关于c6678 uart nor

hi,
我用的是tmdsevm6678le评估板，仿真器xds560，在跑tipdk_C6678_1_1_2_5packagestiplatformevmc6678lplatform_test时，其他均正常，只有uart和nor失败，详情如下
nor:
[C66xx_0] Current core id is 0
[C66xx_0] EEPROM test start
[C66xx_0] test_eeprom: passed
[C66xx_0] EEPROM test complete
[C66xx_0] NAND test start
[C66xx_0] test_nand: passed
[C66xx_0] NAND test complete
[C66xx_0] NOR test start
[C66xx_0] test_nor: Read failed errno = 0x2
[C66xx_0] NOR test complete
uart:

[C66xx_0] Current core id is 0
[C66xx_0] UART test start
[C66xx_0] Open a serial port console in a PC connected to
[C66xx_0] the board using UART and set its baudrate to 115200
[C66xx_0] You should see following message ---
[C66xx_0] This is a Platform UART API unit test ...
[C66xx_0] Type 10 characters in serial console
于是我把程序换成论坛上提供的测试程序KI_STK_20140123，中的uart，还是失败，具体现象如下：
[C66xx_0] Initialize DSP main clock = 100.00MHz/1x10 = 1000MHz
[C66xx_0]
[C66xx_0] Init UART0 at 115200bps in loopback mode...
[C66xx_0] Required baud rate 115200, effective baud rate 115740!
[C66xx_0] UART0: Tx 1024 bytes, Rx 1024 bytes, 1024 correct bytes. Consumes 88471996 cycles, throughput is 92Kbps
[C66xx_0]
[C66xx_0] Init UART0 at 230400bps in loopback mode...
[C66xx_0] Required baud rate 230400, effective baud rate 231481!
[C66xx_0] UART0: Tx 1024 bytes, Rx 1024 bytes, 0 correct bytes. Consumes 44236354 cycles, throughput is 185Kbps
[C66xx_0]
[C66xx_0] Init UART0 at 460800bps in loopback mode...
[C66xx_0] Required baud rate 460800, effective baud rate 452898!
[C66xx_0] UART0: Tx 1024 bytes, Rx 1024 bytes, 0 correct bytes. Consumes 22609858 cycles, throughput is 362Kbps
[C66xx_0]
[C66xx_0] Init UART0 at 921600bps in loopback mode...
[C66xx_0] Required baud rate 921600, effective baud rate 946969!
[C66xx_0] UART0: Tx 1024 bytes, Rx 1024 bytes, 0 correct bytes. Consumes 10813630 cycles, throughput is 757Kbps
[C66xx_0]
[C66xx_0] Init UART0 at 1843200bps in loopback mode...
[C66xx_0] Required baud rate 1843200, effective baud rate 1736111!
[C66xx_0] UART0: Tx 1024 bytes, Rx 1024 bytes, 0 correct bytes. Consumes 5898694 cycles, throughput is 1388Kbps
[C66xx_0]
[C66xx_0] Init UART0 at 3686400bps in loopback mode...
[C66xx_0] Required baud rate 3686400, effective baud rate 3472222!
[C66xx_0] UART0: Tx 1024 bytes, Rx 1024 bytes, 0 correct bytes. Consumes 2949652 cycles, throughput is 2777Kbps
[C66xx_0]
[C66xx_0] Init UART0 at 115200bps...
[C66xx_0] Required baud rate 115200, effective baud rate 115740!
[C66xx_0] Start print character code from 0 to 255 over UART0...
在尝试打印字符后，就卡住了，我的串口上位机程序也没有反应，当然我的串口线已经连上，com1打开，波特率也设成了115200，请问是我的配置哪里有问题吗？还是买来的板子uart模块有问题？另外，nor flash通过spi驱动，所以我尝试运行KI_STK_20140123，中的spi，运行仍然失败，请教下是哪里有问题，会是nor flash芯片的原因吗？
[C66xx_0] Initialize DSP main clock = 100.00MHz/1x10 = 1000MHz
[C66xx_0]
[C66xx_0] SPI internal loopback test at 66MHz...
[C66xx_0] SPI loopback test passed with data pattern 0x0. Throughput= 32Mbps
[C66xx_0] SPI loopback test passed with data pattern 0xffff. Throughput= 32Mbps
[C66xx_0] SPI loopback test passed with data pattern 0x5555. Throughput= 32Mbps
[C66xx_0] SPI interrupt test: manually generate RX overrun error...
另外我在跑KI_STK_20140123的程序时都是不能单步执行的，显示如下：
No source available for "main() at SPIDebugSPI.out:[3] 0xc06aa84[4]"
请问是需要在哪里设置吗？
总结下我的问题：
1.uart配置哪里有问题？还是说板子uart模块有问题？
2.spi驱动nor flash，代码运行失败，会是哪里的问题？
3.KI_STK_20140123的程序不能单步执行，是哪里设置有问题？
菜鸟提问，各位大神多多指教