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1 | ;------------------------------------------------------------------------------\r | |
2 | ;*\r | |
3 | ;* Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r | |
4 | ;* This program and the accompanying materials\r | |
5 | ;* are licensed and made available under the terms and conditions of the BSD License\r | |
6 | ;* which accompanies this distribution. The full text of the license may be found at\r | |
7 | ;* http://opensource.org/licenses/bsd-license.php\r | |
8 | ;*\r | |
9 | ;* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | ;* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | ;*\r | |
12 | ;* CpuAsm.asm\r | |
13 | ;*\r | |
14 | ;* Abstract:\r | |
15 | ;*\r | |
16 | ;------------------------------------------------------------------------------\r | |
17 | \r | |
18 | #include <Base.h>\r | |
19 | \r | |
20 | DEFAULT REL\r | |
21 | SECTION .text\r | |
22 | \r | |
23 | extern ASM_PFX(SecCoreStartupWithStack)\r | |
24 | \r | |
25 | ;\r | |
26 | ; SecCore Entry Point\r | |
27 | ;\r | |
28 | ; Processor is in flat protected mode\r | |
29 | ;\r | |
30 | ; @param[in] RAX Initial value of the EAX register (BIST: Built-in Self Test)\r | |
31 | ; @param[in] DI 'BP': boot-strap processor, or 'AP': application processor\r | |
32 | ; @param[in] RBP Pointer to the start of the Boot Firmware Volume\r | |
33 | ; @param[in] DS Selector allowing flat access to all addresses\r | |
34 | ; @param[in] ES Selector allowing flat access to all addresses\r | |
35 | ; @param[in] FS Selector allowing flat access to all addresses\r | |
36 | ; @param[in] GS Selector allowing flat access to all addresses\r | |
37 | ; @param[in] SS Selector allowing flat access to all addresses\r | |
38 | ;\r | |
39 | ; @return None This routine does not return\r | |
40 | ;\r | |
41 | global ASM_PFX(_ModuleEntryPoint)\r | |
42 | ASM_PFX(_ModuleEntryPoint):\r | |
43 | \r | |
44 | ;\r | |
45 | ; Fill the temporary RAM with the initial stack value.\r | |
46 | ; The loop below will seed the heap as well, but that's harmless.\r | |
47 | ;\r | |
48 | mov rax, (FixedPcdGet32 ( \\r | |
49 | PcdInitValueInTempStack \\r | |
50 | ) << 32) | \\r | |
51 | FixedPcdGet32 (PcdInitValueInTempStack) ; qword to store\r | |
52 | mov rdi, FixedPcdGet32 (PcdOvmfSecPeiTempRamBase) ; base address,\r | |
53 | ; relative to\r | |
54 | ; ES\r | |
55 | mov rcx, FixedPcdGet32 (PcdOvmfSecPeiTempRamSize) / 8 ; qword count\r | |
56 | cld ; store from base\r | |
57 | ; up\r | |
58 | rep stosq\r | |
59 | \r | |
60 | ;\r | |
61 | ; Load temporary RAM stack based on PCDs\r | |
62 | ;\r | |
63 | %define SEC_TOP_OF_STACK (FixedPcdGet32 (PcdOvmfSecPeiTempRamBase) + \\r | |
64 | FixedPcdGet32 (PcdOvmfSecPeiTempRamSize))\r | |
65 | mov rsp, SEC_TOP_OF_STACK\r | |
66 | nop\r | |
67 | \r | |
68 | ;\r | |
69 | ; Setup parameters and call SecCoreStartupWithStack\r | |
70 | ; rcx: BootFirmwareVolumePtr\r | |
71 | ; rdx: TopOfCurrentStack\r | |
72 | ;\r | |
73 | mov rcx, rbp\r | |
74 | mov rdx, rsp\r | |
75 | sub rsp, 0x20\r | |
76 | call ASM_PFX(SecCoreStartupWithStack)\r | |
77 | \r |