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setup.c

/*
 * 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 (ralf@linux-mips.org)
 * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
 *
 */
#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)
{
      int narg, indx, posn, nchr;
      unsigned long memsz;
      char **argv;

      memsz = fw_arg0 & 0x7fff0000;
      narg = fw_arg0 & 0x0000ffff;

      if (narg) {
            arcs_cmdline[0] = '\0';
            argv = (char **) fw_arg1;
            posn = 0;
            for (indx = 1; indx < narg; ++indx) {
                  nchr = strlen(argv[indx]);
                  if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
                        break;
                  if (posn)
                        arcs_cmdline[posn++] = ' ';
                  strcpy(arcs_cmdline + posn, argv[indx]);
                  posn += nchr;
            }
      }

      add_memory_region(0x0, memsz, BOOT_MEM_RAM);
}

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

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