set serial console speed to 19200.
MACHINE=hpcsh, MACHINE_CPU=sh3el. bootloader: ftp://f77.nop.or.jp/users/uch/hpcboot/ original patch: ftp://f77.nop.or.jp/users/uch/hpcsh/ sys/sh3/sh3/md_root.c: add #ifdef MEMORY_DISK_DYNAMIC