/*
* 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 <linux/seq_file.h>
#include <asm /time.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 %pOF\n" , dev);
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 %pOF, assume"
" bus 0\n" , dev);
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 ] : 0 xff;
setup_indirect_pci(hose, 0 xfec00000, 0 xfee00000, 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 )
{
printk(KERN_INFO "BUFFALO Network Attached Storage Series\n" );
printk(KERN_INFO "(C) 2002-2005 BUFFALO INC.\n" );
}
static void __init linkstation_setup_pci(void )
{
struct device_node *np;
/* Lookup PCI host bridges */
for_each_compatible_node(np, "pci" , "mpc10x-pci" )
linkstation_add_bridge(np);
}
/*
* 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 + 0 x10200);
/* I2C */
mpic_assign_isu(mpic, 1 , mpic->paddr + 0 x11000);
/* ttyS0, ttyS1 */
mpic_assign_isu(mpic, 2 , mpic->paddr + 0 x11100);
mpic_init(mpic);
}
static void __noreturn 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 __noreturn 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 __noreturn 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 )
{
pm_power_off = linkstation_power_off;
return 1 ;
}
define_machine(linkstation){
.name = "Buffalo Linkstation" ,
.compatible = "linkstation" ,
.probe = linkstation_probe,
.setup_arch = linkstation_setup_arch,
.discover_phbs = linkstation_setup_pci,
.init_IRQ = linkstation_init_IRQ,
.show_cpuinfo = linkstation_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = linkstation_restart,
.halt = linkstation_halt,
};
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