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TIDM368 IPNC执行reboot后不能启动：

Sending all processes the KILL signal... Done. #这是执行reboot

Starting reboot command: reboot

Rebooting...

Restarting system.

DM36x initialization passed!

TI UBL Version: 1.50

Booting Catalog Boot Loader

BootMode = NAND

Starting NAND Copy... #将程序从FLASH拷贝到DDR RAM中运行。

Valid magicnum, 0xA1ACED66, found in block 0x00000008.

DONE

Jumping to entry point at 0x81080000.

DM368_IPNC_UBL_1.0.0

U-Boot 1.3.4 (Dec 16 2010 - 21:38:22) DM368-IPNC-1.0.0 #交权给uboot

I2C: ready

DRAM: 128 MB

NAND: NAND device: Manufacturer ID: 0xec, Chip ID: 0xf1 (Samsung NAND 128MiB 3,3V 8-bit)

TTTTTTTTTTTTTTTTEDMA_Read8 timeout!! #timeout发生在copy的过程中，这表明是u-boot init NAND flash有问题。

TTTTTTTTTTTTTTTTEDMA_Read8 timeout!!

Bad block table not found for chip 0

TTTTTTTTTTTTTTTTEDMA_Read8 timeout!!

Bad block table found at page 65408, version 0x01

TTTTTTTTTTTTTTTTEDMA_Read8 timeout!!

Bad block table written to 0x07fe0000, version 0x01

128 MiB

TTTTTTTTTTTTTT

第一次的对策由TI的第三方Appro公司的的george给出：

他的建议是：正常的reboot程序，請參考

ipnc_app/network/boa-0.94.13/src/appro_api.c 中的 void restart_ipcam(.....){} 的寫法

關於reboot_ipnc，可以參照上述function

自行修改 ipnc_app/interface/src/reboot_ipnc.c

我把code paste here

void restart_ipcam(void)

{

char cmd[64];

int dev_fp;

void *pMem_map;

unsigned long phyAddr= 0x01C41000;

unsigned long length = 0xAE0;

unsigned int *pPSCCtrl = NULL;

unsigned int *pPTCMD = NULL;

if ((dev_fp=open("/dev/mem",O_RDWR|O_SYNC))==-1)

{

return ;

}

pMem_map=mmap((void *)phyAddr,length,PROT_READ|PROT_WRITE|PROT_EXEC,MAP_SHARED, dev_fp,phyAddr);

if (pMem_map!=(void *)phyAddr)

{

return ;

}

pPTCMD = (unsigned int *)( (char *)pMem_map+0x120);

pPSCCtrl = (unsigned int *)( (char *)pMem_map+0xA00);

//EDMA

*(pPSCCtrl+0) = 2;

*pPTCMD = 1;

usleep(5000);

//EDMA

*(pPSCCtrl+1) = 2;

*pPTCMD = 1;

usleep(5000);

//EDMA

*(pPSCCtrl+2) = 2;

*pPTCMD = 1;

usleep(5000);

//EDMA

*(pPSCCtrl+3) = 2;

*pPTCMD = 1;

usleep(5000);

//EDMA

*(pPSCCtrl+4) = 2;

*pPTCMD = 1;

usleep(5000);

//VPSS

*(pPSCCtrl+47) = 2;

*pPTCMD = 1;

usleep(5000);

//MJCP

*(pPSCCtrl+50) = 2;

*pPTCMD = 1;

usleep(5000);

//HDVICP

*(pPSCCtrl+51) = 2;

*pPTCMD = 1;

usleep(5000);

if( pMem_map )

munmap(pMem_map, length);

if( dev_fp >= 0)

close(dev_fp);

sprintf(cmd, "/sbin/shutdown -r now");

system(cmd);

return;

}

从程序来看，只是做了一个munmap的动作，似乎多此一举。而且，我实测的结果是，这样可能会导致reboot根本无法成功，就是说，reboot都无法用了。

对策二：用watchdog来复位。

实测的结果是：30次会发生约1次不成功，也就是说，仍然有机率复位不成功。

I updated to ipnc ubl 2.1.0 + u-boot 1.0(the uboot is same as previous ipnc 2.0), the emda_timeout iusse seems fix, but ubl hangup with watchdog reset. Following is the log,

DM36x initialization passed!

TI UBL Base Version: 1.50

Boot Loader BootMode = NAND

Starting NAND Copy... # hangup there

Normal boot log is

DM36x initialization passed! # normal TI UBL Base Version: 1.50 Boot Loader BootMode = NAND Starting NAND Copy... Valid magicnum, 0xA1ACED66, found in block 0x00000008. Boot Mode Task Completed

IPNC UBL Version: 2.1.0 Platform: DM368-432

Jumping to entry point at 0x81080000

U-Boot 1.3.4 (Apr 20 2010 - 11:42:44) DM368-IPNC-1.0.0

...............................