1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1
2 /*
3 * Copyright (C) 2016 Imagination Technologies
4 * Author: Paul Burton <paul.burton@mips.com>
5 */
6
7 #ifndef __MIPS_ASM_MACHINE_H__
8 #define __MIPS_ASM_MACHINE_H__
9
10 #include <linux/libfdt.h>
11 #include <linux/of.h>
12
13 struct mips_machine {
14 const struct of_device_id *matches;
15 const void *fdt;
16 bool (*detect)(void);
17 const void *(*fixup_fdt)(const void *f
18 unsigned int (*measure_hpt_freq)(void)
19 };
20
21 extern long __mips_machines_start;
22 extern long __mips_machines_end;
23
24 #define MIPS_MACHINE(name)
25 static const struct mips_machine __mip
26 __used __section(".mips.machin
27
28 #define for_each_mips_machine(mach)
29 for ((mach) = (struct mips_machine *)&
30 (mach) < (struct mips_machine *)&
31 (mach)++)
32
33 /**
34 * mips_machine_is_compatible() - check if a m
35 * @mach: the machine struct to check
36 * @fdt: the FDT to check for compatibility wi
37 *
38 * Check whether the given machine @mach is co
39 * device tree @fdt, based upon the compatibil
40 *
41 * Return: the device id matched if any, else
42 */
43 static inline const struct of_device_id *
44 mips_machine_is_compatible(const struct mips_m
45 {
46 const struct of_device_id *match;
47
48 if (!mach->matches)
49 return NULL;
50
51 for (match = mach->matches; match->com
52 if (fdt_node_check_compatible(
53 return match;
54 }
55
56 return NULL;
57 }
58
59 /**
60 * struct mips_fdt_fixup - Describe a fixup to
61 * @apply: applies the fixup to @fdt, returns
62 * @description: a short description of the fi
63 *
64 * Describes a fixup applied to an FDT blob by
65 * @description field provides a short descrip
66 * use in error messages if the @apply functio
67 */
68 struct mips_fdt_fixup {
69 int (*apply)(void *fdt);
70 const char *description;
71 };
72
73 /**
74 * apply_mips_fdt_fixups() - apply fixups to a
75 * @fdt_out: buffer in which to place the fixe
76 * @fdt_out_size: the size of the @fdt_out buf
77 * @fdt_in: the FDT blob
78 * @fixups: pointer to an array of fixups to b
79 *
80 * Loop through the array of fixups pointed to
81 * function on each until either one returns a
82 * the list as indicated by an entry with a NU
83 *
84 * Return: zero on success, else -errno
85 */
86 extern int __init apply_mips_fdt_fixups(void *
87 const
88 const
89
90 #endif /* __MIPS_ASM_MACHINE_H__ */
91
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