-#define ARM_CPU_DISCARD(x)
-#define ARM_CPU_KEEP(x)		x
-#else
-#define ARM_CPU_DISCARD(x)	x
-#define ARM_CPU_KEEP(x)
-#endif
-
-#if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
-	defined(CONFIG_GENERIC_BUG)
-#define ARM_EXIT_KEEP(x)	x
-#define ARM_EXIT_DISCARD(x)
-#else
-#define ARM_EXIT_KEEP(x)
-#define ARM_EXIT_DISCARD(x)	x
-#endif
+#include <asm/mpu.h>
 
 OUTPUT_ARCH(arm)
 ENTRY(stext)
@@ -63,92 +36,60 @@ SECTIONS
 	 * unwind sections get included.
 	 */
 	/DISCARD/ : {
-		*(.ARM.exidx.exit.text)
-		*(.ARM.extab.exit.text)
-		ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))
-		ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))
-		ARM_EXIT_DISCARD(EXIT_TEXT)
-		ARM_EXIT_DISCARD(EXIT_DATA)
-		EXIT_CALL
-#ifndef CONFIG_MMU
-		*(.fixup)
-		*(__ex_table)
-#endif
+		ARM_DISCARD
 #ifndef CONFIG_SMP_ON_UP
 		*(.alt.smp.init)
 #endif
-		*(.discard)
-		*(.discard.*)
+#ifndef CONFIG_ARM_UNWIND
+		*(.ARM.exidx) *(.ARM.exidx.*)
+		*(.ARM.extab) *(.ARM.extab.*)
+#endif
 	}
 
-#ifdef CONFIG_XIP_KERNEL
-	. = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);
-#else
-	. = PAGE_OFFSET + TEXT_OFFSET;
-#endif
+	. = KERNEL_OFFSET + TEXT_OFFSET;
 	.head.text : {
 		_text = .;
 		HEAD_TEXT
 	}
+
+#ifdef CONFIG_STRICT_KERNEL_RWX
+	. = ALIGN(1<<SECTION_SHIFT);
+#endif
+
+#ifdef CONFIG_ARM_MPU
+	. = ALIGN(PMSAv8_MINALIGN);
+#endif
 	.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
-			KPROBES_TEXT
-			IDMAP_TEXT
-#ifdef CONFIG_MMU
-			*(.fixup)
-#endif
-			*(.gnu.warning)
-			*(.glue_7)
-			*(.glue_7t)
-		. = ALIGN(4);
-		*(.got)			/* Global offset table		*/
-			ARM_CPU_KEEP(PROC_INFO)
+		ARM_TEXT
 	}
 
+#ifdef CONFIG_DEBUG_ALIGN_RODATA
+	. = ALIGN(1<<SECTION_SHIFT);
+#endif
+	_etext = .;			/* End of text section */
+
 	RO_DATA(PAGE_SIZE)
 
 	. = ALIGN(4);
 	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
 		__start___ex_table = .;
-#ifdef CONFIG_MMU
-		*(__ex_table)
-#endif
+		ARM_MMU_KEEP(*(__ex_table))
 		__stop___ex_table = .;
 	}
 
 #ifdef CONFIG_ARM_UNWIND
-	/*
-	 * Stack unwinding tables
-	 */
-	. = ALIGN(8);
-	.ARM.unwind_idx : {
-		__start_unwind_idx = .;
-		*(.ARM.exidx*)
-		__stop_unwind_idx = .;
-	}
-	.ARM.unwind_tab : {
-		__start_unwind_tab = .;
-		*(.ARM.extab*)
-		__stop_unwind_tab = .;
-	}
+	ARM_UNWIND_SECTIONS
 #endif
 
-	NOTES
-
-	_etext = .;			/* End of text and rodata section */
-
-#ifndef CONFIG_XIP_KERNEL
+#ifdef CONFIG_STRICT_KERNEL_RWX
+	. = ALIGN(1<<SECTION_SHIFT);
+#else
 	. = ALIGN(PAGE_SIZE);
-	__init_begin = .;
 #endif
+	__init_begin = .;
 
+	ARM_VECTORS
 	INIT_TEXT_SECTION(8)
 	.exit.text : {
 		ARM_EXIT_KEEP(EXIT_TEXT)
@@ -158,7 +99,7 @@ SECTIONS
 	}
 	.init.arch.info : {
 		__arch_info_begin = .;
-		*(.arch.info.init)
+		KEEP(*(.arch.info.init))
 		__arch_info_end = .;
 	}
 	.init.tagtable : {
@@ -175,144 +116,65 @@ SECTIONS
 #endif
 	.init.pv_table : {
 		__pv_table_begin = .;
-		*(.pv_table)
+		KEEP(*(.pv_table))
 		__pv_table_end = .;
 	}
-	.init.data : {
-#ifndef CONFIG_XIP_KERNEL
-		INIT_DATA
-#endif
-		INIT_SETUP(16)
-		INIT_CALLS
-		CON_INITCALL
-		SECURITY_INITCALL
-		INIT_RAM_FS
-	}
-#ifndef CONFIG_XIP_KERNEL
+
+	INIT_DATA_SECTION(16)
+
 	.exit.data : {
 		ARM_EXIT_KEEP(EXIT_DATA)
 	}
-#endif
 
 #ifdef CONFIG_SMP
 	PERCPU_SECTION(L1_CACHE_BYTES)
 #endif
 
-#ifdef CONFIG_XIP_KERNEL
-	__data_loc = ALIGN(4);		/* location in binary */
-	. = PAGE_OFFSET + TEXT_OFFSET;
-#else
-	__init_end = .;
-	. = ALIGN(THREAD_SIZE);
-	__data_loc = .;
+#ifdef CONFIG_HAVE_TCM
+	ARM_TCM
 #endif
 
-	.data : AT(__data_loc) {
-		_data = .;		/* address in memory */
-		_sdata = .;
-
-		/*
-		 * first, the init task union, aligned
-		 * to an 8192 byte boundary.
-		 */
-		INIT_TASK_DATA(THREAD_SIZE)
-
-#ifdef CONFIG_XIP_KERNEL
-		. = ALIGN(PAGE_SIZE);
-		__init_begin = .;
-		INIT_DATA
-		ARM_EXIT_KEEP(EXIT_DATA)
-		. = ALIGN(PAGE_SIZE);
-		__init_end = .;
+#ifdef CONFIG_STRICT_KERNEL_RWX
+	. = ALIGN(1<<SECTION_SHIFT);
+#else
+	. = ALIGN(THREAD_ALIGN);
 #endif
+	__init_end = .;
 
-		NOSAVE_DATA
-		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
-		READ_MOSTLY_DATA(L1_CACHE_BYTES)
-
-		/*
-		 * and the usual data section
-		 */
-		DATA_DATA
-		CONSTRUCTORS
-
-		_edata = .;
-	}
-	_edata_loc = __data_loc + SIZEOF(.data);
-
-#ifdef CONFIG_HAVE_TCM
-        /*
-	 * We align everything to a page boundary so we can
-	 * free it after init has commenced and TCM contents have
-	 * been copied to its destination.
-	 */
-	.tcm_start : {
-		. = ALIGN(PAGE_SIZE);
-		__tcm_start = .;
-		__itcm_start = .;
-	}
-
-	/*
-	 * Link these to the ITCM RAM
-	 * Put VMA to the TCM address and LMA to the common RAM
-	 * and we'll upload the contents from RAM to TCM and free
-	 * the used RAM after that.
-	 */
-	.text_itcm ITCM_OFFSET : AT(__itcm_start)
-	{
-		__sitcm_text = .;
-		*(.tcm.text)
-		*(.tcm.rodata)
-		. = ALIGN(4);
-		__eitcm_text = .;
-	}
-
-	/*
-	 * Reset the dot pointer, this is needed to create the
-	 * relative __dtcm_start below (to be used as extern in code).
-	 */
-	. = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm);
-
-	.dtcm_start : {
-		__dtcm_start = .;
-	}
-
-	/* TODO: add remainder of ITCM as well, that can be used for data! */
-	.data_dtcm DTCM_OFFSET : AT(__dtcm_start)
-	{
-		. = ALIGN(4);
-		__sdtcm_data = .;
-		*(.tcm.data)
-		. = ALIGN(4);
-		__edtcm_data = .;
-	}
-
-	/* Reset the dot pointer or the linker gets confused */
-	. = ADDR(.dtcm_start) + SIZEOF(.data_dtcm);
-
-	/* End marker for freeing TCM copy in linked object */
-	.tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){
-		. = ALIGN(PAGE_SIZE);
-		__tcm_end = .;
-	}
-#endif
+	_sdata = .;
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_ALIGN)
+	_edata = .;
 
 	BSS_SECTION(0, 0, 0)
+#ifdef CONFIG_ARM_MPU
+	. = ALIGN(PMSAv8_MINALIGN);
+#endif
 	_end = .;
 
 	STABS_DEBUG
-	.comment 0 : { *(.comment) }
+	DWARF_DEBUG
+	ARM_DETAILS
+
+	ARM_ASSERTS
 }
 
+#ifdef CONFIG_STRICT_KERNEL_RWX
+/*
+ * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will
+ * be the first section-aligned location after __start_rodata. Otherwise,
+ * it will be equal to __start_rodata.
+ */
+__start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT);
+#endif
+
 /*
  * These must never be empty
  * If you have to comment these two assert statements out, your
  * binutils is too old (for other reasons as well)
  */
 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
+#ifndef CONFIG_COMPILE_TEST
 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
-/*
- * The HYP init code can't be more than a page long.
- * The above comment applies as well.
- */
-ASSERT(((__hyp_idmap_text_end - __hyp_idmap_text_start) <= PAGE_SIZE), "HYP init code too big")
+#endif
+
+#endif /* CONFIG_XIP_KERNEL */