LXR uboot/board/k+p/kp_imx53/kp_id

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2018
   4 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
   5 *
   6 * Based on code developed by:
   7 *
   8 * Copyright (C) 2012 TQ-Systems GmbH
   9 * Daniel Gericke <daniel.gericke@tqs.de>
  10 */
  11
  12#include <common.h>
  13#include <env.h>
  14#include <i2c.h>
  15#include "kp_id_rev.h"
  16#include <net.h>
  17
  18static int eeprom_has_been_read;
  19static struct id_eeprom eeprom;
  20
  21void show_eeprom(void)
  22{
  23        char safe_string[33];
  24        int i;
  25        u8 *p;
  26
  27        puts("Module EEPROM:\n");
  28        /* ID */
  29        for (i = 0; i <= sizeof(eeprom.id) && 0xff != eeprom.id[i]; ++i)
  30                safe_string[i] = eeprom.id[i];
  31        safe_string[i] = '\0';
  32
  33        if (!strncmp(safe_string, "TQM", 3)) {
  34                printf("  ID: %s\n", safe_string);
  35                env_set("boardtype", safe_string);
  36        } else {
  37                puts("  unknown hardware variant\n");
  38        }
  39
  40        /* Serial number */
  41        for (i = 0; (sizeof(eeprom.serial) >= i) &&
  42                    (eeprom.serial[i] >= 0x30) &&
  43                    (eeprom.serial[i] <= 0x39); ++i)
  44                safe_string[i] = eeprom.serial[i];
  45        safe_string[i] = '\0';
  46
  47        if (strlen(safe_string) == 8) {
  48                printf("  SN: %s\n", safe_string);
  49                env_set("serial#", safe_string);
  50        } else {
  51                puts("  unknown serial number\n");
  52        }
  53
  54        /* MAC address  */
  55        p = eeprom.mac;
  56        if (!is_valid_ethaddr(p)) {
  57                printf("  Not valid ETH EEPROM addr!\n");
  58                return;
  59        }
  60
  61        printf("  MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
  62               p[0], p[1], p[2], p[3], p[4], p[5]);
  63
  64        eth_env_set_enetaddr("ethaddr", p);
  65}
  66
  67#define I2C_EEPROM_BUS_NUM      1
  68#define I2C_EEPROM_ADDR         0x50
  69#define I2C_EEPROM_ADDR_LEN     2
  70
  71int read_eeprom(void)
  72{
  73        struct udevice *dev;
  74        int ret;
  75
  76        if (eeprom_has_been_read)
  77                return 0;
  78
  79        ret = i2c_get_chip_for_busnum(I2C_EEPROM_BUS_NUM, I2C_EEPROM_ADDR,
  80                                      I2C_EEPROM_ADDR_LEN, &dev);
  81        if (ret) {
  82                printf("Cannot find EEPROM !\n");
  83                return ret;
  84        }
  85
  86        ret = dm_i2c_read(dev, 0x0, (uchar *)&eeprom, sizeof(eeprom));
  87
  88        eeprom_has_been_read = (ret == 0) ? 1 : 0;
  89        return ret;
  90}
  91
  92int read_board_id(void)
  93{
  94        unsigned char rev_id = 0x42;
  95        char rev_str[32], buf[8];
  96        struct udevice *dev;
  97        int ret;
  98
  99        ret = i2c_get_chip_for_busnum(2, 0x22, 1, &dev);
 100        if (ret) {
 101                printf("Cannot find pcf8574 IO expander !\n");
 102                return ret;
 103        }
 104
 105        dm_i2c_read(dev, 0x0, &rev_id, sizeof(rev_id));
 106
 107        sprintf(rev_str, "%02X", rev_id);
 108        if (rev_id & 0x80) {
 109                printf("BBoard:4x00 Rev:%s\n", rev_str);
 110                env_set("boardtype", "ddc");
 111                env_set("fit_config", "imx53_kb_conf");
 112        } else {
 113                printf("BBoard:40x0 Rev:%s\n", rev_str);
 114                env_set("boardtype", "hsc");
 115                env_set("fit_config", "imx53_kb_40x0_conf");
 116        }
 117
 118        sprintf(buf, "kp-%s", env_get("boardtype"));
 119        env_set("boardname", buf);
 120        env_set("boardsoc", "imx53");
 121        env_set("kb53_rev", rev_str);
 122
 123        return 0;
 124}
 125