LXR linux/arch/mips/cobalt/setup.c

   1/*
   2 * Setup pointers to hardware dependent routines.
   3 *
   4 * This file is subject to the terms and conditions of the GNU General Public
   5 * License.  See the file "COPYING" in the main directory of this archive
   6 * for more details.
   7 *
   8 * Copyright (C) 1996, 1997, 2004, 05 by Ralf Baechle (ralf@linux-mips.org)
   9 * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
  10 *
  11 */
  12#include <linux/init.h>
  13#include <linux/interrupt.h>
  14#include <linux/io.h>
  15#include <linux/ioport.h>
  16#include <linux/pm.h>
  17
  18#include <asm/bootinfo.h>
  19#include <asm/reboot.h>
  20#include <asm/gt64120.h>
  21
  22#include <cobalt.h>
  23
  24extern void cobalt_machine_restart(char *command);
  25extern void cobalt_machine_halt(void);
  26
  27const char *get_system_type(void)
  28{
  29        switch (cobalt_board_id) {
  30                case COBALT_BRD_ID_QUBE1:
  31                        return "Cobalt Qube";
  32                case COBALT_BRD_ID_RAQ1:
  33                        return "Cobalt RaQ";
  34                case COBALT_BRD_ID_QUBE2:
  35                        return "Cobalt Qube2";
  36                case COBALT_BRD_ID_RAQ2:
  37                        return "Cobalt RaQ2";
  38        }
  39        return "MIPS Cobalt";
  40}
  41
  42/*
  43 * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
  44 * keyboard conntroller is never used.
  45 * Also PCI-ISA bridge DMA contoroller is never used.
  46 */
  47static struct resource cobalt_reserved_resources[] = {
  48        {       /* dma1 */
  49                .start  = 0x00,
  50                .end    = 0x1f,
  51                .name   = "reserved",
  52                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  53        },
  54        {       /* keyboard */
  55                .start  = 0x60,
  56                .end    = 0x6f,
  57                .name   = "reserved",
  58                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  59        },
  60        {       /* dma page reg */
  61                .start  = 0x80,
  62                .end    = 0x8f,
  63                .name   = "reserved",
  64                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  65        },
  66        {       /* dma2 */
  67                .start  = 0xc0,
  68                .end    = 0xdf,
  69                .name   = "reserved",
  70                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  71        },
  72};
  73
  74void __init plat_mem_setup(void)
  75{
  76        int i;
  77
  78        _machine_restart = cobalt_machine_restart;
  79        _machine_halt = cobalt_machine_halt;
  80        pm_power_off = cobalt_machine_halt;
  81
  82        set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
  83
  84        /* I/O port resource */
  85        ioport_resource.end = 0x01ffffff;
  86
  87        /* These resources have been reserved by VIA SuperI/O chip. */
  88        for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
  89                request_resource(&ioport_resource, cobalt_reserved_resources + i);
  90}
  91
  92/*
  93 * Prom init. We read our one and only communication with the firmware.
  94 * Grab the amount of installed memory.
  95 * Better boot loaders (CoLo) pass a command line too :-)
  96 */
  97
  98void __init prom_init(void)
  99{
 100        int narg, indx, posn, nchr;
 101        unsigned long memsz;
 102        char **argv;
 103
 104        memsz = fw_arg0 & 0x7fff0000;
 105        narg = fw_arg0 & 0x0000ffff;
 106
 107        if (narg) {
 108                arcs_cmdline[0] = '\0';
 109                argv = (char **) fw_arg1;
 110                posn = 0;
 111                for (indx = 1; indx < narg; ++indx) {
 112                        nchr = strlen(argv[indx]);
 113                        if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
 114                                break;
 115                        if (posn)
 116                                arcs_cmdline[posn++] = ' ';
 117                        strcpy(arcs_cmdline + posn, argv[indx]);
 118                        posn += nchr;
 119                }
 120        }
 121
 122        add_memory_region(0x0, memsz, BOOT_MEM_RAM);
 123}
 124
 125void __init prom_free_prom_memory(void)
 126{
 127        /* Nothing to do! */
 128}
 129