From mboxrd@z Thu Jan 1 00:00:00 1970 From: raajesh.n at indiatimes.com Date: Mon, 28 Apr 2008 12:07:19 +0530 (IST) Subject: [U-Boot-Users] Newbie in U-Boot, Some Queries Message-ID: <253166975.210981209364639412.JavaMail.root@mbv4.indiatimes.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de HI , I am newbie to U-Boot, I have a customized board with u-boot with it, I have seen through top level makefile of U-Boot.Below stated is what I have observed from makefile. 1. First initialization of processor (ARM922t in my case) is done in CPU folder with Startup.S where this assembly routine will call low_level_init code for initialization of RAM of customized board. 2. Further I have observed rest all code which are required for boot-up is made as library and compiled at once. I would like to know how the code flow of U-Boot takes place , which are all the files which will be called in sequence while boot operation takes place, as far I have seen the code, Startup.S is one which starts first clearing Stack & PC which will further calls low_level_Init, I am unable to know how U-Boot works further from this place. I would request U-Boot users to share there knowledge in explaining me how the code flow of U-Boot takes place, which will help me in finishing my project where RAM & Flash is changed. Best Regards, Rajesh