diff options
Diffstat (limited to 'target/linux/orion/patches/005-dram_mapping_granularity_is_64kib.patch')
| -rw-r--r-- | target/linux/orion/patches/005-dram_mapping_granularity_is_64kib.patch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/target/linux/orion/patches/005-dram_mapping_granularity_is_64kib.patch b/target/linux/orion/patches/005-dram_mapping_granularity_is_64kib.patch new file mode 100644 index 0000000000..2e7815de27 --- /dev/null +++ b/target/linux/orion/patches/005-dram_mapping_granularity_is_64kib.patch @@ -0,0 +1,26 @@ +The DRAM base address and size fields in the CPU's MBUS bridge have +64KiB granularity, instead of the currently used 16MiB. Since all +of the currently supported MBUS peripherals support 64KiB granularity +as well, this patch changes the Orion address map code to stop +rounding base addresses down and sizes up to multiples of 16MiB. + +Found by Ke Wei <kewei@marvell.com>. + +Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> +--- + arch/arm/mach-orion5x/addr-map.c | 4 ++-- + 1 files changed, 2 insertions(+), 2 deletions(-) + +--- a/arch/arm/mach-orion5x/addr-map.c ++++ b/arch/arm/mach-orion5x/addr-map.c +@@ -152,8 +152,8 @@ + w = &orion5x_mbus_dram_info.cs[cs++]; + w->cs_index = i; + w->mbus_attr = 0xf & ~(1 << i); +- w->base = base & 0xff000000; +- w->size = (size | 0x00ffffff) + 1; ++ w->base = base & 0xffff0000; ++ w->size = (size | 0x0000ffff) + 1; + } + } + orion5x_mbus_dram_info.num_cs = cs; |