BeagleBoardPkg/Library/EblCmdLib/EblCmdLib.c

   1 /** @file
   2   Add custom commands for BeagleBoard development.
   3
   4   Copyright (c) 2008-2009, Apple Inc. All rights reserved.
   5
   6   All rights reserved. This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include <PiDxe.h>
  17 #include <Library/ArmLib.h>
  18 #include <Library/CacheMaintenanceLib.h>
  19 #include <Library/EblCmdLib.h>
  20 #include <Library/BaseLib.h>
  21 #include <Library/DebugLib.h>
  22 #include <Library/UefiBootServicesTableLib.h>
  23 #include <Library/UefiRuntimeServicesTableLib.h>
  24 #include <Library/MemoryAllocationLib.h>
  25 #include <Library/UefiLib.h>
  26 #include <Library/PcdLib.h>
  27 #include <Library/EfiFileLib.h>
  28 #include <Library/ArmDisassemblerLib.h>
  29
  30 //PcdEmbeddedFdBaseAddress
  31
  32 /**
  33   Fill Me In
  34
  35   Argv[0] - "%CommandName%"
  36
  37   @param  Argc   Number of command arguments in Argv
  38   @param  Argv   Array of strings that represent the parsed command line.
  39                  Argv[0] is the comamnd name
  40
  41   @return EFI_SUCCESS
  42
  43 **/
  44 EFI_STATUS
  45 EblDisassembler (
  46   IN UINTN  Argc,
  47   IN CHAR8  **Argv
  48   )
  49 {
  50   UINT8   *Ptr, *CurrentAddress;
  51   UINT32  Address;
  52   UINT32  Count;
  53   CHAR8   Buffer[80];
  54   UINT32  ItBlock;
  55
  56   if (Argc < 2) {
  57     return EFI_INVALID_PARAMETER;
  58   }
  59
  60   Address = AsciiStrHexToUintn (Argv[1]);
  61   Count   = (Argc > 2) ? (UINT32)AsciiStrHexToUintn (Argv[2]) : 20;
  62
  63   Ptr = (UINT8 *)(UINTN)Address;
  64   ItBlock = 0;
  65   do {
  66     CurrentAddress = Ptr;
  67     DisassembleInstruction (&Ptr, TRUE, TRUE, &ItBlock, Buffer, sizeof (Buffer));
  68     AsciiPrint ("0x%08x: %a\n", CurrentAddress, Buffer);
  69   } while (Count-- > 0);
  70
  71
  72   return EFI_SUCCESS;
  73 }
  74
  75
  76 GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mLibCmdTemplate[] =
  77 {
  78   {
  79     "disasm address [count]",
  80     " disassemble count instructions",
  81     NULL,
  82     EblDisassembler
  83   }
  84 };
  85
  86
  87 VOID
  88 EblInitializeExternalCmd (
  89   VOID
  90   )
  91 {
  92   EblAddCommands (mLibCmdTemplate, sizeof (mLibCmdTemplate)/sizeof (EBL_COMMAND_TABLE));
  93   return;
  94 }