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setup.c

/*
 * Setup pointers to hardware-dependent routines.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1996, 97, 98, 2000, 03, 04, 06 Ralf Baechle (ralf@linux-mips.org)
 * Copyright (C) 2006,2007 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
 */
#include <linux/eisa.h>
#include <linux/init.h>
#include <linux/console.h>
#include <linux/fb.h>
#include <linux/screen_info.h>

#ifdef CONFIG_ARC
#include <asm/fw/arc/types.h>
#include <asm/sgialib.h>
#endif

#ifdef CONFIG_SNIPROM
#include <asm/mipsprom.h>
#endif

#include <asm/bootinfo.h>
#include <asm/io.h>
#include <asm/reboot.h>
#include <asm/sni.h>

unsigned int sni_brd_type;
EXPORT_SYMBOL(sni_brd_type);

extern void sni_machine_restart(char *command);
extern void sni_machine_power_off(void);

static void __init sni_display_setup(void)
{
#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_ARC)
      struct screen_info *si = &screen_info;
      DISPLAY_STATUS *di;

      di = ArcGetDisplayStatus(1);

      if (di) {
            si->orig_x        = di->CursorXPosition;
            si->orig_y        = di->CursorYPosition;
            si->orig_video_cols     = di->CursorMaxXPosition;
            si->orig_video_lines    = di->CursorMaxYPosition;
            si->orig_video_isVGA    = VIDEO_TYPE_VGAC;
            si->orig_video_points   = 16;
      }
#endif
}

static void __init sni_console_setup(void)
{
#ifndef CONFIG_ARC
      char *ctype;
      char *cdev;
      char *baud;
      int port;
      static char options[8];

      cdev = prom_getenv("console_dev");
      if (strncmp(cdev, "tty", 3) == 0) {
            ctype = prom_getenv("console");
            switch (*ctype) {
            default:
            case 'l':
                  port = 0;
                  baud = prom_getenv("lbaud");
                  break;
            case 'r':
                  port = 1;
                  baud = prom_getenv("rbaud");
                  break;
            }
            if (baud)
                  strcpy(options, baud);
            if (strncmp(cdev, "tty552", 6) == 0)
                  add_preferred_console("ttyS", port,
                                    baud ? options : NULL);
            else
                  add_preferred_console("ttySC", port,
                                    baud ? options : NULL);
      }
#endif
}

#ifdef DEBUG
static void __init sni_idprom_dump(void)
{
      int   i;

      pr_debug("SNI IDProm dump:\n");
      for (i = 0; i < 256; i++) {
            if (i%16 == 0)
                  pr_debug("%04x ", i);

            printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i));

            if (i % 16 == 15)
                  printk("\n");
      }
}
#endif

void __init plat_mem_setup(void)
{
      int cputype;

      set_io_port_base(SNI_PORT_BASE);
//    ioport_resource.end = sni_io_resource.end;

      /*
       * Setup (E)ISA I/O memory access stuff
       */
#ifdef CONFIG_EISA
      EISA_bus = 1;
#endif

      sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
      cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE;
      switch (sni_brd_type) {
      case SNI_BRD_TOWER_OASIC:
            switch (cputype) {
            case SNI_CPU_M8030:
                  system_type = "RM400-330";
                  break;
            case SNI_CPU_M8031:
                  system_type = "RM400-430";
                  break;
            case SNI_CPU_M8037:
                  system_type = "RM400-530";
                  break;
            case SNI_CPU_M8034:
                  system_type = "RM400-730";
                  break;
            default:
                  system_type = "RM400-xxx";
                  break;
            }
            break;
      case SNI_BRD_MINITOWER:
            switch (cputype) {
            case SNI_CPU_M8021:
            case SNI_CPU_M8043:
                  system_type = "RM400-120";
                  break;
            case SNI_CPU_M8040:
                  system_type = "RM400-220";
                  break;
            case SNI_CPU_M8053:
                  system_type = "RM400-225";
                  break;
            case SNI_CPU_M8050:
                  system_type = "RM400-420";
                  break;
            default:
                  system_type = "RM400-xxx";
                  break;
            }
            break;
      case SNI_BRD_PCI_TOWER:
            system_type = "RM400-Cxx";
            break;
      case SNI_BRD_RM200:
            system_type = "RM200-xxx";
            break;
      case SNI_BRD_PCI_MTOWER:
            system_type = "RM300-Cxx";
            break;
      case SNI_BRD_PCI_DESKTOP:
            switch (read_c0_prid() & 0xff00) {
            case PRID_IMP_R4600:
            case PRID_IMP_R4700:
                  system_type = "RM200-C20";
                  break;
            case PRID_IMP_R5000:
                  system_type = "RM200-C40";
                  break;
            default:
                  system_type = "RM200-Cxx";
                  break;
            }
            break;
      case SNI_BRD_PCI_TOWER_CPLUS:
            system_type = "RM400-Exx";
            break;
      case SNI_BRD_PCI_MTOWER_CPLUS:
            system_type = "RM300-Exx";
            break;
      }
      pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type, system_type);

#ifdef DEBUG
      sni_idprom_dump();
#endif

      switch (sni_brd_type) {
      case SNI_BRD_10:
      case SNI_BRD_10NEW:
      case SNI_BRD_TOWER_OASIC:
      case SNI_BRD_MINITOWER:
              sni_a20r_init();
              break;

      case SNI_BRD_PCI_TOWER:
      case SNI_BRD_PCI_TOWER_CPLUS:
              sni_pcit_init();
            break;

      case SNI_BRD_RM200:
              sni_rm200_init();
              break;

      case SNI_BRD_PCI_MTOWER:
      case SNI_BRD_PCI_DESKTOP:
      case SNI_BRD_PCI_MTOWER_CPLUS:
              sni_pcimt_init();
              break;
      }

      _machine_restart = sni_machine_restart;
      pm_power_off = sni_machine_power_off;

      sni_display_setup();
      sni_console_setup();
}

#ifdef CONFIG_PCI

#include <linux/pci.h>
#include <video/vga.h>
#include <video/cirrus.h>

static void __devinit quirk_cirrus_ram_size(struct pci_dev *dev)
{
      u16 cmd;

      /*
       * firmware doesn't set the ram size correct, so we
       * need to do it here, otherwise we get screen corruption
       * on older Cirrus chips
       */
      pci_read_config_word(dev, PCI_COMMAND, &cmd);
      if ((cmd & (PCI_COMMAND_IO|PCI_COMMAND_MEMORY))
              == (PCI_COMMAND_IO|PCI_COMMAND_MEMORY)) {
            vga_wseq(NULL, CL_SEQR6, 0x12);     /* unlock all extension registers */
            vga_wseq(NULL, CL_SEQRF, 0x18);
      }
}

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5434_8,
                        quirk_cirrus_ram_size);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5436,
                        quirk_cirrus_ram_size);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446,
                        quirk_cirrus_ram_size);
#endif

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