At the core of the i.MX25 is Freescale's fast, proven, power-efficient implementation of the ARM926EJ-S core, with speeds of up to 400MHz. The i.MX25 includes support for up to 133-MHz DDR2 memory, integrated 10/100 Ethernet MAC, and two on-chip USB PHYs. The device is suitable for a wide range of applications, including the following: •Graphical remote controls •Human machine interface (HMI) •Residential and commercial control panels•Residential gateway (smart metering)•Handheld scanners and printers

以上是DATASHEET中的简介。可见是ARM9内核，跑linux不在话下