[U-Boot-Users] IDE LBA48 support and vsprintf 64bit support

[VanBaren, Gerald (AGRE)]

> -----Original Message-----
> From: u-boot-users-admin at lists.sourceforge.net
> [mailto:u-boot-users-admin at lists.sourceforge.net]On Behalf Of Rune
> Torgersen
> Sent: Friday, February 27, 2004 11:57 AM
> To: wd at denx.de
> Cc: u-boot-users at lists.sourceforge.net
> Subject: RE: [U-Boot-Users] IDE LBA48 support and vsprintf
> 64bit support
>
>
>
> > Ummm... actually I don't like to increase the  memory 
> > footprint  for all  systems for a feature which nearly nobody
> > ever needs. I think it should be possible to print the large
> > capacities without  using  such data formats (I guess you
> > don't need 64 bit precision).
>
> I guess I can add some #ifdefs around my code (especially the 64bit
> printing stuff)
> Hex isn't a problem, and decimal is not a problem as long as
> the disk is
> less than 548GB
>
> For the IDE stuff itself, without 64 bit the IDE can handle
> drives up to
> 548GB (max sector numbers possible in 32 bit). What if I have a config
> option to use 64-bit sector numbers, and default to using 32-bit?
>
> (I needed this since our board does have a 250GB disk attached, and I
> wanted to see the real capacity when booting)

For disks, you can scale the value by 1e9 and then print in decimal.  I'm pretty sure this is what you would be doing anyway, no?

The 64 bit format:
  printf("Disk size %Ld\n", size);
becomes:
  printf("Disk size %dGB\n", (unsigned int)(size / (1000000000)));
or:
  printf("Disk size %dMB\n", (unsigned int)(size / (1000000)));

(I'm intentionally scaling disk drive GBs/MBs, not computer geek GBs/MBs)

Am I missing something?  How many 64 bit numbers are you trying to print?  If it is just a couple in unique circumstances, scale & print.

gvb


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