release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/boot/cuboot-85xx.c

   1 /*
   2  * Old U-boot compatibility for 85xx
   3  *
   4  * Author: Scott Wood <scottwood@freescale.com>
   5  *
   6  * Copyright (c) 2007 Freescale Semiconductor, Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License version 2 as published
  10  * by the Free Software Foundation.
  11  */
  12
  13 #include "ops.h"
  14 #include "stdio.h"
  15 #include "cuboot.h"
  16
  17 #define TARGET_85xx
  18 #define TARGET_HAS_ETH3
  19 #include "ppcboot.h"
  20
  21 static bd_t bd;
  22
  23 static void platform_fixups(void)
  24 {
  25         void *soc;
  26
  27         dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
  28         dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
  29         dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);
  30         dt_fixup_mac_address_by_alias("ethernet2", bd.bi_enet2addr);
  31         dt_fixup_mac_address_by_alias("ethernet3", bd.bi_enet3addr);
  32         dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 8, bd.bi_busfreq);
  33
  34         /* Unfortunately, the specific model number is encoded in the
  35          * soc node name in existing dts files -- once that is fixed,
  36          * this can do a simple path lookup.
  37          */
  38         soc = find_node_by_devtype(NULL, "soc");
  39         if (soc) {
  40                 void *serial = NULL;
  41
  42                 setprop(soc, "bus-frequency", &bd.bi_busfreq,
  43                         sizeof(bd.bi_busfreq));
  44
  45                 while ((serial = find_node_by_devtype(serial, "serial"))) {
  46                         if (get_parent(serial) != soc)
  47                                 continue;
  48
  49                         setprop(serial, "clock-frequency", &bd.bi_busfreq,
  50                                 sizeof(bd.bi_busfreq));
  51                 }
  52         }
  53 }
  54
  55 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  56                    unsigned long r6, unsigned long r7)
  57 {
  58         CUBOOT_INIT();
  59         fdt_init(_dtb_start);
  60         serial_console_init();
  61         platform_ops.fixups = platform_fixups;
  62 }