# @Expression 0x80000002 | (gEfiMdeModulePkgTokenSpaceGuid.PcdSerialFifoControl & 0xD8) == 0\r
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialFifoControl|0x07|UINT8|0x00020005\r
\r
- ## TFTP BlockSize. Initial value 0 means using default block size which is (MTU-IP_HEADER-UDP_HEADER-TFTP_HEADER)\r
- # to handle all link layers. If the value is non zero, the PCD value will be used as block size.\r
+ ## This setting can override the default TFTP block size. A value of 0 computes\r
+ # the default from MTU information. A non-zero value will be used as block size\r
+ # in bytes.\r
# @Prompt TFTP block size.\r
gEfiMdeModulePkgTokenSpaceGuid.PcdTftpBlockSize|0x0|UINT64|0x30001026\r
\r