uenvcmd=run mybootcmd
mybootcmd=echo Loading custom boot command; \
echo Loading kernel; \
afs load ${kernel_name} ${kernel_addr} ; \
if test $? -eq 1; then echo Loading ${kernel_alt_name} instead of ${kernel_name}; afs load ${kernel_alt_name} ${kernel_addr}; fi; \
echo Loading device tree; \
afs load  ${fdtfile} ${fdt_addr}; \
if test $? -eq 1; then echo Loading ${fdt_alt_name} instead of ${fdtfile}; \
afs load ${fdt_alt_name} ${fdt_addr}; fi; fdt addr ${fdt_addr}; fdt resize; \
booti ${kernel_addr} - ${fdt_addr};