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];
  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         isa_slot_offset = CKSEG1ADDR(0xb0000000);
 120 #ifdef CONFIG_EISA
 121         EISA_bus = 1;
 122 #endif
 123
 124         sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
 125         cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE;
 126         switch (sni_brd_type) {
 127         case SNI_BRD_TOWER_OASIC:
 128                 switch (cputype) {
 129                 case SNI_CPU_M8030:
 130                         system_type = "RM400-330";
 131                         break;
 132                 case SNI_CPU_M8031:
 133                         system_type = "RM400-430";
 134                         break;
 135                 case SNI_CPU_M8037:
 136                         system_type = "RM400-530";
 137                         break;
 138                 case SNI_CPU_M8034:
 139                         system_type = "RM400-730";
 140                         break;
 141                 default:
 142                         system_type = "RM400-xxx";
 143                         break;
 144                 }
 145                 break;
 146         case SNI_BRD_MINITOWER:
 147                 switch (cputype) {
 148                 case SNI_CPU_M8021:
 149                 case SNI_CPU_M8043:
 150                         system_type = "RM400-120";
 151                         break;
 152                 case SNI_CPU_M8040:
 153                         system_type = "RM400-220";
 154                         break;
 155                 case SNI_CPU_M8053:
 156                         system_type = "RM400-225";
 157                         break;
 158                 case SNI_CPU_M8050:
 159                         system_type = "RM400-420";
 160                         break;
 161                 default:
 162                         system_type = "RM400-xxx";
 163                         break;
 164                 }
 165                 break;
 166         case SNI_BRD_PCI_TOWER:
 167                 system_type = "RM400-Cxx";
 168                 break;
 169         case SNI_BRD_RM200:
 170                 system_type = "RM200-xxx";
 171                 break;
 172         case SNI_BRD_PCI_MTOWER:
 173                 system_type = "RM300-Cxx";
 174                 break;
 175         case SNI_BRD_PCI_DESKTOP:
 176                 switch (read_c0_prid() & 0xff00) {
 177                 case PRID_IMP_R4600:
 178                 case PRID_IMP_R4700:
 179                         system_type = "RM200-C20";
 180                         break;
 181                 case PRID_IMP_R5000:
 182                         system_type = "RM200-C40";
 183                         break;
 184                 default:
 185                         system_type = "RM200-Cxx";
 186                         break;
 187                 }
 188                 break;
 189         case SNI_BRD_PCI_TOWER_CPLUS:
 190                 system_type = "RM400-Exx";
 191                 break;
 192         case SNI_BRD_PCI_MTOWER_CPLUS:
 193                 system_type = "RM300-Exx";
 194                 break;
 195         }
 196         pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type, system_type);
 197
 198 #ifdef DEBUG
 199         sni_idprom_dump();
 200 #endif
 201
 202         switch (sni_brd_type) {
 203         case SNI_BRD_10:
 204         case SNI_BRD_10NEW:
 205         case SNI_BRD_TOWER_OASIC:
 206         case SNI_BRD_MINITOWER:
 207                 sni_a20r_init();
 208                 break;
 209
 210         case SNI_BRD_PCI_TOWER:
 211         case SNI_BRD_PCI_TOWER_CPLUS:
 212                 sni_pcit_init();
 213                 break;
 214
 215         case SNI_BRD_RM200:
 216                 sni_rm200_init();
 217                 break;
 218
 219         case SNI_BRD_PCI_MTOWER:
 220         case SNI_BRD_PCI_DESKTOP:
 221         case SNI_BRD_PCI_MTOWER_CPLUS:
 222                 sni_pcimt_init();
 223                 break;
 224         }
 225
 226         _machine_restart = sni_machine_restart;
 227         pm_power_off = sni_machine_power_off;
 228
 229         sni_display_setup();
 230         sni_console_setup();
 231 }
 232
 233 #ifdef CONFIG_PCI
 234
 235 #include <linux/pci.h>
 236 #include <video/vga.h>
 237 #include <video/cirrus.h>
 238
 239 static void __devinit quirk_cirrus_ram_size(struct pci_dev *dev)
 240 {
 241         u16 cmd;
 242
 243         /*
 244          * firmware doesn't set the ram size correct, so we
 245          * need to do it here, otherwise we get screen corruption
 246          * on older Cirrus chips
 247          */
 248         pci_read_config_word(dev, PCI_COMMAND, &cmd);
 249         if ((cmd & (PCI_COMMAND_IO|PCI_COMMAND_MEMORY))
 250                 == (PCI_COMMAND_IO|PCI_COMMAND_MEMORY)) {
 251                 vga_wseq(NULL, CL_SEQR6, 0x12); /* unlock all extension registers */
 252                 vga_wseq(NULL, CL_SEQRF, 0x18);
 253         }
 254 }
 255
 256 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5434_8,
 257                         quirk_cirrus_ram_size);
 258 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5436,
 259                         quirk_cirrus_ram_size);
 260 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446,
 261                         quirk_cirrus_ram_size);
 262 #endif