Difference between revisions of "Building VIBE2 Boot Image"

Revision as of 07:43, 10 May 2017

Note : All steps are executed on the Ubuntu 16.04.2 LTS and as a root user. Most of the steps are similar Robert C Nelson BBB Wiki.

Basic Requirements

• Running a recent release of Debian, Fedora or Ubuntu; without OS Virtualization Software.
• ARM Cross Compiler – Linaro: http://www.linaro.org
  • Linaro Toolchain Binaries: http://www.linaro.org/downloads/
• Bootloader
  • Das U-Boot – the Universal Boot Loader: http://www.denx.de/wiki/U-Boot
  • Source: http://git.denx.de/?p=u-boot.git;a=summary
• Linux Kernel
  • Linus's Mainline tree: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git
• ARM based rootfs
  • Debian : http://www.debian.org/
  • Ubuntu: http://www.ubuntu.com

ARM Cross Compiler: GCC

Download and extract the ARM Cross compiler linaro gcc.

~/

wget -c https://releases.linaro.org/components/toolchain/binaries/5.4-2017.01/arm-linux-gnueabihf/gcc-linaro-5.4.1-2017.01-x86_64_arm-linux-gnueabihf.tar.xz
tar xf gcc-linaro-5.4.1-2017.01-x86_64_arm-linux-gnueabihf.tar.xz
export CC=`pwd`/gcc-linaro-5.4.1-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-

Test:

~/

${CC}gcc --version
arm-linux-gnueabihf-gcc (Linaro GCC 5.4-2017.01) 5.4.1 20161213
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Bootloader: U-Boot

Download :

~/

git clone https://github.com/u-boot/u-boot
cd u-boot/
git checkout v2017.03 -b tmp

Patches :

wget -c https://rcn-ee.com/repos/git/u-boot-patches/v2017.03/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch
wget -c https://rcn-ee.com/repos/git/u-boot-patches/v2017.03/0002-U-Boot-BeagleBone-Cape-Manager.patch
 
patch -p1 < 0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch
patch -p1 < 0002-U-Boot-BeagleBone-Cape-Manager.patch

Configure and Build :

~/u-boot

make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} am335x_evm_defconfig
make ARCH=arm CROSS_COMPILE=${CC}

Linux Kernel

TI BSP

Download:

~/

git clone https://github.com/RobertCNelson/ti-linux-kernel-dev.git
cd ti-linux-kernel-dev/

For TI v4.4.x:

~/ti-linux-kernel-dev

git checkout origin/ti-linux-4.4.y -b ti-linux-4.4.y

Update GCC cross compiler path in system.sh

cp system.sh.sample system.sh

Update CC variable with path with GCC compiler path set above

nano system.sh
CC=/home/yantrr/gcc-linaro-5.4.1-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-

Build:

~/ti-linux-kernel-dev/

./build_kernel.sh

Update LINUX_GIT variable in system.sh

nano system.sh
LINUX_GIT=/home/yantrr/ti-linux-kernel-dev/ignore/linux-src/

Change USB0 Mode :

For VIBE/VIBE2, very first you need to change the USB0 dr_mode from peripheral to host in Beaglebone Black kernel source file KERNEL/arch/arm/boot/dts/am335x-bone-common.dtsi while rebuilding the kernel

&usb0 {
       status = "okay";
       dr_mode = "host";
};

ZTE and Telit modems driver are already in Beaglebone Black kernel source version 4.4, so no need of any patch for it.

USB Driver configuration for SEW modems:

nano KERNEL/drivers/usb/serial/option.c
/* Yantrr Strongrising products */
#define YANTRR_VENDOR_ID        0x21f5
#define YANTRR_PRODUCT_VAYU3GH    0x2012
#define YANTRR_PRODUCT_VAYU3GC    0x2009
#define YANTRR_DONGLE_ID        0x20a6
#define YANTRR_DONGLE_PRODUCT    0x1105

/*Also, add entries in struct usb_device_id option_ids[]*/
{ USB_DEVICE(YANTRR_VENDOR_ID, YANTRR_PRODUCT_VAYU3GH) },
{ USB_DEVICE(YANTRR_VENDOR_ID, YANTRR_PRODUCT_VAYU3GC) },
{ USB_DEVICE(YANTRR_DONGLE_ID, YANTRR_DONGLE_PRODUCT) },

Rebuild Kernel :

~/ti-linux-kernel-dev

./tools/rebuild.sh

Check for PPS support under Device Drivers ---> PPS Support

Final output on terminal :

-----------------------------
'arch/arm/boot/zImage' -> '/home/yantrr/ti-linux-kernel-dev/deploy/4.4.62-ti-r99.zImage'
'.config' -> '/home/yantrr/ti-linux-kernel-dev/deploy/config-4.4.62-ti-r99'
-rwxr-xr-x 1 root root 8.3M May  2 14:58 /home/yantrr/ti-linux-kernel-dev/deploy/4.4.62-ti-r99.zImage
-----------------------------
Building modules archive...
Compressing 4.4.62-ti-r99-modules.tar.gz...
-rw-r--r-- 1 root root 22M May  2 14:58 /home/yantrr/ti-linux-kernel-dev/deploy/4.4.62-ti-r99-modules.tar.gz
-----------------------------
Building firmware archive...
Compressing 4.4.62-ti-r99-firmware.tar.gz...
-rw-r--r-- 1 root root 1.2M May  2 14:58 /home/yantrr/ti-linux-kernel-dev/deploy/4.4.62-ti-r99-firmware.tar.gz
-----------------------------
Building dtbs archive...
Compressing 4.4.62-ti-r99-dtbs.tar.gz...
-rw-r--r-- 1 root root 1.4M May  2 14:58 /home/yantrr/ti-linux-kernel-dev/deploy/4.4.62-ti-r99-dtbs.tar.gz
-----------------------------
Script Complete
eewiki.net: [user@localhost:~$ export kernel_version=4.4.62-ti-r99]
-----------------------------

Final step : Copy compiled kernel files to already bootable SD-card

~/ti-linux-kernel-dev

export kernel_version=4.4.62-ti-r99
cp -v deploy/${kernel_version}.zImage /media/yantrr/rootfs/boot/vmlinuz-${kernel_version}
mkdir -p /media/yantrr/rootfs/boot/dtbs/${kernel_version}/
tar xfv deploy/${kernel_version}-dtbs.tar.gz -C /media/yantrr/rootfs/boot/dtbs/${kernel_version}/
tar xfv deploy/${kernel_version}-firmware.tar.gz -C /media/yantrr/rootfs/lib/firmware/
tar xfv deploy/${kernel_version}-modules.tar.gz -C /media/yantrr/rootfs/
nano /media/yantrr/rootfs/boot/uEnv.txt
sync
lsblk
umount /dev/sdb1
eject /dev/sdb