Announcing the availability of an updated 3.10.17 kernel for RIoTboard.It has been available for quite some time in github repository.
The release has been in sync with official i.MX releases.
All the commits can be found in the repository providing support for LCD and other accessories.
We made our major release on this heavily tested and optimised kernel which carries number of advancements over the older releases.
With new kernel we get the most sought feature, the Device Tree, which contributes to smaller amount of BSP code to merge and greater ability to customise physical devices on new boards.
To setup we need to download a SDCARD image with an updated kernel first.
The updated kernel source can be found here.
We will be downloading the fsl-image-fb-riotboard.sdcard image.
The SVN2652 has
SDCARD image for RIoTboard
Root File System bundle.
Device Tree Binary
First we need to detect the memory device.
I am using in built-in SDCARD adapter in my laptop and it shows SD card as mmcblk device.
# ll /dev/mmc*
brw-rw---- 1 root disk 179, 0 Jul 29 17:19 /dev/mmcblk0
Using a USB-SD adapter shows a sdb device .
# ll /dev/sd*
brw-rw---- 1 root disk 8, 0 Jul 29 11:26 /dev/sda
brw-rw---- 1 root disk 8, 3 Jul 29 11:26 /dev/sda3
brw-rw---- 1 root disk 8, 5 Jul 29 11:26 /dev/sda5
brw-rw---- 1 root disk 8, 6 Jul 29 11:26 /dev/sda6
brw-rw---- 1 root disk 8, 7 Jul 29 11:26 /dev/sda7
brw-rw---- 1 root disk 8, 8 Jul 29 11:26 /dev/sda8
brw-rw---- 1 root disk 8, 16 Jul 29 16:45 /dev/sdb
CAUTION: Most Linux machines shows harddisk as sda. Our device will be mostly something like sdb,sdc ....
We will be carefully selecting our device so that we don't wipe out our SDA harddisk partition
to confirm our device name, plug in and plug out the card reader and execute the command ( ll /dev/sd* ) to determine the device number.
If the device is mounted by default , manually unmount the device before proceeding.
# umount /dev/sdb
Once we have completed the device detection , we will use below command to setup a kernel 3.10.17 based bootable sdcard.
# sudo dd if=fsl-image-fb-riotboard.sdcard of=/dev/sdX bs=1M
(where sdX is the detected sdcard device)
Once the command completes, power down the card, remove it, plug it into J6 of RIoTboard and power on the board.
Make sure the boot switch are in SDCARD mode before powering on.
Once Powered on it will boot with Kernel 3.10.17.
You will see a boot log as below:
U-Boot 2013.04 (Jul 04 2014 - 09:45:23)
CPU: Freescale i.MX6SOLO rev1.1 at 792 MHz
CPU: Temperature 42 C, calibration data: 0x5a151a5f
Reset cause: POR
Board: MX6SOLO RIoTboard
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 (640x480)
mmc0 is current device
Net: FEC [PRIME]
Warning: failed to set MAC address
Hit any key to stop autoboot: 0
mmc0 is current device
** Unable to read file boot.scr **
5275824 bytes read in 250 ms (20.1 MiB/s)
Booting from mmc ...
43553 bytes read in 21 ms (2 MiB/s)
## Booting kernel from Legacy Image at 12000000 ...
Image Name: Linux-3.10.17_1.0.0_RIoTboard+g1
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 5275760 Bytes = 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 1800da20
Starting kernel ...
It will stop at login promt
Enter root as the username , no password is required.
riotboard login: root
Verifying the kernel version details:
root@riotboard:~# uname -a
Linux riotboard 3.10.17_1.0.0_RIoTboard+g14571fa #1 SMP PREEMPT Fri Jul 4 09:49:22 CST 2014 armv7l GNU/Linux
So we got an updated 3.10 kernel for RIoTboard .
A video guide :