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https://source.denx.de/u-boot/u-boot.git
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c5c5d8a4f8
Move dh_add_item_number_and_serial_to_env() to common code, so it can be used by both STM32MP13xx and iMX8MP DHSOM. No functional change. Signed-off-by: Marek Vasut <marek.vasut@mailbox.org> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+
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*
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* Copyright 2022 DENX Software Engineering GmbH, Philip Oberfichtner <pro@denx.de>
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*/
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#define DH_EEPROM_ID_PAGE_MAX_SIZE 64
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enum eip_request_values {
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DH_MAC0,
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DH_MAC1,
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DH_ITEM_NUMBER,
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DH_SERIAL_NUMBER,
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};
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/* DH item: Vendor coding */
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#define DH_ITEM_PREFIX_NXP 0x01
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#define DH_ITEM_PREFIX_NXP_CHR 'I'
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#define DH_ITEM_PREFIX_ST 0x02
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#define DH_ITEM_PREFIX_ST_CHR 'S'
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/*
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* DH item: Finished state coding
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* Bit = 0 means half finished
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* Prefix is 'H'
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* Bit = 1 means finished with a customer image flashed
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* Prefix is 'F'
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*/
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#define DH_ITEM_PREFIX_FIN_BIT BIT(7)
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#define DH_ITEM_PREFIX_FIN_HALF_CHR 'H'
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#define DH_ITEM_PREFIX_FIN_FLASHED_CHR 'F'
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struct eeprom_id_page {
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/* Header */
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struct {
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u8 id[3]; /* Identifier 'D', 'H', 'E' - 'D' is at index 0 */
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u8 version; /* 0x10 -- Version 1.0 */
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u8 crc16_pl[2]; /* Checksum payload, [1] is MSbyte */
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u8 crc8_hdr; /* Checksum header */
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} hdr;
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/* Payload */
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struct {
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u8 mac0[6];
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u8 mac1[6];
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u8 item_prefix; /* H/F is coded in MSbits, Vendor coding starts at LSbits */
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u8 item_num[3]; /* [2] is MSbyte */
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u8 serial[9]; /* [8] is MSbyte */
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} pl;
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};
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#define DH_EEPROM_ID_PAGE_V1_0 0x10
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/*
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* dh_mac_is_in_env - Check if MAC address is already set
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*
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* @env: name of environment variable
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* Return: true if MAC is set, false otherwise
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*/
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bool dh_mac_is_in_env(const char *env);
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/*
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* dh_get_mac_is_enabled - Test if ethernet MAC is enabled in DT
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*
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* @alias: alias for ethernet MAC device tree node
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* Return: 0 if OK, other value on error
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*/
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int dh_get_mac_is_enabled(const char *alias);
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/*
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* dh_get_mac_from_eeprom - Get MAC address from eeprom and write it to enetaddr
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*
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* @enetaddr: buffer where address is to be stored
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* @alias: alias for EEPROM device tree node
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* Return: 0 if OK, other value on error
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*/
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int dh_get_mac_from_eeprom(unsigned char *enetaddr, const char *alias);
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/*
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* dh_read_eeprom_id_page() - Read EEPROM ID page content into given buffer
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* @eeprom_buffer: Buffer for EEPROM ID page content
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* @alias: Alias for EEPROM ID page device tree node
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*
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* Read the content of the EEPROM ID page into the given buffer (parameter
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* eeprom_buffer). The EEPROM ID page device is selected via alias device
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* tree name (parameter alias). The data of the EEPROM ID page is verified.
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* An error is returned for reading failures and invalid data.
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*
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* Return: 0 if OK, other value on error
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*/
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int dh_read_eeprom_id_page(u8 *eeprom_buffer, const char *alias);
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/*
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* dh_get_value_from_eeprom_buffer() - Get value from EEPROM buffer
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* @eip_request_values: Requested value as enum
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* @data: Buffer where value is to be stored
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* @data_len: Length of the value buffer
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* @eip: Pointer to EEPROM ID page struct from which the data is parsed
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*
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* Gets the value specified by the parameter eip_request_values from the EEPROM
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* data struct (parameter eip). The data is written to the specified data
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* buffer (parameter data). If the length of the data (parameter data_len) is
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* not sufficient to copy the data into the buffer, an error is returned.
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*
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* Return: 0 if OK, other value on error
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*/
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int dh_get_value_from_eeprom_buffer(enum eip_request_values request, u8 *data, int data_len,
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struct eeprom_id_page *eip);
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/*
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* dh_setup_mac_address - Try to get MAC address from various locations and write it to env
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* @eip: ID EEPROM buffer
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*
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* Return: 0 if OK, other value on error
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*/
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int dh_setup_mac_address(struct eeprom_id_page *eip);
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/*
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* dh_add_item_number_and_serial_to_env - Try to get DH IDs from WLP write them to env
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* @eip: ID EEPROM buffer
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*
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* Return: 0 if OK, other value on error
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*/
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void dh_add_item_number_and_serial_to_env(struct eeprom_id_page *eip);
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