board/esd/pci405/cmd_pci405.c

   1 /*
   2  * (C) Copyright 2002-2004
   3  * Stefan Roese, esd gmbh germany, stefan.roese@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 #include <malloc.h>
  27 #include <net.h>
  28 #include <asm/io.h>
  29 #include <pci.h>
  30 #include <asm/4xx_pci.h>
  31 #include <asm/processor.h>
  32
  33 #include "pci405.h"
  34
  35 #if defined(CONFIG_CMD_BSP)
  36
  37 /*
  38  * Command loadpci: wait for signal from host and boot image.
  39  */
  40 int do_loadpci(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  41 {
  42         unsigned int *ptr = 0;
  43         int count = 0;
  44         int count2 = 0;
  45         int i;
  46         char addr[16];
  47         char str[] = "\\|/-";
  48         char *local_args[2];
  49
  50         /*
  51          * Mark sync address
  52          */
  53         ptr = 0;
  54         *ptr = 0xffffffff;
  55         puts("\nWaiting for image from pci host -");
  56
  57         /*
  58          * Wait for host to write the start address
  59          */
  60         while (*ptr == 0xffffffff) {
  61                 count++;
  62                 if (!(count % 100)) {
  63                         count2++;
  64                         putc(0x08); /* backspace */
  65                         putc(str[count2 % 4]);
  66                 }
  67
  68                 /* Abort if ctrl-c was pressed */
  69                 if (ctrlc()) {
  70                         puts("\nAbort\n");
  71                         return 0;
  72                 }
  73
  74                 udelay(1000);
  75         }
  76
  77         if (*ptr == PCI_RECONFIG_MAGIC) {
  78                 /*
  79                  * Save own pci configuration in PRAM
  80                  */
  81                 memset((char *)PCI_REGS_ADDR, 0, PCI_REGS_LEN);
  82                 ptr = (unsigned int *)PCI_REGS_ADDR + 1;
  83                 for (i=0; i<0x40; i+=4) {
  84                         pci_read_config_dword(PCIDEVID_405GP, i, ptr++);
  85                 }
  86                 ptr = (unsigned int *)PCI_REGS_ADDR;
  87                 *ptr = crc32(0, (uchar *)PCI_REGS_ADDR+4, PCI_REGS_LEN-4);
  88
  89                 printf("\nStoring PCI Configuration Regs...\n");
  90         } else {
  91                 sprintf(addr, "%08x", *ptr);
  92
  93                 /*
  94                  * Boot image via bootm
  95                  */
  96                 printf("\nBooting Image at addr 0x%s ...\n", addr);
  97                 setenv("loadaddr", addr);
  98
  99                 local_args[0] = argv[0];
 100                 local_args[1] = NULL;
 101                 do_bootm (cmdtp, 0, 1, local_args);
 102         }
 103
 104         return 0;
 105 }
 106 U_BOOT_CMD(
 107         loadpci,        1,      1,      do_loadpci,
 108         "Wait for pci-image and boot it",
 109         ""
 110 );
 111 #endif