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 #if defined(CONFIG_LYNXKDI)
  21 #include <lynxkdi.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 #if defined(CONFIG_MPC8260) || defined(CONFIG_440EP) || defined(CONFIG_440GR)
  26 void lynxkdi_boot ( image_header_t *hdr )
  27 {
  28         void (*lynxkdi)(void) = (void(*)(void)) ntohl(hdr->ih_ep);
  29         lynxos_bootparms_t *parms = (lynxos_bootparms_t *)0x0020;
  30         bd_t *kbd;
  31         u32 *psz = (u32 *)(ntohl(hdr->ih_load) + 0x0204);
  32
  33         memset( parms, 0, sizeof(*parms));
  34         kbd = gd->bd;
  35         parms->clock_ref = kbd->bi_busfreq;
  36         parms->dramsz = kbd->bi_memsize;
  37         memcpy(parms->ethaddr, kbd->bi_enetaddr, 6);
  38         mtspr(SPRN_SPRG2, 0x0020);
  39
  40         /* Do a simple check for Bluecat so we can pass the
  41          * kernel command line parameters.
  42          */
  43         if( le32_to_cpu(*psz) == ntohl(hdr->ih_size) ){ /* FIXME: NOT SURE HERE ! */
  44             char *args;
  45             char *cmdline = (char *)(ntohl(hdr->ih_load) + 0x020c);
  46             int len;
  47
  48             printf("Booting Bluecat KDI ...\n");
  49             udelay(200*1000); /* Allow serial port to flush */
  50             if ((args = getenv("bootargs")) == NULL)
  51                     args = "";
  52             /* Prepend the cmdline */
  53             len = strlen(args);
  54             if( len && (len + strlen(cmdline) + 2 < (0x0400 - 0x020c))) {
  55                 memmove( cmdline + strlen(args) + 1, cmdline, strlen(cmdline) );
  56                 strcpy( cmdline, args );
  57                 cmdline[len] = ' ';
  58             }
  59         }
  60         else {
  61             printf("Booting LynxOS KDI ...\n");
  62         }
  63
  64         lynxkdi();
  65 }
  66 #else
  67 #error "Lynx KDI support not implemented for configured CPU"
  68 #endif
  69
  70 #endif  /* CONFIG_LYNXKDI */