tree 04e3614f81b2ac7b3091969427160de127f8d4c3
parent 8a1417de9e11f9f577499cd4fe89fa35f4bf54fa
author Andrew Isaacson <adi@broadcom.com> 1129791586 -0700
committer Ralf Baechle <ralf@linux-mips.org> 1130610769 +0100

pci-expmem-hack
    
CFE 1.2.5 and earlier fails to turn on the ExpMemEn bit in the
PCIFeatureControl register, which means that DMA does not work
beyond physical address 01_0000_0000, ergo to DRAM beyond 1GB.
    
With ExpMemEn turned on, 01_0000_0000-0f_ffff_ffff is mapped,
so DMA works for up to 61 GB of DRAM.
    
Will be fixed in CFE 1.2.6 (yet to be released).
    
Signed-Off-By: Andy Isaacson <adi@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>