1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_KASAN_H
3 #define __ASM_KASAN_H
4 
5 #ifndef __ASSEMBLY__
6 
7 #ifdef CONFIG_KASAN
8 
9 #include <linux/kernel.h>
10 #include <linux/sizes.h>
11 #include <asm/kmem_layout.h>
12 
13 #define KASAN_SHADOW_SCALE_SHIFT 3
14 
15 /* Start of area covered by KASAN */
16 #define KASAN_START_VADDR __XTENSA_UL_CONST(0x90000000)
17 /* Start of the shadow map */
18 #define KASAN_SHADOW_START (XCHAL_PAGE_TABLE_VADDR + XCHAL_PAGE_TABLE_SIZE)
19 /* Size of the shadow map */
20 #define KASAN_SHADOW_SIZE (-KASAN_START_VADDR >> KASAN_SHADOW_SCALE_SHIFT)
21 /* Offset for mem to shadow address transformation */
22 #define KASAN_SHADOW_OFFSET __XTENSA_UL_CONST(CONFIG_KASAN_SHADOW_OFFSET)
23 
24 void __init kasan_early_init(void);
25 void __init kasan_init(void);
26 
27 #else
28 
kasan_early_init(void)29 static inline void kasan_early_init(void)
30 {
31 }
32 
kasan_init(void)33 static inline void kasan_init(void)
34 {
35 }
36 
37 #endif
38 #endif
39 #endif
40