c471307437
Patch from Lennert Buytenhek This patch adds support for the Intel ixp23xx series of CPUs. The ixp23xx is an XSC3 based CPU with 512K of L2 cache, a 64bit 66MHz PCI interface, two DDR RAM interfaces, QDR RAM interfaces, two gigabit MACs, two 10/100 MACs, expansion bus, four microengines, a Media and Switch Fabric unit almost identical to the one on the ixp2400, two xscale (8250ish) UARTs and a bunch of other stuff. This patch adds the core ixp23xx support code, and support for the ADI Engineering Roadrunner, Intel IXDP2351, and IP Fabrics Double Espresso platforms. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
165 lines
3.9 KiB
C
165 lines
3.9 KiB
C
/*
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* arch/arm/mach-ixp23xx/roadrunner.c
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*
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* RoadRunner board-specific routines
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*
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* Author: Deepak Saxena <dsaxena@plexity.net>
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*
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* Copyright 2005 (c) MontaVista Software, Inc.
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*
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* Based on 2.4 code Copyright 2005 (c) ADI Engineering Corporation
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/serial.h>
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#include <linux/tty.h>
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#include <linux/bitops.h>
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#include <linux/ioport.h>
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#include <linux/serial.h>
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#include <linux/serial_8250.h>
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#include <linux/serial_core.h>
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#include <linux/device.h>
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#include <linux/mm.h>
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#include <linux/pci.h>
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#include <linux/mtd/physmap.h>
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#include <asm/types.h>
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#include <asm/setup.h>
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#include <asm/memory.h>
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#include <asm/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#include <asm/system.h>
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#include <asm/tlbflush.h>
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#include <asm/pgtable.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/pci.h>
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/*
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* Interrupt mapping
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*/
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#define INTA IRQ_ROADRUNNER_PCI_INTA
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#define INTB IRQ_ROADRUNNER_PCI_INTB
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#define INTC IRQ_ROADRUNNER_PCI_INTC
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#define INTD IRQ_ROADRUNNER_PCI_INTD
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#define INTC_PIN IXP23XX_GPIO_PIN_11
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#define INTD_PIN IXP23XX_GPIO_PIN_12
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static int __init roadrunner_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
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{
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static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
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static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
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static int usb_irq[] = {INTB, INTC, INTD, -1};
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static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
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static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};
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switch(dev->bus->number) {
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case 0:
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switch(dev->devfn) {
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case 0x0: // PCI-PCI bridge
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break;
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case 0x8: // PCI Card Slot
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return pci_card_slot_irq[pin - 1];
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case 0x10: // PMC Slot
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return pmc_card_slot_irq[pin - 1];
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case 0x18: // PMC Slot Secondary Agent
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break;
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case 0x20: // IXP Processor
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break;
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default:
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return NO_IRQ;
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}
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break;
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case 1:
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switch(dev->devfn) {
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case 0x0: // IDE Controller
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return (pin == 1) ? INTC : -1;
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case 0x8: // USB fun 0
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case 0x9: // USB fun 1
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case 0xa: // USB fun 2
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return usb_irq[pin - 1];
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case 0x10: // Mini PCI 1
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return mini_pci_1_irq[pin-1];
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case 0x18: // Mini PCI 2
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return mini_pci_2_irq[pin-1];
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case 0x20: // MEM slot
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return (pin == 1) ? INTA : -1;
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default:
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return NO_IRQ;
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}
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break;
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default:
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return NO_IRQ;
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}
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return NO_IRQ;
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}
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static void roadrunner_pci_preinit(void)
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{
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set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQT_LOW);
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set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQT_LOW);
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ixp23xx_pci_preinit();
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}
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static struct hw_pci roadrunner_pci __initdata = {
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.nr_controllers = 1,
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.preinit = roadrunner_pci_preinit,
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.setup = ixp23xx_pci_setup,
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.scan = ixp23xx_pci_scan_bus,
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.map_irq = roadrunner_map_irq,
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};
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static int __init roadrunner_pci_init(void)
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{
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if (machine_is_roadrunner())
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pci_common_init(&roadrunner_pci);
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return 0;
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};
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subsys_initcall(roadrunner_pci_init);
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static void __init roadrunner_init(void)
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{
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physmap_configure(0x90000000, 0x04000000, 2, NULL);
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/*
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* Mark flash as writeable
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*/
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IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
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IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
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IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
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IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
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ixp23xx_sys_init();
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}
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MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
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/* Maintainer: Deepak Saxena */
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.phys_io = IXP23XX_PERIPHERAL_PHYS,
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.io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
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.map_io = ixp23xx_map_io,
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.init_irq = ixp23xx_init_irq,
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.timer = &ixp23xx_timer,
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.boot_params = 0x00000100,
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.init_machine = roadrunner_init,
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MACHINE_END
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