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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
45 * 6.00 pkp 06/27/16 moving the Init_MPU code to .boot section since it is a
46 * part of processor boot process
53 ******************************************************************************/
54 /***************************** Include Files *********************************/
56 #include "xil_types.h"
57 #include "xreg_cortexr5.h"
59 #include "xpseudo_asm.h"
60 #include "xparameters.h"
62 /***************** Macros (Inline Functions) Definitions *********************/
64 /**************************** Type Definitions *******************************/
66 /************************** Constant Definitions *****************************/
68 /************************** Variable Definitions *****************************/
72 unsigned int encoding;
76 { 0x80, REGION_128B },
77 { 0x100, REGION_256B },
78 { 0x200, REGION_512B },
81 { 0x1000, REGION_4K },
82 { 0x2000, REGION_8K },
83 { 0x4000, REGION_16K },
84 { 0x8000, REGION_32K },
85 { 0x10000, REGION_64K },
86 { 0x20000, REGION_128K },
87 { 0x40000, REGION_256K },
88 { 0x80000, REGION_512K },
89 { 0x100000, REGION_1M },
90 { 0x200000, REGION_2M },
91 { 0x400000, REGION_4M },
92 { 0x800000, REGION_8M },
93 { 0x1000000, REGION_16M },
94 { 0x2000000, REGION_32M },
95 { 0x4000000, REGION_64M },
96 { 0x8000000, REGION_128M },
97 { 0x10000000, REGION_256M },
98 { 0x20000000, REGION_512M },
99 { 0x40000000, REGION_1G },
100 { 0x80000000, REGION_2G },
101 { 0x100000000, REGION_4G },
104 /************************** Function Prototypes ******************************/
105 void Init_MPU(void) __attribute__((__section__(".boot")));
106 static void Xil_SetAttribute(u32 addr, u32 reg_size,s32 reg_num, u32 attrib) __attribute__((__section__(".boot")));
107 static void Xil_DisableMPURegions(void) __attribute__((__section__(".boot")));
109 /*****************************************************************************
111 * Initialize MPU for a given address map and Enabled the background Region in
112 * MPU with default memory attributes for rest of address range for Cortex R5
120 ******************************************************************************/
130 Xil_DisableMPURegions();
133 #ifdef XPAR_PSU_R5_DDR_0_S_AXI_BASEADDR
134 /* If the DDR is present, configure region as per DDR size */
135 size = (XPAR_PSU_R5_DDR_0_S_AXI_HIGHADDR - XPAR_PSU_R5_DDR_0_S_AXI_BASEADDR) + 1;
136 if (size < 0x80000000) {
137 /* Lookup the size. */
138 for (i = 0; i < sizeof region_size / sizeof region_size[0]; i++) {
139 if (size <= region_size[i].size) {
140 RegSize = region_size[i].encoding;
145 /* if the DDR size is > 2GB, truncate it to 2GB */
149 /* For DDRless system, configure region for TCM */
150 RegSize = REGION_256K;
152 Attrib = NORM_NSHARED_WB_WA | PRIV_RW_USER_RW;
153 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
157 * 1G of strongly ordered memory from 0x80000000 to 0xBFFFFFFF for PL.
158 * 512 MB - LPD-PL interface
159 * 256 MB - FPD-PL (HPM0) interface
160 * 256 MB - FPD-PL (HPM1) interface
164 Attrib = STRONG_ORDERD_SHARED | PRIV_RW_USER_RW ;
165 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
168 /* 512M of device memory from 0xC0000000 to 0xDFFFFFFF for QSPI */
170 RegSize = REGION_512M;
171 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
172 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
175 /* 256M of device memory from 0xE0000000 to 0xEFFFFFFF for PCIe Low */
177 RegSize = REGION_256M;
178 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
179 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
182 /* 16M of device memory from 0xF8000000 to 0xF8FFFFFF for STM_CORESIGHT */
184 RegSize = REGION_16M;
185 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
186 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
189 /* 1M of device memory from 0xF9000000 to 0xF90FFFFF for RPU_A53_GIC */
192 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
193 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
196 /* 16M of device memory from 0xFD000000 to 0xFDFFFFFF for FPS slaves */
198 RegSize = REGION_16M;
199 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
200 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
203 /* 16M of device memory from 0xFE000000 to 0xFEFFFFFF for Upper LPS slaves */
205 RegSize = REGION_16M;
206 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
207 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
211 * 16M of device memory from 0xFF000000 to 0xFFFFFFFF for Lower LPS slaves,
215 RegSize = REGION_16M;
216 Attrib = DEVICE_NONSHARED | PRIV_RW_USER_RW ;
217 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
220 /* 256K of OCM RAM from 0xFFFC0000 to 0xFFFFFFFF marked as normal memory */
222 RegSize = REGION_256K;
223 Attrib = NORM_NSHARED_WB_WA| PRIV_RW_USER_RW ;
224 Xil_SetAttribute(Addr,RegSize,RegNum, Attrib);
226 /* A total of 10 MPU regions are allocated with another 6 being free for users */
230 /*****************************************************************************
232 * Set the memory attributes for a section of memory with starting address addr
233 * of the region size defined by reg_size having attributes attrib of region number
236 * @param addr is the address for which attributes are to be set.
237 * @param attrib specifies the attributes for that memory region.
238 * @param reg_size specifies the size for that memory region.
239 * @param reg_num specifies the number for that memory region.
243 ******************************************************************************/
244 static void Xil_SetAttribute(u32 addr, u32 reg_size,s32 reg_num, u32 attrib)
246 u32 Local_reg_size = reg_size;
248 Local_reg_size = Local_reg_size<<1U;
249 Local_reg_size |= REGION_EN;
251 mtcp(XREG_CP15_MPU_MEMORY_REG_NUMBER,reg_num);
253 mtcp(XREG_CP15_MPU_REG_BASEADDR,addr); /* Set base address of a region */
254 mtcp(XREG_CP15_MPU_REG_ACCESS_CTRL,attrib); /* Set the control attribute */
255 mtcp(XREG_CP15_MPU_REG_SIZE_EN,Local_reg_size); /* set the region size and enable it*/
257 isb(); /* synchronize context on this processor */
261 /*****************************************************************************
263 * Disable all the MPU regions if any of them is enabled
270 ******************************************************************************/
271 static void Xil_DisableMPURegions(void)
275 for (Index = 0; Index <= 15; Index++) {
276 mtcp(XREG_CP15_MPU_MEMORY_REG_NUMBER,Index);
277 Temp = mfcp(XREG_CP15_MPU_REG_SIZE_EN);
278 Temp &= (~REGION_EN);
280 mtcp(XREG_CP15_MPU_REG_SIZE_EN,Temp);