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-rw-r--r--arch/arm/mach-ixp23xx/roadrunner.c181
1 files changed, 181 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp23xx/roadrunner.c b/arch/arm/mach-ixp23xx/roadrunner.c
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+++ b/arch/arm/mach-ixp23xx/roadrunner.c
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+/*
+ * arch/arm/mach-ixp23xx/roadrunner.c
+ *
+ * RoadRunner board-specific routines
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2005 (c) MontaVista Software, Inc.
+ *
+ * Based on 2.4 code Copyright 2005 (c) ADI Engineering Corporation
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/bitops.h>
+#include <linux/ioport.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/pci.h>
+
+/*
+ * Interrupt mapping
+ */
+#define INTA IRQ_ROADRUNNER_PCI_INTA
+#define INTB IRQ_ROADRUNNER_PCI_INTB
+#define INTC IRQ_ROADRUNNER_PCI_INTC
+#define INTD IRQ_ROADRUNNER_PCI_INTD
+
+#define INTC_PIN IXP23XX_GPIO_PIN_11
+#define INTD_PIN IXP23XX_GPIO_PIN_12
+
+static int __init roadrunner_map_irq(const struct pci_dev *dev, u8 idsel,
+ u8 pin)
+{
+ static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
+ static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
+ static int usb_irq[] = {INTB, INTC, INTD, -1};
+ static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
+ static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};
+
+ switch(dev->bus->number) {
+ case 0:
+ switch(dev->devfn) {
+ case 0x0: // PCI-PCI bridge
+ break;
+ case 0x8: // PCI Card Slot
+ return pci_card_slot_irq[pin - 1];
+ case 0x10: // PMC Slot
+ return pmc_card_slot_irq[pin - 1];
+ case 0x18: // PMC Slot Secondary Agent
+ break;
+ case 0x20: // IXP Processor
+ break;
+ default:
+ return NO_IRQ;
+ }
+ break;
+
+ case 1:
+ switch(dev->devfn) {
+ case 0x0: // IDE Controller
+ return (pin == 1) ? INTC : -1;
+ case 0x8: // USB fun 0
+ case 0x9: // USB fun 1
+ case 0xa: // USB fun 2
+ return usb_irq[pin - 1];
+ case 0x10: // Mini PCI 1
+ return mini_pci_1_irq[pin-1];
+ case 0x18: // Mini PCI 2
+ return mini_pci_2_irq[pin-1];
+ case 0x20: // MEM slot
+ return (pin == 1) ? INTA : -1;
+ default:
+ return NO_IRQ;
+ }
+ break;
+
+ default:
+ return NO_IRQ;
+ }
+
+ return NO_IRQ;
+}
+
+static void __init roadrunner_pci_preinit(void)
+{
+ irq_set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQ_TYPE_LEVEL_LOW);
+ irq_set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQ_TYPE_LEVEL_LOW);
+
+ ixp23xx_pci_preinit();
+}
+
+static struct hw_pci roadrunner_pci __initdata = {
+ .nr_controllers = 1,
+ .preinit = roadrunner_pci_preinit,
+ .setup = ixp23xx_pci_setup,
+ .scan = ixp23xx_pci_scan_bus,
+ .map_irq = roadrunner_map_irq,
+};
+
+static int __init roadrunner_pci_init(void)
+{
+ if (machine_is_roadrunner())
+ pci_common_init(&roadrunner_pci);
+
+ return 0;
+};
+
+subsys_initcall(roadrunner_pci_init);
+
+static struct physmap_flash_data roadrunner_flash_data = {
+ .width = 2,
+};
+
+static struct resource roadrunner_flash_resource = {
+ .start = 0x90000000,
+ .end = 0x93ffffff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device roadrunner_flash = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = &roadrunner_flash_data,
+ },
+ .num_resources = 1,
+ .resource = &roadrunner_flash_resource,
+};
+
+static void __init roadrunner_init(void)
+{
+ platform_device_register(&roadrunner_flash);
+
+ /*
+ * Mark flash as writeable
+ */
+ IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
+
+ ixp23xx_sys_init();
+}
+
+MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
+ /* Maintainer: Deepak Saxena */
+ .map_io = ixp23xx_map_io,
+ .init_irq = ixp23xx_init_irq,
+ .timer = &ixp23xx_timer,
+ .atag_offset = 0x100,
+ .init_machine = roadrunner_init,
+ .restart = ixp23xx_restart,
+MACHINE_END