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Biswas Arghya
414e39f4e5
New shell command 'usbdev' added to enumerate USB bus and list down all the USB devices that are found on the bus. Signed-off-by: Biswas Arghya <arghya.biswas@intel.com> Signed-off-by: Sachin Kamat <sachin.kamat@intel.com>
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/** @file
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Shell command `usbdev` to view all usb device list
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Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/BootloaderCommonLib.h>
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#include <Library/ShellLib.h>
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#include <Library/UsbBlockIoLib.h>
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#include <Library/UsbInitLib.h>
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#include <Library/UsbBusLib.h>
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#include <Guid/OsBootOptionGuid.h>
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/**
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Usb enumeration and listing commands
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@param[in] Shell shell instance
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@param[in] Argc number of command line arguments
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@param[in] Argv command line arguments
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@retval EFI_SUCCESS
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**/
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EFI_STATUS
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EFIAPI
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ShellCommandUsbDevFunc (
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IN SHELL *Shell,
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IN UINTN Argc,
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IN CHAR16 *Argv[]
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);
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CONST SHELL_COMMAND ShellCommandUsbDev = {
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L"usbdev",
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L"Display USB Devices",
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&ShellCommandUsbDevFunc
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};
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/**
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Usb enumeration and listing commands
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@param[in] Shell shell instance
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@param[in] Argc number of command line arguments
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@param[in] Argv command line arguments
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@retval EFI_SUCCESS
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**/
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EFI_STATUS
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EFIAPI
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ShellCommandUsbDevFunc (
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IN SHELL *Shell,
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IN UINTN Argc,
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IN CHAR16 *Argv[]
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)
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{
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EFI_STATUS Status;
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UINTN BaseAddress;
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UINT32 UsbIoCount;
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UINTN Index;
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PEI_USB_IO_PPI **UsbIoArray;
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CONST CHAR16 *NameStr;
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UINTN StringSize;
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UINTN StringIndex;
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UINTN CharFound;
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BaseAddress = GetDeviceAddr (OsBootDeviceUsb, 0);
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if (BaseAddress == 0) {
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ShellPrint (L"Base Address is 0");
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return EFI_ABORTED;
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} else if (!(BaseAddress & 0xFF000000)) {
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BaseAddress = TO_MM_PCI_ADDRESS (BaseAddress);
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}
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Status = InitUsbDevices (BaseAddress);
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if (!EFI_ERROR(Status)) {
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Status = GetUsbDevices ((PEI_USB_IO_PPI **)&UsbIoArray, &UsbIoCount);
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}
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if (EFI_ERROR(Status)) {
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ShellPrint (L"Failed to initialize USB bus !\n");
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return Status;
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}
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ShellPrint (L"\n");
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for (Index = 0; Index < UsbIoCount; Index++) {
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NameStr = GetUsbDeviceNameString (UsbIoArray[Index]);
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if (NameStr == NULL) {
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NameStr = L"N/A";
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}
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StringSize = StrSize (NameStr);
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CharFound = 0;
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for (StringIndex = 0; StringIndex < StringSize; StringIndex++) {
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if (NameStr[StringIndex] == 0) {
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break;
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}
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//
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// Checking the NameStr is not combination of spaces and tabs
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//
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if (((char)NameStr[StringIndex]) != 32 && ((char)NameStr[StringIndex]) != 9) {
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CharFound++;
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}
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}
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if (CharFound == 0) {
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NameStr = L"Unnamed Device";
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}
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ShellPrint (L"USB Device %2d: %s\n", Index + 1, NameStr);
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}
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ShellPrint (L"\n");
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Status = DeinitUsbDevices();
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if (EFI_ERROR(Status)) {
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ShellPrint (L"Failed to Deinitialize USB bus !\n");
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return Status;
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}
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return EFI_SUCCESS;
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}
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