blob: c8de40d5c1654a86f0b72a4465f3d665b79a31ea (
plain)
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
|
/** @file
*
Memory Debug Log Library - PEI Core
Copyright (C) 2025, Oracle and/or its affiliates.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiPei.h>
#include <Library/PeiServicesLib.h>
#include <Library/MemDebugLogLib.h>
EFI_STATUS
EFIAPI
MemDebugLogWrite (
IN CHAR8 *Buffer,
IN UINTN Length
)
{
EFI_PHYSICAL_ADDRESS MemDebugLogBufAddr;
EFI_STATUS Status;
//
// Obtain the Memory Debug Log buffer addr from HOB
// NOTE: This is expected to fail until the HOB is created.
//
Status = MemDebugLogAddrFromHOB (&MemDebugLogBufAddr);
if (EFI_ERROR (Status)) {
MemDebugLogBufAddr = 0;
}
if (MemDebugLogBufAddr != 0) {
Status = MemDebugLogWriteBuffer (MemDebugLogBufAddr, Buffer, Length);
} else {
//
// HOB has not yet been created, so
// write to the early debug log buffer.
//
if (FixedPcdGet32 (PcdOvmfEarlyMemDebugLogBase) != 0x0) {
Status = MemDebugLogWriteBuffer (
(EFI_PHYSICAL_ADDRESS)(UINTN)FixedPcdGet32 (PcdOvmfEarlyMemDebugLogBase),
Buffer,
Length
);
} else {
Status = EFI_NOT_FOUND;
}
}
return Status;
}
|
