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/*
* 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/pci.h>
#include <linux/initrd.h>
#include <linux/mtd/physmap.h>
#include <asm/time.h>
#include <asm/prom.h>
#include <asm/mpic.h>
#include <asm/mpc10x.h>
#include <asm/pci-bridge.h>
static struct mtd_partition linkstation_physmap_partitions[] = {
{
.name = "mtd_firmimg",
.offset = 0x000000,
.size = 0x300000,
},
{
.name = "mtd_bootcode",
.offset = 0x300000,
.size = 0x070000,
},
{
.name = "mtd_status",
.offset = 0x370000,
.size = 0x010000,
},
{
.name = "mtd_conf",
.offset = 0x380000,
.size = 0x080000,
},
{
.name = "mtd_allflash",
.offset = 0x000000,
.size = 0x400000,
},
{
.name = "mtd_data",
.offset = 0x310000,
.size = 0x0f0000,
},
};
static int __init linkstation_add_bridge(struct device_node *dev)
{
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();
if (hose == NULL)
return -ENOMEM;
hose->first_busno = bus_range ? bus_range[0] : 0;
hose->last_busno = bus_range ? bus_range[1] : 0xff;
hose->arch_data = dev;
setup_indirect_pci(hose, 0xfec00000, 0xfee00000);
/* 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);
return 0;
}
static void __init linkstation_setup_arch(void)
{
struct device_node *np;
#ifdef CONFIG_MTD_PHYSMAP
physmap_set_partitions(linkstation_physmap_partitions,
ARRAY_SIZE(linkstation_physmap_partitions));
#endif
/* Lookup PCI host bridges */
for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
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. Interrrupts 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;
struct device_node *dnp;
const u32 *prop;
int size;
phys_addr_t paddr;
dnp = of_find_node_by_type(NULL, "open-pic");
if (dnp == NULL)
return;
prop = of_get_property(dnp, "reg", &size);
paddr = (phys_addr_t)of_translate_address(dnp, prop);
mpic = mpic_alloc(dnp, paddr, MPIC_PRIMARY | MPIC_WANTS_RESET, 4, 32, " EPIC ");
BUG_ON(mpic == NULL);
/* PCI IRQs */
mpic_assign_isu(mpic, 0, paddr + 0x10200);
/* I2C */
mpic_assign_isu(mpic, 1, paddr + 0x11000);
/* ttyS0, ttyS1 */
mpic_assign_isu(mpic, 2, 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,
};
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