119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
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/*++
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Copyright (c) 1999 Intel Corporation
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Module Name:
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dblk.c
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Abstract:
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Dump Data from block IO devices
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Revision History
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--*/
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#include "shelle.h"
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EFI_STATUS
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DumpBlockDev (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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);
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EFI_DRIVER_ENTRY_POINT(DumpBlockDev)
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EFI_STATUS
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DumpBlockDev (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*
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dblk BlockDeviceName [LBA] [# Blocks]
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if no Address default address is LBA 0
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if no # Blocks then # Blocks is 1
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*/
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{
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UINT64 BlockAddress;
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UINT32 NumBlocks;
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UINTN ByteSize;
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EFI_DEVICE_PATH *DevicePath;
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EFI_STATUS Status;
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EFI_BLOCK_IO *BlkIo;
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VOID *Buffer;
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/*
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* Check to see if the app is to install as a "internal command"
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* to the shell
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*/
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InstallInternalShellCommand (
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ImageHandle, SystemTable, DumpBlockDev,
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L"dblk", /* command */
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L"dblk device [Lba] [Blocks]", /* command syntax */
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L"Hex dump of BlkIo Devices", /* 1 line descriptor */
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NULL /* command help page */
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);
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InitializeShellApplication (ImageHandle, SystemTable);
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if ( SI->Argc < 2 ) {
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Print (L"Usage - %Hdblk%N BlockDeviceName [LBA] [# Blocks]\n");
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return EFI_SUCCESS;
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}
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if (SI->Argc >= 3) {
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BlockAddress = xtoi(SI->Argv[2]);
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} else {
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BlockAddress = 0;
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}
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if (SI->Argc >= 4) {
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NumBlocks = (UINT32) xtoi(SI->Argv[3]);
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} else {
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NumBlocks = 1;
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}
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/*
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* Check for the device mapping
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*/
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DevicePath = (EFI_DEVICE_PATH *)ShellGetMap (SI->Argv[1]);
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if (DevicePath == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Status = LibDevicePathToInterface (&BlockIoProtocol, DevicePath, (VOID **)&BlkIo);
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if (EFI_ERROR(Status)) {
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Print (L"%E - Device Not a BlockIo Device %r%N", Status);
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return Status;
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}
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if (NumBlocks > 0x10) {
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NumBlocks = 0x10;
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}
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if (BlockAddress > BlkIo->Media->LastBlock) {
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BlockAddress = 0;
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}
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ByteSize = BlkIo->Media->BlockSize*NumBlocks;
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Buffer = AllocatePool (ByteSize);
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if (Buffer) {
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Print (L"\n LBA 0x%016lx Size 0x%08x bytes BlkIo 0x%08x\n", BlockAddress, ByteSize, BlkIo);
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Status = BlkIo->ReadBlocks(BlkIo, BlkIo->Media->MediaId, BlockAddress, ByteSize, Buffer);
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if (Status == EFI_SUCCESS) {
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DumpHex (2, 0, ByteSize, Buffer);
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EFIStructsPrint (Buffer, BlkIo->Media->BlockSize, BlockAddress, BlkIo);
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} else {
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Print (L" ERROR in Read %er\n", Status);
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}
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FreePool (Buffer);
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}
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return EFI_SUCCESS;
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}
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