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128 lines
3.0 KiB
128 lines
3.0 KiB
/* |
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* Board setup routines for the storcenter |
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* |
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* Copyright 2007 (C) Oyvind Repvik ([email protected]) |
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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 %pOF\n", dev); |
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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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printk(KERN_INFO "IOMEGA StorCenter\n"); |
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} |
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static void __init storcenter_setup_pci(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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} |
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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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mtmsr(mfmsr() | MSR_IP); |
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isync(); |
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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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.discover_phbs = storcenter_setup_pci, |
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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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