kexec_handover_internal.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef LINUX_KEXEC_HANDOVER_INTERNAL_H
 3#define LINUX_KEXEC_HANDOVER_INTERNAL_H
 4
 5#include <linux/kexec_handover.h>
 6#include <linux/list.h>
 7#include <linux/types.h>
 8
 9#ifdef CONFIG_KEXEC_HANDOVER_DEBUGFS
10#include <linux/debugfs.h>
11
12struct kho_debugfs {
13	struct dentry *dir;
14	struct dentry *sub_fdt_dir;
15	struct list_head fdt_list;
16};
17
18#else
19struct kho_debugfs {};
20#endif
21
22extern struct kho_scratch *kho_scratch;
23extern unsigned int kho_scratch_cnt;
24
25bool kho_finalized(void);
26int kho_finalize(void);
27
28#ifdef CONFIG_KEXEC_HANDOVER_DEBUGFS
29int kho_debugfs_init(void);
30void kho_in_debugfs_init(struct kho_debugfs *dbg, const void *fdt);
31int kho_out_debugfs_init(struct kho_debugfs *dbg);
32int kho_debugfs_fdt_add(struct kho_debugfs *dbg, const char *name,
33			const void *fdt, bool root);
34void kho_debugfs_fdt_remove(struct kho_debugfs *dbg, void *fdt);
35#else
36static inline int kho_debugfs_init(void) { return 0; }
37static inline void kho_in_debugfs_init(struct kho_debugfs *dbg,
38				       const void *fdt) { }
39static inline int kho_out_debugfs_init(struct kho_debugfs *dbg) { return 0; }
40static inline int kho_debugfs_fdt_add(struct kho_debugfs *dbg, const char *name,
41				      const void *fdt, bool root) { return 0; }
42static inline void kho_debugfs_fdt_remove(struct kho_debugfs *dbg,
43					  void *fdt) { }
44#endif /* CONFIG_KEXEC_HANDOVER_DEBUGFS */
45
46#ifdef CONFIG_KEXEC_HANDOVER_DEBUG
47bool kho_scratch_overlap(phys_addr_t phys, size_t size);
48#else
49static inline bool kho_scratch_overlap(phys_addr_t phys, size_t size)
50{
51	return false;
52}
53#endif /* CONFIG_KEXEC_HANDOVER_DEBUG */
54
55#endif /* LINUX_KEXEC_HANDOVER_INTERNAL_H */