arch/powerpc/boot/cuboot-83xx.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Old U-boot compatibility for 83xx
   4  *
   5  * Author: Scott Wood <scottwood@freescale.com>
   6  *
   7  * Copyright (c) 2007 Freescale Semiconductor, Inc.
   8  */
   9
  10 #include "ops.h"
  11 #include "stdio.h"
  12 #include "cuboot.h"
  13
  14 #define TARGET_83xx
  15 #include "ppcboot.h"
  16
  17 static bd_t bd;
  18
  19 static void platform_fixups(void)
  20 {
  21         void *soc;
  22
  23         dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
  24         dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
  25         dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);
  26         dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);
  27
  28         /* Unfortunately, the specific model number is encoded in the
  29          * soc node name in existing dts files -- once that is fixed,
  30          * this can do a simple path lookup.
  31          */
  32         soc = find_node_by_devtype(NULL, "soc");
  33         if (soc) {
  34                 void *serial = NULL;
  35
  36                 setprop(soc, "bus-frequency", &bd.bi_busfreq,
  37                         sizeof(bd.bi_busfreq));
  38
  39                 while ((serial = find_node_by_devtype(serial, "serial"))) {
  40                         if (get_parent(serial) != soc)
  41                                 continue;
  42
  43                         setprop(serial, "clock-frequency", &bd.bi_busfreq,
  44                                 sizeof(bd.bi_busfreq));
  45                 }
  46         }
  47 }
  48
  49 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  50                    unsigned long r6, unsigned long r7)
  51 {
  52         CUBOOT_INIT();
  53         fdt_init(_dtb_start);
  54         serial_console_init();
  55         platform_ops.fixups = platform_fixups;
  56 }