[PATCH 3/5] OvmfPkg/PlatformBootManagerLib: rejuvenate old-style function comments

[Laszlo Ersek <lersek@redhat.com>]

The old-style "Routine Description: ..." comments use the leftmost column
and are placed between the parameter list and the function body. Therefore
they cause git-diff to produce bogus hunk headers that fail to name the
function being patched.

Convert these comment blocks to the current edk2 style. While at it, clean
them up too.

For PlatformBootManagerBeforeConsole() and
PlatformBootManagerAfterConsole(), copy the descriptions from the call
sites in "MdeModulePkg/Universal/BdsDxe/BdsEntry.c". They are more
detailed than the comments in the lib class header
"MdeModulePkg/Include/Library/PlatformBootManagerLib.h"; ArmVirtPkg
already uses these comments.

No functional changes.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
 OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c | 172 ++++++++------------
 1 file changed, 70 insertions(+), 102 deletions(-)

diff --git a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
index 99b7db7cc05a..b155639f3c97 100644
--- a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
+++ b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
@@ -325,31 +325,30 @@ SaveS3BootScript (
   VOID
   );
 
 //
 // BDS Platform Functions
 //
+/**
+  Do the platform init, can be customized by OEM/IBV
+
+  Possible things that can be done in PlatformBootManagerBeforeConsole:
+
+  > Update console variable: 1. include hot-plug devices;
+  >                          2. Clear ConIn and add SOL for AMT
+  > Register new Driver#### or Boot####
+  > Register new Key####: e.g.: F12
+  > Signal ReadyToLock event
+  > Authentication action: 1. connect Auth devices;
+  >                        2. Identify auto logon user.
+**/
 VOID
 EFIAPI
 PlatformBootManagerBeforeConsole (
   VOID
   )
-/*++
-
-Routine Description:
-
-  Platform Bds init. Include the platform firmware vendor, revision
-  and so crc check.
-
-Arguments:
-
-Returns:
-
-  None.
-
---*/
 {
   EFI_HANDLE    Handle;
   EFI_STATUS    Status;
   RETURN_STATUS PcdStatus;
 
   DEBUG ((EFI_D_INFO, "PlatformBootManagerBeforeConsole\n"));
@@ -426,34 +425,27 @@ ConnectRootBridge (
                   FALSE             // Recursive
                   );
   return Status;
 }
 
 
+/**
+  Add IsaKeyboard to ConIn; add IsaSerial to ConOut, ConIn, ErrOut.
+
+  @param[in] DeviceHandle  Handle of the LPC Bridge device.
+
+  @retval EFI_SUCCESS  Console devices on the LPC bridge have been added to
+                       ConOut, ConIn, and ErrOut.
+
+  @return              Error codes, due to EFI_DEVICE_PATH_PROTOCOL missing
+                       from DeviceHandle.
+**/
 EFI_STATUS
 PrepareLpcBridgeDevicePath (
   IN EFI_HANDLE                DeviceHandle
   )
-/*++
-
-Routine Description:
-
-  Add IsaKeyboard to ConIn,
-  add IsaSerial to ConOut, ConIn, ErrOut.
-  LPC Bridge: 06 01 00
-
-Arguments:
-
-  DeviceHandle            - Handle of PCIIO protocol.
-
-Returns:
-
-  EFI_SUCCESS             - LPC bridge is added to ConOut, ConIn, and ErrOut.
-  EFI_STATUS              - No LPC bridge is added.
-
---*/
 {
   EFI_STATUS                Status;
   EFI_DEVICE_PATH_PROTOCOL  *DevicePath;
   EFI_DEVICE_PATH_PROTOCOL  *TempDevicePath;
   CHAR16                    *DevPathStr;
 
@@ -626,33 +618,26 @@ GetGopDevicePath (
     gBS->FreePool (GopHandleBuffer);
   }
 
   return EFI_SUCCESS;
 }
 
+/**
+  Add PCI display to ConOut.
+
+  @param[in] DeviceHandle  Handle of the PCI display device.
+
+  @retval EFI_SUCCESS  The PCI display device has been added to ConOut.
+
+  @return              Error codes, due to EFI_DEVICE_PATH_PROTOCOL missing
+                       from DeviceHandle.
+**/
 EFI_STATUS
 PreparePciDisplayDevicePath (
   IN EFI_HANDLE                DeviceHandle
   )
-/*++
-
-Routine Description:
-
-  Add PCI VGA to ConOut.
-  PCI VGA: 03 00 00
-
-Arguments:
-
-  DeviceHandle            - Handle of PCIIO protocol.
-
-Returns:
-
-  EFI_SUCCESS             - PCI VGA is added to ConOut.
-  EFI_STATUS              - No PCI VGA device is added.
-
---*/
 {
   EFI_STATUS                Status;
   EFI_DEVICE_PATH_PROTOCOL  *DevicePath;
   EFI_DEVICE_PATH_PROTOCOL  *GopDevicePath;
 
   DevicePath    = NULL;
@@ -671,33 +656,27 @@ Returns:
 
   EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
 
   return EFI_SUCCESS;
 }
 
-EFI_STATUS
-PreparePciSerialDevicePath (
-  IN EFI_HANDLE                DeviceHandle
-  )
-/*++
-
-Routine Description:
-
+/**
   Add PCI Serial to ConOut, ConIn, ErrOut.
-  PCI Serial: 07 00 02
 
-Arguments:
+  @param[in] DeviceHandle  Handle of the PCI serial device.
 
-  DeviceHandle            - Handle of PCIIO protocol.
+  @retval EFI_SUCCESS  The PCI serial device has been added to ConOut, ConIn,
+                       ErrOut.
 
-Returns:
-
-  EFI_SUCCESS             - PCI Serial is added to ConOut, ConIn, and ErrOut.
-  EFI_STATUS              - No PCI Serial device is added.
-
---*/
+  @return              Error codes, due to EFI_DEVICE_PATH_PROTOCOL missing
+                       from DeviceHandle.
+**/
+EFI_STATUS
+PreparePciSerialDevicePath (
+  IN EFI_HANDLE                DeviceHandle
+  )
 {
   EFI_STATUS                Status;
   EFI_DEVICE_PATH_PROTOCOL  *DevicePath;
 
   DevicePath = NULL;
   Status = gBS->HandleProtocol (
@@ -915,27 +894,23 @@ DetectAndPreparePlatformPciDevicePaths (
 {
   mDetectVgaOnly = DetectVgaOnly;
   return VisitAllPciInstances (DetectAndPreparePlatformPciDevicePath);
 }
 
 
+/**
+  Connect the predefined platform default console device.
+
+  Always try to find and enable PCI display devices.
+
+  @param[in] PlatformConsole  Predefined platform default console device array.
+**/
 VOID
 PlatformInitializeConsole (
   IN PLATFORM_CONSOLE_CONNECT_ENTRY   *PlatformConsole
   )
-/*++
-
-Routine Description:
-
-  Connect the predefined platform default console device. Always try to find
-  and enable the vga device if have.
-
-Arguments:
-
-  PlatformConsole         - Predefined platform default console device array.
---*/
 {
   UINTN                              Index;
   EFI_DEVICE_PATH_PROTOCOL           *VarConout;
   EFI_DEVICE_PATH_PROTOCOL           *VarConin;
 
   //
@@ -1343,32 +1318,21 @@ PlatformBdsRestoreNvVarsFromHardDisk (
     VisitingFileSystemInstance,
     NULL
     );
 
 }
 
+/**
+  Connect with predefined platform connect sequence.
+
+  The OEM/IBV can customize with their own connect sequence.
+**/
 VOID
 PlatformBdsConnectSequence (
   VOID
   )
-/*++
-
-Routine Description:
-
-  Connect with predefined platform connect sequence,
-  the OEM/IBV can customize with their own connect sequence.
-
-Arguments:
-
-  None.
-
-Returns:
-
-  None.
-
---*/
 {
   UINTN         Index;
   RETURN_STATUS Status;
 
   DEBUG ((EFI_D_INFO, "PlatformBdsConnectSequence\n"));
 
@@ -1428,26 +1392,30 @@ SaveS3BootScript (
                          (UINT32) sizeof Info,
                          (EFI_PHYSICAL_ADDRESS)(UINTN) &Info);
   ASSERT_EFI_ERROR (Status);
 }
 
 
+/**
+  Do the platform specific action after the console is ready
+
+  Possible things that can be done in PlatformBootManagerAfterConsole:
+
+  > Console post action:
+    > Dynamically switch output mode from 100x31 to 80x25 for certain senarino
+    > Signal console ready platform customized event
+  > Run diagnostics like memory testing
+  > Connect certain devices
+  > Dispatch aditional option roms
+  > Special boot: e.g.: USB boot, enter UI
+**/
 VOID
 EFIAPI
 PlatformBootManagerAfterConsole (
   VOID
   )
-/*++
-
-Routine Description:
-
-  The function will execute with as the platform policy, current policy
-  is driven by boot mode. IBV/OEM can customize this code for their specific
-  policy action.
-
---*/
 {
   EFI_BOOT_MODE                      BootMode;
 
   DEBUG ((EFI_D_INFO, "PlatformBootManagerAfterConsole\n"));
 
   if (PcdGetBool (PcdOvmfFlashVariablesEnable)) {
-- 
2.14.1.3.gb7cf6e02401b