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https://github.com/AsahiLinux/u-boot
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2a1453695d
This platform does not use any of the standard EEPROM functionality and instead provides its own. Use a local namespace for the I2C related defines to access the EEPROM. Cc: Lukasz Majewski <lukma@denx.de> Signed-off-by: Tom Rini <trini@konsulko.com> Acked-by: Lukasz Majewski <lukma@denx.de>
124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018
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* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
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*
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* Based on code developed by:
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*
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* Copyright (C) 2012 TQ-Systems GmbH
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* Daniel Gericke <daniel.gericke@tqs.de>
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*/
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#include <common.h>
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#include <env.h>
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#include <i2c.h>
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#include "kp_id_rev.h"
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#include <net.h>
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static int eeprom_has_been_read;
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static struct id_eeprom eeprom;
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void show_eeprom(void)
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{
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char safe_string[33];
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int i;
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u8 *p;
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puts("Module EEPROM:\n");
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/* ID */
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for (i = 0; i <= sizeof(eeprom.id) && 0xff != eeprom.id[i]; ++i)
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safe_string[i] = eeprom.id[i];
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safe_string[i] = '\0';
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if (!strncmp(safe_string, "TQM", 3)) {
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printf(" ID: %s\n", safe_string);
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env_set("boardtype", safe_string);
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} else {
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puts(" unknown hardware variant\n");
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}
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/* Serial number */
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for (i = 0; (sizeof(eeprom.serial) >= i) &&
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(eeprom.serial[i] >= 0x30) &&
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(eeprom.serial[i] <= 0x39); ++i)
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safe_string[i] = eeprom.serial[i];
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safe_string[i] = '\0';
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if (strlen(safe_string) == 8) {
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printf(" SN: %s\n", safe_string);
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env_set("serial#", safe_string);
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} else {
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puts(" unknown serial number\n");
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}
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/* MAC address */
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p = eeprom.mac;
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if (!is_valid_ethaddr(p)) {
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printf(" Not valid ETH EEPROM addr!\n");
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return;
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}
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printf(" MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
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p[0], p[1], p[2], p[3], p[4], p[5]);
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eth_env_set_enetaddr("ethaddr", p);
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}
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#define I2C_EEPROM_BUS_NUM 1
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#define I2C_EEPROM_ADDR 0x50
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#define I2C_EEPROM_ADDR_LEN 2
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int read_eeprom(void)
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{
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struct udevice *dev;
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int ret;
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if (eeprom_has_been_read)
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return 0;
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ret = i2c_get_chip_for_busnum(I2C_EEPROM_BUS_NUM, I2C_EEPROM_ADDR,
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I2C_EEPROM_ADDR_LEN, &dev);
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if (ret) {
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printf("Cannot find EEPROM !\n");
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return ret;
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}
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ret = dm_i2c_read(dev, 0x0, (uchar *)&eeprom, sizeof(eeprom));
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eeprom_has_been_read = (ret == 0) ? 1 : 0;
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return ret;
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}
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int read_board_id(void)
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{
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unsigned char rev_id = 0x42;
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char rev_str[32], buf[8];
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struct udevice *dev;
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int ret;
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ret = i2c_get_chip_for_busnum(2, 0x22, 1, &dev);
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if (ret) {
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printf("Cannot find pcf8574 IO expander !\n");
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return ret;
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}
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dm_i2c_read(dev, 0x0, &rev_id, sizeof(rev_id));
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sprintf(rev_str, "%02X", rev_id);
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if (rev_id & 0x80) {
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printf("BBoard:4x00 Rev:%s\n", rev_str);
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env_set("boardtype", "ddc");
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env_set("fit_config", "imx53_kb_conf");
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} else {
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printf("BBoard:40x0 Rev:%s\n", rev_str);
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env_set("boardtype", "hsc");
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env_set("fit_config", "imx53_kb_40x0_conf");
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}
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sprintf(buf, "kp-%s", env_get("boardtype"));
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env_set("boardname", buf);
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env_set("boardsoc", "imx53");
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env_set("kb53_rev", rev_str);
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return 0;
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}
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