--- zzzz-none-000/linux-3.10.107/arch/arm/kernel/head-common.S	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/arm/kernel/head-common.S	2021-02-04 17:41:59.000000000 +0000
@@ -10,6 +10,7 @@
  * published by the Free Software Foundation.
  *
  */
+#include <asm/assembler.h>
 
 #define ATAG_CORE 0x54410001
 #define ATAG_CORE_SIZE ((2*4 + 3*4) >> 2)
@@ -61,10 +62,10 @@
 	cmp	r5, r6
 	bne	1f
 
-2:	mov	pc, lr				@ atag/dtb pointer is ok
+2:	ret	lr				@ atag/dtb pointer is ok
 
 1:	mov	r2, #0
-	mov	pc, lr
+	ret	lr
 ENDPROC(__vet_atags)
 
 /*
@@ -99,8 +100,10 @@
 	str	r1, [r5]			@ Save machine type
 	str	r2, [r6]			@ Save atags pointer
 	cmp	r7, #0
-	bicne	r4, r0, #CR_A			@ Clear 'A' bit
-	stmneia	r7, {r0, r4}			@ Save control register values
+	strne	r0, [r7]			@ Save control register values
+#ifdef CONFIG_KASAN
+	b	kasan_early_init
+#endif
 	b	start_kernel
 ENDPROC(__mmap_switched)
 
@@ -133,6 +136,9 @@
 	ldmfd	sp!, {r4 - r6, r9, pc}
 ENDPROC(lookup_processor_type)
 
+	__FINIT
+	.text
+
 /*
  * Read processor ID register (CP#15, CR0), and look up in the linker-built
  * supported processor list.  Note that we can't use the absolute addresses
@@ -146,7 +152,6 @@
  *	r5 = proc_info pointer in physical address space
  *	r9 = cpuid (preserved)
  */
-	__CPUINIT
 __lookup_processor_type:
 	adr	r3, __lookup_processor_type_data
 	ldmia	r3, {r4 - r6}
@@ -161,7 +166,7 @@
 	cmp	r5, r6
 	blo	1b
 	mov	r5, #0				@ unknown processor
-2:	mov	pc, lr
+2:	ret	lr
 ENDPROC(__lookup_processor_type)
 
 /*
@@ -175,6 +180,18 @@
 	.long	__proc_info_end
 	.size	__lookup_processor_type_data, . - __lookup_processor_type_data
 
+__error_lpae:
+#ifdef CONFIG_DEBUG_LL
+	adr	r0, str_lpae
+	bl 	printascii
+	b	__error
+str_lpae: .asciz "\nError: Kernel with LPAE support, but CPU does not support LPAE.\n"
+#else
+	b	__error
+#endif
+	.align
+ENDPROC(__error_lpae)
+
 __error_p:
 #ifdef CONFIG_DEBUG_LL
 	adr	r0, str_p1