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1 | /** @file\r | |
2 | Platform Flash Access library.\r | |
3 | \r | |
4 | Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <PiDxe.h>\r | |
16 | \r | |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/BaseMemoryLib.h>\r | |
19 | #include <Library/DebugLib.h>\r | |
20 | #include <Library/PcdLib.h>\r | |
21 | #include <Library/PlatformFlashAccessLib.h>\r | |
22 | #include <Library/FlashDeviceLib.h>\r | |
23 | #include <Library/MemoryAllocationLib.h>\r | |
24 | \r | |
25 | #define SECTOR_SIZE_64KB 0x10000 // Common 64kBytes sector size\r | |
26 | #define ALINGED_SIZE SECTOR_SIZE_64KB\r | |
27 | \r | |
28 | STATIC EFI_PHYSICAL_ADDRESS mInternalFdAddress;\r | |
29 | \r | |
30 | /**\r | |
31 | Perform flash write opreation.\r | |
32 | \r | |
33 | @param[in] FirmwareType The type of firmware.\r | |
34 | @param[in] FlashAddress The address of flash device to be accessed.\r | |
35 | @param[in] FlashAddressType The type of flash device address.\r | |
36 | @param[in] Buffer The pointer to the data buffer.\r | |
37 | @param[in] Length The length of data buffer in bytes.\r | |
38 | \r | |
39 | @retval EFI_SUCCESS The operation returns successfully.\r | |
40 | @retval EFI_WRITE_PROTECTED The flash device is read only.\r | |
41 | @retval EFI_UNSUPPORTED The flash device access is unsupported.\r | |
42 | @retval EFI_INVALID_PARAMETER The input parameter is not valid.\r | |
43 | **/\r | |
44 | EFI_STATUS\r | |
45 | EFIAPI\r | |
46 | PerformFlashWrite (\r | |
47 | IN PLATFORM_FIRMWARE_TYPE FirmwareType,\r | |
48 | IN EFI_PHYSICAL_ADDRESS FlashAddress,\r | |
49 | IN FLASH_ADDRESS_TYPE FlashAddressType,\r | |
50 | IN VOID *Buffer,\r | |
51 | IN UINTN Length\r | |
52 | )\r | |
53 | {\r | |
54 | EFI_STATUS Status;\r | |
55 | \r | |
56 | DEBUG((DEBUG_INFO, "PerformFlashWrite - 0x%x(%x) - 0x%x\n", (UINTN)FlashAddress, (UINTN)FlashAddressType, Length));\r | |
57 | if (FlashAddressType == FlashAddressTypeRelativeAddress) {\r | |
58 | FlashAddress = FlashAddress + mInternalFdAddress;\r | |
59 | }\r | |
60 | \r | |
61 | DEBUG((DEBUG_INFO, " - 0x%x(%x) - 0x%x\n", (UINTN)FlashAddress, (UINTN)FlashAddressType, Length));\r | |
62 | LibFvbFlashDeviceBlockLock(FlashAddress, Length, FALSE);\r | |
63 | \r | |
64 | //\r | |
65 | // Erase & Write\r | |
66 | //\r | |
67 | Status = LibFvbFlashDeviceBlockErase((UINTN)FlashAddress, Length);\r | |
68 | ASSERT_EFI_ERROR(Status);\r | |
69 | if (EFI_ERROR(Status)) {\r | |
70 | LibFvbFlashDeviceBlockLock(FlashAddress, Length, TRUE);\r | |
71 | DEBUG((DEBUG_ERROR, "Flash Erase error\n"));\r | |
72 | return Status;\r | |
73 | }\r | |
74 | \r | |
75 | Status = LibFvbFlashDeviceWrite((UINTN)FlashAddress, &Length, Buffer);\r | |
76 | ASSERT_EFI_ERROR(Status);\r | |
77 | if (EFI_ERROR(Status)) {\r | |
78 | LibFvbFlashDeviceBlockLock(FlashAddress, Length, TRUE);\r | |
79 | DEBUG((DEBUG_ERROR, "Flash write error\n"));\r | |
80 | return Status;\r | |
81 | }\r | |
82 | \r | |
83 | LibFvbFlashDeviceBlockLock(FlashAddress, Length, TRUE);\r | |
84 | \r | |
85 | return EFI_SUCCESS;\r | |
86 | }\r | |
87 | \r | |
88 | /**\r | |
89 | Perform microcode write opreation.\r | |
90 | \r | |
91 | @param[in] FlashAddress The address of flash device to be accessed.\r | |
92 | @param[in] Buffer The pointer to the data buffer.\r | |
93 | @param[in] Length The length of data buffer in bytes.\r | |
94 | \r | |
95 | @retval EFI_SUCCESS The operation returns successfully.\r | |
96 | @retval EFI_WRITE_PROTECTED The flash device is read only.\r | |
97 | @retval EFI_UNSUPPORTED The flash device access is unsupported.\r | |
98 | @retval EFI_INVALID_PARAMETER The input parameter is not valid.\r | |
99 | **/\r | |
100 | EFI_STATUS\r | |
101 | EFIAPI\r | |
102 | MicrocodeFlashWrite (\r | |
103 | IN EFI_PHYSICAL_ADDRESS FlashAddress,\r | |
104 | IN VOID *Buffer,\r | |
105 | IN UINTN Length\r | |
106 | )\r | |
107 | {\r | |
108 | EFI_PHYSICAL_ADDRESS AlignedFlashAddress;\r | |
109 | VOID *AlignedBuffer;\r | |
110 | UINTN AlignedLength;\r | |
111 | UINTN OffsetHead;\r | |
112 | UINTN OffsetTail;\r | |
113 | EFI_STATUS Status;\r | |
114 | \r | |
115 | DEBUG((DEBUG_INFO, "MicrocodeFlashWrite - 0x%x - 0x%x\n", (UINTN)FlashAddress, Length));\r | |
116 | \r | |
117 | //\r | |
118 | // Need make buffer 64K aligned to support ERASE\r | |
119 | //\r | |
120 | // [Aligned] FlashAddress [Aligned]\r | |
121 | // | | |\r | |
122 | // V V V\r | |
123 | // +--------------+========+------------+\r | |
124 | // | OffsetHeader | Length | OffsetTail |\r | |
125 | // +--------------+========+------------+\r | |
126 | // ^\r | |
127 | // |<-----------AlignedLength----------->\r | |
128 | // |\r | |
129 | // AlignedFlashAddress\r | |
130 | //\r | |
131 | OffsetHead = FlashAddress & (ALINGED_SIZE - 1);\r | |
132 | OffsetTail = (FlashAddress + Length) & (ALINGED_SIZE - 1);\r | |
133 | if (OffsetTail != 0) {\r | |
134 | OffsetTail = ALINGED_SIZE - OffsetTail;\r | |
135 | }\r | |
136 | \r | |
137 | if ((OffsetHead != 0) || (OffsetTail != 0)) {\r | |
138 | AlignedFlashAddress = FlashAddress - OffsetHead;\r | |
139 | AlignedLength = Length + OffsetHead + OffsetTail;\r | |
140 | \r | |
141 | AlignedBuffer = AllocatePool(AlignedLength);\r | |
142 | if (AlignedBuffer == NULL) {\r | |
143 | return EFI_OUT_OF_RESOURCES;\r | |
144 | }\r | |
145 | //\r | |
146 | // Save original buffer\r | |
147 | //\r | |
148 | if (OffsetHead != 0) {\r | |
149 | CopyMem((UINT8 *)AlignedBuffer, (VOID *)AlignedFlashAddress, OffsetHead);\r | |
150 | }\r | |
151 | if (OffsetTail != 0) {\r | |
152 | CopyMem((UINT8 *)AlignedBuffer + OffsetHead + Length, (VOID *)(AlignedFlashAddress + OffsetHead + Length), OffsetTail);\r | |
153 | }\r | |
154 | //\r | |
155 | // Override new buffer\r | |
156 | //\r | |
157 | CopyMem((UINT8 *)AlignedBuffer + OffsetHead, Buffer, Length);\r | |
158 | } else {\r | |
159 | AlignedFlashAddress = FlashAddress;\r | |
160 | AlignedBuffer = Buffer;\r | |
161 | AlignedLength = Length;\r | |
162 | }\r | |
163 | \r | |
164 | Status = PerformFlashWrite(\r | |
165 | PlatformFirmwareTypeSystemFirmware,\r | |
166 | AlignedFlashAddress,\r | |
167 | FlashAddressTypeAbsoluteAddress,\r | |
168 | AlignedBuffer,\r | |
169 | AlignedLength\r | |
170 | );\r | |
171 | if ((OffsetHead != 0) || (OffsetTail != 0)) {\r | |
172 | FreePool (AlignedBuffer);\r | |
173 | }\r | |
174 | return Status;\r | |
175 | }\r | |
176 | \r | |
177 | /**\r | |
178 | Platform Flash Access Lib Constructor.\r | |
179 | **/\r | |
180 | EFI_STATUS\r | |
181 | EFIAPI\r | |
182 | PerformFlashAccessLibConstructor (\r | |
183 | VOID\r | |
184 | )\r | |
185 | {\r | |
186 | mInternalFdAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)PcdGet32(PcdFlashAreaBaseAddress);\r | |
187 | DEBUG((DEBUG_INFO, "PcdFlashAreaBaseAddress - 0x%x\n", mInternalFdAddress));\r | |
188 | \r | |
189 | return EFI_SUCCESS;\r | |
190 | }\r |