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system76-edk2/ShellPkg/Library/UefiShellDebug1CommandsLib/SerMode.c
Tapan Shah 68227ac33e ShellPkg: decode serial console attribute set failure status when used thru sermode command 
Serial console driver may not support all databits / stopbits attribute values. 
But ‘sermode’ command only displays a general error indicating operation failure. 
Instead it should decode error status and report more accurate error message.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tapan Shah <tapandshah@hp.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17978 6f19259b-4bc3-4df7-8a09-765794883524
2015-07-14 17:54:12 +00:00

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11 KiB
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/** @file
Main file for SerMode shell Debug1 function.
(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
Copyright (c) 2005 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "UefiShellDebug1CommandsLib.h"
#include <Library/ShellLib.h>
#include <Protocol/SerialIo.h>
/**
Display information about a serial device by it's handle.
If HandleValid is FALSE, do all devices.
@param[in] HandleIdx The handle index for the device.
@param[in] HandleValid TRUE if HandleIdx is valid.
@retval SHELL_INVALID_PARAMETER A parameter was invalid.
@retval SHELL_SUCCESS The operation was successful.
**/
SHELL_STATUS
EFIAPI
DisplaySettings (
IN UINTN HandleIdx,
IN BOOLEAN HandleValid
)
{
EFI_SERIAL_IO_PROTOCOL *SerialIo;
UINTN NoHandles;
EFI_HANDLE *Handles;
EFI_STATUS Status;
UINTN Index;
CHAR16 *StopBits;
CHAR16 Parity;
SHELL_STATUS ShellStatus;
Handles = NULL;
StopBits = NULL;
ShellStatus = SHELL_SUCCESS;
Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiSerialIoProtocolGuid, NULL, &NoHandles, &Handles);
if (EFI_ERROR (Status)) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_NO_FOUND), gShellDebug1HiiHandle, L"sermode");
return SHELL_INVALID_PARAMETER;
}
for (Index = 0; Index < NoHandles; Index++) {
if (HandleValid) {
if (ConvertHandleIndexToHandle(HandleIdx) != Handles[Index]) {
continue;
}
}
Status = gBS->HandleProtocol (Handles[Index], &gEfiSerialIoProtocolGuid, (VOID**)&SerialIo);
if (!EFI_ERROR (Status)) {
switch (SerialIo->Mode->Parity) {
case DefaultParity:
Parity = 'D';
break;
case NoParity:
Parity = 'N';
break;
case EvenParity:
Parity = 'E';
break;
case OddParity:
Parity = 'O';
break;
case MarkParity:
Parity = 'M';
break;
case SpaceParity:
Parity = 'S';
break;
default:
Parity = 'U';
}
switch (SerialIo->Mode->StopBits) {
case DefaultStopBits:
StopBits = L"Default";
break;
case OneStopBit:
StopBits = L"1";
break;
case TwoStopBits:
StopBits = L"2";
break;
case OneFiveStopBits:
StopBits = L"1.5";
break;
default:
StopBits = L"Unknown";
}
ShellPrintHiiEx(
-1,
-1,
NULL,
STRING_TOKEN (STR_SERMODE_DISPLAY),
gShellDebug1HiiHandle,
ConvertHandleToHandleIndex (Handles[Index]),
Handles[Index],
SerialIo->Mode->BaudRate,
Parity,
SerialIo->Mode->DataBits,
StopBits
);
} else {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_NO_FOUND), gShellDebug1HiiHandle, L"sermode");
ShellStatus = SHELL_NOT_FOUND;
break;
}
if (HandleValid) {
break;
}
}
if (Index == NoHandles) {
if ((NoHandles != 0 && HandleValid) || 0 == NoHandles) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_NOT_FOUND), gShellDebug1HiiHandle, L"sermode");
ShellStatus = SHELL_NOT_FOUND;
}
}
return ShellStatus;
}
/**
Function for 'sermode' command.
@param[in] ImageHandle Handle to the Image (NULL if Internal).
@param[in] SystemTable Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunSerMode (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
SHELL_STATUS ShellStatus;
UINTN Index;
UINTN NoHandles;
EFI_HANDLE *Handles;
EFI_PARITY_TYPE Parity;
EFI_STOP_BITS_TYPE StopBits;
UINTN HandleIdx;
UINTN BaudRate;
UINTN DataBits;
UINTN Value;
EFI_SERIAL_IO_PROTOCOL *SerialIo;
LIST_ENTRY *Package;
CHAR16 *ProblemParam;
CONST CHAR16 *Temp;
UINT64 Intermediate;
ShellStatus = SHELL_SUCCESS;
HandleIdx = 0;
Parity = DefaultParity;
Handles = NULL;
NoHandles = 0;
Index = 0;
Package = NULL;
Status = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, TRUE);
if (EFI_ERROR(Status)) {
if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDebug1HiiHandle, L"sermode", ProblemParam);
FreePool(ProblemParam);
ShellStatus = SHELL_INVALID_PARAMETER;
} else {
ASSERT(FALSE);
}
} else {
if (ShellCommandLineGetCount(Package) < 6 && ShellCommandLineGetCount(Package) > 2) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellDebug1HiiHandle, L"sermode");
ShellStatus = SHELL_INVALID_PARAMETER;
} else if (ShellCommandLineGetCount(Package) > 6) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellDebug1HiiHandle, L"sermode");
ShellStatus = SHELL_INVALID_PARAMETER;
} else {
Temp = ShellCommandLineGetRawValue(Package, 1);
if (Temp != NULL) {
Status = ShellConvertStringToUint64(Temp, &Intermediate, TRUE, FALSE);
HandleIdx = (UINTN)Intermediate;
Temp = ShellCommandLineGetRawValue(Package, 2);
if (Temp == NULL) {
ShellStatus = DisplaySettings (HandleIdx, TRUE);
goto Done;
}
} else {
ShellStatus = DisplaySettings (0, FALSE);
goto Done;
}
Temp = ShellCommandLineGetRawValue(Package, 2);
if (Temp != NULL) {
BaudRate = ShellStrToUintn(Temp);
} else {
ASSERT(FALSE);
BaudRate = 0;
}
Temp = ShellCommandLineGetRawValue(Package, 3);
if (Temp == NULL || StrLen(Temp)>1) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellDebug1HiiHandle, L"sermode", Temp);
ShellStatus = SHELL_INVALID_PARAMETER;
} else {
switch(Temp[0]){
case 'd':
case 'D':
Parity = DefaultParity;
break;
case 'n':
case 'N':
Parity = NoParity;
break;
case 'e':
case 'E':
Parity = EvenParity;
break;
case 'o':
case 'O':
Parity = OddParity;
break;
case 'm':
case 'M':
Parity = MarkParity;
break;
case 's':
case 'S':
Parity = SpaceParity;
break;
default:
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellDebug1HiiHandle, L"sermode", Temp);
ShellStatus = SHELL_INVALID_PARAMETER;
goto Done;
}
}
Temp = ShellCommandLineGetRawValue(Package, 4);
if (Temp != NULL) {
DataBits = ShellStrToUintn(Temp);
} else {
//
// make sure this is some number not in the list below.
//
DataBits = 0;
}
switch (DataBits) {
case 4:
case 7:
case 8:
break;
default:
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellDebug1HiiHandle, L"sermode", Temp);
ShellStatus = SHELL_INVALID_PARAMETER;
goto Done;
}
Temp = ShellCommandLineGetRawValue(Package, 5);
Value = ShellStrToUintn(Temp);
switch (Value) {
case 0:
StopBits = DefaultStopBits;
break;
case 1:
StopBits = OneStopBit;
break;
case 2:
StopBits = TwoStopBits;
break;
case 15:
StopBits = OneFiveStopBits;
break;
default:
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellDebug1HiiHandle, L"sermode", Temp);
ShellStatus = SHELL_INVALID_PARAMETER;
goto Done;
}
Status = gBS->LocateHandleBuffer(ByProtocol, &gEfiSerialIoProtocolGuid, NULL, &NoHandles, &Handles);
if (EFI_ERROR (Status)) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_NO_FOUND), gShellDebug1HiiHandle, L"sermode");
ShellStatus = SHELL_INVALID_PARAMETER;
goto Done;
}
for (Index = 0; Index < NoHandles; Index++) {
if (ConvertHandleIndexToHandle (HandleIdx) != Handles[Index]) {
continue;
}
Status = gBS->HandleProtocol (Handles[Index], &gEfiSerialIoProtocolGuid, (VOID**)&SerialIo);
if (!EFI_ERROR (Status)) {
Status = SerialIo->SetAttributes (
SerialIo,
(UINT64) BaudRate,
SerialIo->Mode->ReceiveFifoDepth,
SerialIo->Mode->Timeout,
Parity,
(UINT8) DataBits,
StopBits
);
if (EFI_ERROR (Status)) {
if (Status == EFI_INVALID_PARAMETER) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_SET_UNSUPPORTED), gShellDebug1HiiHandle, L"sermode", ConvertHandleToHandleIndex(Handles[Index]));
ShellStatus = SHELL_UNSUPPORTED;
} else if (Status == EFI_DEVICE_ERROR) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_SET_DEV_ERROR), gShellDebug1HiiHandle, L"sermode", ConvertHandleToHandleIndex(Handles[Index]));
ShellStatus = SHELL_ACCESS_DENIED;
} else {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_SET_FAIL), gShellDebug1HiiHandle, L"sermode", ConvertHandleToHandleIndex(Handles[Index]));
ShellStatus = SHELL_ACCESS_DENIED;
}
} else {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_SET_HANDLE), gShellDebug1HiiHandle, ConvertHandleToHandleIndex(Handles[Index]));
}
break;
}
}
}
}
if (ShellStatus == SHELL_SUCCESS && Index == NoHandles) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SERMODE_BAD_HANDLE), gShellDebug1HiiHandle, L"sermode", HandleIdx);
ShellStatus = SHELL_INVALID_PARAMETER;
}
Done:
if (Package != NULL) {
ShellCommandLineFreeVarList (Package);
}
if (Handles != NULL) {
FreePool (Handles);
}
return ShellStatus;
}
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