生成的u-boot。ldr文件  烧写到SPI flash里面  串口打印出如下信息  谁能帮我分析下这是哪儿有问题啊  是不是spi flash驱动有问题？EXCAUSE : 0x21
是不是说硬件有问题？

U-Boot 1.1.6 (ADI-2008R1) (Aug 18 2014 - 19:27:27)

CPU:   ADSP bf531 (Detected Rev: 0.5)
Board: ADI BF533 Stamp board
       Support: http://blackfin.uclinux.org/
Clock: VCO: 400 MHz, Core: 400 MHz, System: 133 MHz
RAM:   32 MB

Ack! Something bad happened to the Blackfin!

SEQUENCER STATUS:
SEQSTAT: 0000c021  IPEND: 1fc00b2  SYSCFG: 0032
  HWERRCAUSE: 0x3
  EXCAUSE   : 0x21
  physical IVG7 asserted : <0x01fc0460> { _evt_default + 0x0 }
RETE: <0x83a001a0> { ___smulsi3_highpart + 0x81a2c98c }
RETN: <0xd02ee801> { ___smulsi3_highpart + 0xce31afed }
RETX: <0x00000180> /* unknown address */
RETS: <0x00000000> /* Maybe null pointer? */
PC  : <0x01fc00b2> { _start + 0xb2 }
DCPLB_FAULT_ADDR: <0x01f5bedc> /* unknown address */
ICPLB_FAULT_ADDR: <0x00000180> /* unknown address */

PROCESSOR STATE:
R0 : 00000010    R1 : 00000008    R2 : 00000010    R3 : 00000000
R4 : f0000000    R5 : 07f28155    R6 : 00000000    R7 : 000000f0
P0 : 01fe175c    P1 : 00000000    P2 : 01f5bedb    P3 : 01fd3928
P4 : 01fe1764    P5 : 01f5c000    FP : 01fe175c    SP : 01f5be0c
LB0: 01fd37dc    LT0: 01fd37d0    LC0: 00000000
LB1: 01fce142    LT1: 01fce140    LC1: 00000000
B0 : 21064396    L0 : 00000000    M0 : 154eda43    I0 : 01f5becc
B1 : 25c44b43    L1 : 00000000    M1 : 45ce5f20    I1 : c9445027
B2 : 5da663c4    L2 : 00000000    M2 : f584bb00    I2 : 55cc134b
B3 : 5d44cb49    L3 : 00000000    M3 : 45888107    I3 : 8ccc4267
A0.w: 02155555   A0.x: 00000000   A1.w: 000028cf   A1.x: 00000000
USP : 5d44c967  ASTAT: 00001004

Hardware Trace:
   0 Target : <0x01fc0930> { _bfin_panic + 0x0 }
     Source : <0x01fc0af4> { _trap_c + 0x188 }
   1 Target : <0x01fc0aea> { _trap_c + 0x17e }
     Source : <0x01fc0988> { _trap_c + 0x1c }
   2 Target : <0x01fc096c> { _trap_c + 0x0 }
     Source : <0x01fc0406> { _trap + 0x56 }
   3 Target : <0x01fc03b0> { _trap + 0x0 }
     Source : <0x0000017e> /* unknown address */
   4 Target : <0x00000000> /* Maybe null pointer? */
     Source : <0x01fc404a> { _flash_write_cmd + 0x7a }
   5 Target : <0x01fc4044> { _flash_write_cmd + 0x74 }
     Source : <0x01fc4012> { _flash_write_cmd + 0x42 }
   6 Target : <0x01fc4008> { _flash_write_cmd + 0x38 }
     Source : <0x01fc4000> { _flash_write_cmd + 0x30 }
   7 Target : <0x01fc3ff6> { _flash_write_cmd + 0x26 }
     Source : <0x01fc3fce> { _flash_make_cmd + 0x3a }
   8 Target : <0x01fc3fb6> { _flash_make_cmd + 0x22 }
     Source : <0x01fc3fb0> { _flash_make_cmd + 0x1c }
   9 Target : <0x01fc3fa6> { _flash_make_cmd + 0x12 }
     Source : <0x01fc3fc8> { _flash_make_cmd + 0x34 }
  10 Target : <0x01fc3fb6> { _flash_make_cmd + 0x22 }
     Source : <0x01fc3fb0> { _flash_make_cmd + 0x1c }
  11 Target : <0x01fc3fa6> { _flash_make_cmd + 0x12 }
     Source : <0x01fc3fc8> { _flash_make_cmd + 0x34 }
  12 Target : <0x01fc3fb6> { _flash_make_cmd + 0x22 }
     Source : <0x01fc3fb0> { _flash_make_cmd + 0x1c }
  13 Target : <0x01fc3fa6> { _flash_make_cmd + 0x12 }
     Source : <0x01fc3fc8> { _flash_make_cmd + 0x34 }
  14 Target : <0x01fc3fb6> { _flash_make_cmd + 0x22 }
     Source : <0x01fc3fb0> { _flash_make_cmd + 0x1c }
  15 Target : <0x01fc3fa6> { _flash_make_cmd + 0x12 }
     Source : <0x01fc3fc8> { _flash_make_cmd + 0x34 }

Please reset the board

### ERROR ### Please RESET the board ###