upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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284 lines
6.8 KiB
284 lines
6.8 KiB
/*
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* Copyright 2006 Freescale Semiconductor
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* York Sun (yorksun@freescale.com)
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* Haiying Wang (haiying.wang@freescale.com)
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <i2c.h>
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#include <linux/ctype.h>
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typedef struct {
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u8 id[4]; /* 0x0000 - 0x0003 EEPROM Tag */
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u8 sn[12]; /* 0x0004 - 0x000F Serial Number */
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u8 errata[5]; /* 0x0010 - 0x0014 Errata Level */
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u8 date[6]; /* 0x0015 - 0x001a Build Date */
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u8 res_0; /* 0x001b Reserved */
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u8 version[4]; /* 0x001c - 0x001f Version */
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u8 tempcal[8]; /* 0x0020 - 0x0027 Temperature Calibration Factors*/
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u8 tempcalsys[2]; /* 0x0028 - 0x0029 System Temperature Calibration Factors*/
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u8 res_1[22]; /* 0x0020 - 0x003f Reserved */
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u8 mac_size; /* 0x0040 Mac table size */
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u8 mac_flag; /* 0x0041 Mac table flags */
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u8 mac[8][6]; /* 0x0042 - 0x0071 Mac addresses */
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u32 crc; /* 0x0072 crc32 checksum */
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} EEPROM_data;
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static EEPROM_data mac_data;
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int mac_show(void)
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{
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int i;
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u8 mac_size;
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unsigned char ethaddr[8][18];
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unsigned char enetvar[32];
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/* Show EEPROM tagID,
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* always the four characters 'NXID'.
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*/
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printf("ID ");
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for (i = 0; i < 4; i++)
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printf("%c", mac_data.id[i]);
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printf("\n");
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/* Show Serial number,
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* 0 to 11 charaters of errata information.
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*/
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printf("SN ");
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for (i = 0; i < 12; i++)
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printf("%c", mac_data.sn[i]);
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printf("\n");
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/* Show Errata Level,
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* 0 to 4 characters of errata information.
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*/
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printf("Errata ");
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for (i = 0; i < 5; i++)
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printf("%c", mac_data.errata[i]);
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printf("\n");
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/* Show Build Date,
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* BCD date values, as YYMMDDhhmmss.
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*/
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printf("Date 20%02x\/%02x\/%02x %02x:%02x:%02x\n",
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mac_data.date[0],
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mac_data.date[1],
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mac_data.date[2],
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mac_data.date[3],
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mac_data.date[4],
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mac_data.date[5]);
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/* Show MAC table size,
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* Value from 0 to 7 indicating how many MAC
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* addresses are stored in the system EEPROM.
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*/
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if((mac_data.mac_size > 0) && (mac_data.mac_size <= 8))
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mac_size = mac_data.mac_size;
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else
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mac_size = 8; /* Set the max size */
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printf("MACSIZE %x\n", mac_size);
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/* Show Mac addresses */
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for (i = 0; i < mac_size; i++) {
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sprintf((char *)ethaddr[i],
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"%02x:%02x:%02x:%02x:%02x:%02x",
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mac_data.mac[i][0],
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mac_data.mac[i][1],
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mac_data.mac[i][2],
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mac_data.mac[i][3],
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mac_data.mac[i][4],
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mac_data.mac[i][5]);
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printf("MAC %d %s\n", i, ethaddr[i]);
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sprintf((char *)enetvar,
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i ? "eth%daddr" : "ethaddr", i);
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setenv((char *)enetvar, (char *)ethaddr[i]);
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}
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return 0;
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}
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int mac_read(void)
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{
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int ret, length;
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unsigned int crc = 0;
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unsigned char dev = ID_EEPROM_ADDR, *data;
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length = sizeof(EEPROM_data);
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ret = i2c_read(dev, 0, 1, (unsigned char *)(&mac_data), length);
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if (ret) {
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printf("Read failed.\n");
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return -1;
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}
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data = (unsigned char *)(&mac_data);
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printf("Check CRC on reading ...");
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crc = crc32(crc, data, length - 4);
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if (crc != mac_data.crc) {
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printf("CRC checksum is invalid, in EEPROM CRC is %x, calculated CRC is %x\n",
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mac_data.crc, crc);
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return -1;
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} else {
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printf("CRC OK\n");
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mac_show();
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}
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return 0;
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}
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int mac_prog(void)
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{
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int ret, i, length;
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unsigned int crc = 0;
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unsigned char dev = ID_EEPROM_ADDR, *ptr;
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unsigned char *eeprom_data = (unsigned char *)(&mac_data);
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mac_data.res_0 = 0;
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memset((void *)mac_data.res_1, 0, sizeof(mac_data.res_1));
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length = sizeof(EEPROM_data);
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crc = crc32(crc, eeprom_data, length - 4);
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mac_data.crc = crc;
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for (i = 0, ptr = eeprom_data; i < length; i += 8, ptr += 8) {
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ret = i2c_write(dev, i, 1, ptr, min((length - i),8));
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udelay(5000); /* 5ms write cycle timing */
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if (ret)
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break;
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}
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if (ret) {
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printf("Programming failed.\n");
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return -1;
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} else {
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printf("Programming %d bytes. Reading back ...\n", length);
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mac_read();
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}
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return 0;
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}
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int do_mac(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
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{
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int i;
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char cmd = 's';
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unsigned long long mac_val;
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if (i2c_probe(ID_EEPROM_ADDR) != 0)
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return -1;
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if (argc > 1) {
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cmd = argv[1][0];
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switch (cmd) {
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case 'r': /* display */
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mac_read();
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break;
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case 's': /* save */
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mac_prog();
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break;
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case 'i': /* id */
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for (i = 0; i < 4; i++) {
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mac_data.id[i] = argv[2][i];
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}
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break;
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case 'n': /* serial number */
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for (i = 0; i < 12; i++) {
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mac_data.sn[i] = argv[2][i];
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}
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break;
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case 'e': /* errata */
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for (i = 0; i < 5; i++) {
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mac_data.errata[i] = argv[2][i];
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}
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break;
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case 'd': /* date */
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mac_val = simple_strtoull(argv[2], NULL, 16);
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for (i = 0; i < 6; i++) {
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mac_data.date[i] = (mac_val >> (40 - 8 * i));
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}
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break;
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case 'p': /* mac table size */
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mac_data.mac_size =
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(unsigned char)simple_strtoul(argv[2], NULL, 16);
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break;
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case '0': /* mac 0 */
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case '1': /* mac 1 */
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case '2': /* mac 2 */
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case '3': /* mac 3 */
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case '4': /* mac 4 */
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case '5': /* mac 5 */
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case '6': /* mac 6 */
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case '7': /* mac 7 */
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mac_val = simple_strtoull(argv[2], NULL, 16);
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for (i = 0; i < 6; i++) {
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mac_data.mac[cmd - '0'][i] =
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*((unsigned char *)
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(((unsigned int)(&mac_val)) + i + 2));
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}
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break;
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case 'h': /* help */
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default:
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printf("Usage:\n%s\n", cmdtp->usage);
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break;
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}
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} else {
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mac_show();
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}
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return 0;
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}
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int mac_read_from_eeprom(void)
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{
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int length, i;
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unsigned char dev = ID_EEPROM_ADDR;
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unsigned char *data;
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unsigned char ethaddr[4][18];
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unsigned char enetvar[32];
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unsigned int crc = 0;
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length = sizeof(EEPROM_data);
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if (i2c_read(dev, 0, 1, (unsigned char *)(&mac_data), length)) {
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printf("Read failed.\n");
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return -1;
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}
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data = (unsigned char *)(&mac_data);
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crc = crc32(crc, data, length - 4);
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if (crc != mac_data.crc) {
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return -1;
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} else {
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for (i = 0; i < 4; i++) {
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if (memcmp(&mac_data.mac[i], "\0\0\0\0\0\0", 6)) {
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sprintf((char *)ethaddr[i],
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"%02x:%02x:%02x:%02x:%02x:%02x",
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mac_data.mac[i][0],
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mac_data.mac[i][1],
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mac_data.mac[i][2],
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mac_data.mac[i][3],
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mac_data.mac[i][4],
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mac_data.mac[i][5]);
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sprintf((char *)enetvar,
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i ? "eth%daddr" : "ethaddr",
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i);
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setenv((char *)enetvar, (char *)ethaddr[i]);
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}
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}
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}
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return 0;
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}
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