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authorLennert Buytenhek <buytenh@wantstofly.org>2006-03-28 21:18:54 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-03-28 21:18:54 +0100
commitc4713074375c61f939310b04e92090afe29810dc (patch)
treef09441eac8bd29a4a48f0360e1207d6def04b5fd /arch/arm/mach-ixp23xx/roadrunner.c
parente9937d4b0a9382c4c78411d1c53e62be396ee9a9 (diff)
[ARM] 3388/1: ixp23xx: add core ixp23xx support
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>
Diffstat (limited to 'arch/arm/mach-ixp23xx/roadrunner.c')
-rw-r--r--arch/arm/mach-ixp23xx/roadrunner.c164
1 files changed, 164 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp23xx/roadrunner.c b/arch/arm/mach-ixp23xx/roadrunner.c
new file mode 100644
index 00000000000..43c14e74079
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/roadrunner.c
@@ -0,0 +1,164 @@
+/*
+ * 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/config.h>
+#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.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 <asm/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/irq.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(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 roadrunner_pci_preinit(void)
+{
+ set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQT_LOW);
+ set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQT_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 void __init roadrunner_init(void)
+{
+ physmap_configure(0x90000000, 0x04000000, 2, NULL);
+
+ /*
+ * 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 */
+ .phys_io = IXP23XX_PERIPHERAL_PHYS,
+ .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
+ .map_io = ixp23xx_map_io,
+ .init_irq = ixp23xx_init_irq,
+ .timer = &ixp23xx_timer,
+ .boot_params = 0x00000100,
+ .init_machine = roadrunner_init,
+MACHINE_END