IMX6 飞思卡尔（2009-08）U-BOOT和 u-boot主线源代码代码功能对比

Function	2009-08	Main-line
SPI NOR	Supported	Supported
USB Host	uncertain	Supported
USB Slave	Supported	Not supported
SATA	Partial	Supported
SD Card	Supported	Supported
Displays
Freescale LVDS	uncertain	Supported
Boundary LVDS	unsupported	Supported
Boundary RGB	unsupported	Supported
HDMI	unsupported	Supported
Filesystems
FAT	Supported	Supported
ext2	Supported	Supported
ext3	Supported	Supported
ext4	unsupported	Supported
Other peripherals and functionality
Fastboot	Supported	Unsupported
Freescale Mfg Tool	Supported	Unsupported
OTP	Supported	Supported
bmode	Supported	Supported
Ethernet	Supported	Supported
PHY	Supported	Supported
HDMI detection	Unsupported	Supported
I2C detection	Unsupported	Supported
Button press	Unsupported	Supported
Secure boot	Supported	Unsupported

有许多新的功能，新的代码基础，特别是支持SATA，ext4的和各种显示。也有一些性能增强功能和支持设备树，这将成为重要的为即将到来的内核版本。