1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef __ASM_SH_KEXEC_H
3 #define __ASM_SH_KEXEC_H
4
5 #include <asm/ptrace.h>
6 #include <asm/string.h>
7 #include <linux/kernel.h>
8
9 /*
10 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_
11 * I.e. Maximum page that is mapped directly i
12 * and kmap is not required.
13 *
14 * Someone correct me if FIXADDR_START - PAGEO
15 * calculation for the amount of memory direct
16 * kernel memory space.
17 */
18
19 /* Maximum physical address we can use pages f
20 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
21 /* Maximum address we can reach in physical ad
22 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
23 /* Maximum address we can use for the control
24 #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
25
26 #define KEXEC_CONTROL_PAGE_SIZE 4096
27
28 /* The native architecture */
29 #define KEXEC_ARCH KEXEC_ARCH_SH
30
31 #ifdef CONFIG_KEXEC_CORE
32 /* arch/sh/kernel/machine_kexec.c */
33 void reserve_crashkernel(void);
34
35 static inline void crash_setup_regs(struct pt_
36 struct pt_
37 {
38 if (oldregs)
39 memcpy(newregs, oldregs, sizeo
40 else {
41 __asm__ __volatile__ ("mov r0,
42 __asm__ __volatile__ ("mov r1,
43 __asm__ __volatile__ ("mov r2,
44 __asm__ __volatile__ ("mov r3,
45 __asm__ __volatile__ ("mov r4,
46 __asm__ __volatile__ ("mov r5,
47 __asm__ __volatile__ ("mov r6,
48 __asm__ __volatile__ ("mov r7,
49 __asm__ __volatile__ ("mov r8,
50 __asm__ __volatile__ ("mov r9,
51 __asm__ __volatile__ ("mov r10
52 __asm__ __volatile__ ("mov r11
53 __asm__ __volatile__ ("mov r12
54 __asm__ __volatile__ ("mov r13
55 __asm__ __volatile__ ("mov r14
56 __asm__ __volatile__ ("mov r15
57
58 __asm__ __volatile__ ("sts pr,
59 __asm__ __volatile__ ("sts mac
60 __asm__ __volatile__ ("sts mac
61
62 __asm__ __volatile__ ("stc gbr
63 __asm__ __volatile__ ("stc sr,
64
65 newregs->pc = _THIS_IP_;
66 }
67 }
68 #else
69 static inline void reserve_crashkernel(void) {
70 #endif /* CONFIG_KEXEC_CORE */
71
72 #endif /* __ASM_SH_KEXEC_H */
73
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