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/IoLib.h>
19 #include <Library/MemoryAllocationLib.h>
21 #include <ArmPlatform.h>
23 // Number of Virtual Memory Map Descriptors without a Logic Tile
24 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 6
27 #define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
28 #define DDR_ATTRIBUTES_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
31 Return the Virtual Memory Map of your platform
33 This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
35 @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
36 Virtual Memory mapping. This array must be ended by a zero-filled
41 ArmPlatformGetVirtualMemoryMap (
42 IN ARM_MEMORY_REGION_DESCRIPTOR
** VirtualMemoryMap
45 ARM_MEMORY_REGION_ATTRIBUTES CacheAttributes
;
47 ARM_MEMORY_REGION_DESCRIPTOR
*VirtualMemoryTable
;
49 ASSERT(VirtualMemoryMap
!= NULL
);
51 VirtualMemoryTable
= (ARM_MEMORY_REGION_DESCRIPTOR
*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR
) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
));
52 if (VirtualMemoryTable
== NULL
) {
56 if (FeaturePcdGet(PcdCacheEnable
) == TRUE
) {
57 CacheAttributes
= DDR_ATTRIBUTES_CACHED
;
59 CacheAttributes
= DDR_ATTRIBUTES_UNCACHED
;
62 if (FeaturePcdGet(PcdNorFlashRemapping
) == FALSE
) {
63 // ReMap (Either NOR Flash or DRAM)
64 VirtualMemoryTable
[Index
].PhysicalBase
= ARM_VE_REMAP_BASE
;
65 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_REMAP_BASE
;
66 VirtualMemoryTable
[Index
].Length
= ARM_VE_REMAP_SZ
;
67 VirtualMemoryTable
[Index
].Attributes
= CacheAttributes
;
71 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_DRAM_BASE
;
72 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_DRAM_BASE
;
73 VirtualMemoryTable
[Index
].Length
= ARM_VE_DRAM_SZ
;
74 VirtualMemoryTable
[Index
].Attributes
= CacheAttributes
;
77 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE
;
78 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE
;
79 VirtualMemoryTable
[Index
].Length
= ARM_VE_SMB_MB_ON_CHIP_PERIPH_SZ
;
80 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
82 // SMB CS0-CS1 - NOR Flash 1 & 2
83 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_NOR0_BASE
;
84 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_NOR0_BASE
;
85 VirtualMemoryTable
[Index
].Length
= ARM_VE_SMB_NOR0_SZ
+ ARM_VE_SMB_NOR1_SZ
;
86 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
89 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_SRAM_BASE
;
90 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_SRAM_BASE
;
91 VirtualMemoryTable
[Index
].Length
= ARM_VE_SMB_SRAM_SZ
;
92 VirtualMemoryTable
[Index
].Attributes
= CacheAttributes
;
94 // SMB CS3-CS6 - Motherboard Peripherals
95 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_PERIPH_BASE
;
96 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_PERIPH_BASE
;
97 VirtualMemoryTable
[Index
].Length
= ARM_VE_SMB_PERIPH_SZ
;
98 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
100 // If a Logic Tile is connected to The ARM Versatile Express Motherboard
101 if (MmioRead32(ARM_VE_SYS_PROCID1_REG
) != 0) {
102 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_EXT_AXI_BASE
;
103 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_EXT_AXI_BASE
;
104 VirtualMemoryTable
[Index
].Length
= ARM_VE_EXT_AXI_SZ
;
105 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
107 ASSERT((Index
+ 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
+ 1));
109 ASSERT((Index
+ 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
);
113 VirtualMemoryTable
[++Index
].PhysicalBase
= 0;
114 VirtualMemoryTable
[Index
].VirtualBase
= 0;
115 VirtualMemoryTable
[Index
].Length
= 0;
116 VirtualMemoryTable
[Index
].Attributes
= (ARM_MEMORY_REGION_ATTRIBUTES
)0;
118 *VirtualMemoryMap
= VirtualMemoryTable
;