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version 1.23, 2016/04/15 23:40:58

version 1.24, 2016/04/16 02:47:46

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Building from source:

At this moment, the kernel has to be in the FAT boot partition, not the

At this moment, the kernel has to be in the FAT or ext2 boot partition, not

root of the file system like other OpenBSD platforms, and this kernel

the root of the file system like other OpenBSD platforms, and this kernel

must be in a format required by the U-Boot boot loader.

So, after building your kernel, you must go through some special steps:

# config GENERIC

# cd ../compile/GENERIC

# make clean; make

# make clean

# make bsd.OMAP.umg

# mount /dev/sd0i /mnt # assuming your FAT partition is 'i'

# cp bsd.OMAP.umg /mnt/bsd.umg

</pre></blockquote>

No real time clock: Many of the armv7 devices do not have a

battery backed real time clock.

battery-backed real time clock. For this reason, using the <tt>-s</tt>

For this reason, using the "-s" option of

option of <a href="faq/faq6.html#OpenNTPD">OpenNTPD</a> may be desirable.

<a href="faq/faq6.html#OpenNTPD">OpenNTPD</a> may be desirable.

Distribution kernels must be converted before use:

Using U-Boot:

The distribution kernels are standard kernels, which can be used

for the <tt>-N</tt> option of

<a href="http://man.openbsd.org/?query=ps">ps(1)</a>,

<a href="http://man.openbsd.org/?query=vmstat">vmstat(8)</a>,

<a href="http://man.openbsd.org/?query=dmesg">dmesg(8)</a>,

<a href="http://man.openbsd.org/?query=iostat">iostat(8)</a>

and similar applications, but cannot be booted directly by the U-Boot

bootloader used on this platform.

This can be done using

<a href="http://man.openbsd.org/?query=mkuboot">mkuboot(8)</a>

Typical operation is something along these lines for OMAP/beagle:

# mkuboot -a arm -o linux -e 0x80300000 -l 0x80300000 bsd bsd.umg

</pre></blockquote>

for i.MX6:

# mkuboot -a arm -o linux -e 0x10300000 -l 0x10300000 bsd bsd.umg

</pre></blockquote>

where bsd is the name of the kernel you are converting.

U-Boot tricks:

<ul>

<li>Booting single user (OMAP/beagle):

U-Boot# mmc rescan

U-Boot# setenv bootargs sd0 -s

U-Boot# fatload mmc 0 0x82800000 bsd.umg

U-Boot# load mmc 0 0x82800000 bsd.umg

U-Boot# bootm 0x82800000

</pre></blockquote>

<li>Booting single user (i.MX6, mmc storage):

U-Boot# mmc rescan

U-Boot# setenv bootargs sd0 -s

U-Boot# fatload mmc 0 0x12000000 bsd.umg

U-Boot# bootm 0x12000000

</pre></blockquote>

<li>Booting single user (i.MX6, SATA storage):

U-Boot# sata init

U-Boot# setenv bootargs sd0 -s

U-Boot# fatload sata 0 0x12000000 bsd.umg

U-Boot# load sata 0 0x12000000 bsd.umg

U-Boot# bootm 0x12000000

</pre></blockquote>

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The latest supported OpenBSD/armv7 release is

<a href="58.html">OpenBSD 5.9</a>.

<a href="59.html">OpenBSD 5.9</a>.

Here are the

OpenBSD/armv7 5.9 installation instructions</a>.