1 /*
2 * Copyright (C) 2007 Freescale Semiconductor, Inc.
3 *
4 * Tony Li <tony.li@freescale.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation;
9 */
10
11 #include <common.h>
12 #include <i2c.h>
13 #include <asm/io.h>
14
15 #include "pq-mds-pib.h"
16
pib_init(void)17 int pib_init(void)
18 {
19 u8 val8;
20 u8 orig_i2c_bus;
21
22 /* Switch temporarily to I2C bus #2 */
23 orig_i2c_bus = i2c_get_bus_num();
24 i2c_set_bus_num(1);
25
26 val8 = 0;
27 #if defined(CONFIG_PCI) && !defined(CONFIG_PCISLAVE)
28 /* Assign PIB PMC slot to desired PCI bus */
29 i2c_write(0x23, 0x6, 1, &val8, 1);
30 i2c_write(0x23, 0x7, 1, &val8, 1);
31 val8 = 0xff;
32 i2c_write(0x23, 0x2, 1, &val8, 1);
33 i2c_write(0x23, 0x3, 1, &val8, 1);
34
35 val8 = 0;
36 i2c_write(0x26, 0x6, 1, &val8, 1);
37 val8 = 0x34;
38 i2c_write(0x26, 0x7, 1, &val8, 1);
39 #if defined(CONFIG_TARGET_MPC832XEMDS)
40 val8 = 0xf9; /* PMC2, PMC3 slot to PCI bus */
41 #else
42 val8 = 0xf3; /* PMC1, PMC2, PMC3 slot to PCI bus */
43 #endif
44 i2c_write(0x26, 0x2, 1, &val8, 1);
45 val8 = 0xff;
46 i2c_write(0x26, 0x3, 1, &val8, 1);
47
48 val8 = 0;
49 i2c_write(0x27, 0x6, 1, &val8, 1);
50 i2c_write(0x27, 0x7, 1, &val8, 1);
51 val8 = 0xff;
52 i2c_write(0x27, 0x2, 1, &val8, 1);
53 val8 = 0xef;
54 i2c_write(0x27, 0x3, 1, &val8, 1);
55
56 eieio();
57
58 #if defined(CONFIG_TARGET_MPC832XEMDS)
59 printf("PCI 32bit bus on PMC2 &PMC3\n");
60 #else
61 printf("PCI 32bit bus on PMC1 & PMC2 &PMC3\n");
62 #endif
63 #endif
64
65 #if defined(CONFIG_PQ_MDS_PIB_ATM)
66 #if defined(CONFIG_TARGET_MPC832XEMDS)
67 val8 = 0;
68 i2c_write(0x26, 0x7, 1, &val8, 1);
69 val8 = 0xf7;
70 i2c_write(0x26, 0x3, 1, &val8, 1);
71
72 val8 = 0;
73 i2c_write(0x21, 0x6, 1, &val8, 1);
74 i2c_write(0x21, 0x7, 1, &val8, 1);
75
76 val8 = 0xdf;
77 i2c_write(0x21, 0x2, 1, &val8, 1);
78 val8 = 0xef;
79 i2c_write(0x21, 0x3, 1, &val8, 1);
80
81 eieio();
82
83 printf("QOC3 ATM card on PMC1\n");
84 #endif
85 #endif
86 /* Reset to original I2C bus */
87 i2c_set_bus_num(orig_i2c_bus);
88 return 0;
89 }
90