MPSOC(ZCU104) BRAM实现PL与PS数据互联 mmap（/dev/men） 访问失败

int g_fd_mmw_data = open(/dev/mem, O_RDWR);

volatile unsigned int *mapped_base = NULL;

 

mapped_base = (volatile unsigned int *)mmap(NULL, 0x1000, PROT_READ | PROT_WRITE, MAP_SHARED,

g_fd_mmw_data, (__off_t)0x0080000000);

 

printf("Mem address %p.\n", mapped_base);

printf("ddr address %p.\n", (unsigned int *)((unsigned int)mapped_base + 12));

*((volatile unsigned int *) ((unsigned int)mapped_base + 12)) = 0;

 

root@zcu104_test:/mnt/app# ./NSRX_APP_V1.0.0.elf  

Mem address 0x7f9ec95000.

ddr address 0x9ec9500c.

[  280.181419] NSRX_APP_V1.0.0[2187]: unhandled level 1 translation fault (11) at 0x9ec9500c, esr 0x92000045, in NSRX_APP_V1.0.0.elf[400000+1d000]

[  280.198676] CPU: 1 PID: 2187 Comm: NSRX_APP_V1.0.0 Not tainted 4.14.0 #1

[  280.205342] Hardware name: ZynqMP ZCU104 RevC (DT)

[  280.210113] task: ffffffc06bf3f180 task.stack: ffffff800be58000

[  280.216019] PC is at 0x415fd8

[  280.218960] LR is at 0x415fcc

[  280.221917] pc : [<0000000000415fd8>] lr : [<0000000000415fcc>] pstate: 60000000

[  280.229296] sp : 0000007ffe579ec0

[  280.232593] x29: 0000007ffe579ec0 x28: 0000000000000000

[  280.237887] x27: 0000000000000000 x26: 0000000000000000

[  280.243183] x25: 0000000000000000 x24: 0000000000000000

[  280.248477] x23: 0000000000000000 x22: 0000000000000000

[  280.253777] x21: 0000000000401e50 x20: 0000000000000000

[  280.259068] x19: 0000000000418ad8 x18: 0000007ffe579da8

[  280.264363] x17: 0000007f9ea8b6a8 x16: 000000000042d268

[  280.269658] x15: 0000000000000010 x14: 0000000000000001

[  280.274952] x13: 0000000000000000 x12: 0000000000000000