Hello, Adam! Thanks for yor answer.
01.04.2014, 02:03, "Adam Lackorzynski" adam@os.inf.tu-dresden.de:
Hi,
On Mon Mar 31, 2014 at 20:07:34 +0400, Tim Komarov wrote:
I use Pandaboard for my practising with Fiasco.OC and L4Linux.
1) I got a problem with booting L4Linux with my own ramdisk. When I use 18 mb ramdisk, I got the following error:
reading image.elf ЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪ
24691072 bytes read ЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪ ## Starting application at 0x81000000 ... ... ,,,[Everything is usual] ,,,
NET: Registered protocol family 17 List of all partitions: No filesystem could mount root, tried: ext3 ext2 ext4 cramfs Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) CPU: 0 PID: 1 Comm: swapper Not tainted 3.13.0-l4 #1 [<0200c624>] (unwind_backtrace+0x0/0xec) from [<020054c0>] (show_stack+0x10/0x14) [<020054c0>] (show_stack+0x10/0x14) from [<0222e63c>] (panic+0x7c/0x1b8) [<0222e63c>] (panic+0x7c/0x1b8) from [<022f2c40>] (mount_block_root+0x25c/0x29c) [<022f2c40>] (mount_block_root+0x25c/0x29c) from [<022f2f44>] (prepare_namespace+0x160/0) [<022f2f44>] (prepare_namespace+0x160/0x1b4) from [<022f2894>] (kernel_init_freeable+0x1) [<022f2894>] (kernel_init_freeable+0x174/0x1b8) from [<0222ccf0>] (kernel_init+0x8/0x118) [<0222ccf0>] (kernel_init+0x8/0x118) from [<020077d4>] (ret_from_fork+0x14/0x20) [<020077d4>] (ret_from_fork+0x14/0x20) from [<00000000>] ( (null)) panic: going to sleep forever, bye
To make ramdisk I simply create a file, write 18 Mb of zeroes to it (with dd), create in that file ext2 partition and copy there files from ramdisk-arm.rd
So, what should I do to get a proper working ramdisk?
Hmm, is the expected ramdisk size big enough? I.e. a ramdisk_size=18500 on the cmdline could help here. (On the other side the according error message is missing, so maybe not.)
Yes, in this case in lua configuration file I put 19000. So, that's not the reason of my problem. Would you be so kind to write an example ( with particular commands ) of making suitable ramdisk for l4linux? May be I am wrong with it... If you did, I would be happy!
2) Even more. If I create 20 mb ramdisk, I got this:
reading image.elf ЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪ
26788224 bytes read ЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪЪ ## Starting application at 0x00000000 ... Ъ
Than the booting hangs. Why so?
Just guessing, loading the ramdisk has overwritten u-boot? So you could try changing the load address in u-boot a bit and see if it changes something? bootstrap will start from anywhere, so you can use the same binary.
I'm going to play with it a bit. Thanks for this idea.
And once again thanks for your answer!
Adam
Adam adam@os.inf.tu-dresden.de Lackorzynski http://os.inf.tu-dresden.de/~adam/
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