MPU problems

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I've tried to reply in my sopcinfo project (see below) the same regions of the Altera project example (also the JTAG area).

https://www.alteraforum.com/forum/attachment.php?attachmentid=7050

All my software project (.text, .bss, .heap, .stack, .rodata, .rwdata, .exception) is stored in sdram. Only .entry is in ext-flash.

I've set the following limits for the MPU regions:

void nios2_mpu_data_init()

{

Nios2MPURegion region[NIOS2_MPU_NUM_DATA_REGIONS];

unsigned int num_of_region = NIOS2_MPU_NUM_DATA_REGIONS;

/* JTAG UART */

region[0].index = 0;

region[0].base = 0x84822; // Byte Address 0x021208B0 (64bytes)

region[0].mask = 0x84823; // Byte Address 0x021208B8 (64bytes)

region[0].c = 0;

region[0].perm = MPU_DATA_PERM_SUPER_RW_USER_RW;

/* JTAG debug module */

region[1].index = 1;

region[1].base = 0x84800; // Byte Address 0x02120000 (64bytes)

region[1].mask = 0x84820; // Byte Address 0x02120800 (64bytes)

region[1].c = 0;

region[1].perm = MPU_DATA_PERM_SUPER_RW_USER_RW;

/* SDRAM */

region[2].index = 2;

region[2].base = 0x40000; // Byte Address 0x01000000 (64bytes)

region[2].mask = 0x80000; // Byte Address 0x02000000 (64bytes)

region[2].c = 0;

region[2].perm = MPU_DATA_PERM_SUPER_RW_USER_RW;

/* Entire address range */

region[3].index = 3;

region[3].base = 0x0; // Byte Address 0x00000000 (64bytes)

region[3].mask = 0x2000000; // Byte Address 0x80000000 (64bytes)

region[3].c = 0;

region[3].perm = MPU_DATA_PERM_SUPER_RW_USER_RW;

nios2_mpu_load_region(region, num_of_region, 1);

}

void nios2_mpu_inst_init()

{

Nios2MPURegion region[NIOS2_MPU_NUM_INST_REGIONS];

unsigned int num_of_region = NIOS2_MPU_NUM_INST_REGIONS;

/* JTAG debug module */

region[0].index = 0;

region[0].base = 0x84800; // Byte Address 0x02120000 (64bytes)

region[0].mask = 0x84820; // Byte Address 0x02120800 (64bytes)

region[0].c = 0;

region[0].perm = MPU_INST_PERM_SUPER_EXEC_USER_EXEC;

/* SDRAM */

region[1].index = 1;

region[1].base = 0x40000; // Byte Address 0x01000000 (64bytes)

region[1].mask = 0x80000; // Byte Address 0x02000000 (64bytes)

region[1].c = 0;

region[1].perm = MPU_INST_PERM_SUPER_EXEC_USER_EXEC;

/* Entire address range */

region[2].index = 2;

region[2].base = 0x0; // Byte Address 0x00000000 (64bytes)

region[2].mask = 0x2000000; // Byte Address 0x80000000 (64bytes)

region[2].c = 0;

region[2].perm = MPU_INST_PERM_SUPER_EXEC_USER_EXEC;

nios2_mpu_load_region(region, num_of_region, 0);

}

When I run the code the exception handler executes and shows the Cause Symbol = 17 (NIOS_EXCEPTION_DATA_REGION_VIOLATION).

Thanks a lot