1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/** @file
C Entry point for the SEC. First C code after the reset vector.
Copyright (c) 2008 - 2009, Apple Inc. 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.
**/
#include <PiPei.h>
#include <Ppi/TemporaryRamSupport.h>
#include <Library/PcdLib.h>
#include <Library/IoLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <ArmEb/ArmEb.h>
EFI_STATUS
EFIAPI
SecTemporaryRamSupport (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize
);
VOID
SecSwitchStack (
INTN StackDelta
);
TEMPORARY_RAM_SUPPORT_PPI mSecTemporaryRamSupportPpi = {SecTemporaryRamSupport};
EFI_PEI_PPI_DESCRIPTOR gSecPpiTable[] = {
{
EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
&gEfiTemporaryRamSupportPpiGuid,
&mSecTemporaryRamSupportPpi
}
};
VOID
EFIAPI
_ModuleEntryPoint(
VOID
);
VOID
CEntryPoint (
IN UINTN TempRamBase,
IN UINTN TempRamSize,
IN EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint
)
{
EFI_SEC_PEI_HAND_OFF SecCoreData;
// Turn off remapping NOR to 0. We can will now see DRAM in low memory (although it is not yet initialized)
// note: this makes SEC platform-specific for the EB platform
MmioOr32 (0x10001000 ,BIT8); //EB_SP810_CTRL_BASE
//
// Bind this information into the SEC hand-off state
// Note: this must be in sync with the stuff in the asm file
// Note also: HOBs (pei temp ram) MUST be above stack
//
SecCoreData.DataSize = sizeof(EFI_SEC_PEI_HAND_OFF);
SecCoreData.BootFirmwareVolumeBase = (VOID *)(UINTN)PcdGet32 (PcdEmbeddedFdBaseAddress);
SecCoreData.BootFirmwareVolumeSize = PcdGet32 (PcdEmbeddedFdSize);
SecCoreData.TemporaryRamBase = (VOID*)(UINTN)TempRamBase;
SecCoreData.TemporaryRamSize = TempRamSize;
SecCoreData.PeiTemporaryRamBase = (VOID *)(UINTN)(SecCoreData.TemporaryRamBase + (SecCoreData.TemporaryRamSize / 2));
SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize / 2;
SecCoreData.StackBase = (VOID *)(UINTN)(SecCoreData.TemporaryRamBase);
SecCoreData.StackSize = SecCoreData.TemporaryRamSize - SecCoreData.PeiTemporaryRamSize;
// jump to pei core entry point
(PeiCoreEntryPoint)(&SecCoreData, (VOID *)&gSecPpiTable);
}
EFI_STATUS
EFIAPI
SecTemporaryRamSupport (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize
)
{
//
// Migrate the whole temporary memory to permenent memory.
//
CopyMem (
(VOID*)(UINTN)PermanentMemoryBase,
(VOID*)(UINTN)TemporaryMemoryBase,
CopySize
);
SecSwitchStack((UINTN)(PermanentMemoryBase - TemporaryMemoryBase));
//
// We need *not* fix the return address because currently,
// The PeiCore is excuted in flash.
//
//
// Simulate to invalid temporary memory, terminate temporary memory
//
//ZeroMem ((VOID*)(UINTN)TemporaryMemoryBase, CopySize);
return EFI_SUCCESS;
}
|
