{\r
CONST GUID *GuidPtr;\r
\r
+ ASSERT (Buffer != NULL);\r
+ //\r
+ // Make sure Buffer is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT (((UINTN) Buffer & 7) == 0);\r
+\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+\r
GuidPtr = (GUID*)Buffer;\r
Buffer = GuidPtr + Length / sizeof (*GuidPtr);\r
while (GuidPtr < (CONST GUID*)Buffer) {\r
EFIAPI\r
ZeroMem (\r
IN VOID *Buffer,\r
- IN UINTN Size\r
+ IN UINTN Length\r
)\r
{\r
- ASSERT (Buffer != NULL);\r
- return InternalMemSetMem (Buffer, Size, 0);\r
+ ASSERT (!(Buffer == NULL && Length > 0));\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+ return InternalMemSetMem (Buffer, Length, 0);\r
}\r
{\r
CONST GUID *GuidPtr;\r
\r
+ ASSERT (Buffer != NULL);\r
+ //\r
+ // Make sure Buffer is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT (((UINTN) Buffer & 7) == 0);\r
+\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+\r
GuidPtr = (GUID*)Buffer;\r
Buffer = GuidPtr + Length / sizeof (*GuidPtr);\r
while (GuidPtr < (CONST GUID*)Buffer) {\r
EFIAPI\r
ZeroMem (\r
IN VOID *Buffer,\r
- IN UINTN Size\r
+ IN UINTN Length\r
)\r
{\r
- ASSERT (Buffer != NULL);\r
- return InternalMemSetMem (Buffer, Size, 0);\r
+ ASSERT (!(Buffer == NULL && Length > 0));\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+ return InternalMemSetMem (Buffer, Length, 0);\r
}\r
{\r
CONST GUID *GuidPtr;\r
\r
+ ASSERT (Buffer != NULL);\r
+ //\r
+ // Make sure Buffer is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT (((UINTN) Buffer & 7) == 0);\r
+\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+\r
GuidPtr = (GUID*)Buffer;\r
Buffer = GuidPtr + Length / sizeof (*GuidPtr);\r
while (GuidPtr < (CONST GUID*)Buffer) {\r
EFIAPI\r
ZeroMem (\r
IN VOID *Buffer,\r
- IN UINTN Size\r
+ IN UINTN Length\r
)\r
{\r
- ASSERT (Buffer != NULL);\r
- return InternalMemSetMem (Buffer, Size, 0);\r
+ ASSERT (!(Buffer == NULL && Length > 0));\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+ return InternalMemSetMem (Buffer, Length, 0);\r
}\r
{\r
CONST GUID *GuidPtr;\r
\r
+ ASSERT (Buffer != NULL);\r
+ //\r
+ // Make sure Buffer is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT (((UINTN) Buffer & 7) == 0);\r
+\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+\r
GuidPtr = (GUID*)Buffer;\r
Buffer = GuidPtr + Length / sizeof (*GuidPtr);\r
while (GuidPtr < (CONST GUID*)Buffer) {\r
EFIAPI\r
ZeroMem (\r
IN VOID *Buffer,\r
- IN UINTN Size\r
+ IN UINTN Length\r
)\r
{\r
- ASSERT (Buffer != NULL);\r
- return InternalMemSetMem (Buffer, Size, 0);\r
+ ASSERT (!(Buffer == NULL && Length > 0));\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+ return InternalMemSetMem (Buffer, Length, 0);\r
}\r
<Filename>Ipf/ReadItc.s</Filename>\r
<Filename>Ipf/IpfTimerLib.c</Filename>\r
</Arch>\r
+ <Arch ArchType="EBC">\r
+ <Filename>Ebc/EbcTimerLib.c</Filename>\r
+ </Arch>\r
</SourceFiles>\r
<Includes>\r
<PackageName>MdePkg</PackageName>\r
--- /dev/null
+/** @file\r
+ Timer Library functions for EBC.\r
+\r
+ Copyright (c) 2006, Intel Corporation<BR>\r
+ All rights reserved. This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+ Module Name: EbcTimerLib.c\r
+\r
+**/\r
+\r
+/**\r
+ Stalls the CPU for at least the given number of microseconds.\r
+\r
+ Stalls the CPU for the number of microseconds specified by MicroSeconds.\r
+\r
+ @param MicroSeconds The minimum number of microseconds to delay.\r
+\r
+ @return Return value depends on implementation.\r
+\r
+**/\r
+UINTN\r
+EFIAPI\r
+MicroSecondDelay (\r
+ IN UINTN MicroSeconds\r
+ )\r
+{\r
+ //\r
+ // EBC architecture does not support local APIC timer.\r
+ //\r
+ ASSERT (FALSE);\r
+ return 0;\r
+}\r
+\r
+/**\r
+ Stalls the CPU for at least the given number of nanoseconds.\r
+\r
+ Stalls the CPU for the number of nanoseconds specified by NanoSeconds.\r
+\r
+ @param NanoSeconds The minimum number of nanoseconds to delay.\r
+\r
+ @return Return value depends on implementation.\r
+\r
+**/\r
+UINTN\r
+EFIAPI\r
+NanoSecondDelay (\r
+ IN UINTN NanoSeconds\r
+ )\r
+{\r
+ //\r
+ // EBC architecture does not support local APIC timer.\r
+ //\r
+ ASSERT (FALSE);\r
+ return 0;\r
+}\r
+\r
+/**\r
+ Retrieves the current value of a 64-bit free running performance counter.\r
+\r
+ Retrieves the current value of a 64-bit free running performance counter. The\r
+ counter can either count up by 1 or count down by 1. If the physical\r
+ performance counter counts by a larger increment, then the counter values\r
+ must be translated. The properties of the counter can be retrieved from\r
+ GetPerformanceCounterProperties().\r
+\r
+ @return The current value of the free running performance counter.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+GetPerformanceCounter (\r
+ VOID\r
+ )\r
+{\r
+ //\r
+ // EBC architecture does not support local APIC timer.\r
+ //\r
+ ASSERT (FALSE);\r
+ return 0;\r
+}\r
+\r
+/**\r
+ Retrieves the 64-bit frequency in Hz and the range of performance counter\r
+ values.\r
+\r
+ If StartValue is not NULL, then the value that the performance counter starts\r
+ with immediately after is it rolls over is returned in StartValue. If\r
+ EndValue is not NULL, then the value that the performance counter end with\r
+ immediately before it rolls over is returned in EndValue. The 64-bit\r
+ frequency of the performance counter in Hz is always returned. If StartValue\r
+ is less than EndValue, then the performance counter counts up. If StartValue\r
+ is greater than EndValue, then the performance counter counts down. For\r
+ example, a 64-bit free running counter that counts up would have a StartValue\r
+ of 0 and an EndValue of 0xFFFFFFFFFFFFFFFF. A 24-bit free running counter\r
+ that counts down would have a StartValue of 0xFFFFFF and an EndValue of 0.\r
+\r
+ @param StartValue The value the performance counter starts with when it\r
+ rolls over.\r
+ @param EndValue The value that the performance counter ends with before\r
+ it rolls over.\r
+\r
+ @return The frequency in Hz.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+GetPerformanceCounterProperties (\r
+ IN UINT64 *StartValue,\r
+ IN UINT64 *EndValue\r
+ )\r
+{\r
+ //\r
+ // EBC architecture does not support local APIC timer.\r
+ //\r
+ ASSERT (FALSE);\r
+ return 0; \r
+}\r
</MsaLibHeader>\r
<LibraryClassDefinitions>\r
<LibraryClass Usage="ALWAYS_PRODUCED">IoLib</LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">UefiBootServicesTableLib</LibraryClass>\r
<LibraryClass Usage="ALWAYS_CONSUMED">DebugLib</LibraryClass>\r
<LibraryClass Usage="ALWAYS_CONSUMED">BaseLib</LibraryClass>\r
</LibraryClassDefinitions>\r
\r
**/\r
\r
-static EFI_CPU_IO_PROTOCOL *gCpuIo;\r
+//\r
+// Globle varible to cache pointer to CpuIo protocol.\r
+//\r
+STATIC EFI_CPU_IO_PROTOCOL *mCpuIo = NULL;\r
\r
+/**\r
+ The constructor function caches the pointer to CpuIo protocol.\r
+ \r
+ The constructor function locates CpuIo protocol from protocol database.\r
+ It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. \r
+\r
+ @param ImageHandle The firmware allocated handle for the EFI image.\r
+ @param SystemTable A pointer to the EFI System Table.\r
+ \r
+ @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r
+\r
+**/\r
EFI_STATUS\r
IoLibConstructor (\r
IN EFI_HANDLE ImageHandle,\r
{\r
EFI_STATUS Status;\r
\r
- Status = SystemTable->BootServices->LocateProtocol (\r
- &gEfiCpuIoProtocolGuid,\r
- NULL,\r
- (VOID**)&gCpuIo\r
- );\r
+ Status = gBS->LocateProtocol (&gEfiCpuIoProtocolGuid, NULL, (VOID**) &mCpuIo);\r
ASSERT_EFI_ERROR (Status);\r
+\r
return Status;\r
}\r
\r
+/**\r
+ Reads registers in the EFI CPU I/O space.\r
+\r
+ Reads the I/O port specified by Port with registers width specified by Width.\r
+ The read value is returned. If such operations are not supported, then ASSERT().\r
+ This function must guarantee that all I/O read and write operations are serialized.\r
+\r
+ @param Port The base address of the I/O operation.\r
+ The caller is responsible for aligning the Address if required. \r
+ @param Width The width of the I/O operation.\r
+ \r
+ @return Data read from registers in the EFI CPU I/O space.\r
+\r
+**/\r
UINT64\r
EFIAPI\r
IoReadWorker (\r
IN EFI_CPU_IO_PROTOCOL_WIDTH Width\r
)\r
{\r
+ EFI_STATUS Status;\r
UINT64 Data;\r
\r
- gCpuIo->Io.Read (gCpuIo, Width, Port, 1, &Data);\r
+ Status = mCpuIo->Io.Read (mCpuIo, Width, Port, 1, &Data);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
return Data;\r
}\r
\r
+/**\r
+ Writes registers in the EFI CPU I/O space.\r
+\r
+ Writes the I/O port specified by Port with registers width and value specified by Width\r
+ and Data respectively. Data is returned. If such operations are not supported, then ASSERT().\r
+ This function must guarantee that all I/O read and write operations are serialized.\r
+\r
+ @param Port The base address of the I/O operation.\r
+ The caller is responsible for aligning the Address if required. \r
+ @param Width The width of the I/O operation.\r
+ @param Data The value to write to the I/O port.\r
+ \r
+ @return The paramter of Data.\r
+\r
+**/\r
UINT64\r
EFIAPI\r
IoWriteWorker (\r
IN UINT64 Data\r
)\r
{\r
- gCpuIo->Io.Write (gCpuIo, Width, Port, 1, &Data);\r
+ EFI_STATUS Status;\r
+\r
+ Status = mCpuIo->Io.Write (mCpuIo, Width, Port, 1, &Data);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
return Data;\r
}\r
\r
+/**\r
+ Reads memory-mapped registers in the EFI system memory space. \r
+\r
+ Reads the MMIO registers specified by Address with registers width specified by Width.\r
+ The read value is returned. If such operations are not supported, then ASSERT().\r
+ This function must guarantee that all MMIO read and write operations are serialized.\r
+\r
+ @param Address The MMIO register to read.\r
+ The caller is responsible for aligning the Address if required. \r
+ @param Width The width of the I/O operation.\r
+ \r
+ @return Data read from registers in the EFI system memory space.\r
+\r
+**/\r
UINT64\r
EFIAPI\r
MmioReadWorker (\r
IN EFI_CPU_IO_PROTOCOL_WIDTH Width\r
)\r
{\r
+ EFI_STATUS Status;\r
UINT64 Data;\r
\r
- gCpuIo->Mem.Read (gCpuIo, Width, Address, 1, &Data);\r
+ Status = mCpuIo->Mem.Read (mCpuIo, Width, Address, 1, &Data);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
return Data;\r
}\r
\r
+/**\r
+ Writes memory-mapped registers in the EFI system memory space. \r
+\r
+ Writes the MMIO registers specified by Address with registers width and value specified by Width\r
+ and Data respectively. Data is returned. If such operations are not supported, then ASSERT().\r
+ This function must guarantee that all MMIO read and write operations are serialized.\r
+\r
+ @param Address The MMIO register to read.\r
+ The caller is responsible for aligning the Address if required. \r
+ @param Width The width of the I/O operation.\r
+ \r
+ @return Data read from registers in the EFI system memory space.\r
+\r
+**/\r
UINT64\r
EFIAPI\r
MmioWriteWorker (\r
IN UINT64 Data\r
)\r
{\r
- gCpuIo->Mem.Write (gCpuIo, Width, Address, 1, &Data);\r
+ EFI_STATUS Status;\r
+\r
+ Status = mCpuIo->Mem.Write (mCpuIo, Width, Address, 1, &Data);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
return Data;\r
}\r
\r
IN UINTN Port\r
)\r
{\r
+ //\r
+ // Make sure Port is aligned on a 16-bit boundary.\r
+ //\r
+ ASSERT ((Port & 1) == 0);\r
return (UINT16)IoReadWorker (Port, EfiCpuIoWidthUint16);\r
}\r
\r
IN UINT16 Value\r
)\r
{\r
+ //\r
+ // Make sure Port is aligned on a 16-bit boundary.\r
+ //\r
+ ASSERT ((Port & 1) == 0);\r
return (UINT16)IoWriteWorker (Port, EfiCpuIoWidthUint16, Value);\r
}\r
\r
IN UINTN Port\r
)\r
{\r
+ //\r
+ // Make sure Port is aligned on a 32-bit boundary.\r
+ //\r
+ ASSERT ((Port & 3) == 0);\r
return (UINT32)IoReadWorker (Port, EfiCpuIoWidthUint32);\r
}\r
\r
IN UINT32 Value\r
)\r
{\r
+ //\r
+ // Make sure Port is aligned on a 32-bit boundary.\r
+ //\r
+ ASSERT ((Port & 3) == 0);\r
return (UINT32)IoWriteWorker (Port, EfiCpuIoWidthUint32, Value);\r
}\r
\r
IN UINTN Port\r
)\r
{\r
+ //\r
+ // Make sure Port is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT ((Port & 7) == 0);\r
return IoReadWorker (Port, EfiCpuIoWidthUint64);\r
}\r
\r
IN UINT64 Value\r
)\r
{\r
+ //\r
+ // Make sure Port is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT ((Port & 7) == 0);\r
return IoWriteWorker (Port, EfiCpuIoWidthUint64, Value);\r
}\r
\r
IN UINTN Address\r
)\r
{\r
+ //\r
+ // Make sure Address is aligned on a 16-bit boundary.\r
+ //\r
+ ASSERT ((Address & 1) == 0);\r
return (UINT16)MmioReadWorker (Address, EfiCpuIoWidthUint16);\r
}\r
\r
IN UINT16 Value\r
)\r
{\r
+ //\r
+ // Make sure Address is aligned on a 16-bit boundary.\r
+ //\r
+ ASSERT ((Address & 1) == 0);\r
return (UINT16)MmioWriteWorker (Address, EfiCpuIoWidthUint16, Value);\r
}\r
\r
IN UINTN Address\r
)\r
{\r
+ //\r
+ // Make sure Address is aligned on a 32-bit boundary.\r
+ //\r
+ ASSERT ((Address & 3) == 0);\r
return (UINT32)MmioReadWorker (Address, EfiCpuIoWidthUint32);\r
}\r
\r
IN UINT32 Value\r
)\r
{\r
+ //\r
+ // Make sure Address is aligned on a 32-bit boundary.\r
+ //\r
+ ASSERT ((Address & 3) == 0);\r
return (UINT32)MmioWriteWorker (Address, EfiCpuIoWidthUint32, Value);\r
}\r
\r
IN UINTN Address\r
)\r
{\r
+ //\r
+ // Make sure Address is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT ((Address & 7) == 0);\r
return (UINT64)MmioReadWorker (Address, EfiCpuIoWidthUint64);\r
}\r
\r
IN UINT64 Value\r
)\r
{\r
+ //\r
+ // Make sure Address is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT ((Address & 7) == 0);\r
return (UINT64)MmioWriteWorker (Address, EfiCpuIoWidthUint64, Value);\r
}\r
{\r
CONST GUID *GuidPtr;\r
\r
+ ASSERT (Buffer != NULL);\r
+ //\r
+ // Make sure Buffer is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT (((UINTN) Buffer & 7) == 0);\r
+\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+\r
GuidPtr = (GUID*)Buffer;\r
Buffer = GuidPtr + Length / sizeof (*GuidPtr);\r
while (GuidPtr < (CONST GUID*)Buffer) {\r
EFIAPI\r
ZeroMem (\r
IN VOID *Buffer,\r
- IN UINTN Size\r
+ IN UINTN Length\r
)\r
{\r
- ASSERT (Buffer != NULL);\r
- return InternalMemSetMem (Buffer, Size, 0);\r
+ ASSERT (!(Buffer == NULL && Length > 0));\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+ return InternalMemSetMem (Buffer, Length, 0);\r
}\r
{\r
CONST GUID *GuidPtr;\r
\r
+ ASSERT (Buffer != NULL);\r
+ //\r
+ // Make sure Buffer is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT (((UINTN) Buffer & 7) == 0);\r
+\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+\r
GuidPtr = (GUID*)Buffer;\r
Buffer = GuidPtr + Length / sizeof (*GuidPtr);\r
while (GuidPtr < (CONST GUID*)Buffer) {\r
EFIAPI\r
ZeroMem (\r
IN VOID *Buffer,\r
- IN UINTN Size\r
+ IN UINTN Length\r
)\r
{\r
- ASSERT (Buffer != NULL);\r
- return InternalMemSetMem (Buffer, Size, 0);\r
+ ASSERT (!(Buffer == NULL && Length > 0));\r
+ ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+ return InternalMemSetMem (Buffer, Length, 0);\r
}\r
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