2 * Board setup routines for the storcenter
4 * Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org)
5 * Copyright 2007 Andy Wilcox, Jon Loeliger
7 * Based on linkstation.c by G. Liakhovetski
9 * This file is licensed under the terms of the GNU General Public License
10 * version 2. This program is licensed "as is" without any warranty of
11 * any kind, whether express or implied.
14 #include <linux/kernel.h>
15 #include <linux/pci.h>
16 #include <linux/initrd.h>
17 #include <linux/of_platform.h>
22 #include <asm/pci-bridge.h>
27 static const struct of_device_id storcenter_of_bus[] __initconst = {
32 static int __init storcenter_device_probe(void)
34 of_platform_bus_probe(NULL, storcenter_of_bus, NULL);
37 machine_device_initcall(storcenter, storcenter_device_probe);
40 static int __init storcenter_add_bridge(struct device_node *dev)
44 struct pci_controller *hose;
47 printk("Adding PCI host bridge %pOF\n", dev);
49 hose = pcibios_alloc_controller(dev);
53 bus_range = of_get_property(dev, "bus-range", &len);
54 hose->first_busno = bus_range ? bus_range[0] : 0;
55 hose->last_busno = bus_range ? bus_range[1] : 0xff;
57 setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0);
59 /* Interpret the "ranges" property */
60 /* This also maps the I/O region and sets isa_io/mem_base */
61 pci_process_bridge_OF_ranges(hose, dev, 1);
67 static void __init storcenter_setup_arch(void)
69 struct device_node *np;
71 /* Lookup PCI host bridges */
72 for_each_compatible_node(np, "pci", "mpc10x-pci")
73 storcenter_add_bridge(np);
75 printk(KERN_INFO "IOMEGA StorCenter\n");
79 * Interrupt setup and service. Interrupts on the turbostation come
80 * from the four PCI slots plus onboard 8241 devices: I2C, DUART.
82 static void __init storcenter_init_IRQ(void)
86 mpic = mpic_alloc(NULL, 0, 0, 16, 0, " OpenPIC ");
90 * 16 Serial Interrupts followed by 16 Internal Interrupts.
91 * I2C is the second internal, so it is at 17, 0x11020.
93 mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200);
94 mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000);
99 static void __noreturn storcenter_restart(char *cmd)
103 /* Set exception prefix high - to the firmware */
104 mtmsr(mfmsr() | MSR_IP);
107 /* Wait for reset to happen */
111 static int __init storcenter_probe(void)
113 return of_machine_is_compatible("iomega,storcenter");
116 define_machine(storcenter){
117 .name = "IOMEGA StorCenter",
118 .probe = storcenter_probe,
119 .setup_arch = storcenter_setup_arch,
120 .init_IRQ = storcenter_init_IRQ,
121 .get_irq = mpic_get_irq,
122 .restart = storcenter_restart,
123 .calibrate_decr = generic_calibrate_decr,