UefiCpuPkg/CpuDxe: Add no-op InitializeMpSupport

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
UefiCpuPkg/CpuDxe: Add ApEntryPointInC

This is the function the AP assembly code will expect to call after
getting a lock and setting up the stack.

Only one AP will enter this routine at a time.

If ApEntryPointInC exits, then the assembly code will loop around to
grab the lock, setup the stack, and call ApEntryPointInC again.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
UefiCpuPkg/CpuDxe: Add stackless assembly AP entry points

TODO: Port to MASM

The AP startup code simply jumps into this code with the CpuDxe driver
without setting up a stack for the processor.

Therefore, this code must setup the stack before calling into C code.

This is the basic flow:
* AP enters CpuDxe driver code (AsmApEntryPoint) without stack
  - AP grabs a lock
  - AP sets up stack
  - AP calls CpuMp.c:ApEntryPointInC
  - If ApEntryPointInC returns, the lock is freed, and another AP may
    run
  - The AP C code may call AsmApDoneWithCommonStack to indicate that
    the AP is no longer using the stack, and another may therefore
    proceed to use the stack and then call ApEntryPointInC

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
UefiCpuPkg/CpuDxe: Move GDT structures into CpuGdt.h

We'll want to use the structures for AP startup.

Note: It seems previously we were not using '#pragma pack ()' in
      CpuGdt.c.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
UefiCpuPkg/CpuDxe: Add StartApsStackless routine

This routine starts the APs and directs them to run the specified
code.

The specified code is entered without a stack being available.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
UefiCpuPkg/CpuDxe: Startup APs

This sequence should happen:
* CpuMp.c: Allocate a stack for the APs
* ApStartup.c: Send Start IPI to wake APs in 16-bit real mode
* MpAsm.S: AP enters CpuDxe driver code without stack
  - AP grabs a lock
  - AP sets up stack
  - AP calls CpuMp.c:ApEntryPointInC

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
UefiCpuPkg/CpuDxe: Allocate Stack for APs

we allocate Stack for each AP via Memory Allocation Services. then
we can free the temporary stack at the end.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: extract the enable apic SVR code

In BaseXapicLib.c, there were duplicate codes in enable
apic, so extract it to an independent method.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: update APs idtr and enable APs APIC

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: Detect APs and save processors info

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: introduce a new interrupt handler

we register a new interrupt handler for AP to invoke the specified
produce. which vector is CALL_FUNCTION_VECTOR 0x30.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: install Mp Service protocol

and implement two simple methods: GetNumberOfProcessors() and
WhoAmI()

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: implement Mp Services: GetProcessorInfo()

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: implement Mp Services: EnableDisableAP()

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: implement Mp Services: StartupThisAP()

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: implement Mp Services: StartupAllAPs()

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
UefiCpuPkg/CpuDxe: MpService : checking ReadToBootEvent is signaled or not

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>