Add support for the AXUS TC320 thin client.

This board uses nearly the same devices as the BCOM Winnet100, so most of
the new code here is from the BCOM Winnet100. They differ in the IRQ routing
table only.

BTW: The AXUS board uses standard DIMM memory and can be run at 100MHz SDRAM
clock speed (it runs reliably here since month).

Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2898 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 122 insertions, 0 deletions

diff --git a/src/mainboard/axus/tc320/irq_tables.c b/src/mainboard/axus/tc320/irq_tables.c
new file mode 100644
index 0000000000..32fa002960
--- /dev/null
+++ b/src/mainboard/axus/tc320/irq_tables.c
@@ -0,0 +1,122 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2007 Juergen Beisert <juergen@kreuzholzen.de>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/**
+ * @file
+ * Interrupt routing description for the AXUS TC320 board.
+ * It was not possible to read back the PIRQ table. There was no BIOS to ask
+ * for it, only a bootloader for an embedded OS.
+ * But with the method described here:
+ *    http://linuxbios.org/Creating_Valid_IRQ_Tables
+ * it was possible to detect the physical IRQ routing on this board.
+ *
+ * This is the physical routing on this board:
+ *
+ *    IRQ          5530       USB     Network
+ * controller  northbridge  device     device
+ *                          00.13.0   00.0e.00
+ * --------------------------------------------
+ *    11          INTA#      INTA#      n.c.
+ *    15          INTB#       n.c.     INTA#
+ *                INTC#       n.c.      n.c.
+ *                INTD#       n.c.      n.c.
+ */
+
+#include <arch/pirq_routing.h>
+
+#define INT_A 0x01
+#define INT_B 0x02
+#define INT_C 0x03
+#define INT_D 0x04
+
+/*
+ * The USB controller should be connected to IRQ11,
+ * the network controller should be connected to IRQ15.
+ */
+
+#define IRQ_BITMAP_LINK0 0x0800
+#define IRQ_BITMAP_LINK1 0x8000
+#define IRQ_BITMAP_LINK2 0x0000
+#define IRQ_BITMAP_LINK3 0x0000
+
+/** Reserved interrupt channels for exclusive PCI usage. */
+#define IRQ_DEVOTED_TO_PCI (IRQ_BITMAP_LINK0 | IRQ_BITMAP_LINK1)
+
+/**
+ * Routing description.
+ * Documentation at: http://www.microsoft.com/whdc/archive/pciirq.mspx
+ */
+const struct irq_routing_table intel_irq_routing_table = {
+	.signature = PIRQ_SIGNATURE,	/* PIRQ signature */
+	.version = PIRQ_VERSION,	/* PIRQ version */
+	.size = 32 + 16 * IRQ_SLOT_COUNT,/* Max. IRQ_SLOT_COUNT devices */
+	.rtr_bus = 0x00,		/* Interrupt router bus */
+	.rtr_devfn = (0x12 << 3) | 0x0,	/* Interrupt router device */
+	.exclusive_irqs = IRQ_DEVOTED_TO_PCI,	/* IRQs devoted to PCI */
+	.rtr_vendor = 0x1078,		/* Vendor */
+	.rtr_device = 0x0100,		/* Device */
+	.miniport_data = 0,		/* Crap (miniport) */
+	.checksum = 0xe3,		/* Checksum */
+	.slots = {
+		/*
+		 * Definition for "slot#1". There is no real slot,
+		 * the USB device is embedded...
+		 */
+		[0] = {
+			.bus = 0x00,
+			.devfn = (0x13 << 3) | 0x0,
+			.irq = {
+				/*      Link   Bitmap */
+				[0] = { INT_A, IRQ_BITMAP_LINK0 },
+				[1] = { INT_B, IRQ_BITMAP_LINK1 },
+				[2] = { INT_C, IRQ_BITMAP_LINK2 },
+				[3] = { INT_D, IRQ_BITMAP_LINK3 },
+			},
+			.slot = 0x0,
+		},
+		/*
+		 * Definition for "slot#2". There is no real slot,
+		 * the network device is soldered...
+		 */
+		[1] = {
+			.bus = 0x00,
+			.devfn = (0x0e << 3) | 0x0,
+			.irq = {
+				/*      Link   Bitmap */
+				[0] = { INT_B, IRQ_BITMAP_LINK1 },
+				[1] = { INT_C, IRQ_BITMAP_LINK2 },
+				[2] = { INT_D, IRQ_BITMAP_LINK3 },
+				[3] = { INT_A, IRQ_BITMAP_LINK0	},
+			},
+			.slot = 0x0,
+		}
+	}
+};
+
+/**
+ * Copy the IRQ routing table to memory.
+ *
+ * @param[in] addr Destination address (between 0xF0000...0x100000).
+ * @return TODO.
+ */
+unsigned long write_pirq_routing_table(unsigned long addr)
+{
+	return copy_pirq_routing_table(addr);
+}