Thanks!
--- On Tue, 3/3/09, Rajashekhara, Sudhakar <sudhakar....@ti.com> wrote: > From: Rajashekhara, Sudhakar <sudhakar....@ti.com> > Subject: RE: uboot upgrade on dm6467 > To: "gb...@yahoo.com" <gb...@yahoo.com>, > "davinci-linux-open-source@linux.davincidsp.com" > <davinci-linux-open-source@linux.davincidsp.com> > Date: Tuesday, March 3, 2009, 10:05 PM > Try the following to re-write the NAND with different u-boot > image: > > 1. Read from NAND offset 0x20000 to some RAM address (For > Ex: 0x82000000). > 2. Erase the NAND completely with "nand erase" > command from u-boot. > 3. Download the latest u-boot.bin file through the Ethernet > using tftp command. This will get downloaded to some RAM > address (Ex: 80700000). > 4. Calculate the number of pages the new u-boot.bin will > occupy using the formaula: (file_size/NAND_PAGE_SIZE) + 1. > Here NAND_PAGE_SIZE for DaVinci-HD is 2048. > 5. Write the downloaded u-boot.bin to NAND offset 0x20800. > 6. Modify the contents of RAM (@ 0x82000000) which has the > contents from NAND offset 0x20000, so that offset 0x82000008 > reflects the correct number of pages across which u-boot.bin > spans. > 7. Write back the contents modified above to NAND offset > 0x20000. > 8. Restart the board. Board will now boot the latest > u-boot. > > Sometimes, when you read back the NAND, though U-Boot > reports ERROR, read will be successful. This can be verified > by dumping the contents of the memory. > > Regards, Sudhakar > ________________________________________ > From: > davinci-linux-open-source-boun...@linux.davincidsp.com > [davinci-linux-open-source-boun...@linux.davincidsp.com] On > Behalf Of gather bzbz [gb...@yahoo.com] > Sent: Wednesday, March 04, 2009 8:07 AM > To: davinci-linux-open-source@linux.davincidsp.com > Subject: uboot upgrade on dm6467 > > The PSP document suggests "nand read 82000000 0x20000 > 0x800". However, this command failed, when I tried to > upgrade u-boot from the running u-boot. > > *********************************************** > DM6467 EVM # nand read 82000000 20000 800 > > NAND read: device 0 offset 0x20000, size 0x800 > 2048 bytes read: ERROR > DM6467 EVM # > *********************************************** > > Did somebody successfully upgrade the u-boot from a running > u-boot, please share some lights! > > > > > > _______________________________________________ > Davinci-linux-open-source mailing list > Davinci-linux-open-source@linux.davincidsp.com > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
