common/lynxkdi.c

   1 /*
   2  * Copyright (c) Orbacom Systems, Inc <www.orbacom.com>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are freely
   6  * permitted provided that the above copyright notice and this
   7  * paragraph and the following disclaimer are duplicated in all
   8  * such forms.
   9  *
  10  * This software is provided "AS IS" and without any express or
  11  * implied warranties, including, without limitation, the implied
  12  * warranties of merchantability and fitness for a particular
  13  * purpose.
  14  */
  15
  16 #include <common.h>
  17 #include <asm/processor.h>
  18 #include <image.h>
  19
  20 #include <lynxkdi.h>
  21
  22 DECLARE_GLOBAL_DATA_PTR;
  23
  24 #if defined(CONFIG_MPC8260) || defined(CONFIG_440EP) || defined(CONFIG_440GR)
  25 void lynxkdi_boot (image_header_t *hdr)
  26 {
  27         void (*lynxkdi)(void) = (void(*)(void))image_get_ep (hdr);
  28         lynxos_bootparms_t *parms = (lynxos_bootparms_t *)0x0020;
  29         bd_t *kbd;
  30         u32 *psz = (u32 *)(image_get_load (hdr) + 0x0204);
  31
  32         memset (parms, 0, sizeof(*parms));
  33         kbd = gd->bd;
  34         parms->clock_ref = kbd->bi_busfreq;
  35         parms->dramsz = kbd->bi_memsize;
  36         eth_getenv_enetaddr("ethaddr", parms->ethaddr);
  37         mtspr (SPRN_SPRG2, 0x0020);
  38
  39         /* Do a simple check for Bluecat so we can pass the
  40          * kernel command line parameters.
  41          */
  42         if (le32_to_cpu (*psz) == image_get_data_size (hdr)) {  /* FIXME: NOT SURE HERE ! */
  43                 char *args;
  44                 char *cmdline = (char *)(image_get_load (hdr) + 0x020c);
  45                 int len;
  46
  47                 printf ("Booting Bluecat KDI ...\n");
  48                 udelay (200*1000); /* Allow serial port to flush */
  49                 if ((args = getenv ("bootargs")) == NULL)
  50                         args = "";
  51                 /* Prepend the cmdline */
  52                 len = strlen (args);
  53                 if (len && (len + strlen (cmdline) + 2 < (0x0400 - 0x020c))) {
  54                         memmove (cmdline + strlen (args) + 1, cmdline, strlen (cmdline));
  55                         strcpy (cmdline, args);
  56                         cmdline[len] = ' ';
  57                 }
  58         }
  59         else {
  60                 printf ("Booting LynxOS KDI ...\n");
  61         }
  62
  63         lynxkdi ();
  64 }
  65 #else
  66 #error "Lynx KDI support not implemented for configured CPU"
  67 #endif