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[John Rigby <john.rigby@xxxxxxxxxxxxx>]

I believe the rational is that you really do need to pick a partition
before reading.  If booting needs a certain partition then the boot
script needs the mmc part command in it.

** Changed in: u-boot-linaro
   Importance: Undecided => Low

** Changed in: u-boot-linaro
       Status: Confirmed => Won't Fix

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https://bugs.launchpad.net/bugs/776856

Title:
  uboot won't boot until running 'mmc part 0'

Status in Linaro U-Boot:
  Won't Fix

Bug description:
  U-Boot 2011.03 (Apr 20 2011 - 07:37:43)
  Using the test automation we have, I have a pandaboard attached to my laptop trying to deploy a new image, and using commands sent to uboot over the serial console to get it booted:
  U-Boot 2011.03 (Apr 20 2011 - 07:37:43)

  CPU  : OMAP4430
  Board: OMAP4 Panda
  I2C:   ready
  DRAM:  1 GiB
  MMC:   OMAP SD/MMC: 0
  Using default environment

  In:    serial
  Out:   serial
  Err:   serial
  Hit any key to stop autoboot:  0 
  Panda # mmc init
  Panda # setenv bootcmd 'fatload mmc 0:5 0x80200000 uImage; fatload mmc 0:5 0x81600000 uInitrd; bootm 0x80200000 0x81600000'
  Panda # setenv bootargs ' console=tty0 console=ttyO2,115200n8 root=LABEL=testrootfs rootwait ro earlyprintk fixrtc nocompcache vram=32M omapfb.vram=0:8M mem=463M ip=none'
  Panda # boot
  MMC: block number 0x1 exceeds max(0x0)
  ** Can't read from device 0 **

  ** Unable to use mmc 0:5 for fatload **
  MMC: block number 0x1 exceeds max(0x0)
  ** Can't read from device 0 **

  ** Unable to use mmc 0:5 for fatload **
  Wrong Image Format for bootm command
  ERROR: can't get kernel image!
  Panda # 
  Panda # mmc rescan
  Panda # boot
  MMC: block number 0x1 exceeds max(0x0)
  ** Can't read from device 0 **

  ** Unable to use mmc 0:5 for fatload **
  MMC: block number 0x1 exceeds max(0x0)
  ** Can't read from device 0 **

  ** Unable to use mmc 0:5 for fatload **
  Wrong Image Format for bootm command
  ERROR: can't get kernel image!
  Panda # mmc part 0

  Partition Map for MMC device 0  --   Partition Type: DOS

  Partition     Start Sector     Num Sectors     Type
      1		        63	    106432	 c
      2		    106496	   2887680	83
      3		   2994176	   4960256	 5 Extd
      5		   2996224	    143360	 b
      6		   3141632	   4120576	83
      7		   7264256	    690176	 b
  Panda # boot

  As you can see, mmc rescan doesn't have any effect, but as soon as I
  run 'mmc part 0' I can magically boot.  This didn't happen in the
  maverick version of uboot (which I have actually running on the master
  image in the lab)

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