arch/powerpc/boot/cuboot-warp.c

   1 /*
   2  * Copyright (c) 2008 PIKA Technologies
   3  *   Sean MacLennan <smaclennan@pikatech.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published
   7  * by the Free Software Foundation.
   8  */
   9
  10 #include "ops.h"
  11 #include "4xx.h"
  12 #include "cuboot.h"
  13 #include "stdio.h"
  14
  15 #define TARGET_4xx
  16 #define TARGET_44x
  17 #include "ppcboot.h"
  18
  19 static bd_t bd;
  20
  21 static void warp_fixup_one_nor(u32 from, u32 to)
  22 {
  23         void *devp;
  24         char name[50];
  25         u32 v[2];
  26
  27         sprintf(name, "/plb/opb/ebc/nor_flash@0,0/partition@%x", from);
  28
  29         devp = finddevice(name);
  30         if (!devp)
  31                 return;
  32
  33         if (getprop(devp, "reg", v, sizeof(v)) == sizeof(v)) {
  34                 v[0] = to;
  35                 setprop(devp, "reg", v, sizeof(v));
  36
  37                 printf("NOR 64M fixup %x -> %x\r\n", from, to);
  38         }
  39 }
  40
  41
  42 static void warp_fixups(void)
  43 {
  44         ibm440ep_fixup_clocks(66000000, 11059200, 50000000);
  45         ibm4xx_sdram_fixup_memsize();
  46         ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
  47         dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
  48
  49         /* Fixup for 64M flash on Rev A boards. */
  50         if (bd.bi_flashsize == 0x4000000) {
  51                 void *devp;
  52                 u32 v[3];
  53
  54                 devp = finddevice("/plb/opb/ebc/nor_flash@0,0");
  55                 if (!devp)
  56                         return;
  57
  58                 /* Fixup the size */
  59                 if (getprop(devp, "reg", v, sizeof(v)) == sizeof(v)) {
  60                         v[2] = bd.bi_flashsize;
  61                         setprop(devp, "reg", v, sizeof(v));
  62                 }
  63
  64                 /* Fixup parition offsets */
  65                 warp_fixup_one_nor(0x300000, 0x3f00000);
  66                 warp_fixup_one_nor(0x340000, 0x3f40000);
  67                 warp_fixup_one_nor(0x380000, 0x3f80000);
  68         }
  69 }
  70
  71
  72 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  73                    unsigned long r6, unsigned long r7)
  74 {
  75         CUBOOT_INIT();
  76
  77         platform_ops.fixups = warp_fixups;
  78         platform_ops.exit = ibm44x_dbcr_reset;
  79         fdt_init(_dtb_start);
  80         serial_console_init();
  81 }