blob: 08bff49c2cf39dab7f440f772f913621f0cb1d29 [file] [log] [blame]
wdenk3bac3512003-03-12 10:41:04 +00001/*
2 * (C) Copyright 2001
3 * Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <mpc824x.h>
26#include <asm/processor.h>
27#include <pci.h>
28
wdenk8bde7f72003-06-27 21:31:46 +000029int sysControlDisplay(int digit, uchar ascii_code);
wdenk3bac3512003-03-12 10:41:04 +000030extern void Plx9030Init(void);
31
32 /* We have to clear the initial data area here. Couldn't have done it
33 * earlier because DRAM had not been initialized.
34 */
35int board_pre_init(void)
36{
37
38 /* enable DUAL UART Mode on CPC45 */
39 *(uchar*)DUART_DCR |= 0x1; /* set DCM bit */
40
41 return 0;
42}
43
44int checkboard(void)
45{
46/*
47 char revision = BOARD_REV;
48*/
49 ulong busfreq = get_bus_freq(0);
50 char buf[32];
51
52 printf("CPC45 ");
53/*
54 printf("Revision %d ", revision);
55*/
56 printf("Local Bus at %s MHz\n", strmhz(buf, busfreq));
57
58 return 0;
59}
60
61long int initdram(int board_type)
62{
63 int i, cnt;
64 volatile uchar * base = CFG_SDRAM_BASE;
65 volatile ulong * addr;
66 ulong save[32];
67 ulong val, ret = 0;
68
69 for (i=0, cnt=(CFG_MAX_RAM_SIZE / sizeof(long)) >> 1; cnt > 0; cnt >>= 1) {
70
71 addr = (volatile ulong *)base + cnt;
72 save[i++] = *addr;
73 *addr = ~cnt;
74 }
75
76 addr = (volatile ulong *)base;
77 save[i] = *addr;
78 *addr = 0;
79
80 if (*addr != 0) {
81 *addr = save[i];
82 goto Done;
83 }
84
85 for (cnt = 1; cnt <= CFG_MAX_RAM_SIZE / sizeof(long); cnt <<= 1) {
86 addr = (volatile ulong *)base + cnt;
87 val = *addr;
88 *addr = save[--i];
89 if (val != ~cnt) {
90 ulong new_bank0_end = cnt * sizeof(long) - 1;
91 ulong mear1 = mpc824x_mpc107_getreg(MEAR1);
92 ulong emear1 = mpc824x_mpc107_getreg(EMEAR1);
93 mear1 = (mear1 & 0xFFFFFF00) |
94 ((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT);
95 emear1 = (emear1 & 0xFFFFFF00) |
96 ((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT);
97 mpc824x_mpc107_setreg(MEAR1, mear1);
98 mpc824x_mpc107_setreg(EMEAR1, emear1);
99
100 ret = cnt * sizeof(long);
101 goto Done;
102 }
103 }
104
105 ret = CFG_MAX_RAM_SIZE;
106Done:
107 return ret;
108}
109
110/*
111 * Initialize PCI Devices, report devices found.
112 */
113#ifndef CONFIG_PCI_PNP
114
115static struct pci_config_table pci_sandpoint_config_table[] = {
116 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x0f, PCI_ANY_ID,
117 pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
118 PCI_ENET0_MEMADDR,
119 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
120 { }
121};
122#endif
123
124
125struct pci_controller hose = {
126#ifndef CONFIG_PCI_PNP
127 config_table: pci_sandpoint_config_table,
128#endif
129};
130
131void pci_init_board(void)
132{
133 pci_mpc824x_init(&hose);
134
135 /* init PCI_to_LOCAL Bus BRIDGE */
136 Plx9030Init();
137
138 sysControlDisplay(0,' ');
139 sysControlDisplay(1,'C');
140 sysControlDisplay(2,'P');
141 sysControlDisplay(3,'C');
142 sysControlDisplay(4,' ');
143 sysControlDisplay(5,'4');
144 sysControlDisplay(6,'5');
145 sysControlDisplay(7,' ');
146
147}
148
149/**************************************************************************
150*
151* sysControlDisplay - controls one of the Alphanum. Display digits.
152*
153* This routine will write an ASCII character to the display digit requested.
154*
155* SEE ALSO:
156*
157* RETURNS: NA
158*/
159
160int sysControlDisplay
161 (
162 int digit, /* number of digit 0..7 */
163 uchar ascii_code /* ASCII code */
164 )
165{
166 if ((digit < 0) || (digit > 7))
167 return (-1);
168
169 *((volatile uchar*)(DISP_CHR_RAM + digit)) = ascii_code;
170
171 return (0);
172}