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Soby Mathewf6f2b7e2017-06-12 12:13:04 +01001/*
2 * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
Antonio Nino Diaz5eb88372018-11-08 10:20:19 +00007#ifndef SDS_PRIVATE_H
8#define SDS_PRIVATE_H
Soby Mathewf6f2b7e2017-06-12 12:13:04 +01009
10/* SDS Header defines */
11#define SDS_HEADER_ID_SHIFT 0
12#define SDS_HEADER_ID_WIDTH 16
13#define SDS_HEADER_ID_MASK ((1 << SDS_HEADER_ID_WIDTH) - 1)
14
15#define SDS_HEADER_MINOR_VERSION_WIDTH 8
16#define SDS_HEADER_MINOR_VERSION_SHIFT 16
17#define SDS_HEADER_MAJOR_VERSION_WIDTH 8
18
19#define MAKE_SDS_HEADER_VERSION(major, minor) \
20 (((((major) & 0xff) << SDS_HEADER_MINOR_VERSION_WIDTH) | ((minor) & 0xff)))
21#define SDS_HEADER_VERSION_MASK \
22 ((1 << (SDS_HEADER_MINOR_VERSION_WIDTH + SDS_HEADER_MAJOR_VERSION_WIDTH)) - 1)
23
24#define SDS_HEADER_VERSION MAKE_SDS_HEADER_VERSION(1, 0)
25#define SDS_HEADER_STRUCT_SIZE_WIDTH 23
26#define SDS_HEADER_STRUCT_SIZE_SHIFT 1
27#define SDS_HEADER_STRUCT_SIZE_MASK ((1 << SDS_HEADER_STRUCT_SIZE_WIDTH) - 1)
28#define SDS_HEADER_VALID_MASK 0x1
29#define SDS_HEADER_VALID_SHIFT 0
30#define SDS_HEADER_SIZE 0x8
31
32/* Arbitrary, 16 bit value that indicates a valid SDS Memory Region */
33#define SDS_REGION_SIGNATURE 0xAA7A
34#define SDS_REGION_SIGNATURE_WIDTH 16
35#define SDS_REGION_SIGNATURE_SHIFT 0
36#define SDS_REGION_SIGNATURE_MASK ((1 << SDS_REGION_SIGNATURE_WIDTH) - 1)
37
38#define SDS_REGION_STRUCT_COUNT_SHIFT 16
39#define SDS_REGION_STRUCT_COUNT_WIDTH 8
40#define SDS_REGION_STRUCT_COUNT_MASK ((1 << SDS_REGION_STRUCT_COUNT_WIDTH) - 1)
41
42#define SDS_REGION_SCH_MINOR_SHIFT 24
43#define SDS_REGION_SCH_MINOR_WIDTH 4
44#define SDS_REGION_SCH_MINOR_MASK ((1 << SDS_REGION_SCH_MINOR_WIDTH) - 1)
45
46#define SDS_REGION_SCH_MAJOR_SHIFT 28
47#define SDS_REGION_SCH_MAJOR_WIDTH 4
48#define SDS_REGION_SCH_MAJOR_MASK ((1 << SDS_REGION_SCH_MAJOR_WIDTH) - 1)
49
50#define SDS_REGION_SCH_VERSION_MASK \
51 ((1 << (SDS_REGION_SCH_MINOR_WIDTH + SDS_REGION_SCH_MAJOR_WIDTH)) - 1)
52
53#define MAKE_SDS_REGION_SCH_VERSION(maj, min) \
54 ((((maj) & SDS_REGION_SCH_MAJOR_MASK) << SDS_REGION_SCH_MINOR_WIDTH) | \
55 ((min) & SDS_REGION_SCH_MINOR_MASK))
56
57#define SDS_REGION_SCH_VERSION MAKE_SDS_REGION_SCH_VERSION(1, 0)
58#define SDS_REGION_REGIONSIZE_OFFSET 0x4
59#define SDS_REGION_DESC_SIZE 0x8
60
Julius Werner53456fc2019-07-09 13:49:11 -070061#ifndef __ASSEMBLER__
Soby Mathewf6f2b7e2017-06-12 12:13:04 +010062#include <stddef.h>
63#include <stdint.h>
64
65/* Header containing Shared Data Structure metadata */
66typedef struct structure_header {
67 uint32_t reg[2];
68} struct_header_t;
69
Daniel Boulbyddf6d402018-05-09 12:21:46 +010070#define GET_SDS_HEADER_ID(_header) \
71 ((((struct_header_t *)(_header))->reg[0]) & SDS_HEADER_ID_MASK)
72#define GET_SDS_HEADER_VERSION(_header) \
73 (((((struct_header_t *)(_header))->reg[0]) >> SDS_HEADER_MINOR_VERSION_SHIFT)\
Soby Mathewf6f2b7e2017-06-12 12:13:04 +010074 & SDS_HEADER_VERSION_MASK)
Daniel Boulbyddf6d402018-05-09 12:21:46 +010075#define GET_SDS_HEADER_STRUCT_SIZE(_header) \
76 (((((struct_header_t *)(_header))->reg[1]) >> SDS_HEADER_STRUCT_SIZE_SHIFT)\
Soby Mathewf6f2b7e2017-06-12 12:13:04 +010077 & SDS_HEADER_STRUCT_SIZE_MASK)
Daniel Boulbyddf6d402018-05-09 12:21:46 +010078#define IS_SDS_HEADER_VALID(_header) \
79 ((((struct_header_t *)(_header))->reg[1]) & SDS_HEADER_VALID_MASK)
80#define GET_SDS_STRUCT_FIELD(_header, _field_offset) \
81 ((((uint8_t *)(_header)) + sizeof(struct_header_t)) + (_field_offset))
Soby Mathewf6f2b7e2017-06-12 12:13:04 +010082
83/* Region Descriptor describing the SDS Memory Region */
84typedef struct region_descriptor {
85 uint32_t reg[2];
86} region_desc_t;
87
88#define IS_SDS_REGION_VALID(region) \
89 (((((region_desc_t *)(region))->reg[0]) & SDS_REGION_SIGNATURE_MASK) == SDS_REGION_SIGNATURE)
90#define GET_SDS_REGION_STRUCTURE_COUNT(region) \
91 (((((region_desc_t *)(region))->reg[0]) >> SDS_REGION_STRUCT_COUNT_SHIFT)\
92 & SDS_REGION_STRUCT_COUNT_MASK)
93#define GET_SDS_REGION_SCHEMA_VERSION(region) \
94 (((((region_desc_t *)(region))->reg[0]) >> SDS_REGION_SCH_MINOR_SHIFT)\
95 & SDS_REGION_SCH_VERSION_MASK)
96#define GET_SDS_REGION_SIZE(region) ((((region_desc_t *)(region))->reg[1]))
97
Julius Werner53456fc2019-07-09 13:49:11 -070098#endif /* __ASSEMBLER__ */
Antonio Nino Diaz5eb88372018-11-08 10:20:19 +000099
100#endif /* SDS_PRIVATE_H */