I'm sorry that the kernel is 2.4.22(linux-14oct2003.tar).
You will have to get the sources from linux-mips.org cvs, using the linux_2_4 tag. From ftp.linux-mips.org:/pub/linux/mips/people/ppopov/2.4 get and apply the usb-nonpci-2.4.24.patch and zboot-2.4.25.patch
Use the pb1550 configuration file already in the sources. You can 'make zImage', then use objcopy to create an srec file you can tftp load into memory, or make zImage.srec that will create the file you can place into flash.
-- Dan
