/* * Board setup routines for the Buffalo Linkstation / Kurobox Platform. * * Copyright (C) 2006 G. Liakhovetski (g.liakhovetski@gmx.de) * * Based on sandpoint.c by Mark A. Greer * * 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/initrd.h> #include <linux/of_platform.h> #include <asm/time.h> #include <asm/prom.h> #include <asm/mpic.h> #include <asm/pci-bridge.h> #include "mpc10x.h" static const struct of_device_id of_bus_ids[] __initconst = { { .type = "soc", }, { .compatible = "simple-bus", }, {}, }; static int __init declare_of_platform_devices(void) { of_platform_bus_probe(NULL, of_bus_ids, NULL); return 0; } machine_device_initcall(linkstation, declare_of_platform_devices); static int __init linkstation_add_bridge(struct device_node *dev) { #ifdef CONFIG_PCI int len; struct pci_controller *hose; const int *bus_range; printk("Adding PCI host bridge %s\n", dev->full_name); bus_range = of_get_property(dev, "bus-range", &len); if (bus_range == NULL || len < 2 * sizeof(int)) printk(KERN_WARNING "Can't get bus-range for %s, assume" " bus 0\n", dev->full_name); hose = pcibios_alloc_controller(dev); if (hose == NULL) return -ENOMEM; hose->first_busno = bus_range ? bus_range[0] : 0; hose->last_busno = bus_range ? bus_range[1] : 0xff; setup_indirect_pci(hose, 0xfec00000, 0xfee00000, 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 linkstation_setup_arch(void) { struct device_node *np; /* Lookup PCI host bridges */ for_each_compatible_node(np, "pci", "mpc10x-pci") linkstation_add_bridge(np); printk(KERN_INFO "BUFFALO Network Attached Storage Series\n"); printk(KERN_INFO "(C) 2002-2005 BUFFALO INC.\n"); } /* * Interrupt setup and service. Interrupts on the linkstation come * from the four PCI slots plus onboard 8241 devices: I2C, DUART. */ static void __init linkstation_init_IRQ(void) { struct mpic *mpic; mpic = mpic_alloc(NULL, 0, 0, 4, 0, " EPIC "); BUG_ON(mpic == NULL); /* PCI IRQs */ mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200); /* I2C */ mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000); /* ttyS0, ttyS1 */ mpic_assign_isu(mpic, 2, mpic->paddr + 0x11100); mpic_init(mpic); } extern void avr_uart_configure(void); extern void avr_uart_send(const char); static void linkstation_restart(char *cmd) { local_irq_disable(); /* Reset system via AVR */ avr_uart_configure(); /* Send reboot command */ avr_uart_send('C'); for(;;) /* Spin until reset happens */ avr_uart_send('G'); /* "kick" */ } static void linkstation_power_off(void) { local_irq_disable(); /* Power down system via AVR */ avr_uart_configure(); /* send shutdown command */ avr_uart_send('E'); for(;;) /* Spin until power-off happens */ avr_uart_send('G'); /* "kick" */ /* NOTREACHED */ } static void linkstation_halt(void) { linkstation_power_off(); /* NOTREACHED */ } static void linkstation_show_cpuinfo(struct seq_file *m) { seq_printf(m, "vendor\t\t: Buffalo Technology\n"); seq_printf(m, "machine\t\t: Linkstation I/Kurobox(HG)\n"); } static int __init linkstation_probe(void) { unsigned long root; root = of_get_flat_dt_root(); if (!of_flat_dt_is_compatible(root, "linkstation")) return 0; return 1; } define_machine(linkstation){ .name = "Buffalo Linkstation", .probe = linkstation_probe, .setup_arch = linkstation_setup_arch, .init_IRQ = linkstation_init_IRQ, .show_cpuinfo = linkstation_show_cpuinfo, .get_irq = mpic_get_irq, .restart = linkstation_restart, .power_off = linkstation_power_off, .halt = linkstation_halt, .calibrate_decr = generic_calibrate_decr, };