mx51evk booting stops at mountall

Adding the following filesystem supports can fix the the problem and get the booting into console.

CONFIG_TMPFS
CONFIG_DEVTMPFS
CONFIG_DEVTMPFS_MOUNT

The patch is here.

diff --git a/arch/arm/configs/mx51_defconfig b/arch/arm/configs/mx51_defconfig
index 30a0d59..25d5f58 100644
--- a/arch/arm/configs/mx51_defconfig
+++ b/arch/arm/configs/mx51_defconfig
@@ -40,6 +40,8 @@ CONFIG_IP_PNP_DHCP=y
 # CONFIG_INET_LRO is not set
 # CONFIG_IPV6 is not set
 # CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
 # CONFIG_STANDALONE is not set
 CONFIG_CONNECTOR=y
 CONFIG_BLK_DEV_LOOP=y
@@ -141,6 +143,7 @@ CONFIG_ZISOFS=y
 CONFIG_UDF_FS=m
 CONFIG_MSDOS_FS=m
 CONFIG_VFAT_FS=y
+CONFIG_TMPFS=y
 CONFIG_CONFIGFS_FS=m
 CONFIG_NFS_FS=y
 CONFIG_NFS_V3=y

Not a kernel bug but a packaging one

John, I confirm that upstart can't work without devtmpfs and it used not to work without devtmpfs_mount either (which gives a boot time saving anyway); could you enable these two? The tmpfs one seems like a good idea, albeit I don't know what problem it solves

I have to enable tmpfs, otherwise it can not reach console either. The debug log tells /var/run is mounted as tmpfs. And I saw the following line in /etc/init/mounted-varrun.conf.

start on mounted MOUNTPOINT=/var/run TYPE=tmpfs

Accepted linux-linaro into maverick-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

This bug was fixed in the package linux-linaro - 2.6.35-1008.15

---------------
linux-linaro (2.6.35-1008.15) maverick-proposed; urgency=low

  [ Robert Nelson ]

  * SRU: Fix DVI for Beagle xM rev A3
    - LP: #663642

linux-linaro (2.6.35-1008.14) maverick-proposed; urgency=low

  [ Andy Whitcroft ]

  * reduce disk usage during buildd builds
    - LP: #645653

  [ Enric Balletbo i Serra ]

  * ARM: igepv2: Adding support for VBUS and overcurrent
    - LP: #651589
  * ARM: igepv2: Fix and improve LED handling
    - LP: #654582
  * ARM: igepv2: Introduce function to dectect HW version
    - LP: #654586
  * ARM: igepv2: Fix handling of GPIOs for WLAN-BT combo
    - LP: #654590
  * ARM: igepv2: Add i2c eeprom driver to read EDID
    - LP: #654594
  * ARM: igepv2: Remove VMMC2 regulator
    - LP: #654595

  [ Maurus Cuelenaere ]

  * SAUCE: ARM: OMAP3: Add S-Video output to IGEPv2 board
    - LP: #607250

  [ Upstream Stable ]
  * Linux 2.6.35.7

  [ Upstream MMC updates ]

  * mmc: recognize CSD structure
  * mmc: split mmc_sd_init_card()
  * mmc: implement SD-combo (IO+mem) support
  * sdhci: remove useless set_clock() check
  * sdhci: 8-bit data transfer width support
  * sdhci: don't assign mmc->caps at SDHCI directly
  * mmc: only set blockaddressed for > 2GiB cards
  * mmc: omap: fix for bus width which improves SD card's peformance.
  * sdhci-pltfm: switch to module device table matching
  * sdhci-pltfm: reorganize Makefile entries to support SoC devices
  * sdhci-pltfm: add support for CNS3xxx SoC devices
  * omap hsmmc: fix processing of all dma interrupts as block completion
  * sdhci: add regulator support
  * sdhci: add no hi-speed bit quirk support
  * mmc: avoid getting CID on SDIO-only cards
  * omap_hsmmc: remove unused local `state'
  * omap hsmmc: fix a racing case between kmmcd and omap_hsmmc_suspend
  * drivers/mmc/host/imxmmc.c: adjust confusing if indentation
  * mmc: sdhci-pltfm: Add structure for host-specific data
  * mmc: sdhci-pltfm: move .h file into appropriate subdir
  * mmc: sdhci: introduce get_ro private write-protect hook
  * mmc: sdhci_pltfm: pass more data on custom init call
  * mmc: sdhci-of-esdhc: factor out common stuff
  * mmc: sdhci-pltfm: add -pltfm driver for imx35/51
  * mmc: quirk fix for timeout problem
  * babbage: esdhc device registration
  * babbage: update mx51_defconfig
    - LP: #656966

  [ Upstream ARM fixes ]

  * Make PTRACE_SINGLESTEP work with user helpers
  * ARM: fix section mismatch warnings in Versatile Express
  * ARM: use memblock to remove memory from available memory
  * video: omap: vram: remove from normal memory
    - LP: #627779

  [ John Rigby ]
  * LINARO: update configs
    - LP: #659799

linux-linaro (2.6.35-1007.13) maverick; urgency=low

  [ Upstream Ubuntu ]

  * Ubuntu-2.6.35-22.33
  * Ubuntu-2.6.35-22.34

  [ Upstream ARM Fixes ]

  * ARM: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile
  * ARM: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile
  * ARM: add a vma entry for the user accessible vector page
  * ARM: plug a race with the alignment trap handler
  * arm: fix really nasty sigreturn bug
  * ARM: prevent multiple syscall ...