Voipac: Created page with "Category:iMX6 OpenRex SBC Category:iMX6 OpenRex Basic Category:U-Boot
TOC
U-Boot is a bootloader responsible for hardwa..."

2021-04-02T06:22:36Z

Created page with "Category:iMX6 OpenRex SBC Category:iMX6 OpenRex Basic Category:U-Boot  <div style="float:right">__TOC__</div> U-Boot is a bootloader responsible for hardwa..."

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[[Category:iMX6 OpenRex SBC]]
[[Category:iMX6 OpenRex Basic]]
[[Category:U-Boot]]

<div style="float:right">__TOC__</div>
U-Boot is a bootloader responsible for hardware initialization, loading and booting Linux kernel. It is also used for SBC flashing.

== Build ==

==== Set toolchain ====
Export [[iMX6 OpenRex Toolchain|toolchain variables]] for every related terminal session.

==== Initial steps ====
Create working directory
<syntaxhighlight lang="bash">
mkdir -pv ~/workdir/imx6/bootloader/
</syntaxhighlight>

== U-Boot v2015.04 ==

=== Download and extract source code ===
<syntaxhighlight lang="bash">
cd ~/workdir/imx6/bootloader/
git clone -b uboot-imx-v2015.04 --single-branch https://github.com/voipac/uboot-imx uboot-imx-v2015.04-rex
cd uboot-imx-v2015.04-rex
</syntaxhighlight>

=== Compile ===
Output file is called u-boot.imx. All the compiled images are intended for production usage.

==== Compile for SD3 and Linux/Yocto ====
<syntaxhighlight lang="bash">
cd ~/workdir/imx6/bootloader/uboot-imx-v2015.04-rex
make distclean
make mx6openrexbasic_config
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-
cp -av u-boot.imx /srv/tftp/imx6/u-boot-imx6-openrexbasic.imx
</syntaxhighlight>

=== How to Flash a new version ===
==== Flash into SPI Flash using U-Boot ====
<syntaxhighlight lang="bash">
setenv ipaddr 192.168.0.150
setenv serverip 192.168.0.1
mw.b 0x10800000 0xFF 0x80000
tftp 0x10800000 imx6/u-boot-imx6-openrex*.imx
if sf probe 2:2; then sf erase 0x0 0x80000;sf write 0x10800000 0x400 0x7fc00; fi
</syntaxhighlight>

Flashing log:
<syntaxhighlight lang="bash">
U-Boot 2015.04-gfd6325c-dirty (Mar 11 2017 - 23:09:03)

CPU: Freescale i.MX6SOLO rev1.1 at 792 MHz
CPU: Temperature 34 C
Reset cause: POR
Board: MX6 OpenRex - basic
I2C: ready
DRAM: 512 MiB
PMIC: PFUZE100 ID=0x10
MMC: FSL_SDHC: 0
SF: Detected SST26VF032B with page size 256 Bytes, erase size 4 KiB, total 4 MiB
In: serial
Out: serial
Err: serial
Net: FEC [PRIME]
Normal Boot
Hit any key to stop autoboot: 0
OpenRex U-Boot > setenv ipaddr 192.168.1.150
OpenRex U-Boot > setenv serverip 192.168.1.1
OpenRex U-Boot > mw.b 0x10800000 0xFF 0x80000
OpenRex U-Boot > tftp 0x10800000 imx6/u-boot-imx6-openrexbasic.imx
Using FEC device
TFTP from server 192.168.1.1; our IP address is 192.168.1.150
Filename 'imx6/u-boot-imx6-openrexbasic.imx'.
Load address: 0x10800000
Loading: #######################
2.8 MiB/s
done
Bytes transferred = 334848 (51c00 hex)
OpenRex U-Boot > sf probe 2:2;sf erase 0x0 0x80000;sf write 0x10800000 0x400 0x7fc00
SF: Detected SST26VF032B with page size 256 Bytes, erase size 4 KiB, total 4 MiB
SF: 524288 bytes @ 0x0 Erased: OK
SF: 523264 bytes @ 0x400 Written: OK
OpenRex U-Boot >
</syntaxhighlight>

== Configure ==

==== Manually erase configuration ====
<syntaxhighlight lang="bash">
OpenRex U-Boot > sf probe 2:2
SF: Detected SST26VF032B with page size 256 Bytes, erase size 4 KiB, total 4 MiB
OpenRex U-Boot > sf erase 0x80000 0x2000
SF: 8192 bytes @ 0x80000 Erased: OK
OpenRex U-Boot > reset
</syntaxhighlight>

=== Manual boot options ===

==== Manually boot from SPI3 ====
<syntaxhighlight lang="bash">
mw.l 0x020d8040 0x2A000030; mw.l 0x020d8044 0x10000000; reset
</syntaxhighlight>

==== Manually boot from SD2 ====
<syntaxhighlight lang="bash">
mw.l 0x020d8040 0x00002840; mw.l 0x020d8044 0x10000000; reset
</syntaxhighlight>

iMX6 OpenRex Basic U-Boot - Revision history

Voipac: Created page with "Category:iMX6 OpenRex SBC Category:iMX6 OpenRex Basic Category:U-Boot __TOC__ U-Boot is a bootloader responsible for hardwa..."

Voipac: Created page with "Category:iMX6 OpenRex SBC Category:iMX6 OpenRex Basic Category:U-Boot
TOC
U-Boot is a bootloader responsible for hardwa..."