Support for LinkStation / KuroBox HD and HG PPC models

This patch is based on the port by Mihai Georgian (see linkstation.c for
Copyright information) and implements support for LinkStation / KuroBox HD
and HG PPC models from Buffalo Technology, whereby HD is deactivated at
the moment, pending network driver fixing.

Notice to users: this is pretty much a barebone port. Support for network
on HG models is already in the U-Boot mainline, but you might also want
patches to switch fan / phy modes depending on the negotiated ethernet
parameters. This patch also doesn't support console switching, booting EM
mode, Buffalo specific ext2 magic number. So, if you want to use any of
those, you need additional patches. Otherwise this patche provides a fully
functional u-boot with a network console on your system.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>

1 files changed, 99 insertions, 0 deletions

diff --git a/board/linkstation/ide.c b/board/linkstation/ide.c
new file mode 100644
index 0000000..37d9b57
--- /dev/null
+++ b/board/linkstation/ide.c
@@ -0,0 +1,99 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@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
+ *
+ */
+/* ide.c - ide support functions */
+
+
+#include <common.h>
+
+#ifdef CONFIG_CMD_IDE
+#include <ata.h>
+#include <ide.h>
+#include <pci.h>
+
+#define IT8212_PCI_CpuCONTROL		0x5e
+#define IT8212_PCI_PciModeCONTROL	0x50
+#define IT8212_PCI_IdeIoCONFIG		0x40
+#define IT8212_PCI_IdeBusSkewCONTROL	0x4c
+#define IT8212_PCI_IdeDrivingCURRENT	0x42
+
+extern ulong ide_bus_offset[CFG_IDE_MAXBUS];
+extern struct pci_controller hose;
+
+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(PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_SII_680, 0);
+	if (devbusfn == -1)
+		devbusfn = pci_find_device(PCI_VENDOR_ID_ITE,PCI_DEVICE_ID_ITE_8212,0);
+	if (devbusfn != -1) {
+		status = 0;
+
+		pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0,
+							   (u32 *) &ide_bus_offset[0]);
+		ide_bus_offset[0] &= 0xfffffffe;
+		ide_bus_offset[0] = pci_hose_bus_to_phys(&hose,
+							 ide_bus_offset[0] & 0xfffffffe,
+							 PCI_REGION_IO);
+		pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_2,
+				      (u32 *) &ide_bus_offset[1]);
+		ide_bus_offset[1] &= 0xfffffffe;
+		ide_bus_offset[1] = pci_hose_bus_to_phys(&hose,
+							 ide_bus_offset[1] & 0xfffffffe,
+							 PCI_REGION_IO);
+	}
+
+	if (pci_find_device (PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8212, 0) != -1) {
+		pci_write_config_byte(devbusfn, IT8212_PCI_CpuCONTROL, 0x01);
+		pci_write_config_byte(devbusfn, IT8212_PCI_PciModeCONTROL, 0x00);
+		pci_write_config_word(devbusfn, PCI_COMMAND, 0x0047);
+#ifdef CONFIG_IT8212_SECONDARY_ENABLE
+		pci_write_config_word(devbusfn, IT8212_PCI_IdeIoCONFIG, 0xA0F3);
+#else
+		pci_write_config_word(devbusfn, IT8212_PCI_IdeIoCONFIG, 0x8031);
+#endif
+		pci_write_config_dword(devbusfn, IT8212_PCI_IdeBusSkewCONTROL, 0x02040204);
+/* __LS_COMMENT__ BUFFALO changed 2004.11.10  changed for EMI */
+        pci_write_config_byte(devbusfn, IT8212_PCI_IdeDrivingCURRENT, 0x36); /* 10mA */
+/*      pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x09); */ /* 4mA */
+/*      pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x12); */ /* 6mA */
+/*      pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x24); */ /* 6mA,2mA */
+/*      pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x2D); */ /* 8mA,4mA */
+        pci_write_config_byte(devbusfn, PCI_LATENCY_TIMER, 0x00);
+	}
+
+	return (status);
+}
+
+void ide_set_reset (int flag) {
+	return;
+}
+
+#endif /* CONFIG_CMD_IDE */