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authorjljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524>2010-10-16 18:51:21 +0000
committerjljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524>2010-10-16 18:51:21 +0000
commitdcb428da9e2c7e566dbaa4ae2b1e171c1d05283b (patch)
tree45397a552af95029151f2c08e2a49b1211cb28c8 /DuetPkg
parent6fc74eaa6393ef107619ee19e2939cde6a8ee205 (diff)
downloadedk2-platforms-dcb428da9e2c7e566dbaa4ae2b1e171c1d05283b.tar.xz
DuetPkg: Move EfiLdr Handoff data to stack
The EfiLdr image may be overwritten later in the boot process. This can lead to the Handoff structure being corrupted before DxeIpl is finished with it. To help prevent this, we move the Handoff structure to the stack, and in DxeIpl make a copy of it. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10950 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'DuetPkg')
-rw-r--r--DuetPkg/DxeIpl/DxeInit.c6
-rw-r--r--DuetPkg/EfiLdr/EfiLoader.c2
2 files changed, 6 insertions, 2 deletions
diff --git a/DuetPkg/DxeIpl/DxeInit.c b/DuetPkg/DxeIpl/DxeInit.c
index df360cbca9..b10e273f0c 100644
--- a/DuetPkg/DxeIpl/DxeInit.c
+++ b/DuetPkg/DxeIpl/DxeInit.c
@@ -138,7 +138,11 @@ Returns:
VOID *MemoryDescriptor;
VOID *NvStorageBase;
CHAR8 PrintBuffer[256];
-
+ EFILDRHANDOFF HandoffCopy;
+
+ CopyMem ((VOID*) &HandoffCopy, (VOID*) Handoff, sizeof (EFILDRHANDOFF));
+ Handoff = &HandoffCopy;
+
ClearScreen();
PrintString("Enter DxeIpl ...\n");
diff --git a/DuetPkg/EfiLdr/EfiLoader.c b/DuetPkg/EfiLdr/EfiLoader.c
index 609e547483..f10db53552 100644
--- a/DuetPkg/EfiLdr/EfiLoader.c
+++ b/DuetPkg/EfiLdr/EfiLoader.c
@@ -50,7 +50,7 @@ EfiLoader (
UINTN BfvBase;
EFI_MAIN_ENTRYPOINT EfiMainEntrypoint;
CHAR8 PrintBuffer[256];
- STATIC EFILDRHANDOFF Handoff;
+ EFILDRHANDOFF Handoff;
ClearScreen();