how to extend the flash size from 16MB to 64MB

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how to extend the flash size from 16MB to 64MB

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yehudamarko
Contributor I

hello,

we are using the fsl B4860  QDS . with vxworks RTOS.

As youknow the BSP of QDS defines only 16MB of 128 MB flash . There are another 16MB flash banks whose mapping is controlled by appropriate DIP-switch. This gives the possibility to switch between Uboot and other images to run.

The question is:

Is it possible to use another couple of 16MB flash banks as a TFFS device, and thus seriously enlarge the flash size?

re,

yuda

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206 Views
bpe
NXP TechSupport
NXP TechSupport

What I see in QorIQ SDK 1.8 for your board, is that  128MB NOR Flash space is mapped. That means, all VBANKs are visible to u-Boot.

Of them, you can use only a half due to a board-level hardware issue. Compare your u-Boot configuration header to the SDK default if your

one sets a different mapping. The key definition there is CONFIG_SYS_NOR_AMASK.

For OS-level settings, consult at your OS vendor/supporter.


Have a great day,
Platon

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