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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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u-boot/board/eltec/elppc/misc.c

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/*
* (C) Copyright 2002 ELTEC Elektronik AG
* Frank Gottschling <fgottschling@eltec.de>
*
* 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
*/
/* includes */
#include <common.h>
#include <linux/ctype.h>
#include <pci.h>
#include <net.h>
#include "srom.h"
/* imports */
extern char console_buffer[CFG_CBSIZE];
extern int l2_cache_enable (int l2control);
extern int eepro100_write_eeprom (struct eth_device* dev, int location,
int addr_len, unsigned short data);
extern int read_eeprom (struct eth_device* dev, int location, int addr_len);
/*----------------------------------------------------------------------------*/
/*
* read/write to nvram is only byte access
*/
void *nvram_read(void *dest, const long src, size_t count)
{
uchar *d = (uchar *) dest;
uchar *s = (uchar *) (CFG_ENV_MAP_ADRS + src);
while (count--)
*d++ = *s++;
return dest;
}
void nvram_write(long dest, const void *src, size_t count)
{
uchar *d = (uchar *) (CFG_ENV_MAP_ADRS + dest);
uchar *s = (uchar *) src;
while (count--)
*d++ = *s++;
}
/*----------------------------------------------------------------------------*/
/*
* handle sroms on ELPPC
* fix ether address
* set serial console as default
*/
int misc_init_r (void)
{
revinfo eerev;
u_char *ptr;
u_int i, l, initSrom, copyNv;
char buf[256];
char hex[23] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0,
0, 0, 0, 0, 10, 11, 12, 13, 14, 15 };
/* Clock setting for MPC107 i2c */
mpc107_i2c_init (MPC107_EUMB_ADDR, 0x2b);
/* Reset the EPIC */
out32r (MPC107_EUMB_GCR, 0xa0000000);
while (in32r (MPC107_EUMB_GCR) & 0x80000000); /* Wait for reset to complete */
out32r (MPC107_EUMB_GCR, 0x20000000); /* Put into into mixed mode */
while (in32r (MPC107_EUMB_IACKR) != 0xff); /* Clear all pending interrupts */
/*
* Check/Remake revision info
*/
initSrom = 0;
copyNv = 0;
/* read out current revision srom contens */
mpc107_srom_load (0x0000, (u_char*)&eerev, sizeof(revinfo),
SECOND_DEVICE, FIRST_BLOCK);
/* read out current nvram shadow image */
nvram_read (buf, CFG_NV_SROM_COPY_ADDR, CFG_SROM_SIZE);
if (strcmp (eerev.magic, "ELTEC") != 0)
{
/* srom is not initialized -> create a default revision info */
for (i = 0, ptr = (u_char *)&eerev; i < sizeof(revinfo); i++)
*ptr++ = 0x00;
strcpy(eerev.magic, "ELTEC");
eerev.revrev[0] = 1;
eerev.revrev[1] = 0;
eerev.size = 0x00E0;
eerev.category[0] = 0x01;
/* node id from dead e128 as default */
eerev.etheraddr[0] = 0x00;
eerev.etheraddr[1] = 0x00;
eerev.etheraddr[2] = 0x5B;
eerev.etheraddr[3] = 0x00;
eerev.etheraddr[4] = 0x2E;
eerev.etheraddr[5] = 0x4D;
/* cache config word for ELPPC */
*(int*)&eerev.res[0] = 0;
initSrom = 1; /* force dialog */
copyNv = 1; /* copy to nvram */
}
if ((copyNv == 0) && (el_srom_checksum((u_char*)&eerev, CFG_SROM_SIZE) !=
el_srom_checksum((u_char*)buf, CFG_SROM_SIZE)))
{
printf ("Invalid revision info copy in nvram !\n");
printf ("Press key:\n <c> to copy current revision info to nvram.\n");
printf (" <r> to reenter revision info.\n");
printf ("=> ");
if (0 != readline (NULL))
{
switch ((char)toupper(console_buffer[0]))
{
case 'C':
copyNv = 1;
break;
case 'R':
copyNv = 1;
initSrom = 1;
break;
}
}
}
if (initSrom)
{
memcpy (buf, &eerev.revision[0][0], 14); /* save all revision info */
printf ("Enter revision number (0-9): %c ", eerev.revision[0][0]);
if (0 != readline (NULL))
{
eerev.revision[0][0] = (char)toupper(console_buffer[0]);
memcpy (&eerev.revision[1][0], buf, 12); /* shift rest of rev info */
}
printf ("Enter revision character (A-Z): %c ", eerev.revision[0][1]);
if (1 == readline (NULL))
{
eerev.revision[0][1] = (char)toupper(console_buffer[0]);
}
printf ("Enter board name (V-XXXX-XXXX): %s ", (char *)&eerev.board);
if (11 == readline (NULL))
{
for (i=0; i<11; i++)
eerev.board[i] = (char)toupper(console_buffer[i]);
eerev.board[11] = '\0';
}
printf ("Enter serial number: %s ", (char *)&eerev.serial );
if (6 == readline (NULL))
{
for (i=0; i<6; i++)
eerev.serial[i] = console_buffer[i];
eerev.serial[6] = '\0';
}
printf ("Enter ether node ID with leading zero (HEX): %02x%02x%02x%02x%02x%02x ",
eerev.etheraddr[0], eerev.etheraddr[1],
eerev.etheraddr[2], eerev.etheraddr[3],
eerev.etheraddr[4], eerev.etheraddr[5]);
if (12 == readline (NULL))
{
for (i=0; i<12; i+=2)
eerev.etheraddr[i>>1] = (char)(16*hex[toupper(console_buffer[i])-'0'] +
hex[toupper(console_buffer[i+1])-'0']);
}
l = strlen ((char *)&eerev.text);
printf("Add to text section (max 64 chr): %s ", (char *)&eerev.text );
if (0 != readline (NULL))
{
for (i = l; i<63; i++)
eerev.text[i] = console_buffer[i-l];
eerev.text[63] = '\0';
}
/* prepare network eeprom */
memset (buf, 0, 128);
buf[0] = eerev.etheraddr[1];
buf[1] = eerev.etheraddr[0];
buf[2] = eerev.etheraddr[3];
buf[3] = eerev.etheraddr[2];
buf[4] = eerev.etheraddr[5];
buf[5] = eerev.etheraddr[4];
*(unsigned short *)&buf[20] = 0x48B2;
*(unsigned short *)&buf[22] = 0x0004;
*(unsigned short *)&buf[24] = 0x1433;
printf("\nSRom: Writing i82559 info ........ ");
if (eepro100_srom_store ((unsigned short *)buf) == -1)
printf("FAILED\n");
else
printf("OK\n");
/* update CRC */
eerev.crc = el_srom_checksum((u_char *)eerev.board, eerev.size);
/* write new values */
printf("\nSRom: Writing revision info ...... ");
if (mpc107_srom_store((BLOCK_SIZE-sizeof(revinfo)), (u_char *)&eerev,
sizeof(revinfo), SECOND_DEVICE, FIRST_BLOCK) == -1)
printf("FAILED\n\n");
else
printf("OK\n\n");
/* write new values as shadow image to nvram */
nvram_write (CFG_NV_SROM_COPY_ADDR, (void *)&eerev, CFG_SROM_SIZE);
} /*if (initSrom) */
/* copy current values as shadow image to nvram */
if (initSrom == 0 && copyNv == 1)
nvram_write (CFG_NV_SROM_COPY_ADDR, (void *)&eerev, CFG_SROM_SIZE);
/* update environment */
sprintf (buf, "%02x:%02x:%02x:%02x:%02x:%02x",
eerev.etheraddr[0], eerev.etheraddr[1],
eerev.etheraddr[2], eerev.etheraddr[3],
eerev.etheraddr[4], eerev.etheraddr[5]);
setenv ("ethaddr", buf);
/* set serial console as default */
if ((ptr = getenv ("console")) == NULL)
setenv ("console", "serial");
/* print actual board identification */
printf("Ident: %s Ser %s Rev %c%c\n",
eerev.board, (char *)&eerev.serial,
eerev.revision[0][0], eerev.revision[0][1]);
return (0);
}
/*----------------------------------------------------------------------------*/