gmane.linux.gentoo.embedded

default fp selection with armv6/armv7 targets

Mike Frysinger — 2012-05-18T05:10:46

currently, we have the system:
- if chost matches *-softfloat-*, you get softfloat
- if chost matches *-hardfloat-*, you get hardfloat
- for everything else, you get the gcc default

with the standardization work going on with armv7+ and hardfp, i've made the 
following change:
- if chost matches armv7*-softfloat-*, you got softfloat
- for all other armv7* targets, you get hardfloat vfp3-d16

along those lines, i've also slipped in:
- if chost matches armv6*-softfloat-*, you got softfloat
- for all other armv6* targets, you get hardfloat vfp

considering vfp is required baseline in these cores now, it doesn't make sense 
to not use it if the user has explicitly stated they're targeting these 
arches.

if you really want to use a different default, you can still use EXTRA_ECONF to 
set whatever you want.
-mike

software and license (Ed W)

wireless — 2012-04-25T17:39:25

Hello Ed W et. al,

I remember  about the software listings and license issues
you have discussed recently on this list. I was looking at
an Archos 101 tablet

http://www.archos.com/products/ta/archos_101it/tabletpc.html?country=kg&lang=en

And started looking at the Angstrom Linux distro (which is a package 
manger? ) on top of OE. The Angstrom distribution page:

http://www.angstrom-distribution.org/building-angstrom


Has a button called the  "Online builder". <select that option>

Down the page, select "Advanced" and out puts a menu of choices.

One is called the  "software manifest":

"yes will generate a software manifest with e.g. versions and licenses 
of the installed packages"

http://narcissus.angstrom-distribution.org/


That's all I know, but it looks cool and exactly what you were looking for?

Whoever is working on the bug you filed to add some sort of software
listing and corresponding licenses to embedded Gentoo, should take a 
look at this page, imho.

hth,
James

Re: Install manual for Pandaboard

Manuel Lauss — 2012-04-23T14:40:10

Do you know of any (not too expensive ones) ?
I recently acquired a CuBox, but that's an "older" core generation :)

Manuel

Re: Install manual for Pandaboard

wireless — 2012-04-23T14:20:49


Yes, nicely put. I should have been a bit more specific
as my interest is in finding an existing
A-15 hardware dev board?

Preferable one (A-15) that others on this list are
planning on acquiring?


James

Re: Install manual for Pandaboard

Manuel Lauss — 2012-04-23T14:10:17

C-A9 and C-A15 are implementations of ARMv7.  Identical userspace
works on both.  Best case, all you need are different kernels for omap4 and 5
(or the Cortex-A CPU / Board of your choice).

Manuel

Install manual for Pandaboard

wireless — 2012-04-23T13:53:07

Hello,

I was just looking at the G embedded handbook and noticed
there is not link to the:
"Documentation about installing Gentoo on the Pandaboard"
like the other supported boards listed.

Maybe link or copy this document:
http://dev.gentoo.org/~armin76/arm/pandaboard/install.xml

Oversight? Intentional? File a bug report?


I also noticed there is no support for the
Omap 4460 version of the panda board?

Is there any interest to support the Omap 4460
dual A9 core version?

Issues with the OMap 4460 version of the pandaboard?

I'm really curious about any plans for E. Gentoo support on the
Omap 5 (ARM 15) platform ???

curiously,
James

Re: GPS board

wireless — 2012-04-17T13:17:34



Ed,

You have given me lots to think about. No doubts I do not want to
reinvent the wheel. I have some (consulting) deliverables to finish up
before I can devote myself to this pursuit.....

I'll be in touch.


James

Re: GPS board

Ed W — 2012-04-17T09:15:23


If you want this to scale to potentially commercial end users, I would 
consider an NMEA based off the shelf sensor?  Although the prices are 
quickly > £100, ie non trivial, NMEA 0183 sensors are plentiful and 
NMEA2K is getting rapidly available (add an Actisys bridge to get data 
into the computer)


Can you not download openstreetmap?

Your bigger issue is that it's not really a nautical mapping system?

In the USA you can have all the raster nautical and aviation maps for 
free (cool).  The argument goes that the tax payer already paid for 
them, so the data is made completely freely available



I think you should consider some other options also:

- Small embedded server which collects the information, with a handheld 
system then connecting via http or similar.  I like the PC Engines Alix 
boards.
- OpenCPN customised for your needs

The top one is similar to something I'm working on.  We 
(http://www.mailasail.com) are building a small embedded router for 
connecting all the communications bits o

Re: GPS board

Peter Stuge — 2012-04-16T15:27:45

You can do that as well. I think you need to spend more time with the
project than one day.



It's a good idea.



Do AD as close to the sensor as possible. I would use a digital bus
back to the pandaorwhatever.



I guess not much there.



Yes.


//Peter

Re: GPS board

wireless — 2012-04-16T14:57:22

Great ideas.


First generation, I thinking Arm9, maybe a pandaboards with some LED 
screen mounted together with 2" nylon standoffs. That way, when
I figure out how to add a board that receives and processes signals
from the depth finder, I can use 12 or 14 bit AD to input into
the panda board.

I may also rig a temperature sensor to the boat hull, or via a tether.

What concerns me about openstreetmap, is I had envisioned a system where
the database is downloaded to the operator's embedded system depending
on the anticipated area of local/regional travel, thus not having to
depend on constant/reliable internet access.

Sort of a GPS/nautical navigation system, under the control of the
operator. I'm still learning about openstreetmap so I have moved those
issues (as suggested by our Mike) to that forum, for now.

 From my initial research so far, nothing exist for a marine
environment, so I'll most like roll-it, including some epoxy
coatings and daughter board on the first-gen effort.

My reason for using

Re: GPS board

Ed W — 2012-04-16T12:42:05

Nokia N900 or new N9 (I have an N9, but the N900 probably has more 
hackers around it and cheaper second hand items)

Build something around a gumstix - not that cheap, but I think they have 
all the bits ready to plug together. Probably low enough power you could 
battery power it

Very easy to hack is a PC Engines Alix + laptop screen.  (In some ways 
that's called a 1 laptop per child I guess.... Add that to the list)

Good luck finding a Gentoo friendly tablet?  I would be interested if 
you find something?

Good luck

Ed W

Re: GPS board

YoYo Siska — 2012-04-15T11:15:29

Most people around openstreetmap are software / geography people, so
they mostly use what's readilly awailable (GPS loggers, JavaME phones
some time ago, smartphones now). I've seen hardware projects on the
level "how to make a bike holder for XYZ" or "how to get a PDA and
logger work together and with a large battery". There's a hardware page
on the wiki [1] (if you haven't found it already), but it seem pretty
outdated. As osm is opensource centered, there are/were  people playing
with open hardware / technologies stuff (openmoko phones, beagle/panda
board with a gps receiver etc...)

There's also a foss-gps mailing list [2], though IIRC there are mostly
software guys who talk about how to work with lower level GPS data.



There are basically two distinct activities in OSM: the collection of
GPS logs/tracks and then the creation of the map/database itself based
either on those logs or any other freely available sources. For land
based information the elevation doesn't really get entered into the
database

Re: GPS board

Mike Frysinger — 2012-04-14T21:21:06

probably better to ask in their forums
-mike

Re: GPS board

wireless — 2012-04-14T18:56:42

EXCELLENT!

OK so to help create maps, I'm think of designing (cobbling together
initially) a gps, and a (water) depth reading output, so in a boat, I 
can begin mapping the near shore environment.

How does open street map data get created and are there existing
open source embedded boards one can buy, install in a car and help
extend/enhance the data collected?  Or, roll your own?

It seem they already have the land methodologies developed, what
about near-shore marine? Any open source software efforts for that
yet?

In the past I did run across some for when you are out in the 
wilderness, but, I did not save the links.....

I just got my account, so I'll be looking into
opensteetmap...


James

Re: GPS board

Peter Stuge — 2012-04-14T18:38:27

Start with http://openstreetmap.org/


//Peter

GPS board

wireless — 2012-04-14T18:34:54

Hello Gentoo-embedded world,

Well, I just had my Garmin 1490T die
and it's only 2 years old. (a little bit
hacked off about this, as the unit was well
cared for.

So, I'm looking at options to build/hack a
GPS device, combined with some sort of
embedded gentoo friendly Tablet.


I'm thinking of multiple channels
of audio output so it is a 5.1 mp3 player too,
for a boat or a RV or an car. Mobile so it can
be moved between vehicles with a quick connect
to sensors and speakers.

Previously, I have stumbled across sites
where folks have started developing street,
wilderness and near shore maps for marine
navigation. I have not formally researched
open source mapping efforts, so any feedback
on that issue is keenly welcome.

Any discussion, or recommendations on an
open source project, I could build upon
would be keen. Such things and GPS rf
chip solutions, audio chips, SOC (that run
embedded linux easily, dev boards from
semiconductor companies, open source boards
(with e_gentoo already installed, etc etc.

You

Re: test

Mauro Faccenda — 2012-04-04T21:12:42

rst

Re: test

Matthijs Kooijman — 2012-04-03T18:35:51

synack

test

Christopher Friedt — 2012-04-03T18:29:59

syn

Re: /lib/libgcc_s.so.1 does not belong to any package?

Mike Frysinger — 2012-03-23T16:07:05

gcc-config-1.6 does this now
-mike

Re: /lib/libgcc_s.so.1 does not belong to any package?

Mike Frysinger — 2012-03-19T19:32:18

true, but the copying process to /lib is pretty orthogonal to that.  if 
anything, i plan on deprecating the gcc-config logic to only copying to /lib if 
it detects that /usr is split.

as for the libgcc_s.so missing completely, today you have to:
ROOT=/usr/${CTARGET} emerge sys-devel/gcc
as libgcc_s.so isn't the only library you're missing.  none of the gcc libs 
are installed in there (libstdc++, libmudflap, libgfortran, etc...).

might be another useful hack script to include in crossdev ... give it a 
/usr/$CTARGET to transparently sync gcc libs into from your cross-compiler.  
obviously if you want to run `gcc` on the target though you're going to have 
to do what i said above with the ROOT/emerge.


there are some things which we do not currently install with the cross-
compiler glibc.  in the past, we didn't install any /bin or /sbin executables 
at all, although that's changed recently.  quickly checking the ebuild shows 
that none of the locale helper scripts are installed.  it wasn't my original