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
= PcdGet32 (PcdSystemMemoryBase
);
69 VirtualMemoryTable
[Index
].VirtualBase
= PcdGet32 (PcdSystemMemoryBase
);
70 VirtualMemoryTable
[Index
].Length
= PcdGet32 (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
;
119 Return the EFI Memory Map of your platform
121 This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
122 Descriptor HOBs used by DXE core.
124 @param[out] EfiMemoryMap Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
125 EFI Memory region. This array must be ended by a zero-filled entry
129 ArmPlatformGetAdditionalSystemMemory (
130 OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR
** EfiMemoryMap
133 return EFI_UNSUPPORTED
;