arch/powerpc/boot/ep88xc.c

   1 /*
   2  * Embedded Planet EP88xC with PlanetCore firmware
   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 "planetcore.h"
  16 #include "mpc8xx.h"
  17
  18 static char *table;
  19 static u64 mem_size;
  20
  21 static void platform_fixups(void)
  22 {
  23         u64 val;
  24
  25         dt_fixup_memory(0, mem_size);
  26         planetcore_set_mac_addrs(table);
  27
  28         if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
  29                 printf("No PlanetCore crystal frequency key.\r\n");
  30                 return;
  31         }
  32
  33         mpc885_fixup_clocks(val);
  34 }
  35
  36 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  37                    unsigned long r6, unsigned long r7)
  38 {
  39         table = (char *)r3;
  40         planetcore_prepare_table(table);
  41
  42         if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
  43                 return;
  44
  45         mem_size *= 1024 * 1024;
  46         simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
  47
  48         ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
  49
  50         planetcore_set_stdout_path(table);
  51
  52         serial_console_init();
  53         platform_ops.fixups = platform_fixups;
  54 }