git.oblomov.eu Git - linux-2.6/blob - arch/mips/mips-boards/malta/malta_setup.c

   1 /*
   2  * Carsten Langgaard, carstenl@mips.com
   3  * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
   4  *
   5  *  This program is free software; you can distribute it and/or modify it
   6  *  under the terms of the GNU General Public License (Version 2) as
   7  *  published by the Free Software Foundation.
   8  *
   9  *  This program is distributed in the hope it will be useful, but WITHOUT
  10  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  *  for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License along
  15  *  with this program; if not, write to the Free Software Foundation, Inc.,
  16  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  17  */
  18 #include <linux/config.h>
  19 #include <linux/init.h>
  20 #include <linux/sched.h>
  21 #include <linux/ioport.h>
  22 #include <linux/pci.h>
  23 #include <linux/tty.h>
  24
  25 #ifdef CONFIG_MTD
  26 #include <linux/mtd/partitions.h>
  27 #include <linux/mtd/physmap.h>
  28 #include <linux/mtd/mtd.h>
  29 #include <linux/mtd/map.h>
  30 #endif
  31
  32 #include <asm/cpu.h>
  33 #include <asm/bootinfo.h>
  34 #include <asm/irq.h>
  35 #include <asm/mips-boards/generic.h>
  36 #include <asm/mips-boards/prom.h>
  37 #include <asm/mips-boards/malta.h>
  38 #include <asm/mips-boards/maltaint.h>
  39 #include <asm/dma.h>
  40 #include <asm/time.h>
  41 #include <asm/traps.h>
  42 #ifdef CONFIG_VT
  43 #include <linux/console.h>
  44 #endif
  45
  46 extern void mips_reboot_setup(void);
  47 extern void mips_time_init(void);
  48 extern void mips_timer_setup(struct irqaction *irq);
  49 extern unsigned long mips_rtc_get_time(void);
  50
  51 #ifdef CONFIG_KGDB
  52 extern void kgdb_config(void);
  53 #endif
  54
  55 struct resource standard_io_resources[] = {
  56         { "dma1", 0x00, 0x1f, IORESOURCE_BUSY },
  57         { "timer", 0x40, 0x5f, IORESOURCE_BUSY },
  58         { "keyboard", 0x60, 0x6f, IORESOURCE_BUSY },
  59         { "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY },
  60         { "dma2", 0xc0, 0xdf, IORESOURCE_BUSY },
  61 };
  62
  63 #ifdef CONFIG_MTD
  64 static struct mtd_partition malta_mtd_partitions[] = {
  65         {
  66                 .name =         "YAMON",
  67                 .offset =       0x0,
  68                 .size =         0x100000,
  69                 .mask_flags =   MTD_WRITEABLE
  70         },
  71         {
  72                 .name =         "User FS",
  73                 .offset =       0x100000,
  74                 .size =         0x2e0000
  75         },
  76         {
  77                 .name =         "Board Config",
  78                 .offset =       0x3e0000,
  79                 .size =         0x020000,
  80                 .mask_flags =   MTD_WRITEABLE
  81         }
  82 };
  83
  84 #define number_partitions       (sizeof(malta_mtd_partitions)/sizeof(struct mtd_partition))
  85 #endif
  86
  87 const char *get_system_type(void)
  88 {
  89         return "MIPS Malta";
  90 }
  91
  92 #ifdef CONFIG_BLK_DEV_FD
  93 void __init fd_activate(void)
  94 {
  95         /*
  96          * Activate Floppy Controller in the SMSC FDC37M817 Super I/O
  97          * Controller.
  98          * Done by YAMON 2.00 onwards
  99          */
 100         /* Entering config state. */
 101         SMSC_WRITE(SMSC_CONFIG_ENTER, SMSC_CONFIG_REG);
 102
 103         /* Activate floppy controller. */
 104         SMSC_WRITE(SMSC_CONFIG_DEVNUM, SMSC_CONFIG_REG);
 105         SMSC_WRITE(SMSC_CONFIG_DEVNUM_FLOPPY, SMSC_DATA_REG);
 106         SMSC_WRITE(SMSC_CONFIG_ACTIVATE, SMSC_CONFIG_REG);
 107         SMSC_WRITE(SMSC_CONFIG_ACTIVATE_ENABLE, SMSC_DATA_REG);
 108
 109         /* Exit config state. */
 110         SMSC_WRITE(SMSC_CONFIG_EXIT, SMSC_CONFIG_REG);
 111 }
 112 #endif
 113
 114 void __init plat_setup(void)
 115 {
 116         unsigned int i;
 117
 118         mips_pcibios_init();
 119
 120         /* Request I/O space for devices used on the Malta board. */
 121         for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
 122                 request_resource(&ioport_resource, standard_io_resources+i);
 123
 124         /*
 125          * Enable DMA channel 4 (cascade channel) in the PIIX4 south bridge.
 126          */
 127         enable_dma(4);
 128
 129 #ifdef CONFIG_KGDB
 130         kgdb_config ();
 131 #endif
 132
 133         if ((mips_revision_corid == MIPS_REVISION_CORID_BONITO64) ||
 134             (mips_revision_corid == MIPS_REVISION_CORID_CORE_20K) ||
 135             (mips_revision_corid == MIPS_REVISION_CORID_CORE_EMUL_BON)) {
 136                 char *argptr;
 137
 138                 argptr = prom_getcmdline();
 139                 if (strstr(argptr, "debug")) {
 140                         BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE;
 141                         printk ("Enabled Bonito debug mode\n");
 142                 }
 143                 else
 144                         BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE;
 145
 146 #ifdef CONFIG_DMA_COHERENT
 147                 if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) {
 148                         BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN;
 149                         printk("Enabled Bonito CPU coherency\n");
 150
 151                         argptr = prom_getcmdline();
 152                         if (strstr(argptr, "iobcuncached")) {
 153                                 BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN;
 154                                 BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
 155                                         ~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
 156                                           BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
 157                                 printk("Disabled Bonito IOBC coherency\n");
 158                         }
 159                         else {
 160                                 BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN;
 161                                 BONITO_PCIMEMBASECFG |=
 162                                         (BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
 163                                          BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
 164                                 printk("Disabled Bonito IOBC coherency\n");
 165                         }
 166                 }
 167                 else
 168                         panic("Hardware DMA cache coherency not supported");
 169
 170 #endif
 171         }
 172 #ifdef CONFIG_DMA_COHERENT
 173         else {
 174                 panic("Hardware DMA cache coherency not supported");
 175         }
 176 #endif
 177
 178 #ifdef CONFIG_BLK_DEV_IDE
 179         /* Check PCI clock */
 180         {
 181                 int jmpr = (*((volatile unsigned int *)ioremap(MALTA_JMPRS_REG, sizeof(unsigned int))) >> 2) & 0x07;
 182                 static const int pciclocks[] __initdata = {
 183                         33, 20, 25, 30, 12, 16, 37, 10
 184                 };
 185                 int pciclock = pciclocks[jmpr];
 186                 char *argptr = prom_getcmdline();
 187
 188                 if (pciclock != 33 && !strstr (argptr, "idebus=")) {
 189                         printk("WARNING: PCI clock is %dMHz, setting idebus\n", pciclock);
 190                         argptr += strlen(argptr);
 191                         sprintf (argptr, " idebus=%d", pciclock);
 192                         if (pciclock < 20 || pciclock > 66)
 193                                 printk ("WARNING: IDE timing calculations will be incorrect\n");
 194                 }
 195         }
 196 #endif
 197 #ifdef CONFIG_BLK_DEV_FD
 198         fd_activate ();
 199 #endif
 200 #ifdef CONFIG_VT
 201 #if defined(CONFIG_VGA_CONSOLE)
 202         screen_info = (struct screen_info) {
 203                 0, 25,                  /* orig-x, orig-y */
 204                 0,                      /* unused */
 205                 0,                      /* orig-video-page */
 206                 0,                      /* orig-video-mode */
 207                 80,                     /* orig-video-cols */
 208                 0,0,0,                  /* ega_ax, ega_bx, ega_cx */
 209                 25,                     /* orig-video-lines */
 210                 VIDEO_TYPE_VGAC,        /* orig-video-isVGA */
 211                 16                      /* orig-video-points */
 212         };
 213 #endif
 214 #endif
 215
 216 #ifdef CONFIG_MTD
 217         /*
 218          * Support for MTD on Malta. Use the generic physmap driver
 219          */
 220         physmap_configure(0x1e000000, 0x400000, 4, NULL);
 221         physmap_set_partitions(malta_mtd_partitions, number_partitions);
 222 #endif
 223
 224         mips_reboot_setup();
 225
 226         board_time_init = mips_time_init;
 227         board_timer_setup = mips_timer_setup;
 228         rtc_get_time = mips_rtc_get_time;
 229 }