182 lines
7.0 KiB
C
182 lines
7.0 KiB
C
/*
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* Автомат адресной загрузки прошивки по ProtoCAN с сессией, контрольной суммой и A/B-слотами.
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* Приём блоков, проверка образа и активация разделены на этапы; операции Flash и метаданные
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* слотов предоставляет платформа.
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*/
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#ifndef PCAN_BOOT_H
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#define PCAN_BOOT_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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/* C28x has 16-bit addressable chars; wire octets use the low eight bits. */
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#if defined(__TMS320C28XX__) || defined(PCAN_BOOT_WIDE_BYTES)
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typedef unsigned int pcan_boot_byte_t;
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#else
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typedef uint8_t pcan_boot_byte_t;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define PCAN_BOOT_VERSION 1U
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#define PCAN_BOOT_BLOCK_SIZE 8U
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#define PCAN_BOOT_BLOCK_COUNT 65536UL
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#define PCAN_BOOT_SLOT_SIZE (PCAN_BOOT_BLOCK_COUNT * PCAN_BOOT_BLOCK_SIZE)
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#define PCAN_BOOT_SLOT_NONE 0xFFU
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#define PCAN_BOOT_MSG_CONTROL 0x9U
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#define PCAN_BOOT_MSG_DATA_A 0xAU
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#define PCAN_BOOT_MSG_DATA_B 0xBU
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#define PCAN_BOOT_MSG_STATUS 0xCU
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#define PCAN_BOOT_MSG_DISCOVERY 0xDU
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#define PCAN_BOOT_ROUTE_FROM_PM 0U
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#define PCAN_BOOT_ROUTE_FROM_DEVICE 1U
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typedef enum {
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PCAN_BOOT_CMD_IDENTIFY = 0x01U,
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PCAN_BOOT_CMD_ENTER_BOOT = 0x02U,
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PCAN_BOOT_CMD_BEGIN_IMAGE = 0x03U,
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PCAN_BOOT_CMD_BEGIN_COMPAT = 0x04U,
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PCAN_BOOT_CMD_ERASE = 0x05U,
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PCAN_BOOT_CMD_VERIFY = 0x06U,
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PCAN_BOOT_CMD_COMMIT = 0x07U,
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PCAN_BOOT_CMD_CONFIRM = 0x08U,
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PCAN_BOOT_CMD_REBOOT = 0x09U,
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PCAN_BOOT_CMD_ABORT = 0x0AU,
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PCAN_BOOT_CMD_QUERY_PROGRESS = 0x0BU,
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PCAN_BOOT_CMD_PING = 0x0CU,
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PCAN_BOOT_CMD_CAPABILITIES = 0x0DU,
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PCAN_BOOT_CMD_DEVICE_NAME = 0x0EU,
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PCAN_BOOT_CMD_MEMORY_INFO = 0x0FU
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} pcan_boot_command_t;
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typedef enum {
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PCAN_BOOT_STATUS_OK = 0x00U,
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PCAN_BOOT_STATUS_BUSY = 0x01U,
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PCAN_BOOT_STATUS_INVALID_COMMAND = 0x02U,
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PCAN_BOOT_STATUS_WRONG_DEVICE = 0x03U,
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PCAN_BOOT_STATUS_WRONG_HARDWARE = 0x04U,
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PCAN_BOOT_STATUS_INVALID_SIZE = 0x05U,
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PCAN_BOOT_STATUS_CRC_ERROR = 0x06U,
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PCAN_BOOT_STATUS_FLASH_ERROR = 0x07U,
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PCAN_BOOT_STATUS_SEQUENCE_ERROR = 0x08U,
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PCAN_BOOT_STATUS_SIGNATURE_ERROR = 0x09U,
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PCAN_BOOT_STATUS_SESSION_ERROR = 0x0AU,
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PCAN_BOOT_STATUS_VOLTAGE_ERROR = 0x0BU,
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PCAN_BOOT_STATUS_INVALID_STATE = 0x0CU
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} pcan_boot_status_t;
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typedef enum {
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PCAN_BOOT_STATE_IDLE = 0,
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PCAN_BOOT_STATE_METADATA,
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PCAN_BOOT_STATE_READY_TO_ERASE,
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PCAN_BOOT_STATE_RECEIVING,
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PCAN_BOOT_STATE_VERIFIED,
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PCAN_BOOT_STATE_FAILED,
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PCAN_BOOT_STATE_COMMITTED
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} pcan_boot_state_t;
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typedef struct {
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uint32_t image_size;
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uint32_t image_crc32;
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uint32_t firmware_version;
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uint16_t product_type;
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pcan_boot_byte_t hardware_revision_min;
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pcan_boot_byte_t hardware_revision_max;
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} pcan_boot_manifest_t;
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typedef struct {
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pcan_boot_byte_t device_type;
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pcan_boot_byte_t device_id;
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uint16_t product_type;
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pcan_boot_byte_t hardware_revision;
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uint32_t firmware_version;
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pcan_boot_byte_t active_slot;
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/** 1 for an in-place/single-slot target, 2 for A/B. Zero keeps legacy A/B. */
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pcan_boot_byte_t slot_count;
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/** Writable image capacity. Zero uses PCAN_BOOT_SLOT_SIZE. */
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uint32_t max_image_size;
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pcan_boot_byte_t ack_window; /**< 1 — ACK каждого блока, 16 — ACK каждых 16 блоков. */
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uint32_t session_timeout_ms; /**< 0 disables timeout for legacy ports. */
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} pcan_boot_config_t;
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typedef struct {
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bool (*send)(void *user, uint32_t can_id, const pcan_boot_byte_t *data, pcan_boot_byte_t dlc);
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bool (*erase_slot)(void *user, pcan_boot_byte_t slot);
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bool (*write_slot)(void *user, pcan_boot_byte_t slot, uint32_t offset,
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const pcan_boot_byte_t *data, pcan_boot_byte_t length);
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bool (*authorize)(void *user, const pcan_boot_manifest_t *manifest);
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bool (*verify_image)(void *user, pcan_boot_byte_t slot,
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const pcan_boot_manifest_t *manifest);
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/** A/B metadata, or optional single-slot activation after verification. */
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bool (*set_pending_slot)(void *user, pcan_boot_byte_t slot,
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const pcan_boot_manifest_t *manifest);
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bool (*confirm_running_slot)(void *user);
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void (*reboot)(void *user);
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/** ENTER: 0 ready, 1 deferred ACK after reset, 2 denied. NULL = legacy ready. */
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unsigned int (*enter_boot)(void *user, pcan_boot_byte_t session);
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bool (*can_reboot)(void *user);
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/** Eight-octet service response, addressed by command + page. */
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bool (*service_info)(void *user, pcan_boot_byte_t command,
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pcan_boot_byte_t page, pcan_boot_byte_t *out);
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/** Optional precise result, replacing legacy boolean verify_image. */
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pcan_boot_status_t (*verify_status)(void *user, pcan_boot_byte_t slot,
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const pcan_boot_manifest_t *manifest);
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} pcan_boot_port_t;
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typedef struct {
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pcan_boot_config_t config;
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pcan_boot_port_t port;
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void *port_user;
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pcan_boot_manifest_t manifest;
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pcan_boot_state_t state;
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uint32_t running_crc32;
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uint32_t bytes_received;
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uint16_t next_block;
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pcan_boot_byte_t session_id;
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pcan_boot_byte_t target_slot;
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pcan_boot_byte_t last_status;
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bool have_image;
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bool have_compat;
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uint32_t now_ms, last_activity_ms, discovery_at;
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bool discovery_pending;
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} pcan_boot_t;
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/** Инициализирует экземпляр. Все обязательные callbacks должны быть заданы. */
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bool pcan_boot_init(pcan_boot_t *boot, const pcan_boot_config_t *config,
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const pcan_boot_port_t *port, void *port_user);
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/** Сбрасывает незавершённую сессию, не меняя конфигурацию и callbacks. */
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void pcan_boot_abort(pcan_boot_t *boot);
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/**
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* Обрабатывает один Extended CAN-кадр.
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* Возвращает true, если кадр принадлежал загрузочному сервису этого прибора.
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*/
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bool pcan_boot_process(pcan_boot_t *boot, uint32_t can_id,
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const pcan_boot_byte_t *data, pcan_boot_byte_t dlc);
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/** Call regularly with a wrapping monotonic millisecond clock. */
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void pcan_boot_poll(pcan_boot_t *boot, uint32_t now_ms);
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/** Переносимые операции с 29-битным ProtoCAN ID. */
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uint32_t pcan_boot_make_id(pcan_boot_byte_t priority, pcan_boot_byte_t route,
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pcan_boot_byte_t device_type, pcan_boot_byte_t device_id,
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pcan_boot_byte_t msg_type, uint16_t msg_body);
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pcan_boot_byte_t pcan_boot_id_route(uint32_t can_id);
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pcan_boot_byte_t pcan_boot_id_device_type(uint32_t can_id);
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pcan_boot_byte_t pcan_boot_id_device_id(uint32_t can_id);
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pcan_boot_byte_t pcan_boot_id_msg_type(uint32_t can_id);
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uint16_t pcan_boot_id_msg_body(uint32_t can_id);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PCAN_BOOT_H */
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