* (C) Copyright 2011
* Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.com
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
-#include <hush.h>
+#include <cli_hush.h>
#include <i2c.h>
#include "common.h"
-int ivm_calc_crc(unsigned char *buf, int len)
+#define MAC_STR_SZ 20
+
+static int ivm_calc_crc(unsigned char *buf, int len)
{
const unsigned short crc_tab[16] = {
0x0000, 0xCC01, 0xD801, 0x1400,
/* Look for the requested number of CR. */
while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
- if ((buf[addr] == '\r'))
+ if (buf[addr] == '\r')
cr++;
addr++;
}
return 0;
}
+/* take care of the possible MAC address offset and the IVM content offset */
+static int process_mac(unsigned char *valbuf, unsigned char *buf,
+ int offset)
+{
+ unsigned char mac[6];
+ unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
+
+ /* use an intermediate buffer, to not change IVM content
+ * MAC address is at offset 1
+ */
+ memcpy(mac, buf+1, 6);
+
+ if (offset) {
+ val += offset;
+ mac[3] = (val >> 16) & 0xff;
+ mac[4] = (val >> 8) & 0xff;
+ mac[5] = val & 0xff;
+ }
+
+ sprintf((char *)valbuf, "%pM", mac);
+ return 0;
+}
+
static int ivm_analyze_block2(unsigned char *buf, int len)
{
- unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
+ unsigned char valbuf[MAC_STR_SZ];
unsigned long count;
/* IVM_MAC Adress begins at offset 1 */
sprintf((char *)valbuf, "%pM", buf + 1);
ivm_set_value("IVM_MacAddress", (char *)valbuf);
- /* if an offset is defined, add it */
-#if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
- if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
- unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
-
- val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
- buf[4] = (val >> 16) & 0xff;
- buf[5] = (val >> 8) & 0xff;
- buf[6] = val & 0xff;
- sprintf((char *)valbuf, "%pM", buf + 1);
- }
-#endif
-#ifdef MACH_TYPE_KM_KIRKWOOD
- setenv((char *)"ethaddr", (char *)valbuf);
-#else
- if (getenv("ethaddr") == NULL)
- setenv((char *)"ethaddr", (char *)valbuf);
-#endif
-
/* IVM_MacCount */
count = (buf[10] << 24) +
(buf[11] << 16) +
return 0;
}
-int ivm_read_eeprom(void)
+static int ivm_populate_env(unsigned char *buf, int len)
{
-#if defined(CONFIG_I2C_MUX)
- I2C_MUX_DEVICE *dev = NULL;
-#endif
- uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
- uchar *buf;
- unsigned long dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
- int ret;
+ unsigned char *page2;
+ unsigned char valbuf[MAC_STR_SZ];
-#if defined(CONFIG_I2C_MUX)
- /* First init the Bus, select the Bus */
-#if defined(CONFIG_SYS_I2C_IVM_BUS)
- dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
-#else
- buf = (unsigned char *) getenv("EEprom_ivm");
- if (buf != NULL)
- dev = i2c_mux_ident_muxstring(buf);
-#endif
- if (dev == NULL) {
- printf("Error couldnt add Bus for IVM\n");
- return -1;
+ /* do we have the page 2 filled ? if not return */
+ if (ivm_check_crc(buf, 2))
+ return 0;
+ page2 = &buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN*2];
+
+ /* if an offset is defined, add it */
+ process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET);
+ if (getenv("ethaddr") == NULL)
+ setenv((char *)"ethaddr", (char *)valbuf);
+#ifdef CONFIG_KMVECT1
+/* KMVECT1 has two ethernet interfaces */
+ if (getenv("eth1addr") == NULL) {
+ process_mac(valbuf, page2, 1);
+ setenv((char *)"eth1addr", (char *)valbuf);
}
- i2c_set_bus_num(dev->busid);
#endif
+
+ return 0;
+}
+
+int ivm_read_eeprom(unsigned char *buf, int len)
+{
+ int ret;
+
+ i2c_set_bus_num(CONFIG_KM_IVM_BUS);
/* add deblocking here */
i2c_make_abort();
- ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
- CONFIG_SYS_IVM_EEPROM_MAX_LEN);
+ ret = i2c_read(CONFIG_SYS_IVM_EEPROM_ADR, 0, 1, buf, len);
if (ret != 0) {
printf("Error reading EEprom\n");
return -2;
}
- return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
+ return ivm_populate_env(buf, len);
}