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  1. Jul 14, 2010
  2. Jul 13, 2010
  3. Jul 12, 2010
    • Scott Wood's avatar
      NAND: formatting cleanups from env.oob support · 53504a27
      Scott Wood authored
      
      Change if (ok) {
      	bunch of stuff
      } else {
      	error
      }
      
      to
      
      if (error) {
      	get out
      }
      
      proceed with bunch of stuff
      
      Plus a few whitespace cleanups.
      
      Signed-off-by: default avatarScott Wood <scottwood@freescale.com>
      53504a27
    • Ben Gardiner's avatar
      NAND: environment offset in OOB (CONFIG_ENV_OFFSET_OOB) · c9f7351b
      Ben Gardiner authored
      This is a re-submission of the patch by Harald Welte
      <laforge@openmoko.org> with minor modifications for rebase and changes
      as suggested by Scott Wood <scottwood@freescale.com> [1] [2].
      
      This patch enables the environment partition to have a run-time dynamic
      location (offset) in the NAND flash.  The reason for this is simply that
      all NAND flashes have factory-default bad blocks, and a fixed compile
      time offset would mean that sometimes the environment partition would
      live inside factory bad blocks. Since the number of factory default
      blocks can be quite high (easily 1.3MBytes in current standard
      components), it is not economic to keep that many spare blocks inside
      the environment partition.
      
      With this patch and CONFIG_ENV_OFFSET_OOB enabled, the location of the
      environment partition is stored in the out-of-band (OOB) data of the
      first block in flash. Since the first block is where most systems boot
      from, the vendors guarantee that the first block is not a factory
      default block.
      
      This patch introduces the 'nand env.oob' command, which can be called
      from the u-boot command line. 'nand env.oob get' reads the address of
      the environment partition from the OOB data, 'nand env.oob set
      {offset,partition-name}' allows the setting of the marker by specifying
      a numeric offset or a partition name.
      
      [1] http://article.gmane.org/gmane.comp.boot-loaders.u-boot/43916
      [2] http://article.gmane.org/gmane.comp.boot-loaders.u-boot/79195
      
      
      
      Signed-off-by: default avatarBen Gardiner <bengardiner@nanometrics.ca>
      Acked-by: default avatarHarald Welte <laforge@gnumonks.org>
      c9f7351b
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