diff options
| author | Chen Fan <chen.fan.fnst@cn.fujitsu.com> | 2014-11-13 18:26:53 +0000 |
|---|---|---|
| committer | jljusten <jljusten@Edk2> | 2014-11-13 18:26:53 +0000 |
| commit | e7938b5a869fc42df7f026752f39ea85090eb3f9 (patch) | |
| tree | 61a4a6f1f087f26ce8da12ed11732a49aea0b674 /UefiCpuPkg/CpuDxe/CpuMp.c | |
| parent | d894d8b704324da8ed902677703ed9d4f7c85076 (diff) | |
| download | edk2-platforms-e7938b5a869fc42df7f026752f39ea85090eb3f9.tar.xz | |
UefiCpuPkg/CpuDxe: implement Mp Services:GetProcessorInfo()
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16356 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'UefiCpuPkg/CpuDxe/CpuMp.c')
| -rw-r--r-- | UefiCpuPkg/CpuDxe/CpuMp.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/UefiCpuPkg/CpuDxe/CpuMp.c b/UefiCpuPkg/CpuDxe/CpuMp.c index 23d395daec..4fae3f2f0d 100644 --- a/UefiCpuPkg/CpuDxe/CpuMp.c +++ b/UefiCpuPkg/CpuDxe/CpuMp.c @@ -26,7 +26,7 @@ VOID *mApStackStart = 0; EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {
GetNumberOfProcessors,
- NULL, // GetProcessorInfo,
+ GetProcessorInfo,
NULL, // StartupAllAPs,
NULL, // StartupThisAP,
NULL, // SwitchBSP,
@@ -115,6 +115,56 @@ GetNumberOfProcessors ( }
/**
+ Gets detailed MP-related information on the requested processor at the
+ instant this call is made. This service may only be called from the BSP.
+
+ This service retrieves detailed MP-related information about any processor
+ on the platform. Note the following:
+ - The processor information may change during the course of a boot session.
+ - The information presented here is entirely MP related.
+
+ Information regarding the number of caches and their sizes, frequency of operation,
+ slot numbers is all considered platform-related information and is not provided
+ by this service.
+
+ @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL
+ instance.
+ @param[in] ProcessorNumber The handle number of processor.
+ @param[out] ProcessorInfoBuffer A pointer to the buffer where information for
+ the requested processor is deposited.
+
+ @retval EFI_SUCCESS Processor information was returned.
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.
+ @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
+ @retval EFI_NOT_FOUND The processor with the handle specified by
+ ProcessorNumber does not exist in the platform.
+
+**/
+EFI_STATUS
+EFIAPI
+GetProcessorInfo (
+ IN EFI_MP_SERVICES_PROTOCOL *This,
+ IN UINTN ProcessorNumber,
+ OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
+ )
+{
+ if (ProcessorInfoBuffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (!IsBSP ()) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {
+ return EFI_NOT_FOUND;
+ }
+
+ CopyMem (ProcessorInfoBuffer, &mMpSystemData.CpuDatas[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));
+ return EFI_SUCCESS;
+}
+
+/**
This return the handle number for the calling processor. This service may be
called from the BSP and APs.
|