Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 23c71536efbebed57942947668f470f934324477
https://github.com/tianocore/edk2/commit/23c71536efbebed57942947668f470f934324477
Author: PaytonX Hsieh <paytonx.hs...@intel.com>
Date: 2023-05-02 (Tue, 02 May 2023)
Changed paths:
M UefiPayloadPkg/Library/BaseSerialPortLibHob/BaseSerialPortLibHob.c
A UefiPayloadPkg/Library/BaseSerialPortLibHob/DxeBaseSerialPortLibHob.c
A UefiPayloadPkg/Library/BaseSerialPortLibHob/DxeBaseSerialPortLibHob.inf
M UefiPayloadPkg/UefiPayloadPkg.dsc
Log Message:
-----------
UefiPayloadPkg: Fix issues when MULTIPLE_DEBUG_PORT_SUPPORT is true
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4427
1. Since UART speed is slower than CPU, BIOS need to check the write
buffer is empty, to avoid overwrite the buffer content.
2. LPSS UART might disable MMIO space for Windows debug usage during
ExitBootServices event. BIOS need to avoid access the MMIO space
after ExitBootServices.
Cc: Guo Dong <guo.d...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Sean Rhodes <sean@starlabs.systems>
Cc: James Lu <james...@intel.com>
Reviewed-by: Gua Guo <gua....@intel.com>
Signed-off-by: PaytonX Hsieh <paytonx.hs...@intel.com>
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