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