TI中文支持网我们参考TI官方demo板做了一块AM4379的核心板
ARM MPU AM437X Starter Kit EVM
配置从SD卡启动后，串口打印信息如下：
U-Boot SPL 2016.05-g2f757e5b2c (Oct 03 2016 – 18:09:21)
Trying to boot from MMC1
omap_hsmmc_send_cmd: timedout waiting on cmd inhibit to clear
omap_hsmmc_send_cmd: timedout waiting on cmd inhibit to clear
SPL: Please implement spl_start_uboot() for your board
SPL: Direct Linux boot not active!
** Partition 1 not valid on device 0 **
spl_register_fat_device: fat register err – -1
spl_load_image_fat: error reading image u-boot.img, err – -1
SPL: Please implement spl_start_uboot() for your board
SPL: Direct Linux boot not active!
spl: no partition table found
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###
请问这是什么问题？
Shine：
先检查一下mmc/sd电路是否和demo板一样，sysboot管脚模式配对了吗？
如果有demo板的话，可以先在demo板上跑一下，看SD卡的制作有没有问题？http://processors.wiki.ti.com/index.php/Linux_Core_U-Boot_User's_Guide#Using_SD.2C_eMMC_or_USB_storage
yongqing wang：
你可以参考一下
BeagleBone Black的资料http://processors.wiki.ti.com/index.php/Processor_SDK_Linux_Getting_Started_Guide
