diff options
Diffstat (limited to 'CorebootModulePkg/SecCore/Ia32/SecEntry.nasm')
-rw-r--r-- | CorebootModulePkg/SecCore/Ia32/SecEntry.nasm | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/CorebootModulePkg/SecCore/Ia32/SecEntry.nasm b/CorebootModulePkg/SecCore/Ia32/SecEntry.nasm new file mode 100644 index 0000000000..d3fab89045 --- /dev/null +++ b/CorebootModulePkg/SecCore/Ia32/SecEntry.nasm @@ -0,0 +1,72 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Abstract:
+;
+; Entry point for the coreboot UEFI payload.
+;
+;------------------------------------------------------------------------------
+
+SECTION .text
+
+; C Functions
+extern ASM_PFX(SecStartup)
+
+; Pcds
+extern ASM_PFX(PcdGet32 (PcdPayloadFdMemBase))
+
+;
+; SecCore Entry Point
+;
+; Processor is in flat protected mode
+;
+; @param[in] EAX Initial value of the EAX register (BIST: Built-in Self Test)
+; @param[in] DI 'BP': boot-strap processor, or 'AP': application processor
+; @param[in] EBP Pointer to the start of the Boot Firmware Volume
+;
+; @return None This routine does not return
+;
+global ASM_PFX(_ModuleEntryPoint)
+ASM_PFX(_ModuleEntryPoint):
+ ;
+ ; Disable all the interrupts
+ ;
+ cli
+ ;
+ ; Construct the temporary memory at 0x80000, length 0x10000
+ ;
+ mov esp, (BASE_512KB + SIZE_64KB)
+
+ ;
+ ; Pass BFV into the PEI Core
+ ;
+ push DWORD [ASM_PFX(PcdGet32 (PcdPayloadFdMemBase))]
+
+ ;
+ ; Pass stack base into the PEI Core
+ ;
+ push BASE_512KB
+
+ ;
+ ; Pass stack size into the PEI Core
+ ;
+ push SIZE_64KB
+
+ ;
+ ; Pass Control into the PEI Core
+ ;
+ call ASM_PFX(SecStartup)
+
+ ;
+ ; Should never return
+ ;
+ jmp $
+
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