target/linux/orion/patches/005-dram_mapping_granularity_is_64kib.patch

   1 The DRAM base address and size fields in the CPU's MBUS bridge have
   2 64KiB granularity, instead of the currently used 16MiB.  Since all
   3 of the currently supported MBUS peripherals support 64KiB granularity
   4 as well, this patch changes the Orion address map code to stop
   5 rounding base addresses down and sizes up to multiples of 16MiB.
   6
   7 Found by Ke Wei <kewei@marvell.com>.
   8
   9 Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
  10 ---
  11  arch/arm/mach-orion5x/addr-map.c |    4 ++--
  12  1 files changed, 2 insertions(+), 2 deletions(-)
  13
  14 --- a/arch/arm/mach-orion5x/addr-map.c
  15 +++ b/arch/arm/mach-orion5x/addr-map.c
  16 @@ -152,8 +152,8 @@
  17                         w = &orion5x_mbus_dram_info.cs[cs++];
  18                         w->cs_index = i;
  19                         w->mbus_attr = 0xf & ~(1 << i);
  20 -                       w->base = base & 0xff000000;
  21 -                       w->size = (size | 0x00ffffff) + 1;
  22 +                       w->base = base & 0xffff0000;
  23 +                       w->size = (size | 0x0000ffff) + 1;
  24                 }
  25         }
  26         orion5x_mbus_dram_info.num_cs = cs;