[PATCH v3 55/78] OvmfPkg/Csm: Fix various typos

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

From: Antoine Coeur <coeur@gmx.fr>

Fix various typos in documentation, comments and strings.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Antoine Coeur <coeur@gmx.fr>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com>
---
 .../LegacyBootMaintUiLib.inf                   |  2 +-
 OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.h     | 10 +++++-----
 .../BiosThunk/VideoDxe/VesaBiosExtensions.h    |  8 ++++----
 OvmfPkg/Csm/Include/Framework/BootScript.h     |  2 +-
 .../FrameworkInternalFormRepresentation.h      |  2 +-
 OvmfPkg/Csm/Include/Protocol/IsaIo.h           |  2 +-
 OvmfPkg/Csm/Include/Protocol/LegacyBios.h      |  6 +++---
 .../Csm/Include/Protocol/LegacyBiosPlatform.h  |  4 ++--
 OvmfPkg/Csm/Include/Protocol/VgaMiniPort.h     |  2 +-
 .../Csm/LegacyBiosDxe/LegacyBiosInterface.h    |  8 ++++----
 .../LegacyBootMaintUiLib/LegacyBootMaintUi.h   |  4 ++--
 .../LegacyBootMaintUiVfr.h                     |  2 +-
 OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.c     |  4 ++--
 OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c     |  6 +++---
 OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c         |  6 +++---
 OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c  |  4 ++--
 OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c          |  8 ++++----
 OvmfPkg/Csm/LegacyBiosDxe/Thunk.c              |  4 ++--
 .../LegacyBootMaintUiLib/LegacyBootMaintUi.c   | 14 +++++++-------
 OvmfPkg/Csm/LegacyBootManagerLib/LegacyBm.c    | 18 +++++++++---------
 .../LegacyBootMaintUiLib.uni                   |  8 ++++----
 21 files changed, 62 insertions(+), 62 deletions(-)

diff --git a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.inf b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.inf
index 5cc64a1b2df2..9a790d34a0e4 100644
--- a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.inf
+++ b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.inf
@@ -1,5 +1,5 @@
 ## @file
-#  Legacy Boot Maintainence UI module is library for BDS phase.
+#  Legacy Boot Maintenance UI module is library for BDS phase.
 #
 #  Copyright (c) 2015 - 2019, Intel Corporation. All rights reserved.<BR>
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
diff --git a/OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.h b/OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.h
index 951f4e6f768f..d4fe15428bf0 100644
--- a/OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.h
+++ b/OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.h
@@ -241,7 +241,7 @@ BiosVideoCheckForVga (
 
 
 /**
-  Release resource for biso video instance.
+  Release resource for BIOS video instance.
 
   @param  BiosVideoPrivate       Video child device private data structure
 
@@ -347,9 +347,9 @@ BiosVideoGraphicsOutputVbeBlt (
 
 
 /**
-  Grahpics Output protocol instance to block transfer for VGA device.
+  Graphics Output protocol instance to block transfer for VGA device.
 
-  @param  This                   Pointer to Grahpics Output protocol instance
+  @param  This                   Pointer to Graphics Output protocol instance
   @param  BltBuffer              The data to transfer to screen
   @param  BltOperation           The operation to perform
   @param  SourceX                The X coordinate of the source for BltOperation
@@ -412,7 +412,7 @@ BiosVideoVgaMiniPortSetMode (
 /**
   Event handler for Exit Boot Service.
 
-  @param  Event       The event that be siganlled when exiting boot service.
+  @param  Event       The event that be signalled when exiting boot service.
   @param  Context     Pointer to instance of BIOS_VIDEO_DEV.
 
 **/
@@ -506,7 +506,7 @@ BiosVideoChildHandleUninstall (
   );
 
 /**
-  Release resource for biso video instance.
+  Release resource for BIOS video instance.
 
   @param  BiosVideoPrivate       Video child device private data structure
 
diff --git a/OvmfPkg/Csm/BiosThunk/VideoDxe/VesaBiosExtensions.h b/OvmfPkg/Csm/BiosThunk/VideoDxe/VesaBiosExtensions.h
index dbf706179ff9..88065f15c645 100644
--- a/OvmfPkg/Csm/BiosThunk/VideoDxe/VesaBiosExtensions.h
+++ b/OvmfPkg/Csm/BiosThunk/VideoDxe/VesaBiosExtensions.h
@@ -250,7 +250,7 @@ typedef struct {
 #define VESA_BIOS_EXTENSIONS_VERSION_3_0  0x0300
 
 //
-// Super VGA Information Block Capabilities field bit defintions
+// Super VGA Information Block Capabilities field bit definitions
 //
 #define VESA_BIOS_EXTENSIONS_CAPABILITY_8_BIT_DAC 0x01  // 0: DAC width is fixed at 6 bits/color
 // 1: DAC width switchable to 8 bits/color
@@ -358,7 +358,7 @@ typedef struct {
 } VESA_BIOS_EXTENSIONS_MODE_INFORMATION_BLOCK;
 
 //
-// Super VGA Mode Information Block ModeAttributes field bit defintions
+// Super VGA Mode Information Block ModeAttributes field bit definitions
 //
 #define VESA_BIOS_EXTENSIONS_MODE_ATTRIBUTE_HARDWARE  0x0001  // 0: Mode not supported in handware
 // 1: Mode supported in handware
@@ -396,7 +396,7 @@ typedef struct {
 #define VESA_BIOS_EXTENSIONS_MODE_ATTRIBUTE_DUAL_DISPLAY  0x1000  // 0: No dual display start address support
 // 1: Dual display start address support
 //
-// Super VGA Mode Information Block WinAAttribite/WinBAttributes field bit defintions
+// Super VGA Mode Information Block WinAAttribite/WinBAttributes field bit definitions
 //
 #define VESA_BIOS_EXTENSIONS_WINX_ATTRIBUTE_RELOCATABLE 0x01  // 0: Single non-relocatable window only
 // 1: Relocatable window(s) are supported
@@ -407,7 +407,7 @@ typedef struct {
 #define VESA_BIOS_EXTENSIONS_WINX_ATTRIBUTE_WRITABLE  0x04  // 0: Window is not writable
 // 1: Window is writable
 //
-// Super VGA Mode Information Block DirectColorMode field bit defintions
+// Super VGA Mode Information Block DirectColorMode field bit definitions
 //
 #define VESA_BIOS_EXTENSIONS_DIRECT_COLOR_MODE_PROG_COLOR_RAMP  0x01  // 0: Color ram is fixed
 // 1: Color ramp is programmable
diff --git a/OvmfPkg/Csm/Include/Framework/BootScript.h b/OvmfPkg/Csm/Include/Framework/BootScript.h
index cb7220c1a7bd..a3518ea837cd 100644
--- a/OvmfPkg/Csm/Include/Framework/BootScript.h
+++ b/OvmfPkg/Csm/Include/Framework/BootScript.h
@@ -1,5 +1,5 @@
 /** @file
-  This file contains the boot script defintions that are shared between the
+  This file contains the boot script definitions that are shared between the
   Boot Script Executor PPI and the Boot Script Save Protocol.
 
 Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
diff --git a/OvmfPkg/Csm/Include/Framework/FrameworkInternalFormRepresentation.h b/OvmfPkg/Csm/Include/Framework/FrameworkInternalFormRepresentation.h
index 04cbae1ef5ae..f10fc5231289 100644
--- a/OvmfPkg/Csm/Include/Framework/FrameworkInternalFormRepresentation.h
+++ b/OvmfPkg/Csm/Include/Framework/FrameworkInternalFormRepresentation.h
@@ -271,7 +271,7 @@ typedef struct {
 
 ///
 /// Inconsistent with specification here:
-/// The following defintion may not comply with Framework Specification HII 0.92. To
+/// The following definition may not comply with Framework Specification HII 0.92. To
 /// keep the inconsistant is for implementation needed.
 ///@{
 typedef struct {
diff --git a/OvmfPkg/Csm/Include/Protocol/IsaIo.h b/OvmfPkg/Csm/Include/Protocol/IsaIo.h
index 30000305fb7d..8807e421feec 100644
--- a/OvmfPkg/Csm/Include/Protocol/IsaIo.h
+++ b/OvmfPkg/Csm/Include/Protocol/IsaIo.h
@@ -145,7 +145,7 @@ typedef struct {
   @param[in] SrcOffset    The offset of the source in ISA MMIO space.
   @param[in] Count        The number tranfers to perform for this copy operation.
 
-  @retval EFI_SUCCESS             The data was copied sucessfully.
+  @retval EFI_SUCCESS             The data was copied successfully.
   @retval EFI_UNSUPPORTED         The DestOffset or SrcOffset is not valid for this device.
   @retval EFI_INVALID_PARAMETER   Width or Count, or both, were invalid.
   @retval EFI_OUT_OF_RESOURCES    The request could not be completed due to a lack of resources.
diff --git a/OvmfPkg/Csm/Include/Protocol/LegacyBios.h b/OvmfPkg/Csm/Include/Protocol/LegacyBios.h
index 36761da39740..cd585a8d58f3 100644
--- a/OvmfPkg/Csm/Include/Protocol/LegacyBios.h
+++ b/OvmfPkg/Csm/Include/Protocol/LegacyBios.h
@@ -1,7 +1,7 @@
 /** @file
   The EFI Legacy BIOS Protocol is used to abstract legacy Option ROM usage
   under EFI and Legacy OS boot.  This file also includes all the related
-  COMPATIBILIY16 structures and defintions.
+  COMPATIBILIY16 structures and definitions.
 
   Note: The names for EFI_IA32_REGISTER_SET elements were picked to follow
   well known naming conventions.
@@ -213,7 +213,7 @@ typedef struct {
   /// value of the start of the PCI Express memory-mapped configuration registers and
   /// must be filled in prior to EfiCompatibility code issuing the Compatibility16 function
   /// Compatibility16InitializeYourself().
-  /// Compatibility16InitializeYourself() is defined in Compatability16
+  /// Compatibility16InitializeYourself() is defined in Compatibility16
   /// Functions.
   ///
   UINT32                            PciExpressBase;
@@ -251,7 +251,7 @@ typedef struct {
 
 ///
 /// Functions provided by the CSM binary which communicate between the EfiCompatibility
-/// and Compatability16 code.
+/// and Compatibility16 code.
 ///
 /// Inconsistent with the specification here:
 /// The member's name started with "Compatibility16" [defined in Intel Framework
diff --git a/OvmfPkg/Csm/Include/Protocol/LegacyBiosPlatform.h b/OvmfPkg/Csm/Include/Protocol/LegacyBiosPlatform.h
index 0a164dad3bde..607ef358f0b0 100644
--- a/OvmfPkg/Csm/Include/Protocol/LegacyBiosPlatform.h
+++ b/OvmfPkg/Csm/Include/Protocol/LegacyBiosPlatform.h
@@ -1,5 +1,5 @@
 /** @file
-  The EFI Legacy BIOS Patform Protocol is used to mate a Legacy16
+  The EFI Legacy BIOS Platform Protocol is used to mate a Legacy16
   implementation with this EFI code. The EFI driver that produces
   the Legacy BIOS protocol is generic and consumes this protocol.
   A driver that matches the Legacy16 produces this protocol
@@ -383,7 +383,7 @@ typedef enum {
   ///
   ///     ShadowAddress First free OpROM area, after other OpROMs have been dispatched..
   ///
-  ///     Compatibility16Table Pointer to the Compatability16 Table.
+  ///     Compatibility16Table Pointer to the Compatibility16 Table.
   ///
   ///       AdditionalData NULL.
   ///
diff --git a/OvmfPkg/Csm/Include/Protocol/VgaMiniPort.h b/OvmfPkg/Csm/Include/Protocol/VgaMiniPort.h
index 41ff58e14cfa..5071c712ff9c 100644
--- a/OvmfPkg/Csm/Include/Protocol/VgaMiniPort.h
+++ b/OvmfPkg/Csm/Include/Protocol/VgaMiniPort.h
@@ -30,7 +30,7 @@ typedef struct _EFI_VGA_MINI_PORT_PROTOCOL  EFI_VGA_MINI_PORT_PROTOCOL;
   ModeNumber of 1 is a request for an 80x50 text mode.  If ModeNumber is greater
   than MaxModeNumber, then EFI_UNSUPPORTED is returned.  If the VGA controller
   is not functioning properly, then EFI_DEVICE_ERROR is returned.  If the VGA
-  controller is sucessfully set to the mode number specified by ModeNumber, then
+  controller is successfully set to the mode number specified by ModeNumber, then
   EFI_SUCCESS is returned.
 
   @param[in] This         A pointer to the EFI_VGA_MINI_PORT_PROTOCOL instance.
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
index a72c8470f6e4..88ec93d428bf 100644
--- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
+++ b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
@@ -501,7 +501,7 @@ typedef struct {
   EFI_GENERIC_MEMORY_TEST_PROTOCOL  *GenericMemoryTest;
 
   //
-  // TRUE if PCI Interupt Line registers have been programmed.
+  // TRUE if PCI Interrupt Line registers have been programmed.
   //
   BOOLEAN                           PciInterruptLine;
 
@@ -706,7 +706,7 @@ LegacyBiosInt86 (
   the Stack argument
 
   @param  This                   Protocol instance pointer.
-  @param  Segment                Segemnt of 16-bit mode call
+  @param  Segment                Segment of 16-bit mode call
   @param  Offset                 Offset of 16-bit mdoe call
   @param  Regs                   Register contexted passed into (and returned) from
                                  thunk to  16-bit mode
@@ -1004,7 +1004,7 @@ InitLegacyIdeController (
 
 /**
   Program the interrupt routing register in all the PCI devices. On a PC AT system
-  this register contains the 8259 IRQ vector that matches it's PCI interrupt.
+  this register contains the 8259 IRQ vector that matches its PCI interrupt.
 
   @param  Private                Legacy  BIOS Instance data
 
@@ -1418,7 +1418,7 @@ RelocateImageUnder4GIfNeeded (
   the Stack argument
 
   @param  This       Protocol instance pointer.
-  @param  Segment    Segemnt of 16-bit mode call
+  @param  Segment    Segment of 16-bit mode call
   @param  Offset     Offset of 16-bit mdoe call
   @param  Regs       Register contexted passed into (and returned) from thunk to
                      16-bit mode
diff --git a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUi.h b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUi.h
index 0c491318c272..87290294df26 100644
--- a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUi.h
+++ b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUi.h
@@ -1,5 +1,5 @@
 /** @file
-  Legacy boot maintainence Ui definition.
+  Legacy boot maintenance Ui definition.
 
 Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -61,7 +61,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 
 //
-// String Contant
+// String Constant
 //
 #define STR_FLOPPY          L"Floppy Drive #%02x"
 #define STR_HARDDISK        L"HardDisk Drive #%02x"
diff --git a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiVfr.h b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiVfr.h
index e16fc3941515..13354865745d 100644
--- a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiVfr.h
+++ b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiVfr.h
@@ -1,5 +1,5 @@
 /** @file
-  Legacy Boot Maintainence UI definition.
+  Legacy Boot Maintenance UI definition.
 
 Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent
diff --git a/OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.c b/OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.c
index 0640656dba14..0a189bc59205 100644
--- a/OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.c
+++ b/OvmfPkg/Csm/BiosThunk/VideoDxe/BiosVideo.c
@@ -381,7 +381,7 @@ BiosVideoDriverBindingStart (
         (FeaturePcdGet (PcdBiosVideoCheckVbeEnable) || FeaturePcdGet (PcdBiosVideoCheckVgaEnable))) {
       //
       // If RemainingDevicePath is the End of Device Path Node,
-      // don't create any child device and return EFI_SUCESS
+      // don't create any child device and return EFI_SUCCESS
       Status = EFI_SUCCESS;
       goto Done;
     }
@@ -3211,7 +3211,7 @@ BiosVideoVgaMiniPortSetMode (
 /**
   Event handler for Exit Boot Service.
 
-  @param  Event       The event that be siganlled when exiting boot service.
+  @param  Event       The event that be signalled when exiting boot service.
   @param  Context     Pointer to instance of BIOS_VIDEO_DEV.
 
 **/
diff --git a/OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c b/OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c
index a07bb82da7f6..9c60c4a4cfc4 100644
--- a/OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c
+++ b/OvmfPkg/Csm/CsmSupportLib/LegacyPlatform.c
@@ -282,7 +282,7 @@ GetSelectedVgaDeviceInfo (
     Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiPciIoProtocolGuid, (VOID**)&PciIo);
     if (!EFI_ERROR (Status)) {
       //
-      // Detemine if this is in the correct bus range.
+      // Determine if this is in the correct bus range.
       //
       Status = PciIo->GetLocation (PciIo, &Segment, &Bus, &Device, &Function);
       if (EFI_ERROR(Status) || (Bus < MinBus || Bus > MaxBus)) {
@@ -501,7 +501,7 @@ GetPlatformHandle (
 
             //
             // Be sure to only fill out correct information based on platform
-            // configureation.
+            // configuration.
             //
             HddInfo[HddIndex].Status        |= HDD_PRIMARY;
             HddInfo[HddIndex].Bus           = (UINT32)Bus;
@@ -882,7 +882,7 @@ TranslatePirq (
         if (PirqData == 0) {
 
           //
-          // No unused interrpts, so start reusing them.
+          // No unused interrupts, so start reusing them.
           //
           MatchData = (UINT8) (~MatchData);
         }
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c
index 5e795bfe6570..dd3608a64ece 100644
--- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c
+++ b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c
@@ -107,7 +107,7 @@ AllocateLegacyMemory (
   64 KB blocks.
 
   Note: inconsistency with the Framework CSM spec. Per the spec, this function may be
-  invoked only once. This limitation is relaxed to allow multiple calls in this implemenation.
+  invoked only once. This limitation is relaxed to allow multiple calls in this implementation.
 
   @param  This                       Protocol instance pointer.
   @param  LegacyMemorySize           Size of required region
@@ -319,7 +319,7 @@ ShadowAndStartLegacy16 (
   Private->LegacyBiosImageSize  = (UINT32) LegacyBiosImageSize;
 
   //
-  // Can only shadow into memory allocated for legacy useage.
+  // Can only shadow into memory allocated for legacy usage.
   //
   ASSERT (Private->BiosStart > Private->OptionRom);
 
@@ -983,7 +983,7 @@ LegacyBiosInstall (
          );
 
   //
-  // Allocate 0 - 4K for real mode interupt vectors and BDA.
+  // Allocate 0 - 4K for real mode interrupt vectors and BDA.
   //
   AllocateLegacyMemory (
     AllocateAddress,
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
index cd4cd24f4246..20784504d501 100644
--- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
+++ b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
@@ -962,7 +962,7 @@ GenericLegacyBoot (
   }
 
   //
-  // We do not ASSERT if SmbiosTable not found. It is possbile that a platform does not produce SmbiosTable.
+  // We do not ASSERT if SmbiosTable not found. It is possible that a platform does not produce SmbiosTable.
   //
   if (mReserveSmbiosEntryPoint == 0) {
     DEBUG ((EFI_D_INFO, "Smbios table is not found!\n"));
@@ -982,7 +982,7 @@ GenericLegacyBoot (
                );
   }
   //
-  // We do not ASSERT if AcpiTable not found. It is possbile that a platform does not produce AcpiTable.
+  // We do not ASSERT if AcpiTable not found. It is possible that a platform does not produce AcpiTable.
   //
   if (AcpiTable == NULL) {
     DEBUG ((EFI_D_INFO, "ACPI table is not found!\n"));
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c
index dc1f760876a6..2656dafde943 100644
--- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c
+++ b/OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c
@@ -678,7 +678,7 @@ TranslateBusPirq (
 
 
 Search busses starting from slot bus for final bus >= Secondary bus and
-final bus <= Suborninate bus. Assumption is bus entries increase in bus
+final bus <= Subordinate bus. Assumption is bus entries increase in bus
 number.
 Starting PIRQ is A,B,C,D.
 Bus 2, Device 7 satisfies search criteria. Rotate (A,B,C,D) left by device
@@ -914,7 +914,7 @@ InstallLegacyIrqHandler (
   Legacy8259      = Private->Legacy8259;
   //
   // Disable interrupt in PIC, in case shared, to prevent an
-  // interrupt from occuring.
+  // interrupt from occurring.
   //
   Legacy8259->GetMask (
                 Legacy8259,
@@ -1049,7 +1049,7 @@ InstallLegacyIrqHandler (
 
 /**
   Program the interrupt routing register in all the PCI devices. On a PC AT system
-  this register contains the 8259 IRQ vector that matches it's PCI interrupt.
+  this register contains the 8259 IRQ vector that matches its PCI interrupt.
 
   @param  Private                Legacy  BIOS Instance data
 
@@ -2582,7 +2582,7 @@ LegacyBiosInstallRom (
   // do not follow the standard of setting AX = 0 on success.
   //
   //
-  // The ROM could have updated it's size so we need to read again.
+  // The ROM could have updated its size so we need to read again.
   //
   if (((EFI_LEGACY_EXPANSION_ROM_HEADER *) RuntimeAddress)->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
     //
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/Thunk.c b/OvmfPkg/Csm/LegacyBiosDxe/Thunk.c
index a4985ede77a5..6432030a23ac 100644
--- a/OvmfPkg/Csm/LegacyBiosDxe/Thunk.c
+++ b/OvmfPkg/Csm/LegacyBiosDxe/Thunk.c
@@ -127,8 +127,8 @@ LegacyBiosFarCall86 (
   Provide NULL interrupt handler which is used to check
   if there is more than one HW interrupt registers with the CPU AP.
 
-  @param  InterruptType - The type of interrupt that occured
-  @param  SystemContext - A pointer to the system context when the interrupt occured
+  @param  InterruptType - The type of interrupt that occurred
+  @param  SystemContext - A pointer to the system context when the interrupt occurred
 
 **/
 VOID
diff --git a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUi.c b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUi.c
index af7d80eb5f04..35470abf914a 100644
--- a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUi.c
+++ b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUi.c
@@ -1,5 +1,5 @@
 /** @file
-  Legacy Boot Maintainence UI implementation.
+  Legacy Boot Maintenance UI implementation.
 
 Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
 (C) Copyright 2018 Hewlett Packard Enterprise Development LP<BR>
@@ -237,10 +237,10 @@ OrderLegacyBootOption4SameType (
 
 /**
   Update the legacy BBS boot option. L"LegacyDevOrder" and gEfiLegacyDevOrderVariableGuid EFI Variable
-  is udpated with the new Legacy Boot order. The EFI Variable of "Boot####" and gEfiGlobalVariableGuid
+  is updated with the new Legacy Boot order. The EFI Variable of "Boot####" and gEfiGlobalVariableGuid
   is also updated.
 
-  @param NVMapData   The data for egacy BBS boot.
+  @param NVMapData   The data for legacy BBS boot.
 
   @return EFI_SUCCESS           The function completed successfully.
   @retval EFI_NOT_FOUND         If L"LegacyDevOrder" and gEfiLegacyDevOrderVariableGuid EFI Variable can not be found.
@@ -725,7 +725,7 @@ CreateLegacyMenuStringToken (
   Create a dynamic page so that Legacy Device boot order
   can be set for specified device type.
 
-  @param UpdatePageId    The form ID. It also spefies the legacy device type.
+  @param UpdatePageId    The form ID. It also specifies the legacy device type.
 
 
 **/
@@ -1127,8 +1127,8 @@ LegacyBootOptionCallback (
     if (QuestionId == FORM_FLOPPY_BOOT_ID) {
       if (!mFirstEnterLegacyForm) {
         //
-        // The leagcyBootMaintUiLib depends on the LegacyBootManagerLib to realize its functionality.
-        // We need to do the leagcy boot options related actions after the LegacyBootManagerLib has been initialized.
+        // The legacyBootMaintUiLib depends on the LegacyBootManagerLib to realize its functionality.
+        // We need to do the legacy boot options related actions after the LegacyBootManagerLib has been initialized.
         // Opening the legacy menus is the appropriate time that the LegacyBootManagerLib has already been initialized.
         //
         mFirstEnterLegacyForm = TRUE;
@@ -1403,7 +1403,7 @@ GetLegacyOptions (
   @param ImageHandle     The image handle.
   @param SystemTable     The system table.
 
-  @retval  EFI_SUCEESS  Install Boot manager menu success.
+  @retval  EFI_SUCCESS  Install Boot manager menu success.
   @retval  Other        Return error status.
 
 **/
diff --git a/OvmfPkg/Csm/LegacyBootManagerLib/LegacyBm.c b/OvmfPkg/Csm/LegacyBootManagerLib/LegacyBm.c
index 6138a32ad78e..6ed45785be72 100644
--- a/OvmfPkg/Csm/LegacyBootManagerLib/LegacyBm.c
+++ b/OvmfPkg/Csm/LegacyBootManagerLib/LegacyBm.c
@@ -173,7 +173,7 @@ LegacyBmBuildLegacyDevNameString (
   StringDesc = (CHAR8 *) (((UINTN) CurBBSEntry->DescStringSegment << 4) + CurBBSEntry->DescStringOffset);
   if (NULL != StringDesc) {
     //
-    // Only get fisrt 32 characters, this is suggested by BBS spec
+    // Only get first 32 characters, this is suggested by BBS spec
     //
     CopyMem (StringBufferA, StringDesc, LEGACY_BM_BOOT_DESCRIPTION_LENGTH);
     StringBufferA[LEGACY_BM_BOOT_DESCRIPTION_LENGTH] = 0;
@@ -378,9 +378,9 @@ LegacyBmDeleteAllBootOptions (
 /**
   Delete all the invalid legacy boot options.
 
-  @retval EFI_SUCCESS             All invalide legacy boot options are deleted.
+  @retval EFI_SUCCESS             All invalid legacy boot options are deleted.
   @retval EFI_OUT_OF_RESOURCES    Fail to allocate necessary memory.
-  @retval EFI_NOT_FOUND           Fail to retrive variable of boot order.
+  @retval EFI_NOT_FOUND           Fail to retrieve variable of boot order.
 **/
 EFI_STATUS
 LegacyBmDeleteAllInvalidBootOptions (
@@ -499,7 +499,7 @@ LegacyBmDeleteAllInvalidBootOptions (
 /**
   Create legacy boot option.
 
-  @param BootOption        Ponter to the boot option which will be crated.
+  @param BootOption        Pointer to the boot option which will be crated.
   @param BbsEntry          The input bbs entry info.
   @param BbsIndex          The BBS index.
 
@@ -615,10 +615,10 @@ LegacyBmFillDevOrderBuf (
   @param BbsTable        The BBS table.
   @param BbsCount        The BBS Count.
 
-  @retval EFI_SUCCES             The buffer is created and the EFI variable named
+  @retval EFI_SUCCESS            The buffer is created and the EFI variable named
                                  VAR_LEGACY_DEV_ORDER and EfiLegacyDevOrderGuid is
                                  set correctly.
-  @retval EFI_OUT_OF_RESOURCES   Memmory or storage is not enough.
+  @retval EFI_OUT_OF_RESOURCES   Memory or storage is not enough.
   @retval EFI_DEVICE_ERROR       Fail to add the device order into EFI variable fail
                                  because of hardware error.
 **/
@@ -742,7 +742,7 @@ LegacyBmCreateDevOrder (
 
   @retval EFI_SUCCESS           The boot devices are added successfully.
   @retval EFI_NOT_FOUND         The legacy boot devices are not found.
-  @retval EFI_OUT_OF_RESOURCES  Memmory or storage is not enough.
+  @retval EFI_OUT_OF_RESOURCES  Memory or storage is not enough.
   @retval EFI_DEVICE_ERROR      Fail to add the legacy device boot order into EFI variable
                                 because of hardware error.
 **/
@@ -1042,7 +1042,7 @@ LegacyBmUpdateDevOrder (
   @param DeviceType      The device type.
   @param BbsIndex        The BBS index to set the highest priority. Ignore when -1.
   @param LocalBbsTable   The BBS table.
-  @param Priority        The prority table.
+  @param Priority        The priority table.
 
   @retval EFI_SUCCESS           The function completes successfully.
   @retval EFI_NOT_FOUND         Failed to find device.
@@ -1494,7 +1494,7 @@ LegacyBmRefreshAllBootOption (
   //
   // Same algorithm pattern as the EfiBootManagerRefreshAllBootOption
   // Firstly delete the invalid legacy boot options,
-  // then enumreate and save the newly appeared legacy boot options
+  // then enumerate and save the newly appeared legacy boot options
   // the last step is legacy boot option special action to refresh the LegacyDevOrder variable
   //
   LegacyBmDeleteAllInvalidBootOptions ();
diff --git a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.uni b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.uni
index c2c100d378b3..f29e1449a749 100644
--- a/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.uni
+++ b/OvmfPkg/Csm/LegacyBootMaintUiLib/LegacyBootMaintUiLib.uni
@@ -1,7 +1,7 @@
 // /** @file
-// Legacy Boot Maintainence UI module is library for BDS phase.
+// Legacy Boot Maintenance UI module is library for BDS phase.
 //
-// Legacy Boot Maintainence UI module is library for BDS phase.
+// Legacy Boot Maintenance UI module is library for BDS phase.
 //
 // Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
 //
@@ -11,10 +11,10 @@
 
 #string STR_MODULE_ABSTRACT
 #language en-US
-"Legacy Boot Maintainence UI module is library for BDS phase."
+"Legacy Boot Maintenance UI module is library for BDS phase."
 
 #string STR_MODULE_DESCRIPTION
 #language en-US
-"Legacy Boot Maintainence UI module is library for BDS phase."
+"Legacy Boot Maintenance UI module is library for BDS phase."
 
 
-- 
2.21.1