[U-Boot] strange behaviors with setexpr syntax error and '==' != '-eq"

Hi,

I write a script on u-boot but i found 2 strange behaviors.

The first one is when I try to do a mask from a memory address and store it to an env variable.

=> setexpr toto *{loadaddr} & 0xFF syntax error => setexpr toto *{loadaddr} & 0x3F syntax error => setexpr toto 0x3F & *{loadaddr} syntax error

The second one is the difference between '==' and '-eq'

=> setenv a 1 => setenv b 2 => if test ${a} -eq ${b}; then echo toto; fi; => if test ${a} == ${b}; then echo toto; fi; toto

Which doesn't seem logic.

Could you please explain me these behaviors ?

Thanks, Clement