[U-Boot] flow of u-boot
can any one know what is the actuall flow of u-boot (ie) execution sequence. pls help me....
Dear ABIRAMA SUNDARI,
In message 22100519.post@talk.nabble.com you wrote:
can any one know what is the actuall flow of u-boot (ie) execution sequence. pls help me....
It starts at the reset entry point, i. e. _start, and then follows the branches...
Best regards,
Wolfgang Denk
hi thanks for your answer. but i am getting you properly.pls tell me the things in detail.....(what you meant by _start ). pls help me ...bcaz i am a fresher for this field...
wd wrote:
Dear ABIRAMA SUNDARI,
In message 22100519.post@talk.nabble.com you wrote:
can any one know what is the actuall flow of u-boot (ie) execution sequence. pls help me....
It starts at the reset entry point, i. e. _start, and then follows the branches...
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de There are two kinds of people, those who do the work and those who take the credit. Try to be in the first group; there is less competition there. - Indira Gandhi _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
ABIRAMA SUNDARI said the following on 02/19/2009 03:56 PM:
thanks for your answer. but i am getting you properly.pls tell me the things in detail.....(what you meant by _start ).
Step 1) Download u-boot code (you can download using git - try google.com to get more help on git) by git clone git://git.denx.de/u-boot.git Step 2) try 'grep -Rw _start .' (help of grep is available in 'man grep')
Regards, Nishanth Menon
ABIRAMA SUNDARI wrote:
hi thanks for your answer. but i am getting you properly.pls tell me the things in detail.....(what you meant by _start ).
_start is a label in the source code. You need to understand what happens when you release your processor from reset: how and where it starts executing code. In terms of u-boot software, the processor will start executing at the _start label (note that u-boot supports many different processors, all different in how they start running).
In terms of detail, the detail _is_ the source code and having us retype it in email isn't useful.
pls help me ...bcaz i am a fresher for this field...
You will have to read u-boot source and your processor's Reference Manual, learn, and through that achieve understanding. It is a zen thing. There is no magic shortcut to the zen of understanding. Sorry.
Best regards, gvb
wd wrote:
Dear ABIRAMA SUNDARI,
In message 22100519.post@talk.nabble.com you wrote:
can any one know what is the actuall flow of u-boot (ie) execution sequence. pls help me....
It starts at the reset entry point, i. e. _start, and then follows the branches...
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de There are two kinds of people, those who do the work and those who take the credit. Try to be in the first group; there is less competition there. - Indira Gandhi _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
participants (4)
-
ABIRAMA SUNDARI -
Jerry Van Baren -
Nishanth Menon -
Wolfgang Denk