[POWERPC] Linkstation / kurobox support
Support for the Kurobox(HG)/LinkStation-I NAS systems by Buffalo Technology, should be also applicable to the PPC TeraStation family. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Guennadi Liakhovetski
committed by
Paul Mackerras
Paul Mackerras
parent
57933f8fbe
commit
04d76b937b
211
arch/powerpc/platforms/embedded6xx/linkstation.c
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211
arch/powerpc/platforms/embedded6xx/linkstation.c
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/*
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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 (g.liakhovetski@gmx.de)
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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/pci.h>
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#include <linux/initrd.h>
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#include <linux/root_dev.h>
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#include <linux/mtd/physmap.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/mpc10x.h>
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#include <asm/pci-bridge.h>
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static struct mtd_partition linkstation_physmap_partitions[] = {
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{
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.name = "mtd_firmimg",
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.offset = 0x000000,
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.size = 0x300000,
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},
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{
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.name = "mtd_bootcode",
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.offset = 0x300000,
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.size = 0x070000,
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},
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{
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.name = "mtd_status",
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.offset = 0x370000,
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.size = 0x010000,
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},
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{
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.name = "mtd_conf",
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.offset = 0x380000,
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.size = 0x080000,
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},
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{
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.name = "mtd_allflash",
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.offset = 0x000000,
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.size = 0x400000,
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},
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{
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.name = "mtd_data",
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.offset = 0x310000,
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.size = 0x0f0000,
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},
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};
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static int __init add_bridge(struct device_node *dev)
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{
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int len;
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struct pci_controller *hose;
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int *bus_range;
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printk("Adding PCI host bridge %s\n", dev->full_name);
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bus_range = (int *) 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 %s, assume"
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" bus 0\n", dev->full_name);
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hose = pcibios_alloc_controller();
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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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hose->arch_data = dev;
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setup_indirect_pci(hose, 0xfec00000, 0xfee00000);
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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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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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struct device_node *np;
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#ifdef CONFIG_MTD_PHYSMAP
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physmap_set_partitions(linkstation_physmap_partitions,
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ARRAY_SIZE(linkstation_physmap_partitions));
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#endif
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#ifdef CONFIG_BLK_DEV_INITRD
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if (initrd_start)
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ROOT_DEV = Root_RAM0;
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else
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#endif
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#ifdef CONFIG_ROOT_NFS
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ROOT_DEV = Root_NFS;
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#else
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ROOT_DEV = Root_HDA1;
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#endif
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/* Lookup PCI host bridges */
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for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
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add_bridge(np);
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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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/*
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* Interrupt setup and service. Interrrupts 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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struct device_node *dnp;
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void *prop;
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int size;
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phys_addr_t paddr;
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dnp = of_find_node_by_type(NULL, "open-pic");
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if (dnp == NULL)
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return;
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prop = (struct device_node *)get_property(dnp, "reg", &size);
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paddr = (phys_addr_t)of_translate_address(dnp, prop);
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mpic = mpic_alloc(dnp, paddr, MPIC_PRIMARY | MPIC_WANTS_RESET, 4, 32, " EPIC ");
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BUG_ON(mpic == NULL);
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/* PCI IRQs */
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mpic_assign_isu(mpic, 0, paddr + 0x10200);
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/* I2C */
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mpic_assign_isu(mpic, 1, paddr + 0x11000);
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/* ttyS0, ttyS1 */
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mpic_assign_isu(mpic, 2, 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 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 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 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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unsigned long root;
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root = of_get_flat_dt_root();
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if (!of_flat_dt_is_compatible(root, "linkstation"))
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return 0;
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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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.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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.power_off = linkstation_power_off,
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.halt = linkstation_halt,
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.calibrate_decr = generic_calibrate_decr,
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};
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