diff options
| author | Laszlo Ersek <lersek@redhat.com> | 2015-02-23 16:03:32 +0000 |
|---|---|---|
| committer | lersek <lersek@Edk2> | 2015-02-23 16:03:32 +0000 |
| commit | 1ff2b5a833ab9000f73dfc771a5d730f3c3a8db1 (patch) | |
| tree | afa8afcfe448d64be299c0fb3558b744e6f341de /ArmPkg | |
| parent | 286c88bcce13dc88fffbcedd0fd2455790078e97 (diff) | |
| download | edk2-platforms-1ff2b5a833ab9000f73dfc771a5d730f3c3a8db1.tar.xz | |
ArmVirtualizationPkg/ArmVirtualizationQemu: enable IO addressing
Set gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize to 16, which determines the
maximum "I/O address width".
This ensures, through the BuildCpuHob() call in
"ArmPkg/Drivers/CpuPei/CpuPei.c", that the inital I/O Space Map will
consist of a 16-bit wide "splittable" entry, when the DXE core starts (see
CoreInitializeGcdServices() in "MdeModulePkg/Core/Dxe/Gcd/Gcd.c"):
GCD:Initial GCD I/O Space Map
GCDIoType Range
========== =================================
NonExist 0000000000000000-000000000000FFFF
Otherwise this range would have size 0, and (since it could not be split)
any gDS->AddIoSpace() calls would fail.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Olivier Martin <Olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16902 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg')
0 files changed, 0 insertions, 0 deletions