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| author | Brijesh Singh <brijesh.singh@amd.com> | 2017-07-06 09:28:58 -0400 |
|---|---|---|
| committer | Jordan Justen <jordan.l.justen@intel.com> | 2017-07-10 21:17:28 -0700 |
| commit | 6264abc29eeabbb2dc756f815ff779d3105518f3 (patch) | |
| tree | b870edff6fc9430dd25f03ec251d8a388fe265a9 /OvmfPkg | |
| parent | b049655d8ac3ac110e243e66ea104b4d21573b3f (diff) | |
| download | edk2-6264abc29eeabbb2dc756f815ff779d3105518f3.tar.gz edk2-6264abc29eeabbb2dc756f815ff779d3105518f3.tar.bz2 edk2-6264abc29eeabbb2dc756f815ff779d3105518f3.zip | |
OvmfPkg/QemuFwCfgLib: Implement SEV internal function for SEC phase
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgSec.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgSec.c b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgSec.c index 465ccbe90d..071b8d9b91 100644 --- a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgSec.c +++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgSec.c @@ -6,6 +6,7 @@ Copyright (C) 2013, Red Hat, Inc.
Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2017, Advanced Micro Devices. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this
@@ -94,3 +95,59 @@ InternalQemuFwCfgDmaIsAvailable ( {
return FALSE;
}
+
+/**
+
+ Returns a boolean indicating whether SEV is enabled
+
+ @retval TRUE SEV is enabled
+ @retval FALSE SEV is disabled
+**/
+BOOLEAN
+InternalQemuFwCfgSevIsEnabled (
+ VOID
+ )
+{
+ //
+ // DMA is not supported in SEC phase hence SEV support is irrelevant
+ //
+ return FALSE;
+}
+
+/**
+ Allocate a bounce buffer for SEV DMA.
+
+ @param[in] NumPage Number of pages.
+ @param[out] Buffer Allocated DMA Buffer pointer
+
+**/
+VOID
+InternalQemuFwCfgSevDmaAllocateBuffer (
+ OUT VOID **Buffer,
+ IN UINT32 NumPages
+ )
+{
+ //
+ // We should never reach here
+ //
+ ASSERT (FALSE);
+}
+
+/**
+ Free the DMA buffer allocated using InternalQemuFwCfgSevDmaAllocateBuffer
+
+ @param[in] NumPage Number of pages.
+ @param[in] Buffer DMA Buffer pointer
+
+**/
+VOID
+InternalQemuFwCfgSevDmaFreeBuffer (
+ IN VOID *Buffer,
+ IN UINT32 NumPages
+ )
+{
+ //
+ // We should never reach here
+ //
+ ASSERT (FALSE);
+}
|