sh7751r/netboot/initrd.gz                   -- netboot initrd
sh7751r/netboot/vmlinuz-5.9.0-4-sh7751r     -- kernel image to netboot
sh7785lcr/netboot/initrd.gz                 -- netboot initrd
sh7785lcr/netboot/vmlinuz-5.9.0-4-sh7785lcr -- kernel image to netboot
