1 /******************************************************************************
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31 ******************************************************************************/
32 /*****************************************************************************/
36 * This file contains initial configuration of the MPU.
39 * MODIFICATION HISTORY:
41 * Ver Who Date Changes
42 * ----- ---- -------- ---------------------------------------------------
43 * 5.00 pkp 02/20/14 First release
44 * 5.04 pkp 12/18/15 Updated MPU initialization as per the proper address map
51 ******************************************************************************/
52 /***************************** Include Files *********************************/
54 #include "xil_types.h"
55 #include "xreg_cortexr5.h"
57 #include "xpseudo_asm.h"
58 #include "xparameters.h"
60 /***************** Macros (Inline Functions) Definitions *********************/
62 /**************************** Type Definitions *******************************/
64 /************************** Constant Definitions *****************************/
66 /************************** Variable Definitions *****************************/
70 unsigned int encoding;
74 { 0x80, REGION_128B },
75 { 0x100, REGION_256B },
76 { 0x200, REGION_512B },
79 { 0x1000, REGION_4K },
80 { 0x2000, REGION_8K },
81 { 0x4000, REGION_16K },
82 { 0x8000, REGION_32K },
83 { 0x10000, REGION_64K },
84 { 0x20000, REGION_128K },
85 { 0x40000, REGION_256K },
86 { 0x80000, REGION_512K },
87 { 0x100000, REGION_1M },
88 { 0x200000, REGION_2M },
89 { 0x400000, REGION_4M },
90 { 0x800000, REGION_8M },
91 { 0x1000000, REGION_16M },
92 { 0x2000000, REGION_32M },
93 { 0x4000000, REGION_64M },
94 { 0x8000000, REGION_128M },
95 { 0x10000000, REGION_256M },
96 { 0x20000000, REGION_512M },
97 { 0x40000000, REGION_1G },
98 { 0x80000000, REGION_2G },
99 { 0x100000000, REGION_4G },
102 /************************** Function Prototypes ******************************/
104 static void Xil_SetAttribute(u32 addr, u32 reg_size,s32 reg_num, u32 attrib);
105 static void Xil_DisableMPURegions(void);
107 /*****************************************************************************
109 * Initialize MPU for a given address map and Enabled the background Region in
110 * MPU with default memory attributes for rest of address range for Cortex R5
118 ******************************************************************************/
128 Xil_DisableMPURegions();
131 #ifdef XPAR_PSU_R5_DDR_0_S_AXI_BASEADDR
132 /* If the DDR is present, configure region as per DDR size */
133 size = (XPAR_PSU_R5_DDR_0_S_AXI_HIGHADDR - XPAR_PSU_R5_DDR_0_S_AXI_BASEADDR) + 1;
134 if (size < 0x80000000) {
135 /* Lookup the size. */
136 for (i = 0; i < sizeof region_size / sizeof region_size[0]; i++) {
137 if (size <= region_size[i].size) {
138 RegSize = region_size[i].encoding;
143 /* if the DDR size is > 2GB, truncate it to 2GB */
147 /* For DDRless system, configure region for TCM */
148 RegSize = REGION_256K;
150 Attrib = NORM_NSHARED_WB_WA | PRIV_RW_USER_RW;
151 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
155 * 1G of strongly ordered memory from 0x80000000 to 0xBFFFFFFF for PL.
156 * 512 MB - LPD-PL interface
157 * 256 MB - FPD-PL (HPM0) interface
158 * 256 MB - FPD-PL (HPM1) interface
162 Attrib = STRONG_ORDERD_SHARED | PRIV_RW_USER_RW ;
163 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
166 /* 512M of device memory from 0xC0000000 to 0xDFFFFFFF for QSPI */
168 RegSize = REGION_512M;
169 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
170 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
173 /* 256M of device memory from 0xE0000000 to 0xEFFFFFFF for PCIe Low */
175 RegSize = REGION_256M;
176 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
177 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
180 /* 16M of device memory from 0xF8000000 to 0xF8FFFFFF for STM_CORESIGHT */
182 RegSize = REGION_16M;
183 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
184 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
187 /* 1M of device memory from 0xF9000000 to 0xF90FFFFF for RPU_A53_GIC */
190 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
191 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
194 /* 16M of device memory from 0xFD000000 to 0xFDFFFFFF for FPS slaves */
196 RegSize = REGION_16M;
197 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
198 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
201 /* 16M of device memory from 0xFE000000 to 0xFEFFFFFF for Upper LPS slaves */
203 RegSize = REGION_16M;
204 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
205 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
209 * 16M of device memory from 0xFF000000 to 0xFFFFFFFF for Lower LPS slaves,
213 RegSize = REGION_16M;
214 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
215 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
218 /* 256K of OCM RAM from 0xFFFC0000 to 0xFFFFFFFF marked as normal memory */
220 RegSize = REGION_256K;
221 Attrib = NORM_NSHARED_WB_WA| PRIV_RW_USER_RW ;
222 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
224 /* A total of 10 MPU regions are allocated with another 6 being free for users */
228 /*****************************************************************************
230 * Set the memory attributes for a section of memory with starting address addr
231 * of the region size defined by reg_size having attributes attrib of region number
234 * @param addr is the address for which attributes are to be set.
235 * @param attrib specifies the attributes for that memory region.
236 * @param reg_size specifies the size for that memory region.
237 * @param reg_num specifies the number for that memory region.
241 ******************************************************************************/
242 static void Xil_SetAttribute(u32 addr, u32 reg_size,s32 reg_num, u32 attrib)
244 u32 Local_reg_size = reg_size;
246 Local_reg_size = Local_reg_size<<1U;
247 Local_reg_size |= REGION_EN;
249 mtcp(XREG_CP15_MPU_MEMORY_REG_NUMBER,reg_num);
251 mtcp(XREG_CP15_MPU_REG_BASEADDR,addr); /* Set base address of a region */
252 mtcp(XREG_CP15_MPU_REG_ACCESS_CTRL,attrib); /* Set the control attribute */
253 mtcp(XREG_CP15_MPU_REG_SIZE_EN,Local_reg_size); /* set the region size and enable it*/
255 isb(); /* synchronize context on this processor */
259 /*****************************************************************************
261 * Disable all the MPU regions if any of them is enabled
268 ******************************************************************************/
269 static void Xil_DisableMPURegions(void)
273 for (Index = 0; Index <= 15; Index++) {
274 mtcp(XREG_CP15_MPU_MEMORY_REG_NUMBER,Index);
275 Temp = mfcp(XREG_CP15_MPU_REG_SIZE_EN);
276 Temp &= (~REGION_EN);
278 mtcp(XREG_CP15_MPU_REG_SIZE_EN,Temp);