diff options
| author | Laszlo Ersek <lersek@redhat.com> | 2016-03-04 17:23:35 +0100 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2016-03-23 17:46:56 +0100 |
| commit | d5371680638151ff1a4332294e60a1c12163752e (patch) | |
| tree | 3387377b6449d2355df3d81e1be760b70783d595 /OvmfPkg | |
| parent | 8f35eb92c419f8a02dcaaac41073d88739a86562 (diff) | |
| download | edk2-platforms-d5371680638151ff1a4332294e60a1c12163752e.tar.xz | |
OvmfPkg: PlatformPei: factor out GetFirstNonAddress()
Factor out the expression that is currently the basis of the address width
calculation into a standalone function. In the next patches we'll raise
the return value under certain circumstances.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Marcel Apfelbaum <marcel@redhat.com>
Cc: Thomas Lamprecht <t.lamprecht@proxmox.com>
Ref: https://github.com/tianocore/edk2/issues/59
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/PlatformPei/MemDetect.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/OvmfPkg/PlatformPei/MemDetect.c b/OvmfPkg/PlatformPei/MemDetect.c index 455fcbb49d..286f6914a7 100644 --- a/OvmfPkg/PlatformPei/MemDetect.c +++ b/OvmfPkg/PlatformPei/MemDetect.c @@ -88,6 +88,22 @@ GetSystemMemorySizeAbove4gb ( /**
+ Return the highest address that DXE could possibly use, plus one.
+**/
+STATIC
+UINT64
+GetFirstNonAddress (
+ VOID
+ )
+{
+ UINT64 FirstNonAddress;
+
+ FirstNonAddress = BASE_4GB + GetSystemMemorySizeAbove4gb ();
+ return FirstNonAddress;
+}
+
+
+/**
Initialize the mPhysMemAddressWidth variable, based on guest RAM size.
**/
VOID
@@ -103,7 +119,7 @@ AddressWidthInitialization ( // The DXL IPL keys off of the physical address bits advertized in the CPU
// HOB. To conserve memory, we calculate the minimum address width here.
//
- FirstNonAddress = BASE_4GB + GetSystemMemorySizeAbove4gb ();
+ FirstNonAddress = GetFirstNonAddress ();
mPhysMemAddressWidth = (UINT8)HighBitSet64 (FirstNonAddress);
//
|