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9c46b8c4e0
ft_board_setup inside the board code allows to alter device-tree during the boot process. Introduce a new function for the PHYTEC SOM detection to read the product name and part number from the EEPROM content and include both into the device-tree as * phytec,som-part-number * phytec,som-product-name This function can be called from the board code when those values should be exposed to Linux. This patch also updates the phytec_print_som_info function and changes the output. Signed-off-by: Daniel Schultz <d.schultz@phytec.de> Reviewed-by: Wadim Egorov <w.egorov@phytec.de> Tested-by: Wadim Egorov <w.egorov@phytec.de>
111 lines
3.1 KiB
C
111 lines
3.1 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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#include <fdtdec.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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#define PHYTEC_PRODUCT_NAME_STD_LEN 7 // PCx-000
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#define PHYTEC_PRODUCT_NAME_KSP_LEN 8 // KSP-0000
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#define PHYTEC_PRODUCT_NAME_MAX_LEN PHYTEC_PRODUCT_NAME_KSP_LEN
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#define PHYTEC_PART_NUMBER_STD_LEN 11 // PCx-000-\w{1,17}.Ax
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#define PHYTEC_PART_NUMBER_KSP_LEN 11 // KSP-0000.Ax
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#define PHYTEC_PART_NUMBER_STD_KSP_LEN 16 // PCx-000-KSx00.Ax
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#define PHYTEC_PART_NUMBER_MAX_LEN PHYTEC_PRODUCT_NAME_MAX_LEN + 21
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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_OF_LIBFDT)
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int phytec_ft_board_fixup(struct phytec_eeprom_data *data, void *blob);
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#endif /* IS_ENABLED(CONFIG_OF_LIBFDT) */
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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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