Why add a CpuBreakPoint()? > -----Original Message----- > From: Cinnamon Shia [mailto:[email protected]] > Sent: Monday, October 03, 2016 9:14 AM > To: [email protected] > Cc: Carsey, Jaben <[email protected]>; Ni, Ruiyu > <[email protected]>; Cinnamon Shia <[email protected]> > Subject: [PATCH] ShellPkg/Shell: Update CRC32 in the EFI System Table > header > Importance: High > > Update CRC32 in the EFI System Table header after shell changes the > value of gST->ConsoleOutHandle and gST->ConOut > > Contributed-under: TianoCore Contribution Agreement 1.0 > Signed-off-by: Cinnamon Shia <[email protected]> > --- > ShellPkg/Application/Shell/ConsoleLogger.c | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) > > diff --git a/ShellPkg/Application/Shell/ConsoleLogger.c > b/ShellPkg/Application/Shell/ConsoleLogger.c > index 9b64303..07b3f81 100644 > --- a/ShellPkg/Application/Shell/ConsoleLogger.c > +++ b/ShellPkg/Application/Shell/ConsoleLogger.c > @@ -3,6 +3,7 @@ > > (C) Copyright 2013 Hewlett-Packard Development Company, L.P.<BR> > Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR> > + (C) Copyright 2016 Hewlett-Packard Development Company, L.P.<BR> > This program and the accompanying materials > are licensed and made available under the terms and conditions of the BSD > License > which accompanies this distribution. The full text of the license may be > found at > @@ -91,6 +92,16 @@ ConsoleLoggerInstall( > gST->ConsoleOutHandle = gImageHandle; > gST->ConOut = &(*ConsoleInfo)->OurConOut; > > + // > + // Update the CRC32 in the EFI System Table header > + // > + CpuBreakpoint(); > + gST->Hdr.CRC32 = 0; > + gBS->CalculateCrc32 ( > + (UINT8 *)&gST->Hdr, > + gST->Hdr.HeaderSize, > + &gST->Hdr.CRC32 > + ); > return (Status); > } > > @@ -126,6 +137,16 @@ ConsoleLoggerUninstall( > gST->ConsoleOutHandle = ConsoleInfo->OldConHandle; > gST->ConOut = ConsoleInfo->OldConOut; > > + // > + // Update the CRC32 in the EFI System Table header > + // > + gST->Hdr.CRC32 = 0; > + gBS->CalculateCrc32 ( > + (UINT8 *)&gST->Hdr, > + gST->Hdr.HeaderSize, > + &gST->Hdr.CRC32 > + ); > + > return (gBS->UninstallProtocolInterface(gImageHandle, > &gEfiSimpleTextOutProtocolGuid, (VOID*)&ConsoleInfo->OurConOut)); > } > > -- > 2.10.0.windows.1
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