release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/boot/cuboot-83xx.c

   1 /*
   2  * Old U-boot compatibility for 83xx
   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_83xx
  18 #include "ppcboot.h"
  19
  20 static bd_t bd;
  21
  22 static void platform_fixups(void)
  23 {
  24         void *soc;
  25
  26         dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
  27         dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
  28         dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);
  29         dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);
  30
  31         /* Unfortunately, the specific model number is encoded in the
  32          * soc node name in existing dts files -- once that is fixed,
  33          * this can do a simple path lookup.
  34          */
  35         soc = find_node_by_devtype(NULL, "soc");
  36         if (soc) {
  37                 void *serial = NULL;
  38
  39                 setprop(soc, "bus-frequency", &bd.bi_busfreq,
  40                         sizeof(bd.bi_busfreq));
  41
  42                 while ((serial = find_node_by_devtype(serial, "serial"))) {
  43                         if (get_parent(serial) != soc)
  44                                 continue;
  45
  46                         setprop(serial, "clock-frequency", &bd.bi_busfreq,
  47                                 sizeof(bd.bi_busfreq));
  48                 }
  49         }
  50 }
  51
  52 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  53                    unsigned long r6, unsigned long r7)
  54 {
  55         CUBOOT_INIT();
  56         fdt_init(_dtb_start);
  57         serial_console_init();
  58         platform_ops.fixups = platform_fixups;
  59 }