3 * Copyright (c) 2011, ARM Limited. All rights reserved.
5 * This program and the accompanying materials
6 * are licensed and made available under the terms and conditions of the BSD License
7 * which accompanies this distribution. The full text of the license may be found at
8 * http://opensource.org/licenses/bsd-license.php
10 * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #include <Library/ArmPlatformLib.h>
16 #include <Library/DebugLib.h>
17 #include <Library/PcdLib.h>
18 #include <Library/MemoryAllocationLib.h>
19 #include <Library/IoLib.h>
21 #include <ArmPlatform.h>
23 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 6
26 #define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
27 #define DDR_ATTRIBUTES_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
30 Return the Virtual Memory Map of your platform
32 This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
34 @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
35 Virtual Memory mapping. This array must be ended by a zero-filled
40 ArmPlatformGetVirtualMemoryMap (
41 IN ARM_MEMORY_REGION_DESCRIPTOR
** VirtualMemoryMap
44 UINT32 CacheAttributes
;
46 ARM_MEMORY_REGION_DESCRIPTOR
*VirtualMemoryTable
;
48 ASSERT(VirtualMemoryMap
!= NULL
);
50 VirtualMemoryTable
= (ARM_MEMORY_REGION_DESCRIPTOR
*)AllocatePages (EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR
) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
));
51 if (VirtualMemoryTable
== NULL
) {
55 if (FeaturePcdGet(PcdCacheEnable
) == TRUE
) {
56 CacheAttributes
= DDR_ATTRIBUTES_CACHED
;
58 CacheAttributes
= DDR_ATTRIBUTES_UNCACHED
;
61 // ReMap (Either NOR Flash or DRAM)
62 VirtualMemoryTable
[Index
].PhysicalBase
= ARM_EB_REMAP_BASE
;
63 VirtualMemoryTable
[Index
].VirtualBase
= ARM_EB_REMAP_BASE
;
64 VirtualMemoryTable
[Index
].Length
= ARM_EB_REMAP_SZ
;
65 VirtualMemoryTable
[Index
].Attributes
= (ARM_MEMORY_REGION_ATTRIBUTES
)CacheAttributes
;
68 VirtualMemoryTable
[++Index
].PhysicalBase
= PcdGet64 (PcdSystemMemoryBase
);
69 VirtualMemoryTable
[Index
].VirtualBase
= PcdGet64 (PcdSystemMemoryBase
);
70 VirtualMemoryTable
[Index
].Length
= PcdGet64 (PcdSystemMemorySize
);
71 VirtualMemoryTable
[Index
].Attributes
= (ARM_MEMORY_REGION_ATTRIBUTES
)CacheAttributes
;
74 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE
;
75 VirtualMemoryTable
[Index
].VirtualBase
= ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE
;
76 VirtualMemoryTable
[Index
].Length
= ARM_EB_SMB_MB_ON_CHIP_PERIPH_SZ
;
77 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
79 // SMB CS0-CS1 - NOR Flash 1 & 2
80 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_EB_SMB_NOR_BASE
;
81 VirtualMemoryTable
[Index
].VirtualBase
= ARM_EB_SMB_NOR_BASE
;
82 VirtualMemoryTable
[Index
].Length
= ARM_EB_SMB_NOR_SZ
+ ARM_EB_SMB_DOC_SZ
;
83 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
86 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_EB_SMB_SRAM_BASE
;
87 VirtualMemoryTable
[Index
].VirtualBase
= ARM_EB_SMB_SRAM_BASE
;
88 VirtualMemoryTable
[Index
].Length
= ARM_EB_SMB_SRAM_SZ
;
89 VirtualMemoryTable
[Index
].Attributes
= (ARM_MEMORY_REGION_ATTRIBUTES
)CacheAttributes
;
91 // SMB CS3-CS6 - Motherboard Peripherals
92 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_EB_SMB_PERIPH_BASE
;
93 VirtualMemoryTable
[Index
].VirtualBase
= ARM_EB_SMB_PERIPH_BASE
;
94 VirtualMemoryTable
[Index
].Length
= ARM_EB_SMB_PERIPH_SZ
;
95 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
97 // If a Logic Tile is connected to The ARM Versatile Express Motherboard
98 if (MmioRead32(ARM_EB_SYS_PROCID1_REG
) != 0) {
99 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_EB_LOGIC_TILE_BASE
;
100 VirtualMemoryTable
[Index
].VirtualBase
= ARM_EB_LOGIC_TILE_BASE
;
101 VirtualMemoryTable
[Index
].Length
= ARM_EB_LOGIC_TILE_SZ
;
102 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
104 ASSERT((Index
+ 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
+ 1));
106 ASSERT((Index
+ 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
);
110 VirtualMemoryTable
[++Index
].PhysicalBase
= 0;
111 VirtualMemoryTable
[Index
].VirtualBase
= 0;
112 VirtualMemoryTable
[Index
].Length
= 0;
113 VirtualMemoryTable
[Index
].Attributes
= (ARM_MEMORY_REGION_ATTRIBUTES
)0;
115 *VirtualMemoryMap
= VirtualMemoryTable
;