Add support for RDC R8610 Southbridge

So far it just setups things right for Bifferboard. We may change it
in the future to fit other hardware.

Change-Id: I1c4ccff4e47b9cb9e31a738f038fc4f4ebe59087
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/808
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 118 insertions, 0 deletions

diff --git a/src/southbridge/rdc/r8610/r8610.c b/src/southbridge/rdc/r8610/r8610.c
new file mode 100644
index 0000000000..6b45669295
--- /dev/null
+++ b/src/southbridge/rdc/r8610/r8610.c
@@ -0,0 +1,118 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Rudolf Marek <r.marek@assembler.cz>
+ *
+ * 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 <arch/io.h>
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <pc80/i8259.h>
+#include <stdlib.h>
+
+static const unsigned char enetIrqs[4] = { 10, 0, 0, 0 };
+static const unsigned char usbIrqs[4] = { 15, 14, 0, 0 };
+
+static void pci_routing_fixup(struct device *dev)
+{
+	pci_assign_irqs(0, 0x8, enetIrqs);
+	pci_assign_irqs(0, 0xa, usbIrqs);
+}
+
+static void r8610_init(struct device *dev)
+{
+	device_t nb_dev;
+	u32 tmp;
+
+	printk(BIOS_DEBUG, "r8610 init\n");
+
+	/* clear DMA? */
+	outb(0x4, 0x8);
+	outb(0x4, 0x10);
+
+	outb(0xfc, 0x61);
+
+	/* Set serial base */
+	pci_write_config32(dev, 0x54, 0x3f8);
+	/* serial IRQ disable, LPC disable, COM2 goes to LPC, internal UART for COM1 */
+	pci_write_config32(dev, 0x50, 0x84101012);
+
+	/* Enable internal Port92, enable chipselect for flash */
+	tmp = pci_read_config32(dev, 0x40);
+	pci_write_config32(dev, 0x40, tmp | 0x07FF0600);
+
+	/* buffer strength SB pins */
+	pci_write_config32(dev, 0x5c, 0x2315);
+
+	/*  EHCI 14, OHCI 15, MAC1 disable, MAC0 10, INTD 9, INTC 9, INTB 12, INTA INT10 */
+	pci_write_config32(dev, 0x58, 0xdf0311b3);
+
+	/* USB PHY control */
+	nb_dev = dev_find_device(PCI_VENDOR_ID_RDC,
+				 PCI_DEVICE_ID_RDC_R8610_NB, 0);
+
+	tmp = pci_read_config32(nb_dev, 0xc0);
+	tmp |= 0x40000;
+	pci_write_config32(nb_dev, 0xc0, tmp);
+
+	setup_i8259();
+}
+
+static void r8610_read_resources(device_t dev)
+{
+	struct resource *res;
+
+	pci_dev_read_resources(dev);
+
+	res = new_resource(dev, 1);
+	res->base = 0x0UL;
+	res->size = 0x1000UL;
+	res->limit = 0xffffUL;
+	res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+	/* Reserve space for flash */
+	res = new_resource(dev, 2);
+	res->base = 0xff800000;
+	res->size = 8*1024*1024;
+	res->limit = 0xffffffffUL;
+	res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED |
+		     IORESOURCE_ASSIGNED;
+}
+
+static void southbridge_init(struct device *dev)
+{
+	r8610_init(dev);
+	pci_routing_fixup(dev);
+}
+
+static struct device_operations r8610_sb_ops = {
+	.read_resources   = r8610_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init		  = &southbridge_init,
+	.scan_bus	  = scan_static_bus,
+	.enable           = 0,
+	.ops_pci          = 0,
+};
+
+static const struct pci_driver lpc_driver __pci_driver = {
+	.ops	= &r8610_sb_ops,
+	.vendor = PCI_VENDOR_ID_RDC,
+	.device = PCI_DEVICE_ID_RDC_R8610_SB,
+};
+