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i.MX6SX FCB for NAND Boot.

Question asked by Satoshi Shimoda on Sep 30, 2015
Latest reply on Sep 30, 2015 by igorpadykov

Hi community,

 

We have some questions about i.MX6SX NAND Boot.

Please see our questions as below.

 

[Q1]

Please see Figure 8-5 in IMX6SXRM Rev.0.

i.MX6SX retry if FCB is not found until Read Count becomes same value as Search Count.

Next, please see chapter 8.5.2.3.

It says "so in case the first NAND block becomes corrupted, the ROM will find its copy in the next NAND block."

So I understand FCB should be copied to all the blocks from first 4k block to n th 4k block. (n = Boot Search Count (BOOT_CFG2[4:3])).

(e.g. FCB should be copied to all the 4k blocks from 1st block to 8th block when BOOT_CFG2[4:3]=11)

Is this correct?

 

[Q2]

We understand MFG-Tools programs FCB and DBBT to NAND device.

Then, if the answer to Q1 is "correct", MFG-Tool should programs FCB to multiple blocks.

MFG-Tool supports it? or MFG-Tool can program FCB to only first 4k block?

 

 

Best Regards,

Satoshi Shimoda

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