Hi,
I want to run my own application which is BSP, which is meant for testing my hardware. This BSP resides in USB. I can specify boot from USB option to re-direct the boot-up sequence to USB. However how to execute my application once BIOS execution is done and then how to execute GRUB from my application.
Boot up from USBRun my application (BSP) between BIOS and GRUB
Page 1 of 1
New Topic/Question-
This topic is locked
2 Replies - 863 Views - Last Post: 15 February 2010 - 08:11 PM
MultiQuoteReplies To: Boot up from USB
#2
debjit625
- D.I.C Regular
-
Reputation: 52
- Posts: 452
- Joined: 06-September 08
Re: Boot up from USB
Posted 13 February 2010 - 05:11 AM
What you are creating is a system level software,to start executing the code you will load it just like any other operating system is loaded.And its like this,at first when you switch your computer the processor load some instruction kept on the ROM yes (its the BIOS CMOS CHIP),the instruction just checks the hardware if they are ok,then it search for a storage device like hard drive and it loads the first 512 bytes (1st sector) into the memory ,this 1st sector contains
boot loader its some instruction that will be executed by the processor now when the BIOS have loaded the boot sector into the memory the bios is done with its work and the processor start executing the instruction loaded into the memory ,and these instructions loads further code or instructions of your application.
So you have to create a boot loader to load your application,in your case this boot loader will be kept on USB storage device 1st sector.
Good Luck
boot loader its some instruction that will be executed by the processor now when the BIOS have loaded the boot sector into the memory the bios is done with its work and the processor start executing the instruction loaded into the memory ,and these instructions loads further code or instructions of your application.
So you have to create a boot loader to load your application,in your case this boot loader will be kept on USB storage device 1st sector.
Good Luck
Was This Post Helpful?
0
Page 1 of 1
| 