/* * (C) Copyright 2003 * EMK Elektronik GmbH <www.emk-elektronik.de> * Reinhard Meyer <r.meyer@emk-elektronik.de> * * Board specific routines for the TOP860 * * - initialisation * - interface to VPD data (mac address, clock speeds) * - memory controller * - serial io initialisation * - ethernet io initialisation * * ----------------------------------------------------------------- * 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 */#include <common.h>#include <commproc.h>#include <mpc8xx.h>/***************************************************************************** * UPM table for 60ns EDO RAM at 25 MHz bus/external clock *****************************************************************************/static const uint edo_60ns_25MHz_tbl[] = {/* single read   (offset 0x00 in upm ram) */    0x0ff3fc04,0x08f3fc04,0x00f3fc04,0x00f3fc00,    0x33f7fc07,0xfffffc05,0xfffffc05,0xfffffc05,/* burst read    (offset 0x08 in upm ram) */    0x0ff3fc04,0x08f3fc04,0x00f3fc0c,0x0ff3fc40,    0x0cf3fc04,0x03f3fc48,0x0cf3fc04,0x03f3fc48,    0x0cf3fc04,0x03f3fc00,0x3ff7fc07,0xfffffc05,    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,/* single write  (offset 0x18 in upm ram) */    0x0ffffc04,0x08fffc04,0x30fffc00,0xf1fffc07,    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,/* burst write   (offset 0x20 in upm ram) */    0x0ffffc04,0x08fffc00,0x00fffc04,0x03fffc4c,    0x00fffc00,0x07fffc4c,0x00fffc00,0x0ffffc4c,    0x00fffc00,0x3ffffc07,0xfffffc05,0xfffffc05,    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,/* refresh       (offset 0x30 in upm ram) */    0xc0fffc04,0x07fffc04,0x0ffffc04,0x0ffffc04,    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,/* exception     (offset 0x3C in upm ram) */    0xfffffc07,0xfffffc03,0xfffffc05,0xfffffc05,};/***************************************************************************** * Print Board Identity *****************************************************************************/int checkboard (void){	puts ("Board:"CONFIG_IDENT_STRING"\n");	return (0);}/***************************************************************************** * Initialize DRAM controller *****************************************************************************/long int initdram (int board_type){	volatile immap_t *immap = (immap_t *) CFG_IMMR;	volatile memctl8xx_t *memctl = &immap->im_memctl;	/*	 * Only initialize memory controller when running from FLASH.	 * When running from RAM, don't touch it.	 */	if ((ulong) initdram & 0xff000000) {		volatile uint *addr1, *addr2;		uint i, j;		upmconfig (UPMA, (uint *) edo_60ns_25MHz_tbl,			   sizeof (edo_60ns_25MHz_tbl) / sizeof (uint));		memctl->memc_mptpr = 0x0200;		memctl->memc_mamr = 0x0ca20330;		memctl->memc_or2 = -CFG_DRAM_MAX | OR_CSNT_SAM;		memctl->memc_br2 = CFG_DRAM_BASE | BR_MS_UPMA | BR_V;		/*		 * Do 8 read accesses to DRAM		 */		addr1 = (volatile uint *) 0;		addr2 = (volatile uint *) 0x00400000;		for (i = 0, j = 0; i < 8; i++)			j = addr1[0];		/*		 * Now check whether we got 4MB or 16MB populated		 */		addr1[0] = 0x12345678;		addr1[1] = 0x9abcdef0;		addr2[0] = 0xfeedc0de;		addr2[1] = 0x47110815;		if (addr1[0] == 0xfeedc0de && addr1[1] == 0x47110815) {			/* only 4MB populated */			memctl->memc_or2 = -(CFG_DRAM_MAX / 4) | OR_CSNT_SAM;		}	}	return -(memctl->memc_or2 & 0xffff0000);}/***************************************************************************** * otherinits after RAM is there and we are relocated to RAM * note: though this is an int function, nobody cares for the result! *****************************************************************************/int misc_init_r (void){	/* read 'factory' part of EEPROM */	uchar buf[81];	uchar *p;	uint length;	uint addr;	uint len;	/* get length first */	addr = CFG_FACT_OFFSET;	if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, 2)) {	  bailout:		printf ("cannot read factory configuration\n");		printf ("be sure to set ethaddr	yourself!\n");		return 0;	}	length = buf[0] + (buf[1] << 8);	addr += 2;	/* sanity check */	if (length < 20 || length > CFG_FACT_SIZE - 2)		goto bailout;	/* read lines */	while (length > 0) {		/* read one line */		len = length > 80 ? 80 : length;		if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, len))			goto bailout;		/* mark end of buffer */		buf[len] = 0;		/* search end of line */		for (p = buf; *p && *p != 0x0a; p++);		if (!*p)			goto bailout;		*p++ = 0;		/* advance to next line start */		length -= p - buf;		addr += p - buf;		/*printf ("%s\n", buf); */		/* search for our specific entry */		if (!strncmp ((char *) buf, "[RLA/lan/Ethernet] ", 19)) {			setenv ("ethaddr", buf + 19);		} else if (!strncmp ((char *) buf, "[BOARD/SERIAL] ", 15)) {			setenv ("serial#", buf + 15);		} else if (!strncmp ((char *) buf, "[BOARD/TYPE] ", 13)) {			setenv ("board_id", buf + 13);		}	}	return (0);}