board/esd/common/cmd_loadpci.c

   1 /*
   2  * (C) Copyright 2005
   3  * Matthias Fuchs, esd GmbH Germany, matthias.fuchs@esd-electronics.com
   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 <common.h>
  25 #include <command.h>
  26
  27 #if defined(CONFIG_CMD_BSP)
  28
  29 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
  30 extern int do_autoscript (cmd_tbl_t *, int, int, char *[]);
  31
  32 #define ADDRMASK 0xfffff000
  33
  34 /*
  35  * Command loadpci: wait for signal from host and boot image.
  36  */
  37 int do_loadpci(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  38 {
  39         unsigned int *ptr = 0;
  40         int count = 0;
  41         int count2 = 0;
  42         char addr[16];
  43         char str[] = "\\|/-";
  44         char *local_args[2];
  45
  46         while(1) {
  47                 /*
  48                  * Mark sync address
  49                  */
  50                 ptr = 0;
  51                 memset(ptr, 0, 0x20);
  52
  53                 *ptr = 0xffffffff;
  54                 puts("\nWaiting for action from pci host -");
  55
  56                 /*
  57                  * Wait for host to write the start address
  58                  */
  59                 while (*ptr == 0xffffffff) {
  60                         count++;
  61                         if (!(count % 100)) {
  62                                 count2++;
  63                                 putc(0x08); /* backspace */
  64                                 putc(str[count2 % 4]);
  65                         }
  66
  67                         /* Abort if ctrl-c was pressed */
  68                         if (ctrlc()) {
  69                                 puts("\nAbort\n");
  70                                 return 0;
  71                         }
  72
  73                         udelay(1000);
  74                 }
  75
  76                 printf("\nGot bootcode %08x: ", *ptr);
  77                 sprintf(addr, "%08x", *ptr & ADDRMASK);
  78
  79                 switch (*ptr & ~ADDRMASK) {
  80                 case 0:
  81                         /*
  82                          * Boot image via bootm
  83                          */
  84                         printf("booting image at addr 0x%s ...\n", addr);
  85                         setenv("loadaddr", addr);
  86
  87                         do_bootm (cmdtp, 0, 0, NULL);
  88                         break;
  89
  90                 case 1:
  91                         /*
  92                          * Boot image via autoscr
  93                          */
  94                         printf("executing script at addr 0x%s ...\n", addr);
  95
  96                         local_args[0] = addr;
  97                         local_args[1] = NULL;
  98                         do_autoscript(cmdtp, 0, 1, local_args);
  99                         break;
 100
 101                 case 2:
 102                         /*
 103                          * Call run_cmd
 104                          */
 105                         printf("running command at addr 0x%s ...\n", addr);
 106                         run_command ((char*)(*ptr & ADDRMASK), 0);
 107                         break;
 108
 109                 default:
 110                         printf("unhandled boot method\n");
 111                         break;
 112                 }
 113         }
 114 }
 115
 116 U_BOOT_CMD(
 117         loadpci,        1,      1,      do_loadpci,
 118         "loadpci - Wait for pci bootcmd and boot it\n",
 119         NULL
 120         );
 121
 122 #endif