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| author | Laszlo Ersek <lersek@redhat.com> | 2020-01-29 19:53:18 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2020-02-05 12:59:32 +0000 |
| commit | 50f911d25d39b6c152b64f023677eb6625654faa (patch) | |
| tree | 61198297a634f27f11a0681542fbe79bc6dee408 /OvmfPkg/OvmfXen.dsc | |
| parent | 9108fc17b09cf89a6dad0dcad3e15fb884ccf707 (diff) | |
| download | edk2-50f911d25d39b6c152b64f023677eb6625654faa.tar.gz edk2-50f911d25d39b6c152b64f023677eb6625654faa.tar.bz2 edk2-50f911d25d39b6c152b64f023677eb6625654faa.zip | |
OvmfPkg: introduce PcdCsmEnable feature flag
In the DXE phase and later, it is possible for a module to dynamically
determine whether a CSM is enabled. An example can be seen in commit
855743f71774 ("OvmfPkg: prevent 64-bit MMIO BAR degradation if there is no
CSM", 2016-05-25).
SEC and PEI phase modules cannot check the Legacy BIOS Protocol however.
For their sake, introduce a new feature PCD that simply reflects the
CSM_ENABLE build flag.
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Julien Grall <julien@xen.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1512
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200129214412.2361-11-lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Diffstat (limited to 'OvmfPkg/OvmfXen.dsc')
| -rw-r--r-- | OvmfPkg/OvmfXen.dsc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/OvmfPkg/OvmfXen.dsc b/OvmfPkg/OvmfXen.dsc index 1b18f1769b..5751ff1f03 100644 --- a/OvmfPkg/OvmfXen.dsc +++ b/OvmfPkg/OvmfXen.dsc @@ -361,6 +361,9 @@ gEfiMdeModulePkgTokenSpaceGuid.PcdConOutGopSupport|TRUE
gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE
+!ifdef $(CSM_ENABLE)
+ gUefiOvmfPkgTokenSpaceGuid.PcdCsmEnable|TRUE
+!endif
[PcdsFixedAtBuild]
gEfiMdeModulePkgTokenSpaceGuid.PcdStatusCodeMemorySize|1
|