diff options
| author | Andrew Isaacson <adi@broadcom.com> | 2005-10-19 23:59:46 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2005-10-29 19:32:49 +0100 |
| commit | cb4262481fce1d43ac9a483be4faf36fdd1c7abb (patch) | |
| tree | 04e3614f81b2ac7b3091969427160de127f8d4c3 /arch/mips/qemu/q-setup.c | |
| parent | 8a1417de9e11f9f577499cd4fe89fa35f4bf54fa (diff) | |
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>
Diffstat (limited to 'arch/mips/qemu/q-setup.c')
0 files changed, 0 insertions, 0 deletions