New Release PicoCoreMX6UL B2019.03

  • F&S i.MX6UL Buildroot Release for PicoCoreMX6UL (15.03.2019)

    Please see the file


    for a description of how everything is installed and used.

    This is a major release for fsimx6ul. fsimx6ul is the software for all boards from F&S that are based on the i.MX6-UltraLite and i.MX6ULL CPUs from NXP (or i.MX6UL and i.MX6ULL for short). Currently these are the modules efusA7UL, PicoCOM1.2 and PicoCoreMX6UL. Further boards may be added to this family in the future. All these boards can work with software that is created from this release package.

    Please note that this release is mainly targeted to the new System-on-Module PicoCoreMX6UL. Other boards of the fsimx6ul family may generally work with this release, but are not fully supported. For example boards with WLAN will not work because the WLAN driver is not ported to the new kernel yet. There will be a separate release later that will have support for all fsimx6ul boards again.

    This release brings new versions to all parts of the software stack. Here are some highlights of this release.

    1. New version numbering

    We have changed the way how we name versions. In the past we had a version number made up of a major part m and a minor part n. Then we used Vm.n for Buildroot releases and Ym.n for Yocto releases. Release versions were counted individually for each CPU architecture. But then a "new" CPU type unfortunately had a smaller version number than an "old" CPU, even if the code was coming from the same sources. This caused some irritations and misunderstandings of what release is actually the newest.

    So from now on we will use the year and month of the release instead, preceeded by a 'B' for Buildroot releases and a 'Y' for Yocto releases. For example the "B2019.03" of this release indicates a Buildroot based release from March 2019.

    2. Support for new board PicoCoreMX6UL

    This is the first regular release that supports PicoCoreMX6UL. The PicoCore is only 40mm x 35mm but is a very powerful System-on-Module with many I/Os.

    3. New U-Boot 2018.03

    We have a considerably newer U-Boot now. One of the main new features is display support, so basically U-Boot can now be used to show a splash screen. However on fsimx6ul, this will not work with our RGB display adapters yet, because these adapters require additional I2C access that is still missing.

    U-Boot will also show more information about the CPU type now, for example temperature range, possible speed, etc. The command "clocks" will show much more information about internal clock rates. And USB storage devices are detected faster than before.

    U-Boot has experienced quite a lot of internal restructuring. For example it now also supports configuration via a Kconfig menu, similar to Linux kernel and Buildroot. After configuration with

    1. make fsimx6ul_defconfig

    simply call

    1. make menuconfig

    to show the menu. There you can select and de-select entries or move to sub-menus.

    Moving all configuration options from the previous header file to this menu is a long-term and still ongoing process. So not all features are available in the menu, yet.

    U-Boot is now compiled and running in THUMB mode. This saves space that is needed for all the display code.

    4. New Linux kernel 4.9.88

    The Linux kernel is now based on 4.9.88. By default, we are using the zImage format of the kernel now, not the uImage format as before. Here are some of the new features since the previous kernel 4.1.15.

    • Improvements and optimizations in memory management, for example better heap and page management (tmpfs, shmem), better protection against attacks by implementing stack, heap and memory randomization.
    • Performance optimizations for the network stack, like faster TCP connections, quick killing of hanging network links, more features for the packet filter (firewall), smaller latencies on WLAN.
    • Optimizations in block layer, for example better Device Mapper for LVM, improved parallel access to directories, more efficient access to SSDs, parallel access for NFS, kernel support for file copy, server-side copy for CIFS, NFS, XFS, support for hard discs with host-managed SMR (Shingled Magnetic Recording).
    • Optimizations on file systems (NTRFS, EXT4, F2FS, NFS, XFS, Overlayfs, Ceph), new cluster filesystem Orangefs
    • Many improvements in graphics stack, like DRM (Direct Rendering Manager), new open source graphics driver etnaviv for Vivante graphics on i.MX CPUs (etnaviv = vivante backwards)
    • Better load balancing of processes to CPU cores, new cgroups v2, improved power and frequency handling, new cpufreq governor schedutil.
    • New GPIO infrastructure not using sysfs, supposed to be faster.
    • Support for USB SuperSpeedPlus (USB 3.1).
    • Many many new and improved drivers for WLAN chips, touch controllers, audio codecs, cameras, MMC/SD cards, etc.

    Of course there are also many changes for other CPU types (like x86) and other graphics cores (like AMD, Nvidia, Intel) but these are not of interest here.

    5. Buildroot 2018.11

    Buildroot 2018.11 has many many updated packages, for example Qt-5.11, busybox-1.29.3, xserver-1.20.3 and gstreamer-1.14.4.

    6. New toolchain fs-toolchain-7.4-armv7ahf

    Our new toolchain is now based on gcc-7.4 that fully supports C++14 and has basic support for C++17.

    This toolchain is now a 64-bit toolchain, i.e. it will not run on PCs (or VMs) with a 32-bit Linux anymore. The default output of the toolchain is of course still ARMv7 code for 32 bit ARM CPUs like Cortex-A7 or Cortex-A9, as in i.MX6UL or i.MX6.

    This toolchain also fixes a bug in the calling convention for ARM CPUs that was introduced in gcc-5.x and prevented some code optimizations. Many software packages now depend on a compiler that has this bug fixed. For example our new u-boot-2018.03 will produce bad code if compiled with an older toolchain. So please use this new toolchain together with the code of this release.

    7. Documentation

    In the past, the documentation that was included in the release package itself was often superseded by newer versions on our website. But people continued to use the outdated version of the release, causing unnecessary complications.

    To avoid this, from now on only the software related documentation is directly included in the release. We have added chapter 1.3 to FSiMX6UL_FirstSteps_eng.pdf that contains direct links to the appropriate resources on our website. There you can download the newest versions of hardware documentations, schematics, layout files, certificates, accessories, add-ons, adapters and similar things.


    The following list shows the most noticable changes in this release in more detail since our last regular i.MX6UL release. Please note that the source code is also used for other platforms. This is why you will also find references to other CPU types and F&S boards here in the changelog.

    nbootimx6ul_37.bin (VN37) (31.01.2019)

    Supported Boards: efusA9UL, PicoCOM1.2, PicoCoreMX6UL, CubeA7UL, Cube2.0, GAR1

    NBoot for i.MX6UL shares the source code with other i.MX6 CPU variants like SoloX and the regular i.MX6, therefore versions are counted consecutively.


    • 0003367: efus VLCD_ON and VCFL_ON could be high after power on
    • 0003369: On i.MX6UL/ULL, add support for speed limitation to 528 MHz
    • 0003370: On i.MX6UL/ULL, DVS is on NAND_DQS which is configured as output high by Boot ROM
    • 0003376: Mask HAB HDR to support different ROM code versions
    • 0003377: Use different DDR settings for new efusA7UL board rev. and UL/ULL
    • 0003380: Correct speed table for ULL
    • 0003381: Add processor specific fuse settings for HAB
    • 0003384: Use different IOMUX for ULL tamper pins
    • 0003385: Version should be VSxx for secure loader
    • 0003333: Wrong pins for config jumpers used


    • 0003549: Secure Boot support new CPU revisions
    • 0003807: Add new boards
    • 0003808: add customer specific variant
    • 0003809: add bootoption for SD card for armStoneA9
    • 0003810: add WLAN2 option in boardfeatures
    • 0003811: skip M4 when using serial download
    • 0003812: fix clock settings in Init_Clocks
    • 0003813: add missings init code for PicoCOMA7
    • 0003814: debug uart does not work for Solo/DualLight CPU on QBlissA9r2
    • 0003815: USB connection makes nboot unresponsive
    • 0003398: efusA7UL: board revision > 1.20 outputs string ">=1.20 detected"

    u-boot-2018.03-picocoremx6ul-B2019.03 (13.03.2019)

    Supported boards: PicoCoreMX6UL

    Not tested: armStoneA9, armStoneA9r2, efusA9, PicoMODA9, NetDCUA9, QBlissA9, QBlissA9r2, efusA7UL, CubeA7UL, Cube2.0, PicoCOM1.2, GAR1, efusA9X, PicoCOMA9X, PicoCoreMX6SX, CONT1, armStoneA5, NetDCUA5, PicoCOMA5, CUBEA5, AGATEWAY, HGATEWAY

    • Improve PLL decoding and clocks command output on i.MX6
    • Add BGR666 pixel format to ipu_disp.c, required for display on efusA9
    • Add IPU clocks for i.MX6
    • Enhance IPU graphics support for i.MX6
    • Fix video and nulldev stdio devices
    • Add I2C_PADS and I2C_PADS_INFO to mxc_i2c.h
    • Add F&S company boot logo
    • Add LCD and LVDS display support for fsimx6
    • Use THUMB code on fsimx6/sx/ul
    • In ipuv3_fb_shutdown, check if at least one display was active
    • Add support for PicoCOMA7
    • Remove unnecessary debug message in fsimx6.c
    • Add I2C_PADS and I2C_PADS_INFO also for other i.MX6 variants
    • Add support for i.MX6UL and i.MX6SX to mxsfb display driver
    • Add display support to fsimx6sx/ul
    • Add PicoCoreMX6UL
    • Add PicoCoreMX6SX
    • Add SD card support to PicoCOREMX6UL
    • Replace GPL comments in F&S files with SPDX-License-Identifier
    • Fix TAGS file creation
    • Add missing checks for MXC_CPU_MX6SOLO in clock.c
    • Switch off backlight and display voltages when booting Linux
    • Add fix for eMMC with activated Enhanced Mode
    • Drop support for fss5pv210 (armStoneA8, NetDCU14, PicoMOD7A)
    • Drop support for fsam335x (never released)
    • Reduce differences to mainline U-Boot
    • F&S boards: Update loadaddr, add fdtaddr, use zImage by default
    • Switch F&S boards to CONFIG_SYS_GENERIC_BOARD
    • Add get_reset_cause() for Vybrid
    • Move F&S specific FDT code to board/F+S/common/fs_fdt_common.[ch]
    • Move F&S common board code to board/F+S/common/fs_board_common.[ch]
    • Move NBoot args from bootm to F&S specific code
    • Move F&S specific mmc code to board/F+S/common/fs_mmc_common.[ch]
    • Move F&S specific ETH code to board/F+S/common/fs_eth_common.[ch]
    • Show new device if usb dev <n> switches storage devices
    • Update F&S specific USB code and move to board/F+S/common/
    • Remove earlyusbinit feature
    • Improve F&S display code and move to board/F+S/common/fs_disp_common
    • Combine and improve display clock code for i.MX6QDL/SX/UL/ULL
    • Move display specific i.MX6 clock code to clock-ipuv3.c/clock-mxsfb.c
    • Rebase to u-boot-2014.10
    • Add defconfigs for fsimx6/sx/ul/fsvybrid
    • Rebase to u-boot-2015.01
    • Change fat.c and wildcard.c to reflect interface changes
    • Allow swapping color channels on mxsfb
    • Rebase to u-boot-2015.04
    • Rebase to u-boot-2015.07
    • On F&S boards, move some command definitions from .h to defconfig
    • Change meaning of loadaddr, always set fileaddr
    • Change RPMsg ring buffer initialization on fsimx6sx
    • Rebase to u-boot-2015.10
    • Move F&S boards from arch/arm/Kconfig to arch/arm/cpu/armv7/mx6/Kconfig
    • Rebase to u-boot-2016.01
    • Fix reset issues for ETH PHYs on F&S boards
    • Rebase to u-boot-2016.03
    • Rebase to u-boot-2016.05
    • On F&S boards, move more CMD settings from .h to defconfig
    • Move set_working_fdt_addr() from cmd/fdt.c to common/image-fdt.c
    • USB hub handling needs some delay before resetting ports
    • Fix fsl_esdhc_cfg handling when using GPIOs for Card Detect (CD)
    • Rebase to u-boot-2016.07
    • Have option to keep CONFIG_BOOTDELAY unset
    • Change nand chip allocation in fsl_nfc_fus.c and mxs_nand_fus.c
    • Rebase to u-boot-2016.09
    • Remove unnecessary flush_cache() from cmd/net.c
    • Move CONFIG_USB_STORAGE from .h to defconfig on F&S boards
    • Remove ram_base from global data
    • Enable mtest command (CONFIG_CMD_MEMTEST) on F&S boards
    • Rebase to u-boot-2016.11
    • Remove patch_sercon() from boot code
    • Move console, UBI and NAND settings from .h to defconfig on F&S boards
    • Handle non-standard CONFIG settings on F&S boards
    • Rebase to u-boot-2017.01
    • Remove CONFIG_USE_ARCH_MEM* from fsvybrid/fsimx6/sx/ul.h
    • Add F&S specific versions of memmove() and memset32() to Kconfig
    • Rebase to u-boot-2017.03
    • Fix status LED infrastructure
    • On F&S boards, move LED, BOARD and some CMD settings to defconfig
    • Rebase to u-boot-2017.05
    • Bring back rudimentary IRQ support for F&S boards
    • Rebase to u-boot-2017.07
    • Reduce diff to mainline u-boot-2017.07
    • Fix const const problems revealed by gcc-7
    • Rebase to u-boot-2017.09
    • Move more F&S configs from *.h to *_defconfig (environment, cmds)
    • Move loadaddr stuff from cmd/nvedit.c to common/image.c
    • Add F&S specific configs to Kconfig
    • Rebase to u-boot-2017.11
    • Add F&S FAT driver again, available as option
    • memcpy.S for ARM must not modify r9
    • Rebase to u-boot-2018.01
    • Rebase to u-boot-2018.03
    • Enable commands env callbacks and env flags on F&S boards
    • Add F&S NAND refresh feature to drivers/mtd/nand/Kconfig
    • Add a missing conversion from r9 to r10 in memcpy()
    • Clean up error message if env can not be loaded
    • Skip extra check for ethaddr if set with setenv

    linux-4.9.88-picocoremx6ul-B2019.03 (13.03.2019)

    Supported Boards: PicoCoreMX6UL

    Not tested: armStoneA9, armStoneA9r2, efusA9, PicoMODA9, NetDCUA9, QBlissA9, QBlissA9r2, efusA7UL, CubeA7UL, Cube2.0, PicoCOM1.2, GAR1, efusA9X, PicoCOMA9X, PicoCoreMX6SX, CONT1, PicoCoreMX7ULP, armStoneA5, NetDCUA5, PicoCOMA5, CUBEA5, AGATEWAY, HGATEWAY

    • Add property fsl,rx_fifo_trig to i.MX6 UART driver
    • On i.MX6, add support for BT656 and BT1120 output on IPU
    • Add support for ADV7391 video encoder
    • Add analog video output to fsimx6, using BT656+ADV7391
    • Improve adv739x driver to allow setting chip type
    • On i.MX6, add support for 4-channel camera input ISL79985/79987
    • Add support for ISL7998X 4x camera MIPI decoder on fsimx6
    • Add PAL/NTSC support for isl7998x_mipi.c, improve driver
    • Add more network features to fsimx6/ul/sx defconfigs
    • Add bluetooth support to fsimx6sx/ul
    • Update to rel_imx_4.9.11_1.0.0_ga
    • Improve semtech sx8654 driver support reverse coordinates
    • Fix compiler errors after merge of several files
    • Add Support for PicoCOMA7
    • Use new F&S Tux logo when booting
    • Use spinlock in isl7998x_mipi driver
    • Update to rel_imx_4.9.88_2.0.0_ga
    • Add picocoremx6ull.dts
    • Improve armstonea5 device tree
    • PicoCOMA9X: correct reference to EMMC card detect
    • Improve CPU specific function calls in busfreq-imx.c
    • Add support for PicoCoreMX7ULP
    • Fix auxiliary_core driver memory leak
    • Add DMA mode to IMX6SX_CLK_ECSPI5
    • imx6sx: deactivate usbphy_nop1 per default
    • Add device tree: picocorea9x
    • Improve picocoremx6ull.dts - audio and UL/ULL variant
    • Fix nand flash error - enable edo mode
    • Correct distinction between UL and ULL
    • Adapt fs_rpmsg example to new rpmsg API
    • Fix efusa9x/picocoma9x rpmsg-vring entries
    • Improve RTC support on qblissa9r2
    • Renamed picocorea9x.dts to picocoremx6sx.dts
    • Add picocoremx6sx M4-support
    • Fix two bugs in M4 support regarding the kernel update to 4.9.88
    • Add support for Toshiba TC358762 DSI to RGB converter
    • Improve mxsfb driver support i.MX6 & i.MX7
    • Support new F&S Tux logo on fsimx7ulp_defconfig
    • Improve mipi_dsi_northwest driver - get DT disp params
    • Improve TC358762 driver - support reset gpio pin
    • Support LCD display on picocoremx7ulp
    • Improve fsimx7ulp_defconfig
    • Improve picocoremx7ulp.dts
    • Add Power_Reset to fsimx7ulp_defconfig
    • Improve fsimx7ulp_defconfig WLAN module
    • Support for USB-Device in PicoCoreMX7ULP
    • Improve picocoremx7ulp
    • Add support for RTC PCF85063 to fsimx6ul_defconfig
    • Improve PicoCoreMX7ULP device tree
    • Add SD1_VSEL to picocoremx6ull.dts to support UHS SD cards

    buildroot-2018.11-picocoremx6ul-B2019.03 (13.03.2019)

    Supported Boards: PicoCoreMX6UL

    Not tested: armStoneA9, armStoneA9r2, efusA9, PicoMODA9, NetDCUA9, QBlissA9, QBlissA9r2, efusA7UL, CubeA7UL, Cube2.0, PicoCOM1.2, GAR1, efusA9X, PicoCOMA9X, PicoCoreMX6SX, CONT1, armStoneA5, NetDCUA5, PicoCOMA5, CUBEA5, AGATEWAY, HGATEWAY

    • Rebase to buildroot-2016.08.1
    • Rebase to buildroot-2016.11.3
    • Rebase to buildroot-2017.02.5
    • Rebase to buildroot-2017.05.2
    • Remove unnecessary InputSetScreen.patch from xserver
    • Set rootfs.ext2 size manually to every config
    • Rebase to buildroot-2017.08
    • Remove recursive dependency at imx-gst1-plugin
    • Remove legacy packages in fsimx6_qt5_defconfig
    • Add linux-custom strategy to fsimx6_qt5_defconfig
    • Activate freescale and EGL packages in qt5_defconfig
    • Add patches for Silex QCA9377 to bluez5_utils
    • Use bluez5_utils instead of bluez4_utils on F&S boards
    • Update silex-wlan-fs package to v4.1_01272017-1
    • Use bluez5_utils v5.39
    • Add missing dependency in xdriver_xf86-video-imx-viv
    • Remove legacy configuration in defconfigs
    • Switch to new local_kernel_custom strategy
    • Rebase to buildroot-2017.11.2
    • Remove qt5 patch 0010-EGL-fb-lib-inclusion.patch
    • Rebase to buildroot-2018.02.2
    • Remove bluez5_utils patch 0002
    • Update imx-gpu-viv to 6.2.2.p0-aarch32
    • Fix qt5base build issue without x11/xcb
    • Rebase to buildroot-2018.05
    • imx-gpu-viv: fix install step and be compatible
    • Rebase to buildroot-2018.08-rc2
    • Remove legacy options
    • Increase size for ext2 and ubifs filesystem
    • Update defconfigs to use linux 4.9.11
    • Add imx firmware to fsimx6_std_defconfig
    • Rebase to buildroot-2018.08
    • Correct version of imx packages (firmware, g2d, gpu)
    • Add XDRIVER_XF86_VIDEO_IMX_VIV to fsimx6_std_defconfig
    • Shrink qt5 rootfs to a usable size (soloX)
    • fsimx6ul: Remove xf86-input-tslib, set xserver to 1.17.4
    • Remove tslib from all imx6, imx6sx, imx6ul defconfigs
    • Update version of imx packages for kernel 4.9.88
    • Add package sterling-wlan-fs for F&S boards
    • Add fsimx7ulp_std_defconfig
    • Fix xserver startup issue in /etc/init.d/
    • Set kernel version to 4.9.88 in fsimx6* defconfigs
    • Build device tree: added picocorea9x
    • Add erpc python package for AMP-example
    • fsimx6ul_std_defconfig: correct imx-platform
    • Rebase to buildroot-2018.11
    • fsimx6ul_qt5_defconfig: set linuxfb as default platform
    • fsimx6ul_qt5_defconfig: correct imx-platform
    • Add fsimx7ulp_qt5_defconfig
    • Rename device tree from picocorea9x to picocoremx6sx
    • Change kernel load address for i.MX6 CPUs
    • Fix python-erpc package
    • Update silex-wlan-fs package to v4.1_01272017-2
    • fsimx7ulp: Remove xf86-input-tslib, set xserver to 1.17.4
    • Add fsimx7ulp_min_defconfig
    • Fix invalid pointer in passwd
    • Drop support for PicoCOM4
    • Drop support for fss5pv210 (armStoneA8, NetDCU14, PicoMOD7A)
    • Switch to fs-toolchain-7.4-armv7ahf for F&S boards
    • Switch F&S boards to zImage
    • Update xdriver_xf86-video-fbdev to version 0.5.0


    (no changes)


    fs-toolchain-7.4-armv7ahf.tar.bz2 for Linux

    • Based on gcc-7.4
    • Support for C and C++
    • Includes glibc-2.28 (compiled for ARM code)
    • With binutils-2.31.1
    • Hardware floating point
    • Native Posix Thread Library (NPTL)
    • Full support for C++14 and OpenMP 4.5
    • Basic support for C++17


    • Update to version 1.5 of FSiMX6UL_FirstSteps_eng.pdf

    Please download the hardware documentation directly from our website.

    Then you always have the newest version.

    Your F&S Support Team

    F&S Elektronik Systeme GmbH
    As this is an international forum, please try to post in English.
    Da dies ein internationales Forum ist, bitten wir darum, Beiträge möglichst in Englisch zu verfassen.

  • fs-support_HK

    Changed the title of the thread from “New Release PicoCoreMX6ULL B2019.03” to “New Release PicoCoreMX6UL B2019.03”.