mirror of https://github.com/acidanthera/audk.git
UefiCpuPkg/CpuDxe: implement Mp Services:SwitchBSP()
by now, SwitchBSP() always return UNSUPPORTED 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@16360 6f19259b-4bc3-4df7-8a09-765794883524
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Chen Fan
jljusten
parent
5fee172fb7
commit
b7c05ba517
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@ -30,7 +30,7 @@ EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {
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GetProcessorInfo,
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GetProcessorInfo,
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StartupAllAPs,
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StartupAllAPs,
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StartupThisAP,
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StartupThisAP,
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NULL, // SwitchBSP,
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SwitchBSP,
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EnableDisableAP,
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EnableDisableAP,
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WhoAmI
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WhoAmI
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};
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};
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@ -891,6 +891,55 @@ StartupThisAP (
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return EFI_SUCCESS;
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return EFI_SUCCESS;
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}
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}
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/**
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. This call can only be performed
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by the current BSP.
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. The new BSP can take over the
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execution of the old BSP and continue seamlessly from where the old one left
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off. This service may not be supported after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT
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is signaled.
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If the BSP cannot be switched prior to the return from this service, then
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EFI_UNSUPPORTED must be returned.
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@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.
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@param[in] ProcessorNumber The handle number of AP that is to become the new
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BSP. The range is from 0 to the total number of
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logical processors minus 1. The total number of
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logical processors can be retrieved by
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EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().
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@param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an
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enabled AP. Otherwise, it will be disabled.
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@retval EFI_SUCCESS BSP successfully switched.
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@retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to
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this service returning.
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@retval EFI_UNSUPPORTED Switching the BSP is not supported.
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@retval EFI_SUCCESS The calling processor is an AP.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or
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a disabled AP.
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@retval EFI_NOT_READY The specified AP is busy.
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**/
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EFI_STATUS
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EFIAPI
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SwitchBSP (
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IN EFI_MP_SERVICES_PROTOCOL *This,
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IN UINTN ProcessorNumber,
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IN BOOLEAN EnableOldBSP
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)
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{
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//
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// Current always return unsupported.
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//
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return EFI_UNSUPPORTED;
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}
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/**
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/**
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This service lets the caller enable or disable an AP from this point onward.
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This service lets the caller enable or disable an AP from this point onward.
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This service may only be called from the BSP.
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This service may only be called from the BSP.
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@ -465,6 +465,49 @@ StartupThisAP (
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OUT BOOLEAN *Finished OPTIONAL
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OUT BOOLEAN *Finished OPTIONAL
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);
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);
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/**
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. This call can only be performed
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by the current BSP.
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. The new BSP can take over the
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execution of the old BSP and continue seamlessly from where the old one left
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off. This service may not be supported after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT
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is signaled.
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If the BSP cannot be switched prior to the return from this service, then
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EFI_UNSUPPORTED must be returned.
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@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.
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@param[in] ProcessorNumber The handle number of AP that is to become the new
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BSP. The range is from 0 to the total number of
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logical processors minus 1. The total number of
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logical processors can be retrieved by
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EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().
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@param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an
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enabled AP. Otherwise, it will be disabled.
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@retval EFI_SUCCESS BSP successfully switched.
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@retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to
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this service returning.
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@retval EFI_UNSUPPORTED Switching the BSP is not supported.
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@retval EFI_SUCCESS The calling processor is an AP.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or
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a disabled AP.
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@retval EFI_NOT_READY The specified AP is busy.
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**/
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EFI_STATUS
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EFIAPI
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SwitchBSP (
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IN EFI_MP_SERVICES_PROTOCOL *This,
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IN UINTN ProcessorNumber,
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IN BOOLEAN EnableOldBSP
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);
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/**
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/**
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This service lets the caller enable or disable an AP from this point onward.
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This service lets the caller enable or disable an AP from this point onward.
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This service may only be called from the BSP.
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This service may only be called from the BSP.
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