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/*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __SDS_PRIVATE_H__
#define __SDS_PRIVATE_H__
/* SDS Header defines */
#define SDS_HEADER_ID_SHIFT 0
#define SDS_HEADER_ID_WIDTH 16
#define SDS_HEADER_ID_MASK ((1 << SDS_HEADER_ID_WIDTH) - 1)
#define SDS_HEADER_MINOR_VERSION_WIDTH 8
#define SDS_HEADER_MINOR_VERSION_SHIFT 16
#define SDS_HEADER_MAJOR_VERSION_WIDTH 8
#define MAKE_SDS_HEADER_VERSION(major, minor) \
(((((major) & 0xff) << SDS_HEADER_MINOR_VERSION_WIDTH) | ((minor) & 0xff)))
#define SDS_HEADER_VERSION_MASK \
((1 << (SDS_HEADER_MINOR_VERSION_WIDTH + SDS_HEADER_MAJOR_VERSION_WIDTH)) - 1)
#define SDS_HEADER_VERSION MAKE_SDS_HEADER_VERSION(1, 0)
#define SDS_HEADER_STRUCT_SIZE_WIDTH 23
#define SDS_HEADER_STRUCT_SIZE_SHIFT 1
#define SDS_HEADER_STRUCT_SIZE_MASK ((1 << SDS_HEADER_STRUCT_SIZE_WIDTH) - 1)
#define SDS_HEADER_VALID_MASK 0x1
#define SDS_HEADER_VALID_SHIFT 0
#define SDS_HEADER_SIZE 0x8
/* Arbitrary, 16 bit value that indicates a valid SDS Memory Region */
#define SDS_REGION_SIGNATURE 0xAA7A
#define SDS_REGION_SIGNATURE_WIDTH 16
#define SDS_REGION_SIGNATURE_SHIFT 0
#define SDS_REGION_SIGNATURE_MASK ((1 << SDS_REGION_SIGNATURE_WIDTH) - 1)
#define SDS_REGION_STRUCT_COUNT_SHIFT 16
#define SDS_REGION_STRUCT_COUNT_WIDTH 8
#define SDS_REGION_STRUCT_COUNT_MASK ((1 << SDS_REGION_STRUCT_COUNT_WIDTH) - 1)
#define SDS_REGION_SCH_MINOR_SHIFT 24
#define SDS_REGION_SCH_MINOR_WIDTH 4
#define SDS_REGION_SCH_MINOR_MASK ((1 << SDS_REGION_SCH_MINOR_WIDTH) - 1)
#define SDS_REGION_SCH_MAJOR_SHIFT 28
#define SDS_REGION_SCH_MAJOR_WIDTH 4
#define SDS_REGION_SCH_MAJOR_MASK ((1 << SDS_REGION_SCH_MAJOR_WIDTH) - 1)
#define SDS_REGION_SCH_VERSION_MASK \
((1 << (SDS_REGION_SCH_MINOR_WIDTH + SDS_REGION_SCH_MAJOR_WIDTH)) - 1)
#define MAKE_SDS_REGION_SCH_VERSION(maj, min) \
((((maj) & SDS_REGION_SCH_MAJOR_MASK) << SDS_REGION_SCH_MINOR_WIDTH) | \
((min) & SDS_REGION_SCH_MINOR_MASK))
#define SDS_REGION_SCH_VERSION MAKE_SDS_REGION_SCH_VERSION(1, 0)
#define SDS_REGION_REGIONSIZE_OFFSET 0x4
#define SDS_REGION_DESC_SIZE 0x8
#ifndef __ASSEMBLY__
#include <stddef.h>
#include <stdint.h>
/* Header containing Shared Data Structure metadata */
typedef struct structure_header {
uint32_t reg[2];
} struct_header_t;
#define GET_SDS_HEADER_ID(header) \
((((struct_header_t *)(header))->reg[0]) & SDS_HEADER_ID_MASK)
#define GET_SDS_HEADER_VERSION(header) \
(((((struct_header_t *)(header))->reg[0]) >> SDS_HEADER_MINOR_VERSION_SHIFT)\
& SDS_HEADER_VERSION_MASK)
#define GET_SDS_HEADER_STRUCT_SIZE(header) \
(((((struct_header_t *)(header))->reg[1]) >> SDS_HEADER_STRUCT_SIZE_SHIFT)\
& SDS_HEADER_STRUCT_SIZE_MASK)
#define IS_SDS_HEADER_VALID(header) \
((((struct_header_t *)(header))->reg[1]) & SDS_HEADER_VALID_MASK)
#define GET_SDS_STRUCT_FIELD(header, field_offset) \
((((uint8_t *)(header)) + sizeof(struct_header_t)) + (field_offset))
/* Region Descriptor describing the SDS Memory Region */
typedef struct region_descriptor {
uint32_t reg[2];
} region_desc_t;
#define IS_SDS_REGION_VALID(region) \
(((((region_desc_t *)(region))->reg[0]) & SDS_REGION_SIGNATURE_MASK) == SDS_REGION_SIGNATURE)
#define GET_SDS_REGION_STRUCTURE_COUNT(region) \
(((((region_desc_t *)(region))->reg[0]) >> SDS_REGION_STRUCT_COUNT_SHIFT)\
& SDS_REGION_STRUCT_COUNT_MASK)
#define GET_SDS_REGION_SCHEMA_VERSION(region) \
(((((region_desc_t *)(region))->reg[0]) >> SDS_REGION_SCH_MINOR_SHIFT)\
& SDS_REGION_SCH_VERSION_MASK)
#define GET_SDS_REGION_SIZE(region) ((((region_desc_t *)(region))->reg[1]))
#endif /* __ASSEMBLY__ */
#endif /* __SDS_PRIVATE_H__ */
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