Boot code

[Emilio]

https://u-boot.readthedocs.io/en/latest/...booti.html

Dear professor
I asked the question after reading the boot and the pages you send me
I only write the last code but this is the
Whole one 

if load  ${devtype}  ${devnum}:${distro_bootpart}  ${ramdisk_addr_r}  /initramfs-linux.img;  then 
    gpio set  157   
  booti  ${kernel_addr_r}  ${ramdisk_addr_r}:${filesize}  ${fdt_addr_r};  
  else  
    gpio set  158     
booti  ${kernel_addr_r}  - ${fdt_addr_r}; 
   fi;
And what I understand is that if the if statement goes well load the kernel otherwise what?
exit the boot? Remove some code loaded?