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 /* End of the shadow map */
22 #define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
23 /* Offset for mem to shadow address transformation */
24 #define KASAN_SHADOW_OFFSET __XTENSA_UL_CONST(CONFIG_KASAN_SHADOW_OFFSET)
25
26 void __init kasan_early_init(void);
27 void __init kasan_init(void);
28
29 #else
30
31 static inline void kasan_early_init(void)
32 {
33 }
34
35 static inline void kasan_init(void)
36 {
37 }
38
39 #endif
40 #endif
41 #endif
42
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