Pkg-Module: CorebootModulePkg

[mirror_edk2.git] / CorebootModulePkg / SecCore / Ia32 / SecEntry.asm

diff --git a/CorebootModulePkg/SecCore/Ia32/SecEntry.asm b/CorebootModulePkg/SecCore/Ia32/SecEntry.asm
new file mode 100644 (file)
index 0000000..e3c2eac
--- /dev/null
+++ b/CorebootModulePkg/SecCore/Ia32/SecEntry.asm
@@ -0,0 +1,78 @@
+;------------------------------------------------------------------------------\r
+;\r
+; Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>\r
+; This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution.  The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php.\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+; Module Name:\r
+;\r
+;  SecEntry.asm\r
+;\r
+; Abstract:\r
+;\r
+;  This is the code that begins in protected mode.\r
+;  It will transfer the control to pei core.\r
+;\r
+;------------------------------------------------------------------------------\r
+#include <Base.h>\r
+\r
+.686p\r
+.xmm\r
+.model small, c\r
+\r
+EXTRN   SecStartup:NEAR\r
+\r
+; Pcds\r
+EXTRN   PcdGet32 (PcdPayloadFdMemBase):DWORD\r
+\r
+    .code\r
+\r
+;\r
+; SecCore Entry Point\r
+;\r
+; Processor is in flat protected mode\r
+;\r
+; @param[in]  EAX   Initial value of the EAX register (BIST: Built-in Self Test)\r
+; @param[in]  DI    'BP': boot-strap processor, or 'AP': application processor\r
+; @param[in]  EBP   Pointer to the start of the Boot Firmware Volume\r
+;\r
+; @return     None  This routine does not return\r
+;\r
+\r
+_ModuleEntryPoint   PROC PUBLIC \r
+  ;\r
+  ; Disable all the interrupts\r
+  ;   \r
+  cli\r
+  ;\r
+  ; Construct the temporary memory at 0x80000, length 0x10000\r
+  ;\r
+  mov  esp, (BASE_512KB + SIZE_64KB)\r
+  \r
+  ;\r
+  ; Pass BFV into the PEI Core\r
+  ;\r
+  push    PcdGet32 (PcdPayloadFdMemBase)\r
+\r
+  ;\r
+  ; Pass stack base into the PEI Core\r
+  ;\r
+  push    BASE_512KB\r
+\r
+  ;\r
+  ; Pass stack size into the PEI Core\r
+  ;\r
+  push    SIZE_64KB\r
+\r
+  ;\r
+  ; Pass Control into the PEI Core\r
+  ;\r
+  call SecStartup\r
+_ModuleEntryPoint   ENDP\r
+\r
+END\r