MdeModulePkg/HiiDatabaseDxe: Fix a variable is uninitialized.

[mirror_edk2.git] / EmbeddedPkg / Application / AndroidFastboot / AndroidFastbootApp.c

/** @file\r
\r
  Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>\r
\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include "AndroidFastbootApp.h"\r
\r
#include <Protocol/AndroidFastbootTransport.h>\r
#include <Protocol/AndroidFastbootPlatform.h>\r
#include <Protocol/SimpleTextOut.h>\r
#include <Protocol/SimpleTextIn.h>\r
\r
#include <Library/PcdLib.h>\r
#include <Library/UefiRuntimeServicesTableLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/UefiApplicationEntryPoint.h>\r
#include <Library/PrintLib.h>\r
\r
/*\r
 * UEFI Application using the FASTBOOT_TRANSPORT_PROTOCOL and\r
 * FASTBOOT_PLATFORM_PROTOCOL to implement the Android Fastboot protocol.\r
 */\r
\r
STATIC FASTBOOT_TRANSPORT_PROTOCOL *mTransport;\r
STATIC FASTBOOT_PLATFORM_PROTOCOL  *mPlatform;\r
\r
STATIC EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *mTextOut;\r
\r
typedef enum {\r
  ExpectCmdState,\r
  ExpectDataState,\r
  FastbootStateMax\r
} ANDROID_FASTBOOT_STATE;\r
\r
STATIC ANDROID_FASTBOOT_STATE mState = ExpectCmdState;\r
\r
// When in ExpectDataState, the number of bytes of data to expect:\r
STATIC UINT32 mNumDataBytes;\r
// .. and the number of bytes so far received this data phase\r
STATIC UINT32 mBytesReceivedSoFar;\r
// .. and the buffer to save data into\r
STATIC UINT8 *mDataBuffer = NULL;\r
\r
// Event notify functions, from which gBS->Exit shouldn't be called, can signal\r
// this event when the application should exit\r
STATIC EFI_EVENT mFinishedEvent;\r
\r
STATIC EFI_EVENT mFatalSendErrorEvent;\r
\r
// This macro uses sizeof - only use it on arrays (i.e. string literals)\r
#define SEND_LITERAL(Str) mTransport->Send (                  \\r
                                        sizeof (Str) - 1,     \\r
                                        Str,                  \\r
                                        &mFatalSendErrorEvent \\r
                                        )\r
#define MATCH_CMD_LITERAL(Cmd, Buf) !AsciiStrnCmp (Cmd, Buf, sizeof (Cmd) - 1)\r
\r
#define IS_LOWERCASE_ASCII(Char) (Char >= 'a' && Char <= 'z')\r
\r
#define FASTBOOT_STRING_MAX_LENGTH  256\r
#define FASTBOOT_COMMAND_MAX_LENGTH 64\r
\r
STATIC\r
VOID\r
HandleGetVar (\r
  IN CHAR8 *CmdArg\r
  )\r
{\r
  CHAR8      Response[FASTBOOT_COMMAND_MAX_LENGTH + 1] = "OKAY";\r
  EFI_STATUS Status;\r
\r
  // Respond to getvar:version with 0.4 (version of Fastboot protocol)\r
  if (!AsciiStrnCmp ("version", CmdArg, sizeof ("version") - 1 )) {\r
    SEND_LITERAL ("OKAY" ANDROID_FASTBOOT_VERSION);\r
  } else {\r
    // All other variables are assumed to be platform specific\r
    Status = mPlatform->GetVar (CmdArg, Response + 4);\r
    if (EFI_ERROR (Status)) {\r
      SEND_LITERAL ("FAILSomething went wrong when looking up the variable");\r
    } else {\r
      mTransport->Send (AsciiStrLen (Response), Response, &mFatalSendErrorEvent);\r
    }\r
  }\r
}\r
\r
STATIC\r
VOID\r
HandleDownload (\r
  IN CHAR8 *NumBytesString\r
  )\r
{\r
  CHAR8       Response[12] = "DATA";\r
  CHAR16      OutputString[FASTBOOT_STRING_MAX_LENGTH];\r
\r
  // Argument is 8-character ASCII string hex representation of number of bytes\r
  // that will be sent in the data phase.\r
  // Response is "DATA" + that same 8-character string.\r
\r
  // Replace any previously downloaded data\r
  if (mDataBuffer != NULL) {\r
    FreePool (mDataBuffer);\r
    mDataBuffer = NULL;\r
  }\r
\r
  // Parse out number of data bytes to expect\r
  mNumDataBytes = AsciiStrHexToUint64 (NumBytesString);\r
  if (mNumDataBytes == 0) {\r
    mTextOut->OutputString (mTextOut, L"ERROR: Fail to get the number of bytes to download.\r\n");\r
    SEND_LITERAL ("FAILFailed to get the number of bytes to download");\r
    return;\r
  }\r
\r
  UnicodeSPrint (OutputString, sizeof (OutputString), L"Downloading %d bytes\r\n", mNumDataBytes);\r
  mTextOut->OutputString (mTextOut, OutputString);\r
\r
  mDataBuffer = AllocatePool (mNumDataBytes);\r
  if (mDataBuffer == NULL) {\r
    SEND_LITERAL ("FAILNot enough memory");\r
  } else {\r
    AsciiStrnCpy (Response + 4, NumBytesString, 8);\r
    mTransport->Send (sizeof(Response), Response, &mFatalSendErrorEvent);\r
\r
    mState = ExpectDataState;\r
    mBytesReceivedSoFar = 0;\r
  }\r
}\r
\r
STATIC\r
VOID\r
HandleFlash (\r
  IN CHAR8 *PartitionName\r
  )\r
{\r
  EFI_STATUS  Status;\r
  CHAR16      OutputString[FASTBOOT_STRING_MAX_LENGTH];\r
\r
  // Build output string\r
  UnicodeSPrint (OutputString, sizeof (OutputString), L"Flashing partition %a\r\n", PartitionName);\r
  mTextOut->OutputString (mTextOut, OutputString);\r
\r
  if (mDataBuffer == NULL) {\r
    // Doesn't look like we were sent any data\r
    SEND_LITERAL ("FAILNo data to flash");\r
    return;\r
  }\r
\r
  Status = mPlatform->FlashPartition (\r
                        PartitionName,\r
                        mNumDataBytes,\r
                        mDataBuffer\r
                        );\r
  if (Status == EFI_NOT_FOUND) {\r
    SEND_LITERAL ("FAILNo such partition.");\r
    mTextOut->OutputString (mTextOut, L"No such partition.\r\n");\r
  } else if (EFI_ERROR (Status)) {\r
    SEND_LITERAL ("FAILError flashing partition.");\r
    mTextOut->OutputString (mTextOut, L"Error flashing partition.\r\n");\r
    DEBUG ((EFI_D_ERROR, "Couldn't flash image:  %r\n", Status));\r
  } else {\r
    mTextOut->OutputString (mTextOut, L"Done.\r\n");\r
    SEND_LITERAL ("OKAY");\r
  }\r
}\r
\r
STATIC\r
VOID\r
HandleErase (\r
  IN CHAR8 *PartitionName\r
  )\r
{\r
  EFI_STATUS  Status;\r
  CHAR16      OutputString[FASTBOOT_STRING_MAX_LENGTH];\r
\r
  // Build output string\r
  UnicodeSPrint (OutputString, sizeof (OutputString), L"Erasing partition %a\r\n", PartitionName);\r
  mTextOut->OutputString (mTextOut, OutputString);\r
\r
  Status = mPlatform->ErasePartition (PartitionName);\r
  if (EFI_ERROR (Status)) {\r
    SEND_LITERAL ("FAILCheck device console.");\r
    DEBUG ((EFI_D_ERROR, "Couldn't erase image:  %r\n", Status));\r
  } else {\r
    SEND_LITERAL ("OKAY");\r
  }\r
}\r
\r
STATIC\r
VOID\r
HandleBoot (\r
  VOID\r
  )\r
{\r
  EFI_STATUS Status;\r
\r
  mTextOut->OutputString (mTextOut, L"Booting downloaded image\r\n");\r
\r
  if (mDataBuffer == NULL) {\r
    // Doesn't look like we were sent any data\r
    SEND_LITERAL ("FAILNo image in memory");\r
    return;\r
  }\r
\r
  // We don't really have any choice but to report success, because once we\r
  // boot we lose control of the system.\r
  SEND_LITERAL ("OKAY");\r
\r
  Status = BootAndroidBootImg (mNumDataBytes, mDataBuffer);\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "Failed to boot downloaded image: %r\n", Status));\r
  }\r
  // We shouldn't get here\r
}\r
\r
STATIC\r
VOID\r
HandleOemCommand (\r
  IN CHAR8 *Command\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  Status = mPlatform->DoOemCommand (Command);\r
  if (Status == EFI_NOT_FOUND) {\r
    SEND_LITERAL ("FAILOEM Command not recognised.");\r
  } else if (Status == EFI_DEVICE_ERROR) {\r
    SEND_LITERAL ("FAILError while executing command");\r
  } else if (EFI_ERROR (Status)) {\r
    SEND_LITERAL ("FAIL");\r
  } else {\r
    SEND_LITERAL ("OKAY");\r
  }\r
}\r
\r
STATIC\r
VOID\r
AcceptCmd (\r
  IN        UINTN  Size,\r
  IN  CONST CHAR8 *Data\r
  )\r
{\r
  CHAR8       Command[FASTBOOT_COMMAND_MAX_LENGTH + 1];\r
\r
  // Max command size is 64 bytes\r
  if (Size > FASTBOOT_COMMAND_MAX_LENGTH) {\r
    SEND_LITERAL ("FAILCommand too large");\r
    return;\r
  }\r
\r
  // Commands aren't null-terminated. Let's get a null-terminated version.\r
  AsciiStrnCpy (Command, Data, Size);\r
  Command[Size] = '\0';\r
\r
  // Parse command\r
  if (MATCH_CMD_LITERAL ("getvar", Command)) {\r
    HandleGetVar (Command + sizeof ("getvar"));\r
  } else if (MATCH_CMD_LITERAL ("download", Command)) {\r
    HandleDownload (Command + sizeof ("download"));\r
  } else if (MATCH_CMD_LITERAL ("verify", Command)) {\r
    SEND_LITERAL ("FAILNot supported");\r
  } else if (MATCH_CMD_LITERAL ("flash", Command)) {\r
    HandleFlash (Command + sizeof ("flash"));\r
  } else if (MATCH_CMD_LITERAL ("erase", Command)) {\r
    HandleErase (Command + sizeof ("erase"));\r
  } else if (MATCH_CMD_LITERAL ("boot", Command)) {\r
    HandleBoot ();\r
  } else if (MATCH_CMD_LITERAL ("continue", Command)) {\r
    SEND_LITERAL ("OKAY");\r
    mTextOut->OutputString (mTextOut, L"Received 'continue' command. Exiting Fastboot mode\r\n");\r
\r
    gBS->SignalEvent (mFinishedEvent);\r
  } else if (MATCH_CMD_LITERAL ("reboot", Command)) {\r
    if (MATCH_CMD_LITERAL ("reboot-booloader", Command)) {\r
      // fastboot_protocol.txt:\r
      //    "reboot-bootloader    Reboot back into the bootloader."\r
      // I guess this means reboot back into fastboot mode to save the user\r
      // having to do whatever they did to get here again.\r
      // Here we just reboot normally.\r
      SEND_LITERAL ("INFOreboot-bootloader not supported, rebooting normally.");\r
    }\r
    SEND_LITERAL ("OKAY");\r
    gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);\r
\r
    // Shouldn't get here\r
    DEBUG ((EFI_D_ERROR, "Fastboot: gRT->ResetSystem didn't work\n"));\r
  } else if (MATCH_CMD_LITERAL ("powerdown", Command)) {\r
    SEND_LITERAL ("OKAY");\r
    gRT->ResetSystem (EfiResetShutdown, EFI_SUCCESS, 0, NULL);\r
\r
    // Shouldn't get here\r
    DEBUG ((EFI_D_ERROR, "Fastboot: gRT->ResetSystem didn't work\n"));\r
  } else if (MATCH_CMD_LITERAL ("oem", Command)) {\r
    // The "oem" command isn't in the specification, but it was observed in the\r
    // wild, followed by a space, followed by the actual command.\r
    HandleOemCommand (Command + sizeof ("oem"));\r
  } else if (IS_LOWERCASE_ASCII (Command[0])) {\r
    // Commands starting with lowercase ASCII characters are reserved for the\r
    // Fastboot protocol. If we don't recognise it, it's probably the future\r
    // and there are new commmands in the protocol.\r
    // (By the way, the "oem" command mentioned above makes this reservation\r
    //  redundant, but we handle it here to be spec-compliant)\r
    SEND_LITERAL ("FAILCommand not recognised. Check Fastboot version.");\r
  } else {\r
    HandleOemCommand (Command);\r
  }\r
}\r
\r
STATIC\r
VOID\r
AcceptData (\r
  IN  UINTN  Size,\r
  IN  VOID  *Data\r
  )\r
{\r
  UINT32 RemainingBytes = mNumDataBytes - mBytesReceivedSoFar;\r
  CHAR16 OutputString[FASTBOOT_STRING_MAX_LENGTH];\r
  STATIC UINTN Count = 0;\r
\r
  // Protocol doesn't say anything about sending extra data so just ignore it.\r
  if (Size > RemainingBytes) {\r
    Size = RemainingBytes;\r
  }\r
\r
  CopyMem (&mDataBuffer[mBytesReceivedSoFar], Data, Size);\r
\r
  mBytesReceivedSoFar += Size;\r
\r
  // Show download progress. Don't do it for every packet  as outputting text\r
  // might be time consuming - do it on the last packet and on every 32nd packet\r
  if ((Count++ % 32) == 0 || Size == RemainingBytes) {\r
    // (Note no newline in format string - it will overwrite the line each time)\r
    UnicodeSPrint (\r
      OutputString,\r
      sizeof (OutputString),\r
      L"\r%8d / %8d bytes downloaded (%d%%)",\r
      mBytesReceivedSoFar,\r
      mNumDataBytes,\r
      (mBytesReceivedSoFar * 100) / mNumDataBytes // percentage\r
      );\r
    mTextOut->OutputString (mTextOut, OutputString);\r
  }\r
\r
  if (mBytesReceivedSoFar == mNumDataBytes) {\r
    // Download finished.\r
\r
    mTextOut->OutputString (mTextOut, L"\r\n");\r
    SEND_LITERAL ("OKAY");\r
    mState = ExpectCmdState;\r
  }\r
}\r
\r
/*\r
  This is the NotifyFunction passed to CreateEvent in the FastbootAppEntryPoint\r
  It will be called by the UEFI event framework when the transport protocol\r
  implementation signals that data has been received from the Fastboot host.\r
  The parameters are ignored.\r
*/\r
STATIC\r
VOID\r
DataReady (\r
  IN EFI_EVENT  Event,\r
  IN VOID      *Context\r
  )\r
{\r
  UINTN       Size;\r
  VOID       *Data;\r
  EFI_STATUS  Status;\r
\r
  do {\r
    Status = mTransport->Receive (&Size, &Data);\r
    if (!EFI_ERROR (Status)) {\r
      if (mState == ExpectCmdState) {\r
        AcceptCmd (Size, (CHAR8 *) Data);\r
      } else if (mState == ExpectDataState) {\r
        AcceptData (Size, Data);\r
      } else {\r
        ASSERT (FALSE);\r
      }\r
      FreePool (Data);\r
    }\r
  } while (!EFI_ERROR (Status));\r
\r
  // Quit if there was a fatal error\r
  if (Status != EFI_NOT_READY) {\r
    ASSERT (Status == EFI_DEVICE_ERROR);\r
    // (Put a newline at the beginning as we are probably in the data phase,\r
    //  so the download progress line, with no '\n' is probably on the console)\r
    mTextOut->OutputString (mTextOut, L"\r\nFatal error receiving data. Exiting.\r\n");\r
    gBS->SignalEvent (mFinishedEvent);\r
  }\r
}\r
\r
/*\r
  Event notify for a fatal error in transmission.\r
*/\r
STATIC\r
VOID\r
FatalErrorNotify (\r
  IN EFI_EVENT  Event,\r
  IN VOID      *Context\r
  )\r
{\r
  mTextOut->OutputString (mTextOut, L"Fatal error sending command response. Exiting.\r\n");\r
  gBS->SignalEvent (mFinishedEvent);\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
FastbootAppEntryPoint (\r
  IN EFI_HANDLE                            ImageHandle,\r
  IN EFI_SYSTEM_TABLE                      *SystemTable\r
  )\r
{\r
  EFI_STATUS                      Status;\r
  EFI_EVENT                       ReceiveEvent;\r
  EFI_EVENT                       WaitEventArray[2];\r
  UINTN                           EventIndex;\r
  EFI_SIMPLE_TEXT_INPUT_PROTOCOL *TextIn;\r
\r
  mDataBuffer = NULL;\r
\r
  Status = gBS->LocateProtocol (\r
    &gAndroidFastbootTransportProtocolGuid,\r
    NULL,\r
    (VOID **) &mTransport\r
    );\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "Fastboot: Couldn't open Fastboot Transport Protocol: %r\n", Status));\r
    return Status;\r
  }\r
\r
  Status = gBS->LocateProtocol (&gAndroidFastbootPlatformProtocolGuid, NULL, (VOID **) &mPlatform);\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "Fastboot: Couldn't open Fastboot Platform Protocol: %r\n", Status));\r
    return Status;\r
  }\r
\r
  Status = mPlatform->Init ();\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "Fastboot: Couldn't initialise Fastboot Platform Protocol: %r\n", Status));\r
    return Status;\r
  }\r
\r
  Status = gBS->LocateProtocol (&gEfiSimpleTextOutProtocolGuid, NULL, (VOID **) &mTextOut);\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR,\r
      "Fastboot: Couldn't open Text Output Protocol: %r\n", Status\r
      ));\r
    return Status;\r
  }\r
\r
  Status = gBS->LocateProtocol (&gEfiSimpleTextInProtocolGuid, NULL, (VOID **) &TextIn);\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "Fastboot: Couldn't open Text Input Protocol: %r\n", Status));\r
    return Status;\r
  }\r
\r
  // Disable watchdog\r
  Status = gBS->SetWatchdogTimer (0, 0x10000, 0, NULL);\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "Fastboot: Couldn't disable watchdog timer: %r\n", Status));\r
  }\r
\r
  // Create event for receipt of data from the host\r
  Status = gBS->CreateEvent (\r
                  EVT_NOTIFY_SIGNAL,\r
                  TPL_CALLBACK,\r
                  DataReady,\r
                  NULL,\r
                  &ReceiveEvent\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  // Create event for exiting application when "continue" command is received\r
  Status = gBS->CreateEvent (0, TPL_CALLBACK, NULL, NULL, &mFinishedEvent);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  // Create event to pass to FASTBOOT_TRANSPORT_PROTOCOL.Send, signalling a\r
  // fatal error\r
  Status = gBS->CreateEvent (\r
                 EVT_NOTIFY_SIGNAL,\r
                 TPL_CALLBACK,\r
                 FatalErrorNotify,\r
                 NULL,\r
                 &mFatalSendErrorEvent\r
                 );\r
  ASSERT_EFI_ERROR (Status);\r
\r
\r
  // Start listening for data\r
  Status = mTransport->Start (\r
    ReceiveEvent\r
    );\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "Fastboot: Couldn't start transport: %r\n", Status));\r
    return Status;\r
  }\r
\r
  // Talk to the user\r
  mTextOut->OutputString (mTextOut,\r
      L"Android Fastboot mode - version " ANDROID_FASTBOOT_VERSION ". Press any key to quit.\r\n");\r
\r
  // Quit when the user presses any key, or mFinishedEvent is signalled\r
  WaitEventArray[0] = mFinishedEvent;\r
  WaitEventArray[1] = TextIn->WaitForKey;\r
  gBS->WaitForEvent (2, WaitEventArray, &EventIndex);\r
\r
  mTransport->Stop ();\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "Warning: Fastboot Transport Stop: %r\n", Status));\r
  }\r
  mPlatform->UnInit ();\r
\r
  return EFI_SUCCESS;\r
}\r