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/*
* Copyright (c) 2023-2024, Linaro Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __TRANSFER_LIST_H
#define __TRANSFER_LIST_H
#include <stdbool.h>
#include <stdint.h>
#include <common/ep_info.h>
#include <lib/utils_def.h>
#define TRANSFER_LIST_SIGNATURE U(0x4a0fb10b)
#define TRANSFER_LIST_VERSION U(0x0001)
/*
* Init value of maximum alignment required by any TE data in the TL
* specified as a power of two
*/
#define TRANSFER_LIST_INIT_MAX_ALIGN U(3)
/* Alignment required by TE header start address, in bytes */
#define TRANSFER_LIST_GRANULE U(8)
/*
* Version of the register convention used.
* Set to 1 for both AArch64 and AArch32 according to fw handoff spec v0.9
*/
#define REGISTER_CONVENTION_VERSION_MASK (1 << 24)
#ifndef __ASSEMBLER__
#define TL_FLAGS_HAS_CHECKSUM BIT(0)
enum transfer_list_tag_id {
TL_TAG_EMPTY = 0,
TL_TAG_FDT = 1,
TL_TAG_HOB_BLOCK = 2,
TL_TAG_HOB_LIST = 3,
TL_TAG_ACPI_TABLE_AGGREGATE = 4,
TL_TAG_OPTEE_PAGABLE_PART = 0x100,
TL_TAG_DT_SPMC_MANIFEST = 0x101,
TL_TAG_EXEC_EP_INFO64 = 0x102,
};
enum transfer_list_ops {
TL_OPS_NON, /* invalid for any operation */
TL_OPS_ALL, /* valid for all operations */
TL_OPS_RO, /* valid for read only */
TL_OPS_CUS, /* abort or switch to special code to interpret */
};
struct transfer_list_header {
uint32_t signature;
uint8_t checksum;
uint8_t version;
uint8_t hdr_size;
uint8_t alignment; /* max alignment of TE data */
uint32_t size; /* TL header + all TEs */
uint32_t max_size;
uint32_t flags;
uint32_t reserved; /* spare bytes */
/*
* Commented out element used to visualize dynamic part of the
* data structure.
*
* Note that struct transfer_list_entry also is dynamic in size
* so the elements can't be indexed directly but instead must be
* traversed in order
*
* struct transfer_list_entry entries[];
*/
};
struct __attribute__((packed)) transfer_list_entry {
uint32_t tag_id : 24;
uint8_t hdr_size;
uint32_t data_size;
/*
* Commented out element used to visualize dynamic part of the
* data structure.
*
* Note that padding is added at the end of @data to make to reach
* a 8-byte boundary.
*
* uint8_t data[ROUNDUP(data_size, 8)];
*/
};
CASSERT(sizeof(struct transfer_list_entry) == U(0x8), assert_transfer_list_entry_size);
void transfer_list_dump(struct transfer_list_header *tl);
entry_point_info_t *
transfer_list_set_handoff_args(struct transfer_list_header *tl,
entry_point_info_t *ep_info);
struct transfer_list_header *transfer_list_init(void *addr, size_t max_size);
struct transfer_list_header *
transfer_list_relocate(struct transfer_list_header *tl, void *addr,
size_t max_size);
enum transfer_list_ops
transfer_list_check_header(const struct transfer_list_header *tl);
void transfer_list_update_checksum(struct transfer_list_header *tl);
bool transfer_list_verify_checksum(const struct transfer_list_header *tl);
bool transfer_list_set_data_size(struct transfer_list_header *tl,
struct transfer_list_entry *entry,
uint32_t new_data_size);
void *transfer_list_entry_data(struct transfer_list_entry *entry);
bool transfer_list_rem(struct transfer_list_header *tl,
struct transfer_list_entry *entry);
struct transfer_list_entry *transfer_list_add(struct transfer_list_header *tl,
uint32_t tag_id,
uint32_t data_size,
const void *data);
struct transfer_list_entry *
transfer_list_add_with_align(struct transfer_list_header *tl, uint32_t tag_id,
uint32_t data_size, const void *data,
uint8_t alignment);
struct transfer_list_entry *
transfer_list_next(struct transfer_list_header *tl,
struct transfer_list_entry *last);
struct transfer_list_entry *transfer_list_find(struct transfer_list_header *tl,
uint32_t tag_id);
#endif /*__ASSEMBLER__*/
#endif /*__TRANSFER_LIST_H*/