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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2018
- * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
- *
- * Based on code developed by:
- *
- * Copyright (C) 2012 TQ-Systems GmbH
- * Daniel Gericke <daniel.gericke@tqs.de>
- */
- #include <common.h>
- #include <env.h>
- #include <i2c.h>
- #include "kp_id_rev.h"
- static int eeprom_has_been_read;
- static struct id_eeprom eeprom;
- void show_eeprom(void)
- {
- char safe_string[33];
- int i;
- u8 *p;
- puts("Module EEPROM:\n");
- /* ID */
- for (i = 0; i <= sizeof(eeprom.id) && 0xff != eeprom.id[i]; ++i)
- safe_string[i] = eeprom.id[i];
- safe_string[i] = '\0';
- if (!strncmp(safe_string, "TQM", 3)) {
- printf(" ID: %s\n", safe_string);
- env_set("boardtype", safe_string);
- } else {
- puts(" unknown hardware variant\n");
- }
- /* Serial number */
- for (i = 0; (sizeof(eeprom.serial) >= i) &&
- (eeprom.serial[i] >= 0x30) &&
- (eeprom.serial[i] <= 0x39); ++i)
- safe_string[i] = eeprom.serial[i];
- safe_string[i] = '\0';
- if (strlen(safe_string) == 8) {
- printf(" SN: %s\n", safe_string);
- env_set("serial#", safe_string);
- } else {
- puts(" unknown serial number\n");
- }
- /* MAC address */
- p = eeprom.mac;
- if (!is_valid_ethaddr(p)) {
- printf(" Not valid ETH EEPROM addr!\n");
- return;
- }
- printf(" MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
- p[0], p[1], p[2], p[3], p[4], p[5]);
- eth_env_set_enetaddr("ethaddr", p);
- }
- int read_eeprom(void)
- {
- struct udevice *dev;
- int ret;
- if (eeprom_has_been_read)
- return 0;
- ret = i2c_get_chip_for_busnum(CONFIG_SYS_EEPROM_BUS_NUM,
- CONFIG_SYS_I2C_EEPROM_ADDR,
- CONFIG_SYS_I2C_EEPROM_ADDR_LEN, &dev);
- if (ret) {
- printf("Cannot find EEPROM !\n");
- return ret;
- }
- ret = dm_i2c_read(dev, 0x0, (uchar *)&eeprom, sizeof(eeprom));
- eeprom_has_been_read = (ret == 0) ? 1 : 0;
- return ret;
- }
- int read_board_id(void)
- {
- unsigned char rev_id = 0x42;
- char rev_str[32], buf[8];
- struct udevice *dev;
- int ret;
- ret = i2c_get_chip_for_busnum(2, 0x22, 1, &dev);
- if (ret) {
- printf("Cannot find pcf8574 IO expander !\n");
- return ret;
- }
- dm_i2c_read(dev, 0x0, &rev_id, sizeof(rev_id));
- sprintf(rev_str, "%02X", rev_id);
- if (rev_id & 0x80) {
- printf("BBoard:4x00 Rev:%s\n", rev_str);
- env_set("boardtype", "ddc");
- env_set("fit_config", "imx53_kb_conf");
- } else {
- printf("BBoard:40x0 Rev:%s\n", rev_str);
- env_set("boardtype", "hsc");
- env_set("fit_config", "imx53_kb_40x0_conf");
- }
- sprintf(buf, "kp-%s", env_get("boardtype"));
- env_set("boardname", buf);
- env_set("boardsoc", "imx53");
- env_set("kb53_rev", rev_str);
- return 0;
- }
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