arch/powerpc/boot/ep8248e.c

   1 /*
   2  * Embedded Planet EP8248E 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 "pq2.h"
  17
  18 static char *table;
  19 static u64 mem_size;
  20
  21 #include <io.h>
  22
  23 static void platform_fixups(void)
  24 {
  25         u64 val;
  26
  27         dt_fixup_memory(0, mem_size);
  28         planetcore_set_mac_addrs(table);
  29
  30         if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
  31                 printf("No PlanetCore crystal frequency key.\r\n");
  32                 return;
  33         }
  34
  35         pq2_fixup_clocks(val);
  36 }
  37
  38 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  39                    unsigned long r6, unsigned long r7)
  40 {
  41         table = (char *)r3;
  42         planetcore_prepare_table(table);
  43
  44         if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
  45                 return;
  46
  47         mem_size *= 1024 * 1024;
  48         simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
  49
  50         fdt_init(_dtb_start);
  51
  52         planetcore_set_stdout_path(table);
  53         serial_console_init();
  54         platform_ops.fixups = platform_fixups;
  55 }