PythonQ 248-8XX Dokumentacja Pobierz pdf (Strona 200)

Uncompress ramdisk image

bash$ gunzip -v ramdisk.gz

ramdisk.gz: 66.6% -- replaced with ramdisk

Mount ramdisk image

As root:

bash# mkdir -p /mnt/tmp

bash# mount -o loop ramdisk /mnt/tmp

Create new ramdisk image, say 8 MB big:

bash$ dd if=/dev/zero of=new_ramdisk bs=1024k count=8

bash$ /sbin/mke2fs -F -m0 new_ramdisk

bash$ /sbin/tune2fs -c 0 -i 0 new_ramdisk

As root:

bash# mkdir -p /mnt/new

bash# mount -o loop new_ramdisk /mnt/new

Copy files from old ramdisk to new ramdisk:

As root:

bash# cd /mnt/tmp

bash# find . -depth -print | cpio -VBpdum /mnt/new

Now you can add, remove, or modify files in the /mnt/new directory. If you are done, you can re-pack

the ramdisk into a U-Boot image:

Unmount ramdisk images:

As root:

bash# umount /mnt/tmp

bash# umount /mnt/new

Compress new ramdisk image

bash$ gzip -v9 new_ramdisk

ramdisk: 66.6% -- replaced with new_ramdisk.gz

Create new U-Boot image (new-uRamdisk)

bash$ mkimage -T ramdisk -C gzip -n 'New Simple Embedded Linux Framework' \

> -d new_ramdisk.gz new_uRamdisk

Image Name: Simple Embedded Linux Framework

Created: Sun May 4 13:23:48 2003

Image Type: PowerPC Linux RAMDisk Image (gzip compressed)

Data Size: 1400121 Bytes = 1367.31 kB = 1.34 MB

Load Address: 0x00000000

Entry Point: 0x00000000

Remember that Linux by default supports only ramdisks up to a size of 4 MB. For bigger ramdisks, you

have to either modify your LInux kernel configuration (parameter CONFIG_BLK_DEV_RAM_SIZE in the

"Block devices" menue), or pass a "ramdisk_size=" boot argument to the Linux kernel.

14.5. RTAI

14.5.1. Conflicts with asm clobber list

Question:

14.5.1. Conflicts with asm clobber list 200

1 2 ... 195 196 197 198 199 200 201 202 203 204 205 ... 209 210

Komentarze do niniejszej Instrukcji

Brak uwag

PythonQ 248-8XX Dokumentacja Strona 200

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla System spawalniczy PythonQ 248-8XX