各位好：
我现在遇到了一个问题就是板子uboot启动的时候卡在uart这部分了，以前也遇到过这个问题，我避开了这个问题，后来我换了了新的sdk包就好了，现在又遇到这个问题了，麻烦各位指点下额。
[ 0.167694] msgmni has been set to 1002
[ 0.170684] alg: No test for stdrng (krng)
[ 0.171325] io scheduler noop registered
[ 0.171325] io scheduler deadline registered
[ 0.171386] io scheduler cfq registered (default)
[ 0.172515] Could not set LED4 to fully on
[ 0.187316] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
正确的log
[ 0.283630] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[ 0.953674] console [ttyO0] enabled
[ 0.958465] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[ 0.966888] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[ 0.975219] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[ 0.983489] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[ 0.991821] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[ 1.001037] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
[ 1.028045] brd: module loaded
[ 1.041870] loop: module loaded
