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166 lines
3.9 KiB
166 lines
3.9 KiB
/* |
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* Board setup routines for the Buffalo Linkstation / Kurobox Platform. |
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* |
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* Copyright (C) 2006 G. Liakhovetski ([email protected]) |
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* |
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* Based on sandpoint.c by Mark A. Greer |
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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/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 of_bus_ids[] __initconst = { |
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{ .type = "soc", }, |
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{ .compatible = "simple-bus", }, |
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{}, |
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}; |
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static int __init declare_of_platform_devices(void) |
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{ |
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of_platform_bus_probe(NULL, of_bus_ids, NULL); |
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return 0; |
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} |
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machine_device_initcall(linkstation, declare_of_platform_devices); |
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static int __init linkstation_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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bus_range = of_get_property(dev, "bus-range", &len); |
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if (bus_range == NULL || len < 2 * sizeof(int)) |
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printk(KERN_WARNING "Can't get bus-range for %pOF, assume" |
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" bus 0\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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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, 0xfec00000, 0xfee00000, 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 linkstation_setup_arch(void) |
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{ |
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printk(KERN_INFO "BUFFALO Network Attached Storage Series\n"); |
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printk(KERN_INFO "(C) 2002-2005 BUFFALO INC.\n"); |
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} |
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static void __init linkstation_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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linkstation_add_bridge(np); |
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} |
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/* |
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* Interrupt setup and service. Interrupts on the linkstation 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 linkstation_init_IRQ(void) |
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{ |
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struct mpic *mpic; |
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mpic = mpic_alloc(NULL, 0, 0, 4, 0, " EPIC "); |
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BUG_ON(mpic == NULL); |
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/* PCI IRQs */ |
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mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200); |
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/* I2C */ |
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mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000); |
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/* ttyS0, ttyS1 */ |
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mpic_assign_isu(mpic, 2, mpic->paddr + 0x11100); |
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mpic_init(mpic); |
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} |
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extern void avr_uart_configure(void); |
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extern void avr_uart_send(const char); |
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static void __noreturn linkstation_restart(char *cmd) |
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{ |
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local_irq_disable(); |
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/* Reset system via AVR */ |
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avr_uart_configure(); |
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/* Send reboot command */ |
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avr_uart_send('C'); |
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for(;;) /* Spin until reset happens */ |
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avr_uart_send('G'); /* "kick" */ |
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} |
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static void __noreturn linkstation_power_off(void) |
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{ |
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local_irq_disable(); |
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/* Power down system via AVR */ |
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avr_uart_configure(); |
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/* send shutdown command */ |
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avr_uart_send('E'); |
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for(;;) /* Spin until power-off happens */ |
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avr_uart_send('G'); /* "kick" */ |
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/* NOTREACHED */ |
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} |
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static void __noreturn linkstation_halt(void) |
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{ |
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linkstation_power_off(); |
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/* NOTREACHED */ |
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} |
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static void linkstation_show_cpuinfo(struct seq_file *m) |
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{ |
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seq_printf(m, "vendor\t\t: Buffalo Technology\n"); |
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seq_printf(m, "machine\t\t: Linkstation I/Kurobox(HG)\n"); |
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} |
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static int __init linkstation_probe(void) |
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{ |
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if (!of_machine_is_compatible("linkstation")) |
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return 0; |
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pm_power_off = linkstation_power_off; |
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return 1; |
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} |
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define_machine(linkstation){ |
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.name = "Buffalo Linkstation", |
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.probe = linkstation_probe, |
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.setup_arch = linkstation_setup_arch, |
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.discover_phbs = linkstation_setup_pci, |
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.init_IRQ = linkstation_init_IRQ, |
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.show_cpuinfo = linkstation_show_cpuinfo, |
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.get_irq = mpic_get_irq, |
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.restart = linkstation_restart, |
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.halt = linkstation_halt, |
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.calibrate_decr = generic_calibrate_decr, |
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};
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