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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347 lines
8.9 KiB
347 lines
8.9 KiB
/*
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* (C) Copyright 2011
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* Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.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 <hush.h>
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#include <i2c.h>
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#include "common.h"
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int ivm_calc_crc(unsigned char *buf, int len)
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{
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const unsigned short crc_tab[16] = {
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0x0000, 0xCC01, 0xD801, 0x1400,
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0xF001, 0x3C00, 0x2800, 0xE401,
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0xA001, 0x6C00, 0x7800, 0xB401,
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0x5000, 0x9C01, 0x8801, 0x4400};
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unsigned short crc = 0; /* final result */
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unsigned short r1 = 0; /* temp */
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unsigned char byte = 0; /* input buffer */
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int i;
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/* calculate CRC from array data */
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for (i = 0; i < len; i++) {
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byte = buf[i];
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/* lower 4 bits */
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r1 = crc_tab[crc & 0xF];
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crc = ((crc) >> 4) & 0x0FFF;
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crc = crc ^ r1 ^ crc_tab[byte & 0xF];
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/* upper 4 bits */
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r1 = crc_tab[crc & 0xF];
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crc = (crc >> 4) & 0x0FFF;
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crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
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}
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return crc;
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}
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static int ivm_set_value(char *name, char *value)
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{
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char tempbuf[256];
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if (value != NULL) {
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sprintf(tempbuf, "%s=%s", name, value);
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return set_local_var(tempbuf, 0);
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} else {
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unset_local_var(name);
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}
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return 0;
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}
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static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
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int check)
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{
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unsigned short val;
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unsigned char valbuf[30];
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if ((buf[off + 0] != buf[off + 2]) &&
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(buf[off + 2] != buf[off + 4])) {
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printf("%s Error corrupted %s\n", __func__, name);
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val = -1;
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} else {
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val = buf[off + 0] + (buf[off + 1] << 8);
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if ((val == 0) && (check == 1))
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val = -1;
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}
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sprintf((char *)valbuf, "%x", val);
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ivm_set_value(name, (char *)valbuf);
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return val;
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}
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#define INV_BLOCKSIZE 0x100
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#define INV_DATAADDRESS 0x21
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#define INVENTORYDATASIZE (INV_BLOCKSIZE - INV_DATAADDRESS - 3)
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#define IVM_POS_SHORT_TEXT 0
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#define IVM_POS_MANU_ID 1
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#define IVM_POS_MANU_SERIAL 2
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#define IVM_POS_PART_NUMBER 3
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#define IVM_POS_BUILD_STATE 4
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#define IVM_POS_SUPPLIER_PART_NUMBER 5
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#define IVM_POS_DELIVERY_DATE 6
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#define IVM_POS_SUPPLIER_BUILD_STATE 7
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#define IVM_POS_CUSTOMER_ID 8
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#define IVM_POS_CUSTOMER_PROD_ID 9
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#define IVM_POS_HISTORY 10
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#define IVM_POS_SYMBOL_ONLY 11
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static char convert_char(char c)
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{
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return (c < ' ' || c > '~') ? '.' : c;
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}
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static int ivm_findinventorystring(int type,
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unsigned char *const string,
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unsigned long maxlen,
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unsigned char *buf)
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{
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int xcode = 0;
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unsigned long cr = 0;
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unsigned long addr = INV_DATAADDRESS;
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unsigned long size = 0;
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unsigned long nr = type;
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int stop = 0; /* stop on semicolon */
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memset(string, '\0', maxlen);
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switch (type) {
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case IVM_POS_SYMBOL_ONLY:
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nr = 0;
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stop = 1;
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break;
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default:
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nr = type;
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stop = 0;
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}
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/* Look for the requested number of CR. */
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while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
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if ((buf[addr] == '\r'))
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cr++;
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addr++;
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}
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/*
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* the expected number of CR was found until the end of the IVM
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* content --> fill string
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*/
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if (addr < INVENTORYDATASIZE) {
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/* Copy the IVM string in the corresponding string */
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for (; (buf[addr] != '\r') &&
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((buf[addr] != ';') || (!stop)) &&
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(size < (maxlen - 1) &&
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(addr < INVENTORYDATASIZE)); addr++) {
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size += sprintf((char *)string + size, "%c",
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convert_char (buf[addr]));
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}
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/*
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* copy phase is done: check if everything is ok. If not,
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* the inventory data is most probably corrupted: tell
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* the world there is a problem!
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*/
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if (addr == INVENTORYDATASIZE) {
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xcode = -1;
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printf("Error end of string not found\n");
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} else if ((size > (maxlen - 1)) &&
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(buf[addr] != '\r')) {
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xcode = -1;
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printf("string too long till next CR\n");
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}
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} else {
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/*
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* some CR are missing...
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* the inventory data is most probably corrupted
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*/
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xcode = -1;
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printf("not enough cr found\n");
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}
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return xcode;
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}
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#define GET_STRING(name, which, len) \
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if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
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ivm_set_value(name, (char *)valbuf); \
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}
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static int ivm_check_crc(unsigned char *buf, int block)
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{
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unsigned long crc;
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unsigned long crceeprom;
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crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
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crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
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buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
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if (crc != crceeprom) {
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if (block == 0)
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printf("Error CRC Block: %d EEprom: calculated: \
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%lx EEprom: %lx\n", block, crc, crceeprom);
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return -1;
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}
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return 0;
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}
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static int ivm_analyze_block2(unsigned char *buf, int len)
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{
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unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
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unsigned long count;
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/* IVM_MAC Adress begins at offset 1 */
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sprintf((char *)valbuf, "%pM", buf + 1);
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ivm_set_value("IVM_MacAddress", (char *)valbuf);
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/* if an offset is defined, add it */
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#if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
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if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
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unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
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val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
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buf[4] = (val >> 16) & 0xff;
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buf[5] = (val >> 8) & 0xff;
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buf[6] = val & 0xff;
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sprintf((char *)valbuf, "%pM", buf + 1);
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}
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#endif
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#ifdef MACH_TYPE_KM_KIRKWOOD
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setenv((char *)"ethaddr", (char *)valbuf);
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#else
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if (getenv("ethaddr") == NULL)
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setenv((char *)"ethaddr", (char *)valbuf);
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#endif
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/* IVM_MacCount */
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count = (buf[10] << 24) +
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(buf[11] << 16) +
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(buf[12] << 8) +
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buf[13];
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if (count == 0xffffffff)
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count = 1;
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sprintf((char *)valbuf, "%lx", count);
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ivm_set_value("IVM_MacCount", (char *)valbuf);
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return 0;
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}
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int ivm_analyze_eeprom(unsigned char *buf, int len)
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{
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unsigned short val;
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unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
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unsigned char *tmp;
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if (ivm_check_crc(buf, 0) != 0)
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return -1;
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ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
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"IVM_BoardId", 0, 1);
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val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
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"IVM_HWKey", 6, 1);
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if (val != 0xffff) {
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sprintf((char *)valbuf, "%x", ((val / 100) % 10));
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ivm_set_value("IVM_HWVariant", (char *)valbuf);
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sprintf((char *)valbuf, "%x", (val % 100));
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ivm_set_value("IVM_HWVersion", (char *)valbuf);
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}
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ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
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"IVM_Functions", 12, 0);
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GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
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GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
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tmp = (unsigned char *) getenv("IVM_DeviceName");
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if (tmp) {
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int len = strlen((char *)tmp);
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int i = 0;
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while (i < len) {
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if (tmp[i] == ';') {
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ivm_set_value("IVM_ShortText",
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(char *)&tmp[i + 1]);
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break;
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}
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i++;
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}
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if (i >= len)
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ivm_set_value("IVM_ShortText", NULL);
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} else {
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ivm_set_value("IVM_ShortText", NULL);
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}
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GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
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GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
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GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
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GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
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GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
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GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
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GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
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GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
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GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
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if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
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return 0;
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ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
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CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
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return 0;
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}
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int ivm_read_eeprom(void)
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{
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#if defined(CONFIG_I2C_MUX)
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I2C_MUX_DEVICE *dev = NULL;
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#endif
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uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
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uchar *buf;
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unsigned long dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
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int ret;
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#if defined(CONFIG_I2C_MUX)
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/* First init the Bus, select the Bus */
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#if defined(CONFIG_SYS_I2C_IVM_BUS)
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dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
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#else
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buf = (unsigned char *) getenv("EEprom_ivm");
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if (buf != NULL)
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dev = i2c_mux_ident_muxstring(buf);
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#endif
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if (dev == NULL) {
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printf("Error couldnt add Bus for IVM\n");
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return -1;
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}
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i2c_set_bus_num(dev->busid);
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#endif
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buf = (unsigned char *) getenv("EEprom_ivm_addr");
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if (buf != NULL) {
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ret = strict_strtoul((char *)buf, 16, &dev_addr);
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if (ret != 0)
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return -3;
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}
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/* add deblocking here */
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i2c_make_abort();
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ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
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CONFIG_SYS_IVM_EEPROM_MAX_LEN);
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if (ret != 0) {
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printf("Error reading EEprom\n");
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return -2;
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}
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return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
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}
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