jz2440设备树教程中的配套文件系统启动不了,报错如下,希望得到解决

yaffs: dev is 32505860 name is “mtdblock4” rw
yaffs: passed flags “”
VFS: Mounted root (yaffs filesystem) on device 31:4.
Freeing unused kernel memory: 200K
This architecture does not have kernel memory protection.
Run /linuxrc as init process
Kernel panic - not syncing: Requested init /linuxrc failed (error -2).
CPU: 0 PID: 1 Comm: swapper Not tainted 4.19.0-rc3 #1
Hardware name: SMDK2440
[] (unwind_backtrace) from [] (show_stack+0x10/0x18)
[] (show_stack) from [] (dump_stack+0x18/0x24)
[] (dump_stack) from [] (panic+0xc0/0x25c)
[] (panic) from [] (kernel_init+0x88/0xf8)
[] (kernel_init) from [] (ret_from_fork+0x14/0x34)
Exception stack(0xc3833fb0 to 0xc3833ff8)
3fa0: 00000000 00000000 00000000 00000000
3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3fe0: 00000000 00000000 00000000 00000000 00000013 00000000
—[ end Kernel panic - not syncing: Requested init /linuxrc failed (error -2). ]—
random: fast init done
random: crng init done