3 * EMK Elektronik GmbH <www.emk-elektronik.de>
4 * Reinhard Meyer <r.meyer@emk-elektronik.de>
6 * Board specific routines for the TOP860
9 * - interface to VPD data (mac address, clock speeds)
11 * - serial io initialisation
12 * - ethernet io initialisation
14 * -----------------------------------------------------------------
15 * See file CREDITS for list of people who contributed to this
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License as
20 * published by the Free Software Foundation; either version 2 of
21 * the License, or (at your option) any later version.
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
38 /*****************************************************************************
\r
39 * UPM table for 60ns EDO RAM at 25 MHz bus/external clock
\r
40 *****************************************************************************/
\r
41 static const uint edo_60ns_25MHz_tbl[] = {
43 /* single read (offset 0x00 in upm ram) */
\r
44 0x0ff3fc04,0x08f3fc04,0x00f3fc04,0x00f3fc00,
\r
45 0x33f7fc07,0xfffffc05,0xfffffc05,0xfffffc05,
\r
46 /* burst read (offset 0x08 in upm ram) */
\r
47 0x0ff3fc04,0x08f3fc04,0x00f3fc0c,0x0ff3fc40,
\r
48 0x0cf3fc04,0x03f3fc48,0x0cf3fc04,0x03f3fc48,
\r
49 0x0cf3fc04,0x03f3fc00,0x3ff7fc07,0xfffffc05,
\r
50 0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
\r
51 /* single write (offset 0x18 in upm ram) */
\r
52 0x0ffffc04,0x08fffc04,0x30fffc00,0xf1fffc07,
\r
53 0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
\r
54 /* burst write (offset 0x20 in upm ram) */
\r
55 0x0ffffc04,0x08fffc00,0x00fffc04,0x03fffc4c,
\r
56 0x00fffc00,0x07fffc4c,0x00fffc00,0x0ffffc4c,
\r
57 0x00fffc00,0x3ffffc07,0xfffffc05,0xfffffc05,
\r
58 0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
\r
59 /* refresh (offset 0x30 in upm ram) */
\r
60 0xc0fffc04,0x07fffc04,0x0ffffc04,0x0ffffc04,
\r
61 0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
\r
62 0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
\r
63 /* exception (offset 0x3C in upm ram) */
\r
64 0xfffffc07,0xfffffc03,0xfffffc05,0xfffffc05,
\r
67 /*****************************************************************************
\r
68 * Print Board Identity
\r
69 *****************************************************************************/
\r
72 puts ("Board:"CONFIG_IDENT_STRING"\n");
76 /*****************************************************************************
\r
77 * Initialize DRAM controller
\r
78 *****************************************************************************/
\r
79 long int initdram (int board_type)
81 volatile immap_t *immap = (immap_t *) CFG_IMMR;
82 volatile memctl8xx_t *memctl = &immap->im_memctl;
85 * Only initialize memory controller when running from FLASH.
86 * When running from RAM, don't touch it.
88 if ((ulong) initdram & 0xff000000)
\r
90 volatile uint *addr1, *addr2;
\r
93 upmconfig (UPMA, (uint *) edo_60ns_25MHz_tbl,
\r
94 sizeof (edo_60ns_25MHz_tbl) / sizeof (uint));
95 memctl->memc_mptpr = 0x0200;
96 memctl->memc_mamr = 0x0ca20330;
97 memctl->memc_or2 = -CFG_DRAM_MAX | OR_CSNT_SAM;
98 memctl->memc_br2 = CFG_DRAM_BASE | BR_MS_UPMA | BR_V;
100 * Do 8 read accesses to DRAM
\r
102 addr1 = (volatile uint*) 0;
\r
103 addr2 = (volatile uint*) 0x00400000;
\r
104 for (i=0, j=0; i<8; i++)
\r
108 * Now check whether we got 4MB or 16MB populated
\r
110 addr1[0] = 0x12345678;
\r
111 addr1[1] = 0x9abcdef0;
\r
112 addr2[0] = 0xfeedc0de;
\r
113 addr2[1] = 0x47110815;
\r
114 if (addr1[0] == 0xfeedc0de && addr1[1] == 0x47110815)
\r
116 /* only 4MB populated */
\r
117 memctl->memc_or2 = -(CFG_DRAM_MAX/4) | OR_CSNT_SAM;
\r
121 return -(memctl->memc_or2 & 0xffff0000);
124 /*****************************************************************************
\r
125 * otherinits after RAM is there and we are relocated to RAM
\r
126 * note: though this is an int function, nobody cares for the result!
\r
127 *****************************************************************************/
\r
128 int misc_init_r (void)
130 /* read 'factory' part of EEPROM */
\r
137 /* get length first */
\r
138 addr = CFG_FACT_OFFSET;
\r
139 if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, 2))
\r
142 printf ("cannot read factory configuration\n");
\r
143 printf ("be sure to set ethaddr yourself!\n");
\r
146 length = buf[0] + (buf[1]<<8);
\r
150 if (length < 20 || length > CFG_FACT_SIZE-2)
\r
156 /* read one line */
\r
157 len = length > 80 ? 80 : length;
\r
158 if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, len))
\r
160 /* mark end of buffer */
\r
162 /* search end of line */
\r
163 for (p=buf; *p && *p != 0x0a; p++) ;
\r
167 /* advance to next line start */
\r
170 /*printf ("%s\n", buf);*/
\r
171 /* search for our specific entry */
\r
172 if (!strncmp ((char *)buf, "[RLA/lan/Ethernet] ", 19))
\r
174 setenv ("ethaddr", buf+19);
176 else if (!strncmp ((char *)buf, "[BOARD/SERIAL] ", 15))
\r
178 setenv ("serial#", buf+15);
180 else if (!strncmp ((char *)buf, "[BOARD/TYPE] ", 13))
\r
182 setenv ("board_id", buf+13);