[U-Boot] One basic U-boot question

Hello, I have the following question. It is about the adresses where the U-boot and Linux Kernel are copyed in the SDRAM from NAND.

In my board config file I have: #define CONFIG_SYS_LOAD_ADDR 0x22000000 /* load address */ Is that the load address of the U-boot?

Also where is defined the load address of the Kernel because may be I need to leave more free space about the Kernel and RootFS?

Thanks in advance! Martin Peevski