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/memblock.h>
  17#include <linux/pm.h>
  18
  19#include <asm/bootinfo.h>
  20#include <asm/reboot.h>
  21#include <asm/setup.h>
  22#include <asm/gt64120.h>
  23
  24#include <cobalt.h>
  25
  26extern void cobalt_machine_restart(char *command);
  27extern void cobalt_machine_halt(void);
  28
  29const char *get_system_type(void)
  30{
  31        switch (cobalt_board_id) {
  32                case COBALT_BRD_ID_QUBE1:
  33                        return "Cobalt Qube";
  34                case COBALT_BRD_ID_RAQ1:
  35                        return "Cobalt RaQ";
  36                case COBALT_BRD_ID_QUBE2:
  37                        return "Cobalt Qube2";
  38                case COBALT_BRD_ID_RAQ2:
  39                        return "Cobalt RaQ2";
  40        }
  41        return "MIPS Cobalt";
  42}
  43
  44/*
  45 * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
  46 * keyboard controller is never used.
  47 * Also PCI-ISA bridge DMA controller is never used.
  48 */
  49static struct resource cobalt_reserved_resources[] = {
  50        {       /* dma1 */
  51                .start  = 0x00,
  52                .end    = 0x1f,
  53                .name   = "reserved",
  54                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  55        },
  56        {       /* keyboard */
  57                .start  = 0x60,
  58                .end    = 0x6f,
  59                .name   = "reserved",
  60                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  61        },
  62        {       /* dma page reg */
  63                .start  = 0x80,
  64                .end    = 0x8f,
  65                .name   = "reserved",
  66                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  67        },
  68        {       /* dma2 */
  69                .start  = 0xc0,
  70                .end    = 0xdf,
  71                .name   = "reserved",
  72                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  73        },
  74};
  75
  76void __init plat_mem_setup(void)
  77{
  78        int i;
  79
  80        _machine_restart = cobalt_machine_restart;
  81        _machine_halt = cobalt_machine_halt;
  82        pm_power_off = cobalt_machine_halt;
  83
  84        set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
  85
  86        /* I/O port resource */
  87        ioport_resource.end = 0x01ffffff;
  88
  89        /* These resources have been reserved by VIA SuperI/O chip. */
  90        for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
  91                request_resource(&ioport_resource, cobalt_reserved_resources + i);
  92}
  93
  94/*
  95 * Prom init. We read our one and only communication with the firmware.
  96 * Grab the amount of installed memory.
  97 * Better boot loaders (CoLo) pass a command line too :-)
  98 */
  99
 100void __init prom_init(void)
 101{
 102        unsigned long memsz;
 103        int argc, i;
 104        char **argv;
 105
 106        memsz = fw_arg0 & 0x7fff0000;
 107        argc = fw_arg0 & 0x0000ffff;
 108        argv = (char **)fw_arg1;
 109
 110        for (i = 1; i < argc; i++) {
 111                strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
 112                if (i < (argc - 1))
 113                        strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
 114        }
 115
 116        memblock_add(0, memsz);
 117
 118        setup_8250_early_printk_port(CKSEG1ADDR(0x1c800000), 0, 0);
 119}
 120