3 * Copyright (c) 2012, 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/HobLib.h>
18 #include <Library/IoLib.h>
19 #include <Library/MemoryAllocationLib.h>
20 #include <Library/PcdLib.h>
22 #include <ArmPlatform.h>
24 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 14
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 // Detect if it is a 1GB or 2GB Test Chip
63 // [16:19]: 0=1GB TC2, 1=2GB TC2
64 if (MmioRead32(ARM_VE_SYS_PROCID0_REG
) & (0xF << 16)) {
65 DEBUG((EFI_D_ERROR
,"Info: 2GB Test Chip 2 detected.\n"));
66 BuildResourceDescriptorHob (
67 EFI_RESOURCE_SYSTEM_MEMORY
,
68 EFI_RESOURCE_ATTRIBUTE_PRESENT
| EFI_RESOURCE_ATTRIBUTE_INITIALIZED
| EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE
|
69 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE
| EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE
| EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
|
70 EFI_RESOURCE_ATTRIBUTE_TESTED
,
71 PcdGet32 (PcdSystemMemoryBase
) + PcdGet32 (PcdSystemMemorySize
),
76 #ifdef ARM_BIGLITTLE_TC2
78 VirtualMemoryTable
[Index
].PhysicalBase
= ARM_VE_SEC_NOR0_BASE
;
79 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SEC_NOR0_BASE
;
80 VirtualMemoryTable
[Index
].Length
= ARM_VE_SEC_NOR0_SZ
;
81 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
83 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SEC_RAM0_BASE
;
84 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SEC_RAM0_BASE
;
85 VirtualMemoryTable
[Index
].Length
= ARM_VE_SEC_RAM0_SZ
;
86 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
89 // SMB CS0 - NOR0 Flash
90 VirtualMemoryTable
[Index
].PhysicalBase
= ARM_VE_SMB_NOR0_BASE
;
91 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_NOR0_BASE
;
92 VirtualMemoryTable
[Index
].Length
= SIZE_256KB
* 255;
93 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
94 // Environment Variables region
95 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_NOR0_BASE
+ (SIZE_256KB
* 255);
96 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_NOR0_BASE
+ (SIZE_256KB
* 255);
97 VirtualMemoryTable
[Index
].Length
= SIZE_64KB
* 4;
98 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
100 // SMB CS1 or CS4 - NOR1 Flash
101 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_NOR1_BASE
;
102 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_NOR1_BASE
;
103 VirtualMemoryTable
[Index
].Length
= SIZE_256KB
* 255;
104 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
105 // Environment Variables region
106 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_NOR1_BASE
+ (SIZE_256KB
* 255);
107 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_NOR1_BASE
+ (SIZE_256KB
* 255);
108 VirtualMemoryTable
[Index
].Length
= SIZE_64KB
* 4;
109 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
111 // SMB CS3 or CS1 - PSRAM
112 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_SRAM_BASE
;
113 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_SRAM_BASE
;
114 VirtualMemoryTable
[Index
].Length
= ARM_VE_SMB_SRAM_SZ
;
115 VirtualMemoryTable
[Index
].Attributes
= CacheAttributes
;
117 // Motherboard peripherals
118 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_SMB_PERIPH_BASE
;
119 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_SMB_PERIPH_BASE
;
120 VirtualMemoryTable
[Index
].Length
= ARM_VE_SMB_PERIPH_SZ
;
121 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
123 #ifdef ARM_BIGLITTLE_TC2
125 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_TC2_NON_SECURE_ROM_BASE
;
126 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_TC2_NON_SECURE_ROM_BASE
;
127 VirtualMemoryTable
[Index
].Length
= ARM_VE_TC2_NON_SECURE_ROM_SZ
;
128 VirtualMemoryTable
[Index
].Attributes
= CacheAttributes
;
131 // OnChip peripherals
132 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_ONCHIP_PERIPH_BASE
;
133 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_ONCHIP_PERIPH_BASE
;
134 VirtualMemoryTable
[Index
].Length
= ARM_VE_ONCHIP_PERIPH_SZ
;
135 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
138 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_CTA15A7_SCC_BASE
;
139 VirtualMemoryTable
[Index
].VirtualBase
= ARM_CTA15A7_SCC_BASE
;
140 VirtualMemoryTable
[Index
].Length
= SIZE_64KB
;
141 VirtualMemoryTable
[Index
].Attributes
= ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
;
143 #ifdef ARM_BIGLITTLE_TC2
144 // TC2 OnChip non-secure SRAM
145 VirtualMemoryTable
[++Index
].PhysicalBase
= ARM_VE_TC2_NON_SECURE_SRAM_BASE
;
146 VirtualMemoryTable
[Index
].VirtualBase
= ARM_VE_TC2_NON_SECURE_SRAM_BASE
;
147 VirtualMemoryTable
[Index
].Length
= ARM_VE_TC2_NON_SECURE_SRAM_SZ
;
148 VirtualMemoryTable
[Index
].Attributes
= CacheAttributes
;
151 #ifndef ARM_BIGLITTLE_TC2
152 // Workaround for SRAM bug in RTSM
153 if (PcdGet32 (PcdSystemMemoryBase
) != 0x80000000) {
154 VirtualMemoryTable
[++Index
].PhysicalBase
= 0x80000000;
155 VirtualMemoryTable
[Index
].VirtualBase
= 0x80000000;
156 VirtualMemoryTable
[Index
].Length
= PcdGet32 (PcdSystemMemoryBase
) - 0x80000000;
157 VirtualMemoryTable
[Index
].Attributes
= CacheAttributes
;
162 VirtualMemoryTable
[++Index
].PhysicalBase
= PcdGet32 (PcdSystemMemoryBase
);
163 VirtualMemoryTable
[Index
].VirtualBase
= PcdGet32 (PcdSystemMemoryBase
);
164 VirtualMemoryTable
[Index
].Length
= PcdGet32 (PcdSystemMemorySize
);
165 VirtualMemoryTable
[Index
].Attributes
= CacheAttributes
;
168 VirtualMemoryTable
[++Index
].PhysicalBase
= 0;
169 VirtualMemoryTable
[Index
].VirtualBase
= 0;
170 VirtualMemoryTable
[Index
].Length
= 0;
171 VirtualMemoryTable
[Index
].Attributes
= (ARM_MEMORY_REGION_ATTRIBUTES
)0;
173 ASSERT((Index
+ 1) <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
);
175 *VirtualMemoryMap
= VirtualMemoryTable
;