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 extern void cobalt_machine_restart(char *command);
  27 extern void cobalt_machine_halt(void);
  28
  29 const 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  */
  49 static 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
  76 void __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
 100 void __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
 121 void __init prom_free_prom_memory(void)
 122 {
 123         /* Nothing to do! */
 124 }