This is version 2 of the patch I sent yesterday, now with proper SEC
support. The series makes OvmfPkg's PlatformDebugLibIoPort library
skip I/O port writes when the debug port device wasn't added to the
virtual machine.
Patch 1 creates a separate PlatformDebugLibIoPort instance for SEC, so
that the non-SEC version will be able to use a writable global variable.
Patch 2 then adds the detection machinery to both library instances.
The commit messages in both patches liberally pillage Laszlo's v1 review.
Thanks,
Paolo
Paolo Bonzini (2):
OvmfPkg: create a separate PlatformDebugLibIoPort instance for SEC
OvmfPkg: save on I/O port accesses when the debug port is not in use
OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c | 41 ++++++++--------
.../PlatformDebugLibIoPort/DebugLibDetect.c | 55 +++++++++++++++++++++
.../PlatformDebugLibIoPort/DebugLibDetect.h | 56 ++++++++++++++++++++++
.../PlatformDebugLibIoPort/DebugLibDetectRom.c | 48 +++++++++++++++++++
.../PlatformDebugLibIoPort.inf | 1 +
.../PlatformRomDebugLibIoPort.inf | 52 ++++++++++++++++++++
OvmfPkg/OvmfPkgIa32.dsc | 2 +-
OvmfPkg/OvmfPkgIa32X64.dsc | 2 +-
OvmfPkg/OvmfPkgX64.dsc | 2 +-
9 files changed, 237 insertions(+), 22 deletions(-)
create mode 100644 OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetect.c
create mode 100644 OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetect.h
create mode 100644 OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetectRom.c
create mode 100644 OvmfPkg/Library/PlatformDebugLibIoPort/PlatformRomDebugLibIoPort.inf
--
2.14.3
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