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/setup.h>
  21 #include <asm/gt64120.h>
  22
  23 #include <cobalt.h>
  24
  25 extern void cobalt_machine_restart(char *command);
  26 extern void cobalt_machine_halt(void);
  27
  28 const char *get_system_type(void)
  29 {
  30         switch (cobalt_board_id) {
  31                 case COBALT_BRD_ID_QUBE1:
  32                         return "Cobalt Qube";
  33                 case COBALT_BRD_ID_RAQ1:
  34                         return "Cobalt RaQ";
  35                 case COBALT_BRD_ID_QUBE2:
  36                         return "Cobalt Qube2";
  37                 case COBALT_BRD_ID_RAQ2:
  38                         return "Cobalt RaQ2";
  39         }
  40         return "MIPS Cobalt";
  41 }
  42
  43 /*
  44  * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
  45  * keyboard controller is never used.
  46  * Also PCI-ISA bridge DMA controller is never used.
  47  */
  48 static struct resource cobalt_reserved_resources[] = {
  49         {       /* dma1 */
  50                 .start  = 0x00,
  51                 .end    = 0x1f,
  52                 .name   = "reserved",
  53                 .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  54         },
  55         {       /* keyboard */
  56                 .start  = 0x60,
  57                 .end    = 0x6f,
  58                 .name   = "reserved",
  59                 .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  60         },
  61         {       /* dma page reg */
  62                 .start  = 0x80,
  63                 .end    = 0x8f,
  64                 .name   = "reserved",
  65                 .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  66         },
  67         {       /* dma2 */
  68                 .start  = 0xc0,
  69                 .end    = 0xdf,
  70                 .name   = "reserved",
  71                 .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  72         },
  73 };
  74
  75 void __init plat_mem_setup(void)
  76 {
  77         int i;
  78
  79         _machine_restart = cobalt_machine_restart;
  80         _machine_halt = cobalt_machine_halt;
  81         pm_power_off = cobalt_machine_halt;
  82
  83         set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
  84
  85         /* I/O port resource */
  86         ioport_resource.end = 0x01ffffff;
  87
  88         /* These resources have been reserved by VIA SuperI/O chip. */
  89         for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
  90                 request_resource(&ioport_resource, cobalt_reserved_resources + i);
  91 }
  92
  93 /*
  94  * Prom init. We read our one and only communication with the firmware.
  95  * Grab the amount of installed memory.
  96  * Better boot loaders (CoLo) pass a command line too :-)
  97  */
  98
  99 void __init prom_init(void)
 100 {
 101         unsigned long memsz;
 102         int argc, i;
 103         char **argv;
 104
 105         memsz = fw_arg0 & 0x7fff0000;
 106         argc = fw_arg0 & 0x0000ffff;
 107         argv = (char **)fw_arg1;
 108
 109         for (i = 1; i < argc; i++) {
 110                 strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
 111                 if (i < (argc - 1))
 112                         strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
 113         }
 114
 115         add_memory_region(0x0, memsz, BOOT_MEM_RAM);
 116
 117         setup_8250_early_printk_port(CKSEG1ADDR(0x1c800000), 0, 0);
 118 }
 119
 120 void __init prom_free_prom_memory(void)
 121 {
 122         /* Nothing to do! */
 123 }