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b100c2458a
This API is based on a block structure with a 8 Byte large API v3 header and various of different blocks following. It extends our current API v2, which is always 32 Byte large, and is located directly after v2. Add the MAC block as first block type. It contains the physical Ehternet interface number, a MAC address and a CRC checksum over the MAC payload. Signed-off-by: Daniel Schultz <d.schultz@phytec.de> Tested-by: Wadim Egorov <w.egorov@phytec.de>
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2023 PHYTEC Messtechnik GmbH
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* Author: Teresa Remmet <t.remmet@phytec.de>
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*/
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#ifndef _PHYTEC_SOM_DETECTION_H
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#define _PHYTEC_SOM_DETECTION_H
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#include "phytec_som_detection_blocks.h"
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#define PHYTEC_MAX_OPTIONS 17
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#define PHYTEC_EEPROM_INVAL 0xff
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#define PHYTEC_API2_DATA_LEN 32
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#define PHYTEC_GET_OPTION(option) \
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(((option) > '9') ? (option) - 'A' + 10 : (option) - '0')
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enum {
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PHYTEC_API_REV0 = 0,
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PHYTEC_API_REV1,
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PHYTEC_API_REV2,
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PHYTEC_API_REV3,
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};
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enum phytec_som_type_str {
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SOM_TYPE_PCM = 0,
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SOM_TYPE_PCL,
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SOM_TYPE_KSM,
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SOM_TYPE_KSP,
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};
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static const char * const phytec_som_type_str[] = {
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"PCM",
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"PCL",
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"KSM",
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"KSP",
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};
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struct phytec_api0_data {
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u8 pcb_rev; /* PCB revision of SoM */
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u8 som_type; /* SoM type */
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u8 ksp_no; /* KSP no */
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char opt[16]; /* SoM options */
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u8 mac[6]; /* MAC address (optional) */
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u8 pad[5]; /* padding */
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u8 cksum; /* checksum */
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} __packed;
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struct phytec_api2_data {
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u8 pcb_rev; /* PCB revision of SoM */
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u8 pcb_sub_opt_rev; /* PCB subrevision and opt revision */
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u8 som_type; /* SoM type */
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u8 som_no; /* SoM number */
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u8 ksp_no; /* KSP information */
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char opt[PHYTEC_MAX_OPTIONS]; /* SoM options */
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char bom_rev[2]; /* BOM revision */
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u8 mac[6]; /* MAC address (optional) */
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u8 crc8; /* checksum */
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} __packed;
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struct phytec_eeprom_payload {
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u8 api_rev;
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union {
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struct phytec_api0_data data_api0;
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struct phytec_api2_data data_api2;
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} data;
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struct phytec_api3_element *block_head;
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} __packed;
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struct phytec_eeprom_data {
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struct phytec_eeprom_payload payload;
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bool valid;
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};
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int phytec_eeprom_data_setup_fallback(struct phytec_eeprom_data *data,
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int bus_num, int addr,
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int addr_fallback);
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int phytec_eeprom_data_setup(struct phytec_eeprom_data *data,
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int bus_num, int addr);
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int phytec_eeprom_data_init(struct phytec_eeprom_data *data, int bus_num,
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int addr);
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void __maybe_unused phytec_print_som_info(struct phytec_eeprom_data *data);
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char * __maybe_unused phytec_get_opt(struct phytec_eeprom_data *data);
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u8 __maybe_unused phytec_get_rev(struct phytec_eeprom_data *data);
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u8 __maybe_unused phytec_get_som_type(struct phytec_eeprom_data *data);
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#if IS_ENABLED(CONFIG_CMD_EXTENSION)
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struct extension *phytec_add_extension(const char *name, const char *overlay,
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const char *other);
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#endif /* IS_ENABLED(CONFIG_CMD_EXTENSION) */
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struct phytec_api3_element *
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__maybe_unused phytec_get_block_head(struct phytec_eeprom_data *data);
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#endif /* _PHYTEC_SOM_DETECTION_H */
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