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s-boot on Tizen RD-PQ device

Hi to all, in tizen.org I read:

 

"Boot loader is a small piece of software that is required to perform the basic hardware and 
peripheral initialization and load the kernel to RAM. For the Tizen platform, the boot loader 
comes in two parts. The first part is the primary boot loader and the second part is the 
secondary boot loader. The primary boot loader is the Samsung proprietary boot loader and is 
also called s-boot. The secondary boot loader is the open source boot loader u-boot, which is 
customized further for the Tizen platform. "
 
Can you tell me how to start download mode with s-boot and not with u-boot? Thank you!
Edited by: Brock Boland on 17 3월, 2014 Reason: Paragraph tags added automatically from tizen_format_fix module.
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Responses

1 댓글
Peter Wegner
Nice idea, but... s-boot only check u-boot... It's an Security concept... also known as Bootloader chain... Bootloader 1 checks Boot 2 checks Boot 3, checks Boot 4 etc... If booth are erased or damaged... result is this: https://developer.tizen.org/forums/general-support/sec-s5pc210-test-bd Then you have an bigger problem... So extreme Caution if you play with BootloaderS. Best Regards