target/linux/coldfire/patches/063-m5445x_rambar_config.patch

   1 From 6651009d31bfcb8e364e25e944618465f510bd0b Mon Sep 17 00:00:00 2001
   2 From: Kurt Mahan <kmahan@freescale.com>
   3 Date: Tue, 24 Jun 2008 21:23:58 -0600
   4 Subject: [PATCH] Update SRAM/RAMBAR1 configuration for M5445x.
   5
   6 LTIBName: m5445x-rambar-config
   7 Signed-off-by: Kurt Mahan <kmahan@freescale.com>
   8 ---
   9  arch/m68k/coldfire/head.S   |    5 +++--
  10  include/asm-m68k/coldfire.h |    9 +++++++--
  11  2 files changed, 10 insertions(+), 4 deletions(-)
  12
  13 --- a/arch/m68k/coldfire/head.S
  14 +++ b/arch/m68k/coldfire/head.S
  15 @@ -285,8 +285,9 @@ ENTRY(__start)
  16         movel   %a0,%usp
  17
  18  #if defined(CONFIG_M5445X)
  19 -       movel  #(MCF_RAMBAR1 + 0x221), %d0
  20 -       movec   %d0, %rambar1
  21 +/* JKM -- don't enable it currently -- fix     */
  22 +/*     movel  #(MCF_RAMBAR1 + 0x221), %d0      */
  23 +/*     movec   %d0, %rambar1                   */
  24  #elif defined(CONFIG_M547X_8X)
  25         movel   #MCF_MBAR, %d0
  26         movec   %d0, %mbar
  27 --- a/include/asm-m68k/coldfire.h
  28 +++ b/include/asm-m68k/coldfire.h
  29 @@ -3,8 +3,13 @@
  30
  31  #if defined(CONFIG_M5445X)
  32  #define MCF_MBAR       0x0
  33 -#define MCF_RAMBAR1    0x80000000
  34 -#define MCF_SRAM       0x80000000
  35 +/*
  36 + * Even though RAMBAR1 should be in the 0x8xxxxxxx range there
  37 + * is a problem that needs to be resolved.  Currently head.S
  38 + * disables SRAM/RAMBAR1.
  39 + */
  40 +#define MCF_RAMBAR1    0x40000000
  41 +#define MCF_SRAM       0x40000000
  42  #elif defined(CONFIG_M547X_8X)
  43  #define MCF_MBAR       0xF0000000
  44  #define MCF_MMUBAR     0xF1000000