1 /**************************************************************************//**
3 * @brief MMU Configuration for Arm Cortex-A Device Series
5 * @date 10. January 2018
9 ******************************************************************************/
11 * Copyright (c) 2009-2018 Arm Limited. All rights reserved.
13 * SPDX-License-Identifier: Apache-2.0
15 * Licensed under the Apache License, Version 2.0 (the License); you may
16 * not use this file except in compliance with the License.
17 * You may obtain a copy of the License at
19 * www.apache.org/licenses/LICENSE-2.0
21 * Unless required by applicable law or agreed to in writing, software
22 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
23 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
24 * See the License for the specific language governing permissions and
25 * limitations under the License.
28 /* Memory map description from: DUI0447G_v2m_p1_trm.pdf 4.2.2 Arm Cortex-A Series memory map
31 0xffffffff |--------------------------| ------------
32 | FLAG SYNC | Device Memory
33 0xfffff000 |--------------------------| ------------
35 0xfff00000 |--------------------------| ------------
41 0x80505000 |--------------------------| ------------
42 |TTB (L2 Sync Flags ) 4k | Normal
43 0x80504C00 |--------------------------| ------------
44 |TTB (L2 Peripherals-B) 16k| Normal
45 0x80504800 |--------------------------| ------------
46 |TTB (L2 Peripherals-A) 16k| Normal
47 0x80504400 |--------------------------| ------------
48 |TTB (L2 Priv Periphs) 4k | Normal
49 0x80504000 |--------------------------| ------------
50 | TTB (L1 Descriptors) | Normal
51 0x80500000 |--------------------------| ------------
53 |--------------------------| ------------
55 0x80400000 |--------------------------| ------------
57 0x80300000 |--------------------------| ------------
59 0x80200000 |--------------------------| ------------
61 |--------------------------| ------------
62 | RO Code | USH Normal
63 0x80000000 |--------------------------| ------------
64 | Daughterboard | Fault
66 0x40000000 |--------------------------| ------------
67 | Daughterboard | Fault
68 | test chips peripherals |
69 0x2c002000 |--------------------------| ------------
70 | Private Address | Device Memory
71 0x2c000000 |--------------------------| ------------
72 | Daughterboard | Fault
73 | test chips peripherals |
74 0x20000000 |--------------------------| ------------
75 | Peripherals | Device Memory RW/RO
77 0x00000000 |--------------------------|
80 // L1 Cache info and restrictions about architecture of the caches (CCSIR register):
81 // Write-Through support *not* available
82 // Write-Back support available.
83 // Read allocation support available.
84 // Write allocation support available.
86 //Note: You should use the Shareable attribute carefully.
87 //For cores without coherency logic (such as SCU) marking a region as shareable forces the processor to not cache that region regardless of the inner cache settings.
88 //Cortex-A versions of RTX use LDREX/STREX instructions relying on Local monitors. Local monitors will be used only when the region gets cached, regions that are not cached will use the Global Monitor.
89 //Some Cortex-A implementations do not include Global Monitors, so wrongly setting the attribute Shareable may cause STREX to fail.
91 //Recall: When the Shareable attribute is applied to a memory region that is not Write-Back, Normal memory, data held in this region is treated as Non-cacheable.
92 //When SMP bit = 0, Inner WB/WA Cacheable Shareable attributes are treated as Non-cacheable.
93 //When SMP bit = 1, Inner WB/WA Cacheable Shareable attributes are treated as Cacheable.
96 //Following MMU configuration is expected
97 //SCTLR.AFE == 1 (Simplified access permissions model - AP[2:1] define access permissions, AP[0] is an access flag)
98 //SCTLR.TRE == 0 (TEX remap disabled, so memory type and attributes are described directly by bits in the descriptor)
99 //Domain 0 is always the Client domain
100 //Descriptors should place all memory in domain 0
102 #include "RTE_Components.h"
103 #include CMSIS_device_header
106 #define VE_MP_FLASH_BASE0 VE_A5_MP_FLASH_BASE0
107 #define VE_MP_FLASH_BASE1 VE_A5_MP_FLASH_BASE1
108 #define VE_MP_PERIPH_BASE VE_A5_MP_PERIPH_BASE
109 #define VE_MP_SRAM_BASE VE_A5_MP_SRAM_BASE
110 #define VE_MP_DRAM_BASE VE_A5_MP_DRAM_BASE
111 #define VE_MP_VRAM_BASE VE_A5_MP_VRAM_BASE
112 #define VE_MP_ETHERNET_BASE VE_A5_MP_ETHERNET_BASE
113 #define VE_MP_USB_BASE VE_A5_MP_USB_BASE
114 #define VE_MP_DAP_BASE VE_A5_MP_DAP_BASE
115 #define VE_MP_SYSTEM_REG_BASE VE_A5_MP_SYSTEM_REG_BASE
116 #define VE_MP_SERIAL_BASE VE_A5_MP_SERIAL_BASE
117 #define VE_MP_AACI_BASE VE_A5_MP_AACI_BASE
118 #define VE_MP_MMCI_BASE VE_A5_MP_MMCI_BASE
119 #define VE_MP_KMI0_BASE VE_A5_MP_KMI0_BASE
120 #define VE_MP_UART_BASE VE_A5_MP_UART_BASE
121 #define VE_MP_WDT_BASE VE_A5_MP_WDT_BASE
122 #define VE_MP_TIMER_BASE VE_A5_MP_TIMER_BASE
123 #define VE_MP_DVI_BASE VE_A5_MP_DVI_BASE
124 #define VE_MP_RTC_BASE VE_A5_MP_RTC_BASE
125 #define VE_MP_UART4_BASE VE_A5_MP_UART4_BASE
126 #define VE_MP_CLCD_BASE VE_A5_MP_CLCD_BASE
127 #define VE_MP_GIC_DISTRIBUTOR_BASE VE_A5_MP_GIC_DISTRIBUTOR_BASE
128 #define VE_MP_GIC_INTERFACE_BASE VE_A5_MP_GIC_INTERFACE_BASE
129 #define VE_MP_PRIVATE_TIMER VE_A5_MP_PRIVATE_TIMER
130 #elif __CORTEX_A == 7
131 #define VE_MP_FLASH_BASE0 VE_A7_MP_FLASH_BASE0
132 #define VE_MP_FLASH_BASE1 VE_A7_MP_FLASH_BASE1
133 #define VE_MP_PERIPH_BASE VE_A7_MP_PERIPH_BASE
134 #define VE_MP_SRAM_BASE VE_A7_MP_SRAM_BASE
135 #define VE_MP_DRAM_BASE VE_A7_MP_DRAM_BASE
136 #define VE_MP_VRAM_BASE VE_A7_MP_VRAM_BASE
137 #define VE_MP_ETHERNET_BASE VE_A7_MP_ETHERNET_BASE
138 #define VE_MP_USB_BASE VE_A7_MP_USB_BASE
139 #define VE_MP_DAP_BASE VE_A7_MP_DAP_BASE
140 #define VE_MP_SYSTEM_REG_BASE VE_A7_MP_SYSTEM_REG_BASE
141 #define VE_MP_SERIAL_BASE VE_A7_MP_SERIAL_BASE
142 #define VE_MP_AACI_BASE VE_A7_MP_AACI_BASE
143 #define VE_MP_MMCI_BASE VE_A7_MP_MMCI_BASE
144 #define VE_MP_KMI0_BASE VE_A7_MP_KMI0_BASE
145 #define VE_MP_UART_BASE VE_A7_MP_UART_BASE
146 #define VE_MP_WDT_BASE VE_A7_MP_WDT_BASE
147 #define VE_MP_TIMER_BASE VE_A7_MP_TIMER_BASE
148 #define VE_MP_DVI_BASE VE_A7_MP_DVI_BASE
149 #define VE_MP_RTC_BASE VE_A7_MP_RTC_BASE
150 #define VE_MP_UART4_BASE VE_A7_MP_UART4_BASE
151 #define VE_MP_CLCD_BASE VE_A7_MP_CLCD_BASE
152 #define VE_MP_GIC_DISTRIBUTOR_BASE VE_A7_MP_GIC_DISTRIBUTOR_BASE
153 #define VE_MP_GIC_INTERFACE_BASE VE_A7_MP_GIC_INTERFACE_BASE
154 #define VE_MP_PRIVATE_TIMER VE_A7_MP_PRIVATE_TIMER
155 #elif __CORTEX_A == 9
156 #define VE_MP_FLASH_BASE0 VE_A9_MP_FLASH_BASE0
157 #define VE_MP_FLASH_BASE1 VE_A9_MP_FLASH_BASE1
158 #define VE_MP_PERIPH_BASE VE_A9_MP_PERIPH_BASE
159 #define VE_MP_SRAM_BASE VE_A9_MP_SRAM_BASE
160 #define VE_MP_DRAM_BASE VE_A9_MP_DRAM_BASE
161 #define VE_MP_VRAM_BASE VE_A9_MP_VRAM_BASE
162 #define VE_MP_ETHERNET_BASE VE_A9_MP_ETHERNET_BASE
163 #define VE_MP_USB_BASE VE_A9_MP_USB_BASE
164 #define VE_MP_DAP_BASE VE_A9_MP_DAP_BASE
165 #define VE_MP_SYSTEM_REG_BASE VE_A9_MP_SYSTEM_REG_BASE
166 #define VE_MP_SERIAL_BASE VE_A9_MP_SERIAL_BASE
167 #define VE_MP_AACI_BASE VE_A9_MP_AACI_BASE
168 #define VE_MP_MMCI_BASE VE_A9_MP_MMCI_BASE
169 #define VE_MP_KMI0_BASE VE_A9_MP_KMI0_BASE
170 #define VE_MP_UART_BASE VE_A9_MP_UART_BASE
171 #define VE_MP_WDT_BASE VE_A9_MP_WDT_BASE
172 #define VE_MP_TIMER_BASE VE_A9_MP_TIMER_BASE
173 #define VE_MP_DVI_BASE VE_A9_MP_DVI_BASE
174 #define VE_MP_RTC_BASE VE_A9_MP_RTC_BASE
175 #define VE_MP_UART4_BASE VE_A9_MP_UART4_BASE
176 #define VE_MP_CLCD_BASE VE_A9_MP_CLCD_BASE
177 #define VE_MP_GIC_DISTRIBUTOR_BASE VE_A9_MP_GIC_DISTRIBUTOR_BASE
178 #define VE_MP_GIC_INTERFACE_BASE VE_A9_MP_GIC_INTERFACE_BASE
179 #define VE_MP_PRIVATE_TIMER VE_A9_MP_PRIVATE_TIMER
183 //----------------------------------------
184 #define PRIVATE_TABLE_L2_BASE_4k (0x80504000) //Map 4k Private Address space
185 #define SYNC_FLAGS_TABLE_L2_BASE_4k (0x80504C00) //Map 4k Flag synchronization
186 #define PERIPHERAL_A_TABLE_L2_BASE_64k (0x80504400) //Map 64k Peripheral #1 0x1C000000 - 0x1C00FFFFF
187 #define PERIPHERAL_B_TABLE_L2_BASE_64k (0x80504800) //Map 64k Peripheral #2 0x1C100000 - 0x1C1FFFFFF
189 //--------------------- PERIPHERALS -------------------
190 #define PERIPHERAL_A_FAULT (0x00000000 + 0x1c000000) //0x1C000000-0x1C00FFFF (1M)
191 #define PERIPHERAL_B_FAULT (0x00100000 + 0x1c000000) //0x1C100000-0x1C10FFFF (1M)
193 //--------------------- SYNC FLAGS --------------------
194 #define FLAG_SYNC 0xFFFFF000
195 #define F_SYNC_BASE 0xFFF00000 //1M aligned
197 //Import symbols from linker
198 extern uint32_t Image$$VECTORS$$Base;
199 extern uint32_t Image$$RW_DATA$$Base;
200 extern uint32_t Image$$ZI_DATA$$Base;
201 extern uint32_t Image$$TTB$$ZI$$Base;
203 static uint32_t Sect_Normal; //outer & inner wb/wa, non-shareable, executable, rw, domain 0, base addr 0
204 static uint32_t Sect_Normal_Cod; //outer & inner wb/wa, non-shareable, executable, ro, domain 0, base addr 0
205 static uint32_t Sect_Normal_RO; //as Sect_Normal_Cod, but not executable
206 static uint32_t Sect_Normal_RW; //as Sect_Normal_Cod, but writeable and not executable
207 static uint32_t Sect_Device_RO; //device, non-shareable, non-executable, ro, domain 0, base addr 0
208 static uint32_t Sect_Device_RW; //as Sect_Device_RO, but writeable
210 /* Define global descriptors */
211 static uint32_t Page_L1_4k = 0x0; //generic
212 static uint32_t Page_L1_64k = 0x0; //generic
213 static uint32_t Page_4k_Device_RW; //Shared device, not executable, rw, domain 0
214 static uint32_t Page_64k_Device_RW; //Shared device, not executable, rw, domain 0
216 void MMU_CreateTranslationTable(void)
218 mmu_region_attributes_Type region;
220 //Create 4GB of faulting entries
221 MMU_TTSection (&Image$$TTB$$ZI$$Base, 0, 4096, DESCRIPTOR_FAULT);
224 * Generate descriptors. Refer to core_ca.h to get information about attributes
227 //Create descriptors for Vectors, RO, RW, ZI sections
228 section_normal(Sect_Normal, region);
229 section_normal_cod(Sect_Normal_Cod, region);
230 section_normal_ro(Sect_Normal_RO, region);
231 section_normal_rw(Sect_Normal_RW, region);
232 //Create descriptors for peripherals
233 section_device_ro(Sect_Device_RO, region);
234 section_device_rw(Sect_Device_RW, region);
235 //Create descriptors for 64k pages
236 page64k_device_rw(Page_L1_64k, Page_64k_Device_RW, region);
237 //Create descriptors for 4k pages
238 page4k_device_rw(Page_L1_4k, Page_4k_Device_RW, region);
242 * Define MMU flat-map regions and attributes
247 MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$VECTORS$$Base, 1, Sect_Normal_Cod);
248 MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$RW_DATA$$Base, 1, Sect_Normal_RW);
249 MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$ZI_DATA$$Base, 1, Sect_Normal_RW);
251 //all DRAM executable, rw, cacheable - applications may choose to divide memory into ro executable
252 MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$TTB$$ZI$$Base, 2043, Sect_Normal);
254 //--------------------- PERIPHERALS -------------------
255 MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_MP_FLASH_BASE0 , 64, Sect_Device_RO);
256 MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_MP_FLASH_BASE1 , 64, Sect_Device_RO);
257 MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_MP_SRAM_BASE , 64, Sect_Device_RW);
258 MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_MP_VRAM_BASE , 32, Sect_Device_RW);
259 MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_MP_ETHERNET_BASE , 16, Sect_Device_RW);
260 MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_MP_USB_BASE , 16, Sect_Device_RW);
262 // Create (16 * 64k)=1MB faulting entries to cover peripheral range 0x1C000000-0x1C00FFFF
263 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, PERIPHERAL_A_FAULT , 16, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, DESCRIPTOR_FAULT);
264 // Define peripheral range 0x1C000000-0x1C00FFFF
265 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_DAP_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
266 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_SYSTEM_REG_BASE, 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
267 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_SERIAL_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
268 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_AACI_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
269 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_MMCI_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
270 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_KMI0_BASE , 2, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
271 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_UART_BASE , 4, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
272 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_WDT_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
274 // Create (16 * 64k)=1MB faulting entries to cover peripheral range 0x1C100000-0x1C10FFFF
275 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, PERIPHERAL_B_FAULT , 16, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, DESCRIPTOR_FAULT);
276 // Define peripheral range 0x1C100000-0x1C10FFFF
277 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_TIMER_BASE , 2, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
278 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_DVI_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
279 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_RTC_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
280 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_UART4_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
281 MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_MP_CLCD_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
283 // Create (256 * 4k)=1MB faulting entries to cover private address space. Needs to be marked as Device memory
284 MMU_TTPage4k (&Image$$TTB$$ZI$$Base, __get_CBAR() ,256, Page_L1_4k, (uint32_t *)PRIVATE_TABLE_L2_BASE_4k, DESCRIPTOR_FAULT);
285 // Define private address space entry.
286 MMU_TTPage4k (&Image$$TTB$$ZI$$Base, __get_CBAR() , 2, Page_L1_4k, (uint32_t *)PRIVATE_TABLE_L2_BASE_4k, Page_4k_Device_RW);
287 // Define L2CC entry. Uncomment if PL310 is present
288 // MMU_TTPage4k (&Image$$TTB$$ZI$$Base, VE_A9_MP_PL310_BASE , 1, Page_L1_4k, (uint32_t *)PRIVATE_TABLE_L2_BASE_4k, Page_4k_Device_RW);
290 // Create (256 * 4k)=1MB faulting entries to synchronization space (Useful if some non-cacheable DMA agent is present in the SoC)
291 MMU_TTPage4k (&Image$$TTB$$ZI$$Base, F_SYNC_BASE , 256, Page_L1_4k, (uint32_t *)SYNC_FLAGS_TABLE_L2_BASE_4k, DESCRIPTOR_FAULT);
292 // Define synchronization space entry.
293 MMU_TTPage4k (&Image$$TTB$$ZI$$Base, FLAG_SYNC , 1, Page_L1_4k, (uint32_t *)SYNC_FLAGS_TABLE_L2_BASE_4k, Page_4k_Device_RW);
295 /* Set location of level 1 page table
296 ; 31:14 - Translation table base addr (31:14-TTBCR.N, TTBCR.N is 0 out of reset)
298 ; 6 - IRGN[0] 0x1 (Inner WB WA)
299 ; 5 - NOS 0x0 (Non-shared)
300 ; 4:3 - RGN 0x01 (Outer WB WA)
301 ; 2 - IMP 0x0 (Implementation Defined)
302 ; 1 - S 0x0 (Non-shared)
303 ; 0 - IRGN[1] 0x0 (Inner WB WA) */
304 __set_TTBR0(((uint32_t)&Image$$TTB$$ZI$$Base) | 0x48);
307 /* Set up domain access control register
308 ; We set domain 0 to Client and all other domains to No Access.
309 ; All translation table entries specify domain 0 */