1 /******************************************************************************* 2 Copyright (C) 2016 Marvell International Ltd. 3 4 Marvell BSD License Option 5 6 If you received this File from Marvell, you may opt to use, redistribute and/or 7 modify this File under the following licensing terms. 8 Redistribution and use in source and binary forms, with or without modification, 9 are permitted provided that the following conditions are met: 10 11 * Redistributions of source code must retain the above copyright notice, 12 this list of conditions and the following disclaimer. 13 14 * Redistributions in binary form must reproduce the above copyright 15 notice, this list of conditions and the following disclaimer in the 16 documentation and/or other materials provided with the distribution. 17 18 * Neither the name of Marvell nor the names of its contributors may be 19 used to endorse or promote products derived from this software without 20 specific prior written permission. 21 22 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 23 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 26 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 29 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 31 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 33 *******************************************************************************/ 34 35 #include <Base.h> 36 #include <Library/ArmPlatformLib.h> 37 #include <Library/DebugLib.h> 38 #include <Library/MemoryAllocationLib.h> 39 40 // The total number of descriptors, including the final "end-of-table" descriptor. 41 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 16 42 43 // DDR attributes 44 #define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK 45 #define DDR_ATTRIBUTES_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED 46 47 /** 48 Return the Virtual Memory Map of your platform 49 50 This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform. 51 52 @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to- 53 Virtual Memory mapping. This array must be ended by a zero-filled 54 entry 55 56 **/ 57 VOID 58 ArmPlatformGetVirtualMemoryMap ( 59 IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap 60 ) 61 { 62 ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable; 63 UINTN Index = 0; 64 65 ASSERT (VirtualMemoryMap != NULL); 66 67 VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS)); 68 if (VirtualMemoryTable == NULL) { 69 return; 70 } 71 72 // DDR 73 VirtualMemoryTable[Index].PhysicalBase = PcdGet64 (PcdSystemMemoryBase); 74 VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdSystemMemoryBase); 75 VirtualMemoryTable[Index].Length = PcdGet64 (PcdSystemMemorySize); 76 VirtualMemoryTable[Index].Attributes = DDR_ATTRIBUTES_CACHED; 77 78 // Configuration space 0xF000_0000 - 0xFFFF_FFFF 79 VirtualMemoryTable[++Index].PhysicalBase = 0xF0000000; 80 VirtualMemoryTable[Index].VirtualBase = 0xF0000000; 81 VirtualMemoryTable[Index].Length = 0x10000000; 82 VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE; 83 84 // End of Table 85 VirtualMemoryTable[++Index].PhysicalBase = 0; 86 VirtualMemoryTable[Index].VirtualBase = 0; 87 VirtualMemoryTable[Index].Length = 0; 88 VirtualMemoryTable[Index].Attributes = 0; 89 90 ASSERT((Index + 1) <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS); 91 92 *VirtualMemoryMap = VirtualMemoryTable; 93 } 94
