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
;
122 Return the EFI Memory Map provided by extension memory on your platform
124 This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
125 Descriptor HOBs used by DXE core.
127 @param[out] EfiMemoryMap Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
128 EFI Memory region. This array must be ended by a zero-filled entry
132 ArmPlatformGetAdditionalSystemMemory (
133 OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR
** EfiMemoryMap
136 return EFI_UNSUPPORTED
;