i.MX/Vybrid recovery utility
This utility allows to download and execute code on Freescale i.MX5/i.MX6 and Vybrid SoCs through the Serial Download Protocol (SDP). Depending on the board, there is usually some kind of recovery button to bring the SoC into serial download boot mode, check documentation of your hardware.
The utility support USB and UART as serial link.
- Clone
- Make sure libusb (1.0) is available
- Compile using make
Two binaries are available, imx_usb and imx_uart for the two supported connections.
Using USB, your device should be detected automatically using the USB VID/PID from imx_usb.conf. Using UART, the user has to specify a configuration file. This file is needed to use the correct protocol variant for the target device (transfer configuration). The configuration file can also contains work item(s).
Work items can also be defined using the command line. By specifying a file in the command line, the utilty automatically uses this file as a work item and reads parameter from its header:
./imx_usb u-boot.imx
However, parameters can also specified manually, e.g.
./imx_usb u-boot.imx -l0x3f400400 -s370796 -v
The UART link uses hardware flow control using RTS/CTS, so make sure those are available. The imx_uart utilty will configure the target tty with the right baud rate (115200) and flow control settings:
./imx_uart /dev/ttyUSB0 vybrid_usb_work.conf u-boot.imx