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
  24 extern void cobalt_machine_restart(char *command);
  25 extern void cobalt_machine_halt(void);
  26
  27 const 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  */
  47 static 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
  74 void __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 must include LCD/buttons */
  85         ioport_resource.end = 0x0fffffff;
  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
  98 void __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
 125 void __init prom_free_prom_memory(void)
 126 {
 127         /* Nothing to do! */
 128 }