Revision: 13542
http://edk2.svn.sourceforge.net/edk2/?rev=13542&view=rev
Author: jljusten
Date: 2012-07-18 22:33:48 +0000 (Wed, 18 Jul 2012)
Log Message:
-----------
OvmfPkg/AcpiPlatformDxe/Xen.c: reuse CalculateSum8
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>
Modified Paths:
--------------
trunk/edk2/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf
trunk/edk2/OvmfPkg/AcpiPlatformDxe/Xen.c
Modified: trunk/edk2/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf
===================================================================
--- trunk/edk2/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf 2012-07-18
22:33:33 UTC (rev 13541)
+++ trunk/edk2/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf 2012-07-18
22:33:48 UTC (rev 13542)
@@ -47,6 +47,7 @@
HobLib
QemuFwCfgLib
MemoryAllocationLib
+ BaseLib
[Protocols]
gEfiAcpiTableProtocolGuid # PROTOCOL ALWAYS_CONSUMED
Modified: trunk/edk2/OvmfPkg/AcpiPlatformDxe/Xen.c
===================================================================
--- trunk/edk2/OvmfPkg/AcpiPlatformDxe/Xen.c 2012-07-18 22:33:33 UTC (rev
13541)
+++ trunk/edk2/OvmfPkg/AcpiPlatformDxe/Xen.c 2012-07-18 22:33:48 UTC (rev
13542)
@@ -17,6 +17,7 @@
#include "AcpiPlatform.h"
#include <Library/HobLib.h>
#include <Guid/XenInfo.h>
+#include <Library/BaseLib.h>
#define XEN_ACPI_PHYSICAL_ADDRESS 0x000EA020
#define XEN_BIOS_PHYSICAL_END 0x000FFFFF
@@ -24,38 +25,6 @@
EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *XenAcpiRsdpStructurePtr = NULL;
/**
- Calculates the checksum of the ACPI tables.
-
- @param Buffer Address of the ACPI table.
- @param Size Size of the ACPI table need to check.
-
-**/
-UINT8
-CalculateTableChecksum (
- IN VOID *Buffer,
- IN UINTN Size
- )
-{
- UINT8 Sum;
- UINT8 *Ptr;
-
- Sum = 0;
- //
- // Initialize pointer
- //
- Ptr = Buffer;
-
- //
- // Add all content of buffer
- //
- while ((Size--) != 0) {
- Sum = (UINT8) (Sum + (*Ptr++));
- }
-
- return Sum;
-}
-
-/**
This function detects if OVMF is running on Xen.
**/
@@ -113,8 +82,8 @@
// RSDP ACPI 1.0 checksum for 1.0/2.0/3.0 table.
// This is only the first 20 bytes of the structure
//
- Sum = CalculateTableChecksum (
- RsdpStructurePtr,
+ Sum = CalculateSum8 (
+ (CONST UINT8 *)RsdpStructurePtr,
sizeof (EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_POINTER)
);
if (Sum != 0) {
@@ -125,8 +94,8 @@
//
// RSDP ACPI 2.0/3.0 checksum, this is the entire table
//
- Sum = CalculateTableChecksum (
- RsdpStructurePtr,
+ Sum = CalculateSum8 (
+ (CONST UINT8 *)RsdpStructurePtr,
sizeof (EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER)
);
if (Sum != 0) {
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