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SamsungSerial » History » Revision 7

Revision 6 (Denis 'GNUtoo' Carikli, 08/14/2011 01:15 PM) → Revision 7/33 (Denis 'GNUtoo' Carikli, 08/14/2011 01:17 PM)

== Introduction == 
 This page contains information on how to work on a bootloader replacement. 

 == Informations == 
  * The [http://git.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary official u-boot source code] already has support for the S5PC110 SOC(system on a chip) that the Nexus S uses 
  * The S5PC110 has a bootrom 
  * The Nexus S has an usb port with an FSA9480 behind it 


 == TODO == 
  * Look if [http://www.glassechidna.com.au/products/heimdall/ Heimdall] can talk to the bootrom 
  * Serial console: 
   * Use the correct resistors enabling the serial console on the FSA9480 
   * Mesure the voltage of the Nexus S serial port 
   * Make a level shifter to shift the serial port levels  
   * Cross compile microcom or picocom  
   * get a serial console 
  * Find the JTAG 
  * look if the first stage bootloader(after the bootrom) is signed