board/pcippc2/pcippc2.c

   1 /*
   2  * (C) Copyright 2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <config.h>
  25 #include <common.h>
  26 #include <command.h>
  27 #include <asm/io.h>
  28 #include <linux/mtd/doc2000.h>
  29 #include <watchdog.h>
  30 #include <pci.h>
  31
  32 #include "hardware.h"
  33 #include "pcippc2.h"
  34 #include "sconsole.h"
  35 #include "fpga_serial.h"
  36
  37 DECLARE_GLOBAL_DATA_PTR;
  38
  39 #if defined(CONFIG_WATCHDOG)
  40
  41 static int pcippc2_wdt_init_done = 0;
  42
  43 void pcippc2_wdt_init (void);
  44
  45 #endif
  46
  47   /* Check board identity
  48    */
  49 int checkboard (void)
  50 {
  51 #ifdef CONFIG_PCIPPC2
  52         puts ("Board: Gespac PCIPPC-2\n");
  53 #else
  54         puts ("Board: Gespac PCIPPC-6\n");
  55 #endif
  56         return 0;
  57 }
  58
  59   /* RAM size is stored in CPC0_RGBAN1
  60    */
  61 u32 pcippc2_sdram_size (void)
  62 {
  63         return in32 (REG (CPC0, RGBAN1));
  64 }
  65
  66 phys_size_t initdram (int board_type)
  67 {
  68         return cpc710_ram_init ();
  69 }
  70
  71 int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  72 {
  73         out32 (REG (CPC0, SPOR), 0);
  74         iobarrier_rw ();
  75         while (1);
  76         /* notreached */
  77         return (-1);
  78 }
  79
  80 int board_early_init_f (void)
  81 {
  82         out32 (REG (CPC0, RSTR), 0xC0000000);
  83         iobarrier_rw ();
  84
  85         out32 (REG (CPC0, RSTR), 0xF0000000);
  86         iobarrier_rw ();
  87
  88         out32 (REG (CPC0, UCTL), 0x00F80000);
  89
  90         out32 (REG (CPC0, SIOC0), 0x30000000);
  91
  92         out32 (REG (CPC0, ABCNTL), 0x00000000);
  93
  94         out32 (REG (CPC0, SESR), 0x00000000);
  95         out32 (REG (CPC0, SEAR), 0x00000000);
  96
  97         /* Detect IBM Avignon CPC710 Revision */
  98         if ((in32 (REG (CPC0, UCTL)) & 0x000000F0) == CPC710_TYPE_100P)
  99                 out32 (REG (CPC0, PGCHP), 0xA0000040);
 100         else
 101                 out32 (REG (CPC0, PGCHP), 0x80800040);
 102
 103
 104         out32 (REG (CPC0, ATAS), 0x709C2508);
 105
 106         iobarrier_rw ();
 107
 108         return 0;
 109 }
 110
 111 void after_reloc (ulong dest_addr)
 112 {
 113         /* Jump to the main U-Boot board init code
 114          */
 115         board_init_r ((gd_t *)gd, dest_addr);
 116 }
 117
 118 int misc_init_r (void)
 119 {
 120         pcippc2_fpga_init ();
 121
 122         pcippc2_cpci3264_init ();
 123
 124 #if defined(CONFIG_WATCHDOG)
 125         pcippc2_wdt_init ();
 126 #endif
 127
 128         fpga_serial_init (sconsole_get_baudrate ());
 129
 130         sconsole_putc   = fpga_serial_putc;
 131         sconsole_puts   = fpga_serial_puts;
 132         sconsole_getc   = fpga_serial_getc;
 133         sconsole_tstc   = fpga_serial_tstc;
 134         sconsole_setbrg = fpga_serial_setbrg;
 135
 136         sconsole_flush ();
 137         return (0);
 138 }
 139
 140 void pci_init_board (void)
 141 {
 142         cpc710_pci_init ();
 143
 144         /* FPGA requires no retry timeouts to be enabled
 145          */
 146         cpc710_pci_enable_timeout ();
 147 }
 148
 149 void doc_init (void)
 150 {
 151         doc_probe (pcippc2_fpga1_phys + HW_FPGA1_DOC);
 152 }
 153
 154 void pcippc2_cpci3264_init (void)
 155 {
 156   pci_dev_t             bdf = pci_find_device(FPGA_VENDOR_ID, FPGA_DEVICE_ID, 0);
 157
 158   if (bdf == -1)
 159   {
 160     puts("Unable to find FPGA !\n");
 161     hang();
 162   }
 163
 164         if((in32(pcippc2_fpga0_phys + HW_FPGA0_BOARD) & 0x01000000) == 0x01000000)
 165         /* 32-bits Compact PCI bus - LSB bit */
 166         {
 167                 iobarrier_rw();
 168                 out32(BRIDGE(CPCI, PCIDG), 0x40000000); /* 32-bits bridge, Pipeline */
 169                 iobarrier_rw();
 170         }
 171 }
 172
 173 #if defined(CONFIG_WATCHDOG)
 174
 175 void pcippc2_wdt_init (void)
 176 {
 177         out16r (FPGA (WDT, PROG), 0xffff);
 178         out8 (FPGA (WDT, CTRL), 0x1);
 179
 180         pcippc2_wdt_init_done = 1;
 181 }
 182
 183 void pcippc2_wdt_done (void)
 184 {
 185         out8 (FPGA (WDT, CTRL), 0x0);
 186
 187         pcippc2_wdt_init_done = 0;
 188 }
 189
 190 void pcippc2_wdt_reset (void)
 191 {
 192         if (pcippc2_wdt_init_done == 1)
 193                 out8 (FPGA (WDT, REFRESH), 0x56);
 194 }
 195
 196 void watchdog_reset (void)
 197 {
 198         int re_enable = disable_interrupts ();
 199
 200         pcippc2_wdt_reset ();
 201         if (re_enable)
 202                 enable_interrupts ();
 203 }
 204
 205 #if defined(CONFIG_CMD_BSP)
 206 int do_wd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 207 {
 208         switch (argc) {
 209         case 1:
 210                 printf ("Watchdog timer status is %s\n",
 211                         pcippc2_wdt_init_done == 1 ? "on" : "off");
 212
 213                 return 0;
 214         case 2:
 215                 if (!strcmp(argv[1],"on")) {
 216                         pcippc2_wdt_init();
 217                         printf("Watchdog timer now is on\n");
 218
 219                         return 0;
 220
 221                 } else if (!strcmp(argv[1],"off")) {
 222                         pcippc2_wdt_done();
 223                         printf("Watchdog timer now is off\n");
 224
 225                         return 0;
 226
 227                 } else
 228                         break;
 229         default:
 230                 break;
 231         }
 232         printf ("Usage:\n%s\n", cmdtp->usage);
 233         return 1;
 234 }
 235
 236 U_BOOT_CMD(
 237         wd,     2,      1,      do_wd,
 238         "wd      - check and set watchdog\n",
 239         "on   - switch watchDog on\n"
 240         "wd off  - switch watchdog off\n"
 241         "wd      - print current status\n"
 242 );
 243
 244 #endif
 245 #endif  /* CONFIG_WATCHDOG */