setup.c

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/*
 * 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 ([email protected])
 * Copyright (C) 2006,2007 Thomas Bogendoerfer ([email protected])
 */
#include <linux/eisa.h>
#include <linux/init.h>
#include <linux/export.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] __initdata;

    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