diff options
| -rw-r--r-- | MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.c | 2 | ||||
| -rw-r--r-- | MdeModulePkg/MdeModulePkg.dec | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.c b/MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.c index a6c990dee6..2238749215 100644 --- a/MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.c +++ b/MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.c @@ -158,7 +158,7 @@ SerialPortInitialize ( // Enable and reset FIFOs
// Strip reserved bits from PcdSerialFifoControl
//
- SerialPortWriteRegister (R_UART_FCR, (UINT8)(PcdGet8 (PcdSerialFifoControl) & 0x17));
+ SerialPortWriteRegister (R_UART_FCR, (UINT8)(PcdGet8 (PcdSerialFifoControl) & 0x27));
//
// Put Modem Control Register(MCR) into its reset state of 0x00.
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec index 11e9ffab25..4ab6358d49 100644 --- a/MdeModulePkg/MdeModulePkg.dec +++ b/MdeModulePkg/MdeModulePkg.dec @@ -444,7 +444,9 @@ # BIT0 - FIFO Enable. 0 = Disable FIFOs. 1 = Enable FIFOs.
# BIT1 - Clear receive FIFO. 1 = Clear FIFO.
# BIT2 - Clear transmit FIFO. 1 = Clear FIFO.
- # BIT7..BIT3 - Reserved. Must be 0.
+ # BIT4..BIT3 - Reserved. Must be 0.
+ # BIT5 - Enable 64-byte FIFO. 0 = Disable 64-byte FIFO. 1 = Enable 64-byte FIFO
+ # BIT7..BIT6 - Reserved. Must be 0.
#
# Default is to enable and clear all FIFOs.
#
|