Hi ti

 SDK 版本：ti-processor-sdk-linux-am57xx-evm-08_02_01_00

请问一下，我用相同的uboot，能启动低版本的内核，但是没有办法启动08_02_01_00里面的内核。

还有请问，ti-processor-sdk-linux-am57xx-evm-08_02_01_00 对应AM5708的

early printk 需要怎么设置才能生效，我想确定以下是否是因为设备树设置错误导致。十分感谢

uboot 日志：

## Current stack ends at 0x9df297e0 *  kernel: cmdline image address = 0x82000000
## Skipping init Ramdisk
## No init Ramdisk
   ramdisk start = 0x00000000, ramdisk end = 0x00000000
*  fdt: cmdline image address = 0x88000000
## Checking for 'FDT'/'FDT Image' at 88000000
*  fdt: raw FDT blob
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
   of_flat_tree at 0x88000000 size 0x00017eb3
Initial value for argc=3
Final value for argc=3
using: FDT
## initrd_high = 0x90000000, copy_to_ram = 1
   ramdisk load start = 0x00000000, ramdisk load end = 0x00000000
## device tree at 88000000 ... 88017eb2 (len=110259 [0x1AEB3])
   Loading Device Tree to 8ffe5000, end 8ffffeb2 ... OK
Initial value for argc=3
Final value for argc=3
Updating property '/ocp/ethernet@48484000/slave@48480200/mac-address' =  6c c3 74 bd 51 78
Updating property '/ocp/ethernet@48484000/slave@48480200/local-mac-address' =  6c c3 74 bd 51 78
dipsy >> boot_jump_linux 361
## Transferring control to Linux (at address 82000000)...

Starting kernel ...

setp 1 ...%
setp 2 ...%
setp 3 ...%
setp 4 ...%
setp 5 ...%
dipsy >> boot_jump_linux 366
dipsy >> boot_jump_linux 371
dipsy >> boot_jump_linux 380 machid = 0x0 r2 = 0x8ffe5000