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This is a page about TI's Cortex-A9 based; PandaBoard and PandaBoard ES.

Availability

Boards:
PandaBoard at Digi-Key
PandaBoard ES at Digi-Key

Basic Requirements

ARM Cross Compiler: GCC

This is a pre-built (64bit) version of Linaro GCC that runs on generic linux, sorry (32bit) x86 users, it's time to upgrade...
Download/Extract:

~/
wget -c https://releases.linaro.org/components/toolchain/binaries/6.5-2018.12/arm-linux-gnueabihf/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf.tar.xz
tar xf gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf.tar.xz
export CC=`pwd`/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-

Test Cross Compiler:

~/
${CC}gcc --version
arm-linux-gnueabihf-gcc (Linaro GCC 6.5-2018.12) 6.5.0
Copyright (C) 2017 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

Das U-Boot – the Universal Boot Loader: http://www.denx.de/wiki/U-Boot
eewiki.net patch archive: https://github.com/eewiki/u-boot-patches
Download:

~/
git clone https://github.com/u-boot/u-boot
cd u-boot/
git checkout v2019.04 -b tmp

Patches:

~/u-boot
wget -c https://github.com/eewiki/u-boot-patches/raw/master/v2019.04/0001-omap4_common-uEnv.txt-bootz-n-fixes.patch
 
patch -p1 < 0001-omap4_common-uEnv.txt-bootz-n-fixes.patch

Configure and Build:

~/u-boot
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} omap4_panda_defconfig
make ARCH=arm CROSS_COMPILE=${CC}

Linux Kernel

This script will build the kernel, modules, device tree binaries and copy them to the deploy directory.
Download:

~/
git clone https://github.com/RobertCNelson/armv7-multiplatform
cd armv7-multiplatform/

For v4.19.x (Longterm 4.19.x):

~/armv7-multiplatform/
git checkout origin/v4.19.x -b tmp

For v4.19.x-rt (Longterm 4.19.x + Real-Time Linux):

~/armv7-multiplatform/
git checkout origin/v4.19.x-rt -b tmp

For v5.0.x (Stable):

~/armv7-multiplatform/
git checkout origin/v5.0.x -b tmp

For v5.0.x-rt (Stable + Real-Time Linux):

~/armv7-multiplatform/
git checkout origin/v5.0.x-rt -b tmp

Build:

~/armv7-multiplatform/
./build_kernel.sh

Root File System

Debian 9

User

Password

debian

temppwd

root

root

Download:

~/
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/debian-9.8-minimal-armhf-2019-02-16.tar.xz

Verify:

~/
sha256sum debian-9.8-minimal-armhf-2019-02-16.tar.xz
40643313dbfc4bc9487455cb6e839cc110e226ac2e9046a2f59f05e563802943  debian-9.8-minimal-armhf-2019-02-16.tar.xz

Extract:

~/
tar xf debian-9.8-minimal-armhf-2019-02-16.tar.xz

Ubuntu 18.04 LTS

User

Password

ubuntu

temppwd

Download:

~/
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/ubuntu-18.04.2-minimal-armhf-2019-02-16.tar.xz

Verify:

~/
sha256sum ubuntu-18.04.2-minimal-armhf-2019-02-16.tar.xz
299f278ff446f0e427cb1a6650d1fa5d42d6744fff627c804f0afc918129b6b6  ubuntu-18.04.2-minimal-armhf-2019-02-16.tar.xz

Extract:

~/
tar xf ubuntu-18.04.2-minimal-armhf-2019-02-16.tar.xz

Setup microSD card

We need to access the External Drive to be utilized by the target device. Run lsblk to help figure out what linux device has been reserved for your External Drive.

Example: for DISK=/dev/sdX
lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 465.8G  0 disk
├─sda1   8:1    0   512M  0 part /boot/efi
└─sda2   8:2    0 465.3G  0 part /                <- Development Machine Root Partition
sdb      8:16   1   962M  0 disk                  <- microSD/USB Storage Device
└─sdb1   8:17   1   961M  0 part                  <- microSD/USB Storage Partition
Thus you would use:
export DISK=/dev/sdb
Example: for DISK=/dev/mmcblkX
lsblk
NAME      MAJ:MIN   RM   SIZE RO TYPE MOUNTPOINT
sda         8:0      0 465.8G  0 disk
├─sda1      8:1      0   512M  0 part /boot/efi
└─sda2      8:2      0 465.3G  0 part /                <- Development Machine Root Partition
mmcblk0     179:0    0   962M  0 disk                  <- microSD/USB Storage Device
└─mmcblk0p1 179:1    0   961M  0 part                  <- microSD/USB Storage Partition
Thus you would use:
export DISK=/dev/mmcblk0

Erase partition table/labels on microSD card:

sudo dd if=/dev/zero of=${DISK} bs=1M count=10

Install Bootloader:

~/
sudo dd if=./u-boot/MLO of=${DISK} count=1 seek=1 bs=128k
sudo dd if=./u-boot/u-boot.img of=${DISK} count=2 seek=1 bs=384k

Create Partition Layout:
With util-linux v2.26, sfdisk was rewritten and is now based on libfdisk.

sudo sfdisk --version
sfdisk from util-linux 2.27.1
sfdisk >= 2.26.x
sudo sfdisk ${DISK} <<-__EOF__
4M,,L,*
__EOF__
sfdisk <= 2.25.x
sudo sfdisk --unit M ${DISK} <<-__EOF__
4,,L,*
__EOF__

Format Partition:

for: DISK=/dev/mmcblkX
sudo mkfs.ext4 -L rootfs ${DISK}p1
 
for: DISK=/dev/sdX
sudo mkfs.ext4 -L rootfs ${DISK}1

Mount Partition:
On most systems these partitions may will be auto-mounted...

sudo mkdir -p /media/rootfs/
 
for: DISK=/dev/mmcblkX
sudo mount ${DISK}p1 /media/rootfs/
 
for: DISK=/dev/sdX
sudo mount ${DISK}1 /media/rootfs/

Install Kernel and Root File System

To help new users, since the kernel version can change on a daily basis. The kernel building scripts listed on this page will now give you a hint of what kernel version was built.

-----------------------------
Script Complete
eewiki.net: [user@localhost:~$ export kernel_version=4.X.Y-Z]
-----------------------------

Copy and paste that "export kernel_version=4.X.Y-Z" exactly as shown in your own build/desktop environment and hit enter to create an environment variable to be used later.

export kernel_version=4.X.Y-Z

Copy Root File System

~/
sudo tar xfvp ./*-*-*-armhf-*/armhf-rootfs-*.tar -C /media/rootfs/
sync
sudo chown root:root /media/rootfs/
sudo chmod 755 /media/rootfs/

Set uname_r in /boot/uEnv.txt

~/
sudo sh -c "echo 'uname_r=${kernel_version}' >> /media/rootfs/boot/uEnv.txt"

Device Tree Binary

PandaBoard EA1->A3
sudo sh -c "echo 'dtb=omap4-panda.dtb' >> /media/rootfs/boot/uEnv.txt"
 
PandaBoard A4->+ (non ES)
sudo sh -c "echo 'dtb=omap4-panda-a4.dtb' >> /media/rootfs/boot/uEnv.txt"
 
PandaBoard ES
sudo sh -c "echo 'dtb=omap4-panda-es.dtb' >> /media/rootfs/boot/uEnv.txt"
 
PandaBoard ES Rev B3
sudo sh -c "echo 'dtb=omap4-panda-es-b3.dtb' >> /media/rootfs/boot/uEnv.txt"

Copy Kernel Image

Kernel Image:

~/
sudo cp -v ./armv7-multiplatform/deploy/${kernel_version}.zImage /media/rootfs/boot/vmlinuz-${kernel_version}

Copy Kernel Device Tree Binaries

~/
sudo mkdir -p /media/rootfs/boot/dtbs/${kernel_version}/
sudo tar xfv ./armv7-multiplatform/deploy/${kernel_version}-dtbs.tar.gz -C /media/rootfs/boot/dtbs/${kernel_version}/

Copy Kernel Modules

~/
sudo tar xfv ./armv7-multiplatform/deploy/${kernel_version}-modules.tar.gz -C /media/rootfs/

File Systems Table (/etc/fstab)

sudo sh -c "echo '/dev/mmcblk0p1  /  auto  errors=remount-ro  0  1' >> /media/rootfs/etc/fstab"

WiFI

Install Firmware:

~/
git clone git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git --depth=1
 
sudo mkdir -p /media/rootfs/lib/firmware/ti-connectivity
sudo cp -v ./linux-firmware/ti-connectivity/* /media/rootfs/lib/firmware/ti-connectivity

Remove microSD/SD card

sync
sudo umount /media/rootfs

FAQ

PandaBoard ES Rev B3: New Memory Timings

Note: the U-Boot patch on this wiki has this fix already applied...
Error:

U-Boot SPL 2013.04-00015-gfe81c6a (Apr 24 2013 - 14:35:14)
OMAP4460 ES1.1
SDRAM: identified size not same as expected size identified: 0
expected: 40000000

Fix:
Comment out: http://git.denx.de/?p=u-boot.git;a=blob;f=include/configs/omap4_common.h;h=2fa4382c3ef54a3f39102a26eb717afcabd1bfe3;hb=refs/tags/v2013.07-rc3#l258

/* Disable for PandaBoard ES Rev B3 #define CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */

PandaBoard A4 (with "M" Micron memory)

Note: the U-Boot patch on this wiki has this fix already applied...

U-Boot SPL 2014.04-dirty (Apr 18 2014 - 13:51:58)
OMAP4430 ES2.3
SDRAM: identified size not same as expected size identified: 1000 expected: 40000000
SPL: Please implement spl_start_uboot() for your board
SPL: Direct Linux boot not active!
reading u-boot.img
reading u-boot.img

Fix: v2014.04: http://git.denx.de/?p=u-boot.git;a=blob;f=include/configs/ti_omap4_common.h;h=bcb5eabd75660c4388b094258fbe2d6964b93db3;hb=refs/tags/v2014.04#l50

/* #define CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */
#define CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS

Comments

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