/* * Board setup routines for the storcenter * * Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org) * Copyright 2007 Andy Wilcox, Jon Loeliger * * Based on linkstation.c by G. Liakhovetski * * 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/pci.h> #include <linux/initrd.h> #include <linux/of_platform.h> #include <asm/time.h> #include <asm/mpic.h> #include <asm/pci-bridge.h> #include "mpc10x.h" static const struct of_device_id storcenter_of_bus[] __initconst = { { .name = "soc", }, {}, }; static int __init storcenter_device_probe(void) { of_platform_bus_probe(NULL, storcenter_of_bus, NULL); return 0; } machine_device_initcall(storcenter, storcenter_device_probe); static int __init storcenter_add_bridge(struct device_node *dev) { #ifdef CONFIG_PCI int len; struct pci_controller *hose; const int *bus_range; printk("Adding PCI host bridge %pOF\n", dev); hose = pcibios_alloc_controller(dev); if (hose == NULL) return -ENOMEM; bus_range = of_get_property(dev, "bus-range", &len); hose->first_busno = bus_range ? bus_range[0] : 0; hose->last_busno = bus_range ? bus_range[1] : 0xff; setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0); /* Interpret the "ranges" property */ /* This also maps the I/O region and sets isa_io/mem_base */ pci_process_bridge_OF_ranges(hose, dev, 1); #endif return 0; } static void __init storcenter_setup_arch(void) { printk(KERN_INFO "IOMEGA StorCenter\n"); } static void __init storcenter_setup_pci(void) { struct device_node *np; /* Lookup PCI host bridges */ for_each_compatible_node(np, "pci", "mpc10x-pci") storcenter_add_bridge(np); } /* * Interrupt setup and service. Interrupts on the turbostation come * from the four PCI slots plus onboard 8241 devices: I2C, DUART. */ static void __init storcenter_init_IRQ(void) { struct mpic *mpic; mpic = mpic_alloc(NULL, 0, 0, 16, 0, " OpenPIC "); BUG_ON(mpic == NULL); /* * 16 Serial Interrupts followed by 16 Internal Interrupts. * I2C is the second internal, so it is at 17, 0x11020. */ mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200); mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000); mpic_init(mpic); } static void __noreturn storcenter_restart(char *cmd) { local_irq_disable(); /* Set exception prefix high - to the firmware */ mtmsr(mfmsr() | MSR_IP); isync(); /* Wait for reset to happen */ for (;;) ; } static int __init storcenter_probe(void) { return of_machine_is_compatible("iomega,storcenter"); } define_machine(storcenter){ .name = "IOMEGA StorCenter", .probe = storcenter_probe, .setup_arch = storcenter_setup_arch, .discover_phbs = storcenter_setup_pci, .init_IRQ = storcenter_init_IRQ, .get_irq = mpic_get_irq, .restart = storcenter_restart, .calibrate_decr = generic_calibrate_decr, };