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am3358 的处理器,在uboot 里面读取 pwm (0x48300000)寄存器报data abort 异常,然后重启了

Other Parts Discussed in Thread: AM3358

am3358 的处理器,在uboot 里面读取 pwm (0x48300000)寄存器报data abort 异常,然后重启了。

操作和结果如下:

=> md 0x48300000 1
48300000:data abort
pc : [<9ff8ab6e>]          lr : [<9ff8ab53>]
reloc pc : [<8082cb6e>]    lr : [<8082cb53>]
sp : 9ef3dce8  ip : 48300000     fp : 00000008
r10: 48300000  r9 : 9ef3ded8     r8 : 48300000
r7 : 00000001  r6 : 00000001     r5 : 00000004  r4 : 00000004
r3 : 00000000  r2 : 0000003a     r1 : 9ef3dcfc  r0 : 00000009
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32
Resetting CPU ...

resetting ...

为什么会出现这种情况?怎么解决