SerialDxe was migrated to MdeModulePkg from EmbeddedPkg, and all users of the latter were moved to the former. However, the new version is not quite identical to the original, in ways that break ARM platforms that use the PL011 driver.
In SerialReset(), the serial port is reset to its default values, but the defaults used by the new version for ReceiveFifoDepth and Timeout deviate from the original values. So put them back. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <[email protected]> --- MdeModulePkg/Universal/SerialDxe/SerialIo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/MdeModulePkg/Universal/SerialDxe/SerialIo.c b/MdeModulePkg/Universal/SerialDxe/SerialIo.c index de928d1719e9..9e9db28ce5cc 100644 --- a/MdeModulePkg/Universal/SerialDxe/SerialIo.c +++ b/MdeModulePkg/Universal/SerialDxe/SerialIo.c @@ -233,8 +233,8 @@ SerialReset ( // // Set the Serial I/O mode // - This->Mode->ReceiveFifoDepth = 1; - This->Mode->Timeout = 0; + This->Mode->ReceiveFifoDepth = 0; + This->Mode->Timeout = 1000000; This->Mode->BaudRate = PcdGet64 (PcdUartDefaultBaudRate); This->Mode->DataBits = (UINT32) PcdGet8 (PcdUartDefaultDataBits); This->Mode->Parity = (UINT32) PcdGet8 (PcdUartDefaultParity); -- 2.5.0 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
