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