Hi Rijurekha Sen,

On 06/03/2016 06:05 PM, Rijurekha Sen wrote:
> Hi,
> I compiled the demo according to 
> https://github.com/skalk/genode/blob/i.MX53_tablet_demo/os/src/server/vmm/imx53/README.
>  Next to run the demo in the SABRE tablet, I followed the instruction in 
> http://genode-main.narkive.com/qJXUD6w5/arm-trustzone-demo-in-i-mx53-sabre-tablet.
>  Created the u-boot.imx using 
> https://eewiki.net/display/linuxonarm/i.MX53+Quick+Start#i.MX53QuickStart-Bootloader:U-Boot
>  for the step 2)
> 2) sudo dd if=$(U-BOOT-DIR)/u-boot.imx of=/dev/sdb seek=2 bs=512 conv=fsync
> 
> But when I put in the MMC card in the tablet with the SD card in it and 
> restart the tablet, it just powers on to the default Android which it came 
> with. How to get the u-boot prompt, as mentioned in step 4)?
> 4) After power up the tablet, U-BOOT prompt (u-boot from MMC is not used), I 
> did as follows: MX53-SMD U-Boot > ext2load mmc 0:1 0x70800000 image.bin
> How to get this u-boot prompt?
> 
> https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwiFxYaXlozNAhUF7RQKHf9VDWAQFggdMAA&url=https%3A%2F%2Fwww.element14.com%2Fcommunity%2Fservlet%2FJiveServlet%2FdownloadBody%2F49623-102-1-259642%2FFreescale.User_Guide_5.pdf&usg=AFQjCNEmNyxDsrJeUznq6s33mHqfjrerLA&sig2=5aZI5zuWo4sxFal4k4Z_WQ
>  has a chapter 3 on various boot options. 
> http://cache.freescale.com/files/32bit/doc/user_guide/IMX53SMDHUG.pdf shows 
> the location of the switches sw26 and sw28 at the back of the board. Does 
> that mean, I should open the back cover of the tablet to change these? Is 
> this what 
> http://genode-main.narkive.com/qJXUD6w5/arm-trustzone-demo-in-i-mx53-sabre-tablet
>  did?
> 
> Want to verify the correct thing to do as the tablet is expensive.

exactly, you have to toggle the boot-switches according to Freescales
documentation of this board to boot from SD-card instead of internal
MMC. You can only access those SW26/28 switches by opening the tablet's
case.

Regards
Stefan

> 
> Thanks!
> Riju
> 
> 
> 
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-- 
Stefan Kalkowski
Genode Labs

http://www.genode-labs.com/ ยท http://genode.org/

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What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
patterns at an interface-level. Reveals which users, apps, and protocols are 
consuming the most bandwidth. Provides multi-vendor support for NetFlow, 
J-Flow, sFlow and other flows. Make informed decisions using capacity 
planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e
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