LXR uboot/board/esd/pci405/cmd

   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
  37extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
  38
  39/*
  40 * Command loadpci: wait for signal from host and boot image.
  41 */
  42int do_loadpci(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  43{
  44        unsigned int *ptr = 0;
  45        int count = 0;
  46        int count2 = 0;
  47        int status;
  48        int i;
  49        char addr[16];
  50        char str[] = "\\|/-";
  51        char *local_args[2];
  52
  53        /*
  54         * Mark sync address
  55         */
  56        ptr = 0;
  57        *ptr = 0xffffffff;
  58        puts("\nWaiting for image from pci host -");
  59
  60        /*
  61         * Wait for host to write the start address
  62         */
  63        while (*ptr == 0xffffffff) {
  64                count++;
  65                if (!(count % 100)) {
  66                        count2++;
  67                        putc(0x08); /* backspace */
  68                        putc(str[count2 % 4]);
  69                }
  70
  71                /* Abort if ctrl-c was pressed */
  72                if (ctrlc()) {
  73                        puts("\nAbort\n");
  74                        return 0;
  75                }
  76
  77                udelay(1000);
  78        }
  79
  80        if (*ptr == PCI_RECONFIG_MAGIC) {
  81                /*
  82                 * Save own pci configuration in PRAM
  83                 */
  84                memset((char *)PCI_REGS_ADDR, 0, PCI_REGS_LEN);
  85                ptr = (unsigned int *)PCI_REGS_ADDR + 1;
  86                for (i=0; i<0x40; i+=4) {
  87                        pci_read_config_dword(PCIDEVID_405GP, i, ptr++);
  88                }
  89                ptr = (unsigned int *)PCI_REGS_ADDR;
  90                *ptr = crc32(0, (uchar *)PCI_REGS_ADDR+4, PCI_REGS_LEN-4);
  91
  92                printf("\nStoring PCI Configuration Regs...\n");
  93        } else {
  94                sprintf(addr, "%08x", *ptr);
  95
  96                /*
  97                 * Boot image via bootm
  98                 */
  99                printf("\nBooting Image at addr 0x%s ...\n", addr);
 100                setenv("loadaddr", addr);
 101
 102                local_args[0] = argv[0];
 103                local_args[1] = NULL;
 104                status = do_bootm (cmdtp, 0, 1, local_args);
 105        }
 106
 107        return 0;
 108}
 109U_BOOT_CMD(
 110        loadpci,        1,      1,      do_loadpci,
 111        "Wait for pci-image and boot it",
 112        ""
 113);
 114#endif
 115