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| author | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-03-16 02:58:51 +0000 |
|---|---|---|
| committer | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-03-16 02:58:51 +0000 |
| commit | acaa2726fbaa32a1adfa57caf8679eae316a8750 (patch) | |
| tree | c69a20dea647e2317152c24616a567f9a7677636 /MdeModulePkg | |
| parent | 831ff057d7bbb269cbdf9ab77079492a11ca0aa0 (diff) | |
| download | edk2-acaa2726fbaa32a1adfa57caf8679eae316a8750.zip edk2-acaa2726fbaa32a1adfa57caf8679eae316a8750.tar.gz edk2-acaa2726fbaa32a1adfa57caf8679eae316a8750.tar.bz2 | |
Add description for 64-byte FIFO enable bit for PcdSerialFifoControl.
Update SerialPortInitializer() to properly preserve BIT5 in FCR instead of BIT4.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11404 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg')
| -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 a6c990d..2238749 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 11e9ffa..4ab6358 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.
#
|