最近在做am3358上的PRU_ICSS，打算虚拟4个串口，找到了一个资料：https://processors.wiki.ti.com/index.php/Soft-UART_Implementation_on_AM335X_PRU_-_Software_Users_Guide ，但是这个文档上的PRU驱动和串口的固件连接都失效了，请问还有哪里可以获取到PRU的驱动和SUART的驱动吗？
失效的连接如下：
NOTE: the git clone URLs have changed as of 5/8/2018.
Linux Kernel and Driver Source: https://gitorious.org/pru/am335x-pru-linux-drivers.git
SUART Firmware: https://gitorious.org/pru/am335x-pru-uart-fw.git
OpenEmbedded Recipes not currently available.
上面连个连接无论是git clone https://......还是git clone git://都无法获取到
