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
|
/** @file
SPI Host controller entry point for SMM
Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
#include <Library/UefiLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/MmServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/SpiHcPlatformLib.h>
#include <Protocol/SpiSmmHc.h>
#include <IndustryStandard/SpiNorFlashJedecSfdp.h>
#include "SpiHc.h"
EFI_HANDLE mSpiHcHandle = 0;
/**
Entry point of the SPI Host Controller driver. Installs the EFI_SPI_HC_PROTOCOL on mSpiHcHandle.
Also installs the EFI_DEVICE_PATH_PROTOCOL corresponding to the SPI Host controller on the same
mSpiHcHandle.
@param[in] ImageHandle Image handle of this driver.
@param[in] SystemTable Pointer to standard EFI system table.
@retval EFI_SUCCESS Succeed.
@retval EFI_OUT_RESOURCES If the system has run out of memory
**/
EFI_STATUS
EFIAPI
SpiHcProtocolEntry (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_SPI_HC_PROTOCOL *HcProtocol;
DEBUG ((DEBUG_VERBOSE, "%a - ENTRY\n", __func__));
// Allocate the SPI Host Controller protocol
HcProtocol = AllocateZeroPool (sizeof (EFI_SPI_HC_PROTOCOL));
ASSERT (HcProtocol != NULL);
if (HcProtocol == NULL) {
return EFI_OUT_OF_RESOURCES;
}
// Fill in the SPI Host Controller Protocol
Status = GetPlatformSpiHcDetails (
&HcProtocol->Attributes,
&HcProtocol->FrameSizeSupportMask,
&HcProtocol->MaximumTransferBytes
);
HcProtocol->ChipSelect = ChipSelect;
HcProtocol->Clock = Clock;
HcProtocol->Transaction = Transaction;
Status = gMmst->MmInstallProtocolInterface (
&mSpiHcHandle,
&gEfiSpiSmmHcProtocolGuid,
EFI_NATIVE_INTERFACE,
HcProtocol
);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_VERBOSE, "Error installing gEfiSpiSmmHcProtocolGuid\n"));
}
DEBUG ((DEBUG_VERBOSE, "%a - EXIT Status=%r\n", __func__, Status));
return Status;
}
|
