Complete description of startup information of Embedded Linux

The startup information of the embedded Linux operating system is fully annotated-general Linux technology-Linux programming and kernel information. The following is a detailed description. Source: 21IC China Electronics network Author: Yu Tao

　　 Summary

Here we will discuss the comment on the output information of the Startup Process of the embedded linux system. Through our discussion, you will have a definite understanding of what appeared during the startup of Embedded linux, what you used to feel familiar with, but what seems to be different, and the ins and outs of the output information.

The startup information of Embedded linux is worth studying. It presents a thumbnail to us to help us better understand the linux kernel.

As an embedded system developer, you must have encountered the following scenarios:

I saw a post in a forum with information about the startup of the embedded linux development board. Then I will discuss the problems during the startup process in this post. A random example is as follows:

CODE: Linux version 2.4.20-uc0 (root @ Local) (gcc version 2.95.3 20010315 (release) (ColdFire patches-20010318 from http: // f (UClinux XIP and shared lib patches from http://www.snapgear.com/) # June 1 8 00:58:31 CST 2003 Processor: Samsung s34510b revision 6 Architecture: SNDS100 On node 0 totalpages: 4096 Zone (0): 0 pages. Zone (1): 4096 pages. Zone (2): 0 pages. Kernel command line: root =/dev/rom0 Calibrating delay loop... 49.76 BogoMIPS Memory: 16 MB = 16 MB total Memory: 14348KB available (1615 K code, 156 K data, 40 K init) Dentry cache hash table entries: 2048 (order: 2, 16384 bytes) Inode cache hash table entries: 1024 (order: 1, Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes) Page-cache hash table entries: 4096 (order: 2, 16384 bytes) POSIX conformance testing by uniix Linux NET4.0 in Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket Starting kswapd Samsung s34510 Serial driver version 0.9 () with no serial options en Abled TtyS00 at 0x3ffd000 (irq = 5) is a 89c4510b TtyS01 at 0x3ffe000 (irq = 7) is a 89c451 Blkmem copyright 1998,1999 D. Jeff Dionne Blkmem copyright 1998 kenth Albanowski Blkmem 1 disk images: 1: BE558-1A5D57 [VIRTUAL BE558-1A5D57] (RO) RAMDISK driver initialized: 16 RAM disks of 1024 K size 1024 blocksize Samsung s34510 Ethernet driver version 0.1) Eth0: 00: 40: 95: 36: 35: 34 NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP IP: routing cache hash table of 512 buckets, 4 Kbytes TCP: Hash tables configured (established 1024 bind 1024) VFS: Mounted root (romfs Freeing init memory: 40 K