projects / mirror_edk2.git / blame
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|---|---|---|
| 496cf19a AB |
1 | /** @file\r |
| 2 | \r | |
| 3 | Copyright (c) 2014-2017, Linaro Limited. All rights reserved.\r | |
| 4 | \r | |
| 5 | This program and the accompanying materials are licensed and made available\r | |
| 6 | under the terms and conditions of the BSD License which accompanies this\r | |
| 7 | 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 <Base.h>\r | |
| 16 | #include <Library/ArmLib.h>\r | |
| 2f9b248a | 17 | #include <Library/BaseLib.h>\r |
| 496cf19a AB |
18 | #include <Library/DebugLib.h>\r |
| 19 | \r | |
| 20 | STATIC ARM_MEMORY_REGION_DESCRIPTOR mVirtualMemoryTable[2];\r | |
| 21 | \r | |
| 496cf19a AB |
22 | /**\r |
| 23 | Return the Virtual Memory Map of your platform\r | |
| 24 | \r | |
| 25 | This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU\r | |
| 26 | on your platform.\r | |
| 27 | \r | |
| 28 | @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR\r | |
| 29 | describing a Physical-to-Virtual Memory\r | |
| 30 | mapping. This array must be ended by a\r | |
| 31 | zero-filled entry. The allocated memory\r | |
| 32 | will not be freed.\r | |
| 33 | \r | |
| 34 | **/\r | |
| 35 | VOID\r | |
| 36 | EFIAPI\r | |
| 37 | ArmVirtGetMemoryMap (\r | |
| 38 | OUT ARM_MEMORY_REGION_DESCRIPTOR **VirtualMemoryMap\r | |
| 39 | )\r | |
| 40 | {\r | |
| 2f9b248a AB |
41 | EFI_PHYSICAL_ADDRESS TopOfAddressSpace;\r |
| 42 | \r | |
| 496cf19a AB |
43 | ASSERT (VirtualMemoryMap != NULL);\r |
| 44 | \r | |
| 2f9b248a AB |
45 | TopOfAddressSpace = LShiftU64 (1ULL, ArmGetPhysicalAddressBits ());\r |
| 46 | \r | |
| 496cf19a AB |
47 | //\r |
| 48 | // Map the entire physical memory space as cached. The only device\r | |
| 49 | // we care about is the GIC, which will be stage 2 mapped as a device\r | |
| 50 | // by the hypervisor, overriding the cached mapping we install here.\r | |
| 51 | //\r | |
| 52 | mVirtualMemoryTable[0].PhysicalBase = 0x0;\r | |
| 53 | mVirtualMemoryTable[0].VirtualBase = 0x0;\r | |
| 2f9b248a | 54 | mVirtualMemoryTable[0].Length = TopOfAddressSpace;\r |
| 496cf19a AB |
55 | mVirtualMemoryTable[0].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;\r |
| 56 | \r | |
| 57 | mVirtualMemoryTable[1].PhysicalBase = 0x0;\r | |
| 58 | mVirtualMemoryTable[1].VirtualBase = 0x0;\r | |
| 59 | mVirtualMemoryTable[1].Length = 0x0;\r | |
| 60 | mVirtualMemoryTable[1].Attributes = 0x0;\r | |
| 61 | \r | |
| 62 | *VirtualMemoryMap = mVirtualMemoryTable;\r | |
| 63 | }\r |