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authorGary Jennejohn <gary.jennejohn@freenet.de>2007-08-31 14:29:04 +0200
committerWolfgang Denk <wd@denx.de>2007-09-06 23:53:11 +0200
commit041a2554ad619e80dce520c1a33210affcb6a3f2 (patch)
treec83bb7caf1580e3f92a5be92cd1f3a8bdc1090df /drivers/sil680.c
parent1d1ab638f8b5961e4972d29394e573afb39667be (diff)
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Add support for Sil680 IDE controller.
o add drivers/sil680.c to support the Sil680 IDE-controller. o drivers/Makefile: add sil680.o. Signed-off-by: Gary Jennejohn <garyj@denx.de>
Diffstat (limited to 'drivers/sil680.c')
-rw-r--r--drivers/sil680.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/sil680.c b/drivers/sil680.c
new file mode 100644
index 0000000..a6143df
--- /dev/null
+++ b/drivers/sil680.c
@@ -0,0 +1,110 @@
+/*
+ * (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 CFG_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 CFG_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 CFG_IDE_MAXBUS 2 - modify to suit
+ * #define CFG_IDE_MAXDEVICE (CFG_IDE_MAXBUS*2) - modify to suit
+ * #define CFG_ATA_BASE_ADDR 0
+ * #define CFG_ATA_IDE0_OFFSET 0
+ * #define CFG_ATA_IDE1_OFFSET 0
+ * #define CFG_ATA_DATA_OFFSET 0
+ * #define CFG_ATA_REG_OFFSET 0
+ * #define CFG_ATA_ALT_OFFSET 0x0004
+ *
+ * The mapping for PCI IO-space.
+ * NOTE this is the value for the sequoia board. Modify to suit.
+ * #define CFG_PCI0_IO_SPACE 0xE8000000
+ */
+
+#include <common.h>
+#if defined(CFG_IDE_SIL680)
+#include <ata.h>
+#include <ide.h>
+#include <pci.h>
+
+extern ulong ide_bus_offset[CFG_IDE_MAXBUS];
+
+int ide_preinit (void)
+{
+ int status;
+ pci_dev_t devbusfn;
+ int l;
+
+ status = 1;
+ for (l = 0; l < CFG_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] += CFG_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] += CFG_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;
+}
+
+#endif /* CFG_IDE_SIL680 */