[Uboot][Linux-OS]How to boot zImage (os image) using uboot

There are two ways to boot zImage using uboot 1. Using mkImage command, convert zImage to uImage 2. Enable bootz feature in the uboot board config file Add “#define CONFIG_CMD_BOOTZ “in the corresponding board config file and build the new uImage    

[U-boot]How to redirect prints to serial console in uboot

In uboot , there is environment variable called stdout . Set its value to serial  setenv stdout serial Refer common/console.c in uboot directory 

[U-Boot]overlapping section error in u-boot compilation

Error in u-boot compilation “section .bootpg lma 0xeffff000 overlaps previous sections” Reason  –  The text base address macro ,  CONFIG_SYS_TEXT_BASE is using default value . Solution – Define the macro CONFIG_SYS_TEXT_BASE This macro may be defined under some compiler directives. So search for this macro in the config file (eg: include/configs/board_name.h) . If it is there

[Uboot] About u-boot

To know about U boot (Universal boot loader) ,  this below link is good http://www.stlinux.com/u-boot Also you can refer http://www.cs.tau.ac.il/telux/lin-club_files/linux-boot/slide0000.htm

[Fedora][Ubuntu][Linux admin]How to configure yum (in fedora) and apt-get (in ubuntu) with proxy

Steps to configure yum in fedora  Edit yum.conf in /etc folder . Update proxy (eg: proxy=http://ipaddress:port)  Comment baseurl in fedora.repo file in the directory, /etc/yum.repos.d  Export http_proxy from terminal (export http_proxy=http://ipaddress:port).  eg: http_proxy=http://192.168.100.100:80. Steps to configure apt-get in Ubuntu Create the file /etc/apt/apt.conf if not present Add the following line Acquire::http::proxy “http://ipaddress:port”; Note that ipaddress