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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO2PR03MB2360 Subject: [edk2] [PATCH v2] MdeModulePkg/SerialDxe: Fix not able to change serial attributes X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Pankaj Bansal Content-Transfer-Encoding: quoted-printable Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" X-ZohoMail: RSF_4 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Issue : When try to change serial attributes using sermode command, the default values are set Cause : The SerialReset command resets the attributes' values to default Fix : Serial Reset command should set the attributes which have been changed by user after calling SerialSetAttributes. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Pankaj Bansal --- Changes in v2: - Modified Patch description MdeModulePkg/Universal/SerialDxe/SerialIo.c | 66 ++++++++-----------------= ---- 1 file changed, 18 insertions(+), 48 deletions(-) diff --git a/MdeModulePkg/Universal/SerialDxe/SerialIo.c b/MdeModulePkg/Uni= versal/SerialDxe/SerialIo.c index 43d33db..dc7e13a 100644 --- a/MdeModulePkg/Universal/SerialDxe/SerialIo.c +++ b/MdeModulePkg/Universal/SerialDxe/SerialIo.c @@ -220,7 +220,6 @@ SerialReset ( ) { EFI_STATUS Status; - EFI_TPL Tpl; =20 Status =3D SerialPortInitialize (); if (EFI_ERROR (Status)) { @@ -228,49 +227,17 @@ SerialReset ( } =20 // - // Set the Serial I/O mode and update the device path - // - - Tpl =3D gBS->RaiseTPL (TPL_NOTIFY); - - // - // Set the Serial I/O mode - // - This->Mode->ReceiveFifoDepth =3D PcdGet16 (PcdUartDefaultReceiveFifoDep= th); - This->Mode->Timeout =3D 1000 * 1000; - This->Mode->BaudRate =3D PcdGet64 (PcdUartDefaultBaudRate); - This->Mode->DataBits =3D (UINT32) PcdGet8 (PcdUartDefaultDataBi= ts); - This->Mode->Parity =3D (UINT32) PcdGet8 (PcdUartDefaultParity= ); - This->Mode->StopBits =3D (UINT32) PcdGet8 (PcdUartDefaultStopBi= ts); - - // - // Check if the device path has actually changed - // - if (mSerialDevicePath.Uart.BaudRate =3D=3D This->Mode->BaudRate && - mSerialDevicePath.Uart.DataBits =3D=3D (UINT8) This->Mode->DataBits = && - mSerialDevicePath.Uart.Parity =3D=3D (UINT8) This->Mode->Parity && - mSerialDevicePath.Uart.StopBits =3D=3D (UINT8) This->Mode->StopBits - ) { - gBS->RestoreTPL (Tpl); - return EFI_SUCCESS; - } - - // - // Update the device path + // Go set the current attributes // - mSerialDevicePath.Uart.BaudRate =3D This->Mode->BaudRate; - mSerialDevicePath.Uart.DataBits =3D (UINT8) This->Mode->DataBits; - mSerialDevicePath.Uart.Parity =3D (UINT8) This->Mode->Parity; - mSerialDevicePath.Uart.StopBits =3D (UINT8) This->Mode->StopBits; - - Status =3D gBS->ReinstallProtocolInterface ( - mSerialHandle, - &gEfiDevicePathProtocolGuid, - &mSerialDevicePath, - &mSerialDevicePath - ); - - gBS->RestoreTPL (Tpl); + Status =3D This->SetAttributes ( + This, + This->Mode->BaudRate, + This->Mode->ReceiveFifoDepth, + This->Mode->Timeout, + (EFI_PARITY_TYPE) This->Mode->Parity, + (UINT8) This->Mode->DataBits, + (EFI_STOP_BITS_TYPE) This->Mode->StopBits + ); =20 return Status; } @@ -513,11 +480,6 @@ SerialDxeInitialize ( { EFI_STATUS Status; =20 - Status =3D SerialPortInitialize (); - if (EFI_ERROR (Status)) { - return Status; - } - mSerialIoMode.BaudRate =3D PcdGet64 (PcdUartDefaultBaudRate); mSerialIoMode.DataBits =3D (UINT32) PcdGet8 (PcdUartDefaultDataBits); mSerialIoMode.Parity =3D (UINT32) PcdGet8 (PcdUartDefaultParity); @@ -529,6 +491,14 @@ SerialDxeInitialize ( mSerialDevicePath.Uart.StopBits =3D PcdGet8 (PcdUartDefaultStopBits); =20 // + // Issue a reset to initialize the COM port + // + Status =3D mSerialIoTemplate.Reset (&mSerialIoTemplate); + if (EFI_ERROR (Status)) { + return Status; + } + + // // Make a new handle with Serial IO protocol and its device path on it. // Status =3D gBS->InstallMultipleProtocolInterfaces ( --=20 2.7.4 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel