1 /*
2 * (C) Copyright 2007
3 * Gary Jennejohn, DENX Software Engineering, garyj@denx.de.
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 /* sil680.c - ide support functions for the Sil0680A controller */
25
26 /*
27 * The following parameters must be defined in the configuration file
28 * of the target board:
29 *
30 * #define CONFIG_IDE_SIL680
31 *
32 * #define CONFIG_PCI_PNP
33 * NOTE it may also be necessary to define this if the default of 8 is
34 * incorrect for the target board (e.g. the sequoia board requires 0).
35 * #define CONFIG_SYS_PCI_CACHE_LINE_SIZE 0
36 *
37 * #define CONFIG_CMD_IDE
38 * #undef CONFIG_IDE_8xx_DIRECT
39 * #undef CONFIG_IDE_LED
40 * #undef CONFIG_IDE_RESET
41 * #define CONFIG_IDE_PREINIT
42 * #define CONFIG_SYS_IDE_MAXBUS 2 - modify to suit
43 * #define CONFIG_SYS_IDE_MAXDEVICE (CONFIG_SYS_IDE_MAXBUS*2) - modify to suit
44 * #define CONFIG_SYS_ATA_BASE_ADDR 0
45 * #define CONFIG_SYS_ATA_IDE0_OFFSET 0
46 * #define CONFIG_SYS_ATA_IDE1_OFFSET 0
47 * #define CONFIG_SYS_ATA_DATA_OFFSET 0
48 * #define CONFIG_SYS_ATA_REG_OFFSET 0
49 * #define CONFIG_SYS_ATA_ALT_OFFSET 0x0004
50 *
51 * The mapping for PCI IO-space.
52 * NOTE this is the value for the sequoia board. Modify to suit.
53 * #define CONFIG_SYS_PCI0_IO_SPACE 0xE8000000
54 */
55
56 #include <common.h>
57 #include <ata.h>
58 #include <ide.h>
59 #include <pci.h>
60
61 extern ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS];
62
ide_preinit(void)63 int ide_preinit (void)
64 {
65 int status;
66 pci_dev_t devbusfn;
67 int l;
68
69 status = 1;
70 for (l = 0; l < CONFIG_SYS_IDE_MAXBUS; l++) {
71 ide_bus_offset[l] = -ATA_STATUS;
72 }
73 devbusfn = pci_find_device (0x1095, 0x0680, 0);
74 if (devbusfn != -1) {
75 status = 0;
76
77 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0,
78 (u32 *) &ide_bus_offset[0]);
79 ide_bus_offset[0] &= 0xfffffff8;
80 ide_bus_offset[0] += CONFIG_SYS_PCI0_IO_SPACE;
81 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_2,
82 (u32 *) &ide_bus_offset[1]);
83 ide_bus_offset[1] &= 0xfffffff8;
84 ide_bus_offset[1] += CONFIG_SYS_PCI0_IO_SPACE;
85 /* init various things - taken from the Linux driver */
86 /* set PIO mode */
87 pci_write_config_byte(devbusfn, 0x80, 0x00);
88 pci_write_config_byte(devbusfn, 0x84, 0x00);
89 /* IDE0 */
90 pci_write_config_byte(devbusfn, 0xA1, 0x02);
91 pci_write_config_word(devbusfn, 0xA2, 0x328A);
92 pci_write_config_dword(devbusfn, 0xA4, 0x62DD62DD);
93 pci_write_config_dword(devbusfn, 0xA8, 0x43924392);
94 pci_write_config_dword(devbusfn, 0xAC, 0x40094009);
95 /* IDE1 */
96 pci_write_config_byte(devbusfn, 0xB1, 0x02);
97 pci_write_config_word(devbusfn, 0xB2, 0x328A);
98 pci_write_config_dword(devbusfn, 0xB4, 0x62DD62DD);
99 pci_write_config_dword(devbusfn, 0xB8, 0x43924392);
100 pci_write_config_dword(devbusfn, 0xBC, 0x40094009);
101 }
102 return (status);
103 }
104
ide_set_reset(int flag)105 void ide_set_reset (int flag) {
106 return;
107 }
108