release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/sni/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, 97, 98, 2000, 03, 04, 06 Ralf Baechle (ralf@linux-mips.org)
   9  * Copyright (C) 2006,2007 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
  10  */
  11 #include <linux/eisa.h>
  12 #include <linux/init.h>
  13 #include <linux/console.h>
  14 #include <linux/fb.h>
  15 #include <linux/screen_info.h>
  16
  17 #ifdef CONFIG_ARC
  18 #include <asm/fw/arc/types.h>
  19 #include <asm/sgialib.h>
  20 #endif
  21
  22 #ifdef CONFIG_SNIPROM
  23 #include <asm/mipsprom.h>
  24 #endif
  25
  26 #include <asm/bootinfo.h>
  27 #include <asm/io.h>
  28 #include <asm/reboot.h>
  29 #include <asm/sni.h>
  30
  31 unsigned int sni_brd_type;
  32 EXPORT_SYMBOL(sni_brd_type);
  33
  34 extern void sni_machine_restart(char *command);
  35 extern void sni_machine_power_off(void);
  36
  37 static void __init sni_display_setup(void)
  38 {
  39 #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_ARC)
  40         struct screen_info *si = &screen_info;
  41         DISPLAY_STATUS *di;
  42
  43         di = ArcGetDisplayStatus(1);
  44
  45         if (di) {
  46                 si->orig_x              = di->CursorXPosition;
  47                 si->orig_y              = di->CursorYPosition;
  48                 si->orig_video_cols     = di->CursorMaxXPosition;
  49                 si->orig_video_lines    = di->CursorMaxYPosition;
  50                 si->orig_video_isVGA    = VIDEO_TYPE_VGAC;
  51                 si->orig_video_points   = 16;
  52         }
  53 #endif
  54 }
  55
  56 static void __init sni_console_setup(void)
  57 {
  58 #ifndef CONFIG_ARC
  59         char *ctype;
  60         char *cdev;
  61         char *baud;
  62         int port;
  63         static char options[8] __initdata;
  64
  65         cdev = prom_getenv("console_dev");
  66         if (strncmp(cdev, "tty", 3) == 0) {
  67                 ctype = prom_getenv("console");
  68                 switch (*ctype) {
  69                 default:
  70                 case 'l':
  71                         port = 0;
  72                         baud = prom_getenv("lbaud");
  73                         break;
  74                 case 'r':
  75                         port = 1;
  76                         baud = prom_getenv("rbaud");
  77                         break;
  78                 }
  79                 if (baud)
  80                         strcpy(options, baud);
  81                 if (strncmp(cdev, "tty552", 6) == 0)
  82                         add_preferred_console("ttyS", port,
  83                                               baud ? options : NULL);
  84                 else
  85                         add_preferred_console("ttySC", port,
  86                                               baud ? options : NULL);
  87         }
  88 #endif
  89 }
  90
  91 #ifdef DEBUG
  92 static void __init sni_idprom_dump(void)
  93 {
  94         int     i;
  95
  96         pr_debug("SNI IDProm dump:\n");
  97         for (i = 0; i < 256; i++) {
  98                 if (i%16 == 0)
  99                         pr_debug("%04x ", i);
 100
 101                 printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i));
 102
 103                 if (i % 16 == 15)
 104                         printk("\n");
 105         }
 106 }
 107 #endif
 108
 109 void __init plat_mem_setup(void)
 110 {
 111         int cputype;
 112
 113         set_io_port_base(SNI_PORT_BASE);
 114 //      ioport_resource.end = sni_io_resource.end;
 115
 116         /*
 117          * Setup (E)ISA I/O memory access stuff
 118          */
 119 #ifdef CONFIG_EISA
 120         EISA_bus = 1;
 121 #endif
 122
 123         sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
 124         cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE;
 125         switch (sni_brd_type) {
 126         case SNI_BRD_TOWER_OASIC:
 127                 switch (cputype) {
 128                 case SNI_CPU_M8030:
 129                         system_type = "RM400-330";
 130                         break;
 131                 case SNI_CPU_M8031:
 132                         system_type = "RM400-430";
 133                         break;
 134                 case SNI_CPU_M8037:
 135                         system_type = "RM400-530";
 136                         break;
 137                 case SNI_CPU_M8034:
 138                         system_type = "RM400-730";
 139                         break;
 140                 default:
 141                         system_type = "RM400-xxx";
 142                         break;
 143                 }
 144                 break;
 145         case SNI_BRD_MINITOWER:
 146                 switch (cputype) {
 147                 case SNI_CPU_M8021:
 148                 case SNI_CPU_M8043:
 149                         system_type = "RM400-120";
 150                         break;
 151                 case SNI_CPU_M8040:
 152                         system_type = "RM400-220";
 153                         break;
 154                 case SNI_CPU_M8053:
 155                         system_type = "RM400-225";
 156                         break;
 157                 case SNI_CPU_M8050:
 158                         system_type = "RM400-420";
 159                         break;
 160                 default:
 161                         system_type = "RM400-xxx";
 162                         break;
 163                 }
 164                 break;
 165         case SNI_BRD_PCI_TOWER:
 166                 system_type = "RM400-Cxx";
 167                 break;
 168         case SNI_BRD_RM200:
 169                 system_type = "RM200-xxx";
 170                 break;
 171         case SNI_BRD_PCI_MTOWER:
 172                 system_type = "RM300-Cxx";
 173                 break;
 174         case SNI_BRD_PCI_DESKTOP:
 175                 switch (read_c0_prid() & 0xff00) {
 176                 case PRID_IMP_R4600:
 177                 case PRID_IMP_R4700:
 178                         system_type = "RM200-C20";
 179                         break;
 180                 case PRID_IMP_R5000:
 181                         system_type = "RM200-C40";
 182                         break;
 183                 default:
 184                         system_type = "RM200-Cxx";
 185                         break;
 186                 }
 187                 break;
 188         case SNI_BRD_PCI_TOWER_CPLUS:
 189                 system_type = "RM400-Exx";
 190                 break;
 191         case SNI_BRD_PCI_MTOWER_CPLUS:
 192                 system_type = "RM300-Exx";
 193                 break;
 194         }
 195         pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type, system_type);
 196
 197 #ifdef DEBUG
 198         sni_idprom_dump();
 199 #endif
 200
 201         switch (sni_brd_type) {
 202         case SNI_BRD_10:
 203         case SNI_BRD_10NEW:
 204         case SNI_BRD_TOWER_OASIC:
 205         case SNI_BRD_MINITOWER:
 206                 sni_a20r_init();
 207                 break;
 208
 209         case SNI_BRD_PCI_TOWER:
 210         case SNI_BRD_PCI_TOWER_CPLUS:
 211                 sni_pcit_init();
 212                 break;
 213
 214         case SNI_BRD_RM200:
 215                 sni_rm200_init();
 216                 break;
 217
 218         case SNI_BRD_PCI_MTOWER:
 219         case SNI_BRD_PCI_DESKTOP:
 220         case SNI_BRD_PCI_MTOWER_CPLUS:
 221                 sni_pcimt_init();
 222                 break;
 223         }
 224
 225         _machine_restart = sni_machine_restart;
 226         pm_power_off = sni_machine_power_off;
 227
 228         sni_display_setup();
 229         sni_console_setup();
 230 }
 231
 232 #ifdef CONFIG_PCI
 233
 234 #include <linux/pci.h>
 235 #include <video/vga.h>
 236 #include <video/cirrus.h>
 237
 238 static void __devinit quirk_cirrus_ram_size(struct pci_dev *dev)
 239 {
 240         u16 cmd;
 241
 242         /*
 243          * firmware doesn't set the ram size correct, so we
 244          * need to do it here, otherwise we get screen corruption
 245          * on older Cirrus chips
 246          */
 247         pci_read_config_word(dev, PCI_COMMAND, &cmd);
 248         if ((cmd & (PCI_COMMAND_IO|PCI_COMMAND_MEMORY))
 249                 == (PCI_COMMAND_IO|PCI_COMMAND_MEMORY)) {
 250                 vga_wseq(NULL, CL_SEQR6, 0x12); /* unlock all extension registers */
 251                 vga_wseq(NULL, CL_SEQRF, 0x18);
 252         }
 253 }
 254
 255 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5434_8,
 256                         quirk_cirrus_ram_size);
 257 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5436,
 258                         quirk_cirrus_ram_size);
 259 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446,
 260                         quirk_cirrus_ram_size);
 261 #endif