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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
/** @file
Copyright (c) 2013-2015, ARM Ltd. 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 "ArmVExpressInternal.h"
#include <PiDxe.h>
#include <Library/BaseMemoryLib.h>
#include <Library/VirtioMmioDeviceLib.h>
#include <Library/ArmShellCmdLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DevicePathLib.h>
#include <Protocol/FirmwareVolume2.h>
#define ARM_FVP_BASE_VIRTIO_BLOCK_BASE 0x1c130000
STATIC CONST CHAR16 *mFdtFallbackName = L"fdt.dtb";
#pragma pack(1)
typedef struct {
VENDOR_DEVICE_PATH Vendor;
EFI_DEVICE_PATH_PROTOCOL End;
} VIRTIO_BLK_DEVICE_PATH;
#pragma pack()
VIRTIO_BLK_DEVICE_PATH mVirtioBlockDevicePath =
{
{
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
{
(UINT8)( sizeof(VENDOR_DEVICE_PATH) ),
(UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8)
}
},
EFI_CALLER_ID_GUID,
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
sizeof (EFI_DEVICE_PATH_PROTOCOL),
0
}
}
};
STATIC
EFI_STATUS
InternalFindFdtByGuid (
IN OUT EFI_DEVICE_PATH **FdtDevicePath,
IN CONST EFI_GUID *FdtGuid
)
{
MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FileDevicePath;
EFI_HANDLE *HandleBuffer;
UINTN HandleCount;
UINTN Index;
EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol;
EFI_GUID NameGuid;
UINTN Size;
VOID *Key;
EFI_FV_FILETYPE FileType;
EFI_FV_FILE_ATTRIBUTES Attributes;
EFI_DEVICE_PATH *FvDevicePath;
EFI_STATUS Status;
if (FdtGuid == NULL) {
return EFI_NOT_FOUND;
}
EfiInitializeFwVolDevicepathNode (&FileDevicePath, FdtGuid);
HandleBuffer = NULL;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiFirmwareVolume2ProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
if (EFI_ERROR (Status)) {
return Status;
}
for (Index = 0; Index < HandleCount; Index++) {
Status = gBS->HandleProtocol (
HandleBuffer[Index],
&gEfiFirmwareVolume2ProtocolGuid,
(VOID **) &FvProtocol
);
if (EFI_ERROR (Status)) {
return Status;
}
// Allocate Key
Key = AllocatePool (FvProtocol->KeySize);
ASSERT (Key != NULL);
ZeroMem (Key, FvProtocol->KeySize);
do {
FileType = EFI_FV_FILETYPE_RAW;
Status = FvProtocol->GetNextFile (FvProtocol, Key, &FileType, &NameGuid, &Attributes, &Size);
if (Status == EFI_NOT_FOUND) {
break;
}
if (EFI_ERROR (Status)) {
return Status;
}
//
// Check whether this file is the one we are looking for. If so,
// create a device path for it and return it to the caller.
//
if (CompareGuid (&NameGuid, FdtGuid)) {
Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID **)&FvDevicePath);
if (!EFI_ERROR (Status)) {
*FdtDevicePath = AppendDevicePathNode (FvDevicePath,
(EFI_DEVICE_PATH_PROTOCOL *)&FileDevicePath);
}
goto Done;
}
} while (TRUE);
FreePool (Key);
}
if (Index == HandleCount) {
Status = EFI_NOT_FOUND;
}
return Status;
Done:
FreePool (Key);
return Status;
}
/**
* Generic UEFI Entrypoint for 'ArmFvpDxe' driver
* See UEFI specification for the details of the parameters
*/
EFI_STATUS
EFIAPI
ArmFvpInitialise (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
CONST ARM_VEXPRESS_PLATFORM *Platform;
BOOLEAN NeedFallback;
UINTN TextDevicePathBaseSize;
UINTN TextDevicePathSize;
CHAR16 *TextDevicePath;
VOID *Buffer;
EFI_DEVICE_PATH *FdtDevicePath;
Status = gBS->InstallProtocolInterface (
&ImageHandle,
&gEfiDevicePathProtocolGuid, EFI_NATIVE_INTERFACE,
&mVirtioBlockDevicePath
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = ArmVExpressGetPlatform (&Platform);
if (!EFI_ERROR (Status)) {
FdtDevicePath = NULL;
Status = InternalFindFdtByGuid (&FdtDevicePath, Platform->FdtGuid);
if (!EFI_ERROR (Status)) {
TextDevicePath = ConvertDevicePathToText (FdtDevicePath, FALSE, FALSE);
if (TextDevicePath != NULL) {
TextDevicePathSize = StrSize (TextDevicePath);
}
FreePool (FdtDevicePath);
} else {
//
// In the case of the FVP base and foundation platforms, two default
// text device paths for the FDT are defined. The first one, like every
// other platform, ends with a file name that identifies the platform. The
// second one ends with the fallback file name "fdt.dtb" for historical
// backward compatibility reasons.
//
NeedFallback = (Platform->Id == ARM_FVP_BASE) ||
(Platform->Id == ARM_FVP_FOUNDATION);
TextDevicePathBaseSize = StrSize ((CHAR16*)PcdGetPtr (PcdFvpFdtDevicePathsBase)) - sizeof (CHAR16);
TextDevicePathSize = TextDevicePathBaseSize + StrSize (Platform->FdtName);
if (NeedFallback) {
TextDevicePathSize += TextDevicePathBaseSize + StrSize (mFdtFallbackName);
}
TextDevicePath = AllocatePool (TextDevicePathSize);
if (TextDevicePath != NULL) {
StrCpy (TextDevicePath, ((CHAR16*)PcdGetPtr (PcdFvpFdtDevicePathsBase)));
StrCat (TextDevicePath, Platform->FdtName);
if (NeedFallback) {
StrCat (TextDevicePath, L";");
StrCat (TextDevicePath, ((CHAR16*)PcdGetPtr (PcdFvpFdtDevicePathsBase)));
StrCat (TextDevicePath, mFdtFallbackName);
}
}
}
if (TextDevicePath != NULL) {
Buffer = PcdSetPtr (PcdFdtDevicePaths, &TextDevicePathSize, TextDevicePath);
if (Buffer == NULL) {
DEBUG ((
EFI_D_ERROR,
"ArmFvpDxe: Setting of FDT device path in PcdFdtDevicePaths failed - %r\n", EFI_BUFFER_TOO_SMALL
));
}
FreePool (TextDevicePath);
} else {
DEBUG ((
EFI_D_ERROR,
"ArmFvpDxe: Setting of FDT device path in PcdFdtDevicePaths failed - %r\n", EFI_OUT_OF_RESOURCES
));
}
}
// Declare the Virtio BlockIo device
Status = VirtioMmioInstallDevice (ARM_FVP_BASE_VIRTIO_BLOCK_BASE, ImageHandle);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "ArmFvpDxe: Failed to install Virtio block device\n"));
}
// Install dynamic Shell command to run baremetal binaries.
Status = ShellDynCmdRunAxfInstall (ImageHandle);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "ArmFvpDxe: Failed to install ShellDynCmdRunAxf\n"));
}
return Status;
}
|