This sb800 code is derived from sb700.

Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Acked-by: Stefan Reinauer <stepan@coreboot.org>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6277 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 83 insertions, 0 deletions

diff --git a/src/southbridge/amd/sb800/ide.c b/src/southbridge/amd/sb800/ide.c
new file mode 100644
index 0000000000..eb287f2cb2
--- /dev/null
+++ b/src/southbridge/amd/sb800/ide.c
@@ -0,0 +1,83 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "sb800.h"
+
+static void ide_init(struct device *dev)
+{
+	struct southbridge_amd_sb800_config *conf;
+	/* Enable ide devices so the linux ide driver will work */
+	u32 dword;
+	u8 byte;
+
+	conf = dev->chip_info;
+
+	/* RPR9.1 disable MSI */
+	/* TODO: For A14, it should set as 1. I doubt it. */
+	dword = pci_read_config32(dev, 0x70);
+	dword &= ~(1 << 16);
+	pci_write_config32(dev, 0x70, dword);
+
+	/* Ultra DMA mode */
+	/* enable UDMA */
+	byte = pci_read_config8(dev, 0x54);
+	byte |= 1 << 0;
+	pci_write_config8(dev, 0x54, byte);
+
+	/* Enable I/O Access&& Bus Master */
+	dword = pci_read_config16(dev, 0x4);
+	dword |= 1 << 2;
+	pci_write_config16(dev, 0x4, dword);
+
+	/* set ide as primary, if you want to boot from IDE, you'd better set it
+	 * in mainboard/Config.lb */
+	if (conf->boot_switch_sata_ide == 1) {
+		byte = pci_read_config8(dev, 0xAD);
+		byte |= 1 << 4;
+		pci_write_config8(dev, 0xAD, byte);
+	}
+
+#if CONFIG_PCI_ROM_RUN == 1
+	pci_dev_init(dev);
+#endif
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = pci_dev_set_subsystem,
+};
+
+static struct device_operations ide_ops = {
+	.read_resources = pci_dev_read_resources,
+	.set_resources = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init = ide_init,
+	.scan_bus = 0,
+	.ops_pci = &lops_pci,
+};
+
+static const struct pci_driver ide_driver __pci_driver = {
+	.ops = &ide_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_IDE,
+};