Hi,
Thanks for identifying this bug which caused wrong CMOS value filled. I
agree with your fix.
Reviewed-by: Elvin Li <elvin...@intel.com>
By the way, I am just curious, how do you find this bug? Do you meet
real function failure?
Thanks
Elvin
-----Original Message-----
From: Mike Maslenkin [mailto:miha...@parallels.com]
Sent: Tuesday, March 04, 2014 7:24 AM
To: edk2-devel@lists.sourceforge.net
Cc: Mike Maslenkin
Subject: [edk2] [PATCH 1/1] Fix amount of memory value stored at CMOS
The size of platform memory above 1M is measured in kilobytes.
This patch fixes truncation of this value. Actually 0 Mb memory size was set by
reason of overflow of 16 bit word caused by wrong value used.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Mike Maslenkin <miha...@parallels.com>
---
IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
index bf2760550442..3493c518dfd2 100644
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
@@ -2101,7 +2101,7 @@ LegacyBiosCompleteStandardCmosBeforeBoot (
//
// redo memory size since it can change
//
- Size = 15 * SIZE_1MB;
+ Size = (15 * SIZE_1MB) >> 10;
if (Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb < (15 *
SIZE_1MB)) {
Size = Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb >> 10;
}
--
1.7.10.4
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