2 * This file is part of the coreboot project.
4 * Copyright (C) 2007 Juergen Beisert <juergen@kreuzholzen.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 * Interrupt routing description for the AXUS TC320 board.
24 * It was not possible to read back the PIRQ table. There was no BIOS to ask
25 * for it, only a bootloader for an embedded OS.
26 * But with the method described here:
27 * http://coreboot.org/Creating_Valid_IRQ_Tables
28 * it was possible to detect the physical IRQ routing on this board.
30 * This is the physical routing on this board:
32 * IRQ 5530 USB Network
33 * controller northbridge device device
35 * --------------------------------------------
42 #include <arch/pirq_routing.h>
50 * The USB controller should be connected to IRQ11,
51 * the network controller should be connected to IRQ15.
54 #define IRQ_BITMAP_LINK0 0x0800
55 #define IRQ_BITMAP_LINK1 0x8000
56 #define IRQ_BITMAP_LINK2 0x0000
57 #define IRQ_BITMAP_LINK3 0x0000
59 /** Reserved interrupt channels for exclusive PCI usage. */
60 #define IRQ_DEVOTED_TO_PCI (IRQ_BITMAP_LINK0 | IRQ_BITMAP_LINK1)
63 * Routing description.
64 * Documentation at: http://www.microsoft.com/whdc/archive/pciirq.mspx
66 const struct irq_routing_table intel_irq_routing_table = {
67 .signature = PIRQ_SIGNATURE, /* PIRQ signature */
68 .version = PIRQ_VERSION, /* PIRQ version */
69 .size = 32 + 16 * IRQ_SLOT_COUNT,/* Max. IRQ_SLOT_COUNT devices */
70 .rtr_bus = 0x00, /* Interrupt router bus */
71 .rtr_devfn = (0x12 << 3) | 0x0, /* Interrupt router device */
72 .exclusive_irqs = IRQ_DEVOTED_TO_PCI, /* IRQs devoted to PCI */
73 .rtr_vendor = 0x1078, /* Vendor */
74 .rtr_device = 0x0100, /* Device */
75 .miniport_data = 0, /* Crap (miniport) */
76 .checksum = 0xe3, /* Checksum */
79 * Definition for "slot#1". There is no real slot,
80 * the USB device is embedded...
84 .devfn = (0x13 << 3) | 0x0,
87 [0] = { INT_A, IRQ_BITMAP_LINK0 },
88 [1] = { INT_B, IRQ_BITMAP_LINK1 },
89 [2] = { INT_C, IRQ_BITMAP_LINK2 },
90 [3] = { INT_D, IRQ_BITMAP_LINK3 },
95 * Definition for "slot#2". There is no real slot,
96 * the network device is soldered...
100 .devfn = (0x0e << 3) | 0x0,
103 [0] = { INT_B, IRQ_BITMAP_LINK1 },
104 [1] = { INT_C, IRQ_BITMAP_LINK2 },
105 [2] = { INT_D, IRQ_BITMAP_LINK3 },
106 [3] = { INT_A, IRQ_BITMAP_LINK0 },
114 * Copy the IRQ routing table to memory.
116 * @param[in] addr Destination address (between 0xF0000...0x100000).
119 unsigned long write_pirq_routing_table(unsigned long addr)
121 return copy_pirq_routing_table(addr);