- Cleanups on the romcc side including a pci interface that uses

  fewer registers, and is easier to hardcode.


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@838 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 65 insertions, 0 deletions

diff --git a/src/southbridge/amd/amd8111/amd8111_ide.c b/src/southbridge/amd/amd8111/amd8111_ide.c
new file mode 100644
index 0000000000..f351606989
--- /dev/null
+++ b/src/southbridge/amd/amd8111/amd8111_ide.c
@@ -0,0 +1,65 @@
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+
+static void ide_init(struct device *dev)
+{
+
+	/* Enable ide devices so the linux ide driver will work */
+	uint16_t word;
+	int enable_a=1, enable_b=1;
+
+
+        printk_debug("ide_init\n");
+
+	pci_read_config_word(dev, 0x40, &word);
+	/* Ensure prefetch is disabled */
+	word &= ~((1 << 15) | (1 << 13));
+	if (enable_b) {
+		/* Enable secondary ide interface */
+		word |= (1<<0);
+		printk_debug("IDE1 ");
+	}
+	if (enable_a) {
+		/* Enable primary ide interface */
+		word |= (1<<1);
+		printk_debug("IDE0 ");
+	}
+
+	word |= (1<<12);
+	word |= (1<<14);
+
+	pci_write_config_word(dev, 0x40, word);
+
+	word = 0x0f;
+	pci_write_config_word(dev, 0x42, word);
+
+	/* The AMD768 has a bug where the BM DMA address must be
+	 * 256 byte aligned while it is only 16 bytes long.
+	 * Hard code this to a valid address below 0x1000
+	 * where automatic port address assignment starts.
+	 * FIXME: I assume the 8111 does the same thing. We should
+	 * clarify. stepan@suse.de
+	 */
+	pci_write_config_dword(dev, 0x20, 0xf01);
+
+	pci_write_config_dword(dev, 0x48, 0x205e5e5e);
+	word = 0x06a;
+	pci_write_config_word(dev, 0x4c, word);
+}
+
+static struct device_operations ide_ops  = {
+	.read_resources = pci_dev_read_resources,
+	.set_resources  = pci_dev_set_resources,
+	.init = ide_init,
+	.scan_bus = 0,
+};
+
+static struct pci_driver ide_driver __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_AMD,
+	.device = PCI_DEVICE_ID_AMD_8111_IDE,
+};
+