Some Problems and Solutions encountered during Linux + ramdisk migration

1.

Uncompressing Linux ...................................... ..........................Done,Booting The Kernel.

It won't move.

 

Solution: Change console =/dev/ttysac0 to console = ttysac0.

 

2. the startup parameter initrd = 0x30800000,0x20000, 0x30800000 indicates the address of ramdisk in ram, and 0x20000 indicates the size of ramdisk.

 

3. failed to execute/linuxrc; kernel panic no init fo...

Cause: initrd = 0x30800000,0x20000; 0x20000 is smaller than the actual size of ramdisk

 

4. ramdisk: incomplete write (-28! = 32768) 4194304
Ramdisk: ran out of compressed data
Invalid compressed format (ERR = 1)
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root FS via NFS, trying floppy.
VFS: cannot open root device "" or unknown-block (2, 0)
Please append a correct "root =" Boot Option
Kernel panic-not syncing: VFS: Unable to mount root FS on unknown-block (2, 0)

In the above case, the reason is that the materials have not been modified.
Driver device->
Block device->
(4096) default RAM disk size (Kbytes)
Change 4096 to 8192

 

5. Error: Unrecognized/unsupported machine ID (r1 = 0x33f60264 ).

Solution: refer to my csdn blog

 

6. Kernel panic-not syncing: attempted to kill Init!

One of the reasons is that the kernel is not compiled by the compiler with Eabi, while the busybox that creates rootfs is compiled by the compiler with Eabi.

 

7. problems that may occur during compilation of busybox

You will encounter the following problems::
Applets/Applets. c:20:2: Error:# Warning static linking against glibc produces buggy executables
Applets/Applets. c:21:2: Error:# Warning (glibc does not well with LD -- GC-sections ).
Applets/Applets. c:22:2: Error:# Warning see sources.redhat.com/bugzilla/show_bug.cgi? Id = 3400
Applets/Applets. c:23:2: Error:# Warning note that glibc is unsuitable for static linking anyway.
Applets/Applets. c:24:2: Error:# Warning if you still want to do it, remove-wl, -- GC-Sections
Applets/Applets. c:25:2: Error:# Warning from top-level makefile and remove this warning.
Make[1]:***[Applets/Applets. o]Error 1

This warning is defined inApplets/Applets. c. Comment out this warning.This warning tells you that it is best to use uclibc for compilation, instead of using glibc because glibc is large, busybox is used in many embedded systems, so there are such requirements.