uboot如何配置加载Linux内核+dts文件

[yanjinbin]

在一个开发板中,uboot加载Linux内核+dts,加载打印内容如下:

## Loading kernel from FIT Image at 22000000 ...
   Using 'conf@1' configuration
   Trying 'kernel@1' kernel subimage
     Description:  AT91SAM9X5 Linux kernel
     Type:         Kernel Image
     Compression:  uncompressed
     Data Start:   0x220000ec
     Data Size:    3911080 Bytes = 3.7 MiB
     Architecture: ARM
     OS:           Linux
     Load Address: 0x20008000
     Entry Point:  0x20008000
     Hash algo:    crc32
     Hash value:   c7b383f0
   Verifying Hash Integrity ... crc32+ OK
## Loading fdt from FIT Image at 22000000 ...
   Using 'conf@1' configuration
   Trying 'fdt@1' fdt subimage
     Description:  Flattened Device Tree blob
     Type:         Flat Device Tree
     Compression:  uncompressed
     Data Start:   0x223baf78
     Data Size:    26657 Bytes = 26 KiB
     Architecture: ARM
     Hash algo:    crc32
     Hash value:   8b704b4c
   Verifying Hash Integrity ... crc32+ OK
   Booting using the fdt blob at 0x223baf78
   Loading Kernel Image ... OK
   Loading Device Tree to 26f13000, end 26f1c820 ... OK

现在我想了解下的问题是:
1.Linux是3.18版本,我想知道如何把Linux内核和dts设备驱动描述文件编译到一个uImage中,在make menuconfig中需要配置那些项。

2.uboot使用的2015.01版本,uboot在make menuconfig需要配置那些项,才会自动加载Linux内核+dts。

由于以前用的是Linux 2.6.39突然遇到不一样的,dts设备描述文件有点懵圈啊。