[meta-freescale] Kernel 3.5.7 hangs
RAA013 at freescale.com
Tue Nov 5 12:43:22 PST 2013
I think you might be seeing issues with the new toolchain 4.8. There were some ARM errata workarounds in defconfig in 3.10 to fix issues with new gcc toolchain. Also the new eglibc has performance issues we are patching in our beta release.
Try building on 4.7 toolchain which was I believe the same one that 3.5.7 was tested against.
Best to switch to 3.10 as that will go GA not 3.5.7 which was stopped to move to an LTS kernel. I think 3.10.9 is almost ready to be fully upstreamed into dora branch. So until it is merged, use the master branch.
From: meta-freescale-bounces at yoctoproject.org [mailto:meta-freescale-bounces at yoctoproject.org] On Behalf Of Doug Schwanke
Sent: Tuesday, November 05, 2013 12:19 PM
To: meta-freescale at yoctoproject.org
Subject: [meta-freescale] Kernel 3.5.7 hangs
I am trying to build kernel 3.5.7 Yocto 'Dora' using imx6qsabresd. Everything builds without an error and I get a new uImage, as shown below. However, the kernel hangs while starting up. Some folks in the imx community have tried using CONFIG_EARLY_PRINTK=y, but there are no messages printed by kernel.
# I first clean before changing versions in order to clean up the 3.0.35 files...
bitbake -c cleansstate linux-imx
# change from 3.0.35 to 3.5.7 by adding the following line to my local.config
PREFERRED_VERSION_linux-imx_mx6 = "3.5.7"
# rebuild kernel
# rebuild image
tmp/deploy/images/imx6qsabresd/u-boot.imx -> u-boot-imx6qsabresd-v2013.10-r0.imx*
tmp/deploy/images/imx6qsabresd/u-boot-imx6qsabresd.imx -> u-boot-imx6qsabresd-v2013.10-r0.imx*
tmp/deploy/images/imx6qsabresd/uImage -> uImage--3.5.7-r0-imx6qsabresd-20131104212852.bin
tmp/deploy/images/imx6qsabresd/uImage-imx6qsabresd.bin -> uImage--3.5.7-r0-imx6qsabresd-20131104212852.bin
tmp/deploy/images/imx6qsabresd/uImage-imx6q-sabresd.dtb -> uImage--3.5.7-r0-imx6q-sabresd-20131104212852.dtb
U-Boot 2013.10 (Nov 04 2013 - 09:49:56)
CPU: Freescale i.MX6Q rev1.2 at 792 MHz
Reset cause: POR
DRAM: 1 GiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
*** Warning - bad CRC, using default environment
No panel detected: default to HDMI
Display: HDMI (1024x768)
Net: FEC [PRIME]
Hit any key to stop autoboot: 0
mmc1 is current device
** Unable to read file boot.scr **
4686224 bytes read in 218 ms (20.5 MiB/s)
Booting from mmc ...
46128 bytes read in 20 ms (2.2 MiB/s)
## Booting kernel from Legacy Image at 12000000 ...
Image Name: Linux-3.5.7-1.0.0+g3285970
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4686160 Bytes = 4.5 MiB
Load Address: 10008000
Entry Point: 10008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 18000000
Booting using the fdt blob at 0x18000000
Loading Kernel Image ... OK
Using Device Tree in place at 18000000, end 1800e42f
Starting kernel ...
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