124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
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/*
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* Board setup routines for the storcenter
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*
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* Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org)
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* Copyright 2007 Andy Wilcox, Jon Loeliger
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*
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* Based on linkstation.c by G. Liakhovetski
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of
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* any kind, whether express or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/initrd.h>
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#include <linux/of_platform.h>
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#include <asm/time.h>
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#include <asm/prom.h>
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#include <asm/mpic.h>
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#include <asm/pci-bridge.h>
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#include "mpc10x.h"
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static const struct of_device_id storcenter_of_bus[] __initconst = {
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{ .name = "soc", },
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{},
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};
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static int __init storcenter_device_probe(void)
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{
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of_platform_bus_probe(NULL, storcenter_of_bus, NULL);
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return 0;
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}
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machine_device_initcall(storcenter, storcenter_device_probe);
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static int __init storcenter_add_bridge(struct device_node *dev)
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{
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#ifdef CONFIG_PCI
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int len;
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struct pci_controller *hose;
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const int *bus_range;
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printk("Adding PCI host bridge %s\n", dev->full_name);
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hose = pcibios_alloc_controller(dev);
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if (hose == NULL)
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return -ENOMEM;
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bus_range = of_get_property(dev, "bus-range", &len);
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hose->first_busno = bus_range ? bus_range[0] : 0;
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hose->last_busno = bus_range ? bus_range[1] : 0xff;
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setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0);
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/* Interpret the "ranges" property */
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/* This also maps the I/O region and sets isa_io/mem_base */
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pci_process_bridge_OF_ranges(hose, dev, 1);
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#endif
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return 0;
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}
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static void __init storcenter_setup_arch(void)
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{
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struct device_node *np;
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/* Lookup PCI host bridges */
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for_each_compatible_node(np, "pci", "mpc10x-pci")
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storcenter_add_bridge(np);
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printk(KERN_INFO "IOMEGA StorCenter\n");
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}
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/*
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* Interrupt setup and service. Interrupts on the turbostation come
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* from the four PCI slots plus onboard 8241 devices: I2C, DUART.
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*/
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static void __init storcenter_init_IRQ(void)
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{
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struct mpic *mpic;
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mpic = mpic_alloc(NULL, 0, 0, 16, 0, " OpenPIC ");
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BUG_ON(mpic == NULL);
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/*
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* 16 Serial Interrupts followed by 16 Internal Interrupts.
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* I2C is the second internal, so it is at 17, 0x11020.
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*/
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mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200);
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mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000);
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mpic_init(mpic);
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}
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static void __noreturn storcenter_restart(char *cmd)
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{
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local_irq_disable();
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/* Set exception prefix high - to the firmware */
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_nmask_and_or_msr(0, MSR_IP);
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/* Wait for reset to happen */
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for (;;) ;
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}
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static int __init storcenter_probe(void)
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{
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return of_machine_is_compatible("iomega,storcenter");
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}
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define_machine(storcenter){
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.name = "IOMEGA StorCenter",
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.probe = storcenter_probe,
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.setup_arch = storcenter_setup_arch,
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.init_IRQ = storcenter_init_IRQ,
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.get_irq = mpic_get_irq,
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.restart = storcenter_restart,
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.calibrate_decr = generic_calibrate_decr,
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};
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