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108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/*
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* (C) Copyright 2007
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* Gary Jennejohn, DENX Software Engineering, garyj@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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/* sil680.c - ide support functions for the Sil0680A controller */
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/*
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* The following parameters must be defined in the configuration file
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* of the target board:
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*
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* #define CONFIG_IDE_SIL680
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*
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* #define CONFIG_PCI_PNP
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* NOTE it may also be necessary to define this if the default of 8 is
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* incorrect for the target board (e.g. the sequoia board requires 0).
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* #define CONFIG_SYS_PCI_CACHE_LINE_SIZE 0
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*
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* #define CONFIG_CMD_IDE
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* #undef CONFIG_IDE_8xx_DIRECT
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* #undef CONFIG_IDE_LED
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* #undef CONFIG_IDE_RESET
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* #define CONFIG_IDE_PREINIT
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* #define CONFIG_SYS_IDE_MAXBUS 2 - modify to suit
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* #define CONFIG_SYS_IDE_MAXDEVICE (CONFIG_SYS_IDE_MAXBUS*2) - modify to suit
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* #define CONFIG_SYS_ATA_BASE_ADDR 0
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* #define CONFIG_SYS_ATA_IDE0_OFFSET 0
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* #define CONFIG_SYS_ATA_IDE1_OFFSET 0
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* #define CONFIG_SYS_ATA_DATA_OFFSET 0
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* #define CONFIG_SYS_ATA_REG_OFFSET 0
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* #define CONFIG_SYS_ATA_ALT_OFFSET 0x0004
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*
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* The mapping for PCI IO-space.
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* NOTE this is the value for the sequoia board. Modify to suit.
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* #define CONFIG_SYS_PCI0_IO_SPACE 0xE8000000
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*/
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#include <common.h>
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#include <ata.h>
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#include <ide.h>
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#include <pci.h>
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extern ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS];
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int ide_preinit (void)
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{
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int status;
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pci_dev_t devbusfn;
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int l;
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status = 1;
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for (l = 0; l < CONFIG_SYS_IDE_MAXBUS; l++) {
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ide_bus_offset[l] = -ATA_STATUS;
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}
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devbusfn = pci_find_device (0x1095, 0x0680, 0);
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if (devbusfn != -1) {
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status = 0;
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pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0,
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(u32 *) &ide_bus_offset[0]);
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ide_bus_offset[0] &= 0xfffffff8;
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ide_bus_offset[0] += CONFIG_SYS_PCI0_IO_SPACE;
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pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_2,
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(u32 *) &ide_bus_offset[1]);
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ide_bus_offset[1] &= 0xfffffff8;
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ide_bus_offset[1] += CONFIG_SYS_PCI0_IO_SPACE;
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/* init various things - taken from the Linux driver */
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/* set PIO mode */
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pci_write_config_byte(devbusfn, 0x80, 0x00);
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pci_write_config_byte(devbusfn, 0x84, 0x00);
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/* IDE0 */
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pci_write_config_byte(devbusfn, 0xA1, 0x02);
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pci_write_config_word(devbusfn, 0xA2, 0x328A);
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pci_write_config_dword(devbusfn, 0xA4, 0x62DD62DD);
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pci_write_config_dword(devbusfn, 0xA8, 0x43924392);
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pci_write_config_dword(devbusfn, 0xAC, 0x40094009);
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/* IDE1 */
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pci_write_config_byte(devbusfn, 0xB1, 0x02);
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pci_write_config_word(devbusfn, 0xB2, 0x328A);
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pci_write_config_dword(devbusfn, 0xB4, 0x62DD62DD);
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pci_write_config_dword(devbusfn, 0xB8, 0x43924392);
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pci_write_config_dword(devbusfn, 0xBC, 0x40094009);
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}
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return (status);
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}
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void ide_set_reset (int flag) {
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return;
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}
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