[U-Boot-Users] 4 MByte ROM & PPCBoot on 8245 using MAP B
Normall the ROM base is 0XFFF00000 which give us a 1MByte addressing range. In the spec of the PPC8245 (MPC8245UM23.pdf) is stated that from 0XFF000000 giving 16MByte of addressing space. The Boot vector of the MPC8245 can be choosen to be either at 0XFFF00100 of at 0X00000100 How can I use a 4MByte FLASH with PPCBoot, knowing that I need to use the whole 4MBytes of available space ---------------------------------------------------------------------------- ------ Benoit Callebaut Software Development Engineer Barco | Control Rooms Noordlaan 5, 8520 Kuurne, Belgium
Tel +32(0)56 36 84 28 Fax +32(0)56 36 86 05
mailto:benoit.callebaut@barco.com http://www.barcocontrolrooms.com
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the address space wraps...look for 'alias'ing in the MPC8245 UM
look at the Musenki code...I believe that used a 4MB flash...but maybe Jim T. can confirm that for sure...
On Monday, February 3, 2003, at 06:24 AM, Callebaut, Benoît wrote:
Normall the ROM base is 0XFFF00000 which give us a 1MByte addressing range. In the spec of the PPC8245 (MPC8245UM23.pdf) is stated that from 0XFF000000 giving 16MByte of addressing space. The Boot vector of the MPC8245 can be choosen to be either at 0XFFF00100 of at 0X00000100 How can I use a 4MByte FLASH with PPCBoot, knowing that I need to use the whole 4MBytes of available space
Benoit Callebaut Software Development Engineer Barco | Control Rooms Noordlaan 5, 8520 Kuurne, Belgium
Tel +32(0)56 36 84 28 Fax +32(0)56 36 86 05
mailto:benoit.callebaut@barco.com http://www.barcocontrolrooms.com
- - DISCLAIMER - - - - - - - -
Unless indicated otherwise, the information contained in this message is privileged and confidential, and is intended only for the use of the addressee(s) named above and others who have been specifically authorized to receive it. If you are not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this message and/or attachments is strictly prohibited. The company accepts no liability for any damage caused by any virus transmitted by this email. Furthermore, the company does not warrant a proper and complete transmission of this information, nor does it accept liability for any delays. If you have received this message in error, please contact the sender and delete the message. Thank you.
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"Callebaut, Benoît" -
Mark Rakes