X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=ShellPkg%2FLibrary%2FUefiShellAcpiViewCommandLib%2FParsers%2FGtdt%2FGtdtParser.c;h=1b7e56486c8fb98a8fe063ae5fa25d86500a58a9;hp=f31c4a2761751c58d4b1d3eb75084e24ec318e7f;hb=8da8daafc9055ce83804fcc65d0f4cf01b2ca6fe;hpb=fb5573b83007bb2f2b4b5b1cacbf4e1a5714b9fd

diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
index f31c4a2761..1b7e56486c 100644
--- a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
+++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
@@ -1,7 +1,7 @@
 /** @file
   GTDT table parser
 
-  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
+  Copyright (c) 2016 - 2019, ARM Limited. All rights reserved.
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
   @par Reference(s):
@@ -38,6 +38,21 @@ ValidateGtBlockTimerCount (
   IN VOID*  Context
   );
 
+/**
+  This function validates the GT Frame Number.
+
+  @param [in] Ptr     Pointer to the start of the field data.
+  @param [in] Context Pointer to context specific information e.g. this
+                      could be a pointer to the ACPI table header.
+**/
+STATIC
+VOID
+EFIAPI
+ValidateGtFrameNumber (
+  IN UINT8* Ptr,
+  IN VOID*  Context
+  );
+
 /**
   An ACPI_PARSER array describing the ACPI GTDT Table.
 **/
@@ -92,7 +107,7 @@ STATIC CONST ACPI_PARSER GtBlockParser[] = {
   An ACPI_PARSER array describing the GT Block timer.
 **/
 STATIC CONST ACPI_PARSER GtBlockTimerParser[] = {
-  {L"Frame Number", 1, 0, L"%d", NULL, NULL, NULL, NULL},
+  {L"Frame Number", 1, 0, L"%d", NULL, NULL, ValidateGtFrameNumber, NULL},
   {L"Reserved", 3, 1, L"%x %x %x", Dump3Chars, NULL, NULL, NULL},
   {L"Physical address (CntBaseX)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},
   {L"Physical address (CntEL0BaseX)", 8, 12, L"0x%lx", NULL, NULL, NULL,
@@ -145,6 +160,34 @@ ValidateGtBlockTimerCount (
   }
 }
 
+/**
+  This function validates the GT Frame Number.
+
+  @param [in] Ptr     Pointer to the start of the field data.
+  @param [in] Context Pointer to context specific information e.g. this
+                      could be a pointer to the ACPI table header.
+**/
+STATIC
+VOID
+EFIAPI
+ValidateGtFrameNumber (
+  IN UINT8* Ptr,
+  IN VOID*  Context
+  )
+{
+  UINT8 FrameNumber;
+
+  FrameNumber = *(UINT8*)Ptr;
+
+  if (FrameNumber > 7) {
+    IncrementErrorCount ();
+    Print (
+      L"\nERROR: GT Frame Number = %d. GT Frame Number must be in range 0-7.",
+      FrameNumber
+      );
+  }
+}
+
 /**
   This function parses the Platform GT Block.