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