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Flush cache after every write to in memory serial

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This commit is contained in:
Zhuowei Zhang 2019-02-23 16:37:11 -08:00
parent 941ccaf626
commit aa8f3cccae
2 changed files with 5 additions and 0 deletions
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2
Pixel3XL/Library/InMemorySerialPortLib/InMemorySerialPortLib.c
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@ -15,6 +15,7 @@
#include <Base.h> #include <Base.h>
#include <Library/SerialPortLib.h> #include <Library/SerialPortLib.h>
#include <Library/CacheMaintenanceLib.h>
/** /**
Initialize the serial device hardware. Initialize the serial device hardware.
@ -50,6 +51,7 @@ static void mem_putchar(UINT8 c) {
if (offset >= size) { if (offset >= size) {
offset = 0; offset = 0;
} }
WriteBackInvalidateDataCacheRange(base, size);
} }
/** /**

3
Pixel3XL/Library/InMemorySerialPortLib/InMemorySerialPortLib.inf
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@ -34,3 +34,6 @@
[Packages] [Packages]
MdePkg/MdePkg.dec MdePkg/MdePkg.dec
[LibraryClasses]
CacheMaintenanceLib