RE: [cbootimage PATCH v1 6/8] Add new configuration keyword "ReSignBl"

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> -----Original Message-----
> From: Stephen Warren [mailto:swarren@xxxxxxxxxxxxx]
> Sent: Monday, September 21, 2015 3:10 PM
> To: Jimmy Zhang
> Cc: Allen Martin; Stephen Warren; linux-tegra@xxxxxxxxxxxxxxx
> Subject: Re: [cbootimage PATCH v1 6/8] Add new configuration keyword
> "ReSignBl"
> 
> On 09/02/2015 03:19 PM, Jimmy Zhang wrote:
> > In case an image is updated after initial signing, use "ReSignBl"
> > to re-generate aes hash and pkc pss signatures if PkcKey is present.
> >
> > For example:
> >
> > Define re-sign.cfg as below:
> >     PkcKey = rsa_priv.pem, --save;
> >     ReSignBl;
> >
> > Run command below to re-sign image:
> >     $ cbootimage -s tegra210 --update re-sign.cfg image
> > image-re-signed
> 
> Is this to support the case where someone just dd's a new bootloader into an
> existing flash image? Why not just rebuild the flash image from scratch using
> existing features?

This is used in case certain blocks of bootloader are only reserved during initial build but filled up by another utility at later stage. 
  
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