mirror of https://github.com/acidanthera/audk.git
131 lines
2.6 KiB
ArmAsm
131 lines
2.6 KiB
ArmAsm
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php.
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Module Name:
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#
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# PeiCoreEntry.S
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#
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# Abstract:
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#
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# Find and call SecStartup
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#
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#------------------------------------------------------------------------------
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ASM_GLOBAL ASM_PFX(CallPeiCoreEntryPoint)
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ASM_PFX(CallPeiCoreEntryPoint):
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#
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# Obtain the hob list pointer
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#
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movl 0x4(%esp), %eax
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#
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# Obtain the stack information
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# ECX: start of range
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# EDX: end of range
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#
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movl 0x8(%esp), %ecx
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movl 0xC(%esp), %edx
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#
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# Platform init
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#
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pushal
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pushl %edx
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pushl %ecx
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pushl %eax
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call ASM_PFX(PlatformInit)
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popl %eax
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popl %eax
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popl %eax
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popal
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#
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# Set stack top pointer
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#
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movl %edx, %esp
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#
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# Push the hob list pointer
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#
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pushl %eax
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#
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# Save the value
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# ECX: start of range
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# EDX: end of range
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#
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movl %esp, %ebp
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pushl %ecx
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pushl %edx
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#
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# Push processor count to stack first, then BIST status (AP then BSP)
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#
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movl $1, %eax
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cpuid
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shr $16, %ebx
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andl $0x000000FF, %ebx
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cmp $1, %bl
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jae PushProcessorCount
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#
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# Some processors report 0 logical processors. Effectively 0 = 1.
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# So we fix up the processor count
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#
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inc %ebx
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PushProcessorCount:
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pushl %ebx
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#
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# We need to implement a long-term solution for BIST capture. For now, we just copy BSP BIST
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# for all processor threads
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#
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xorl %ecx, %ecx
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movb %bl, %cl
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PushBist:
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movd %mm0, %eax
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pushl %eax
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loop PushBist
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# Save Time-Stamp Counter
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movd %mm5, %eax
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pushl %eax
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movd %mm6, %eax
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pushl %eax
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#
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# Pass entry point of the PEI core
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#
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movl $0xFFFFFFE0, %edi
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pushl %ds:(%edi)
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#
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# Pass BFV into the PEI Core
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#
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movl $0xFFFFFFFC, %edi
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pushl %ds:(%edi)
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#
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# Pass stack size into the PEI Core
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#
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movl -4(%ebp), %ecx
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movl -8(%ebp), %edx
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pushl %ecx # RamBase
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subl %ecx, %edx
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pushl %edx # RamSize
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#
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# Pass Control into the PEI Core
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#
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call ASM_PFX(SecStartup)
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