+ "nand_boot=echo Booting from nand; " \
+ "if test ${upgrade_available} -eq 1; then " \
+ "if test ${bootcount} -gt ${bootlimit}; " \
+ "then " \
+ "setenv upgrade_available 0;" \
+ "setenv ${partitionset_active} true;" \
+ "if test -n ${A}; then " \
+ "setenv partitionset_active B; " \
+ "env delete A; " \
+ "fi;" \
+ "if test -n ${B}; then " \
+ "setenv partitionset_active A; " \
+ "env delete B; " \
+ "fi;" \
+ "saveenv; " \
+ "fi;" \
+ "fi;" \
+ "echo set ${partitionset_active}...;" \