setup.c

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/*
 * Setup pointers to hardware dependent routines.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1996, 1997, 2004, 05 by Ralf Baechle ([email protected])
 * Copyright (C) 2001, 2002, 2003 by Liam Davies ([email protected])
 *
 */
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/pm.h>

#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/gt64120.h>

#include <cobalt.h>

extern void cobalt_machine_restart(char *command);
extern void cobalt_machine_halt(void);

const char *get_system_type(void)
{
    switch (cobalt_board_id) {
        case COBALT_BRD_ID_QUBE1:
            return "Cobalt Qube";
        case COBALT_BRD_ID_RAQ1:
            return "Cobalt RaQ";
        case COBALT_BRD_ID_QUBE2:
            return "Cobalt Qube2";
        case COBALT_BRD_ID_RAQ2:
            return "Cobalt RaQ2";
    }
    return "MIPS Cobalt";
}

/*
 * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
 * keyboard conntroller is never used.
 * Also PCI-ISA bridge DMA contoroller is never used.
 */
static struct resource cobalt_reserved_resources[] = {
    {   /* dma1 */
        .start  = 0x00,
        .end    = 0x1f,
        .name   = "reserved",
        .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
    },
    {   /* keyboard */
        .start  = 0x60,
        .end    = 0x6f,
        .name   = "reserved",
        .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
    },
    {   /* dma page reg */
        .start  = 0x80,
        .end    = 0x8f,
        .name   = "reserved",
        .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
    },
    {   /* dma2 */
        .start  = 0xc0,
        .end    = 0xdf,
        .name   = "reserved",
        .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
    },
};

void __init plat_mem_setup(void)
{
    int i;

    _machine_restart = cobalt_machine_restart;
    _machine_halt = cobalt_machine_halt;
    pm_power_off = cobalt_machine_halt;

    set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));

    /* I/O port resource */
    ioport_resource.end = 0x01ffffff;

    /* These resources have been reserved by VIA SuperI/O chip. */
    for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
        request_resource(&ioport_resource, cobalt_reserved_resources + i);
}

/*
 * Prom init. We read our one and only communication with the firmware.
 * Grab the amount of installed memory.
 * Better boot loaders (CoLo) pass a command line too :-)
 */

void __init prom_init(void)
{
    unsigned long memsz;
    int argc, i;
    char **argv;

    memsz = fw_arg0 & 0x7fff0000;
    argc = fw_arg0 & 0x0000ffff;
    argv = (char **)fw_arg1;

    for (i = 1; i < argc; i++) {
        strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
        if (i < (argc - 1))
            strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
    }

    add_memory_region(0x0, memsz, BOOT_MEM_RAM);
}

void __init prom_free_prom_memory(void)
{
    /* Nothing to do! */
}