diff options
| author | Francis Rowe <info@gluglug.org.uk> | 2014-12-13 15:17:28 +0000 |
|---|---|---|
| committer | Francis Rowe <info@gluglug.org.uk> | 2014-12-13 15:49:26 +0000 |
| commit | 052ef8ab3b6eb1cc98114f6ac8416d8e0eddbd6b (patch) | |
| tree | 6e6bb1b5bea76370941afc306d38dc7346714b01 /docs/install/bbb_setup.html | |
| parent | 83d4509a42cf0aa5491351c3066b9fac76dc0a87 (diff) | |
| download | librebootfr-052ef8ab3b6eb1cc98114f6ac8416d8e0eddbd6b.tar.gz librebootfr-052ef8ab3b6eb1cc98114f6ac8416d8e0eddbd6b.zip | |
Documentation: Remove all references to the bus pirate
Replace with BBB flashing tutorials.
Diffstat (limited to 'docs/install/bbb_setup.html')
| -rw-r--r-- | docs/install/bbb_setup.html | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/docs/install/bbb_setup.html b/docs/install/bbb_setup.html new file mode 100644 index 00000000..840b4ad3 --- /dev/null +++ b/docs/install/bbb_setup.html @@ -0,0 +1,332 @@ +<!DOCTYPE html> +<html> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1"> + + <style type="text/css"> + @import url('../css/main.css'); + </style> + + <title>Setup the BeagleBone Black as an SPI flashrom programmer</title> +</head> + +<body> + + <header> + <h1 id="pagetop">Setup the BeagleBone Black as an SPI flashrom programmer</h1> + <aside>How to use the BBB as an external flashrom programmer, for reading/writing an SPI flash chip.</aside> + </header> + + <p>Or go <a href="index.html">back to main index</a></p> + +<hr/> + + <h1 id="hardware_requirements">Hardware requirements</h1> + + <p> + Shopping list (pictures of this hardware is shown later): + </p> + <ul> + <li> + External SPI programmer: <b>BeagleBone Black</b> (rev. C) + is highly recommended. Sometimes referred to as 'BBB'. + </li> + <li> + Clip for connecting to the flash chip: <b>Pomona 5250</b> + (SOIC-8) or <b>Pomona 5250</b> (SOIC-16) is recommended + (<b>X200S and X200 Tablet users will need a soldering iron + instead</b>, because of the type of package the flash chip is + in on those machines). + </li> + <li> + <b>External 3.3V DC power supply</b>. The one used by this + author has the label HF100W-SF-3.3 on it, but any decent + supply will be fine. Some people use the 3.3V from an ATX + PSU for instance (the kind that you get on a typical + Intel/AMD desktop computer. 6A supply should be fine, + the one used by this author is 20A (it won't actually use + that, it's just what the PSU is capable of). + </li> + <li> + Dupont <b>jumper cables</b> (2.54mm / 0.1" headers) + You should get male-male, male-female and female-female + cables in 10cm and 20cm sizes. Just get a load of them. + </li> + <li> + <b>Mini USB A-B cable</b> (the BeagleBone probably already comes + with one.) + </li> + <li> + <b>FTDI serial board</b>, for unbricking the BeagleBone if + necessary. + </li> + <li> + <b>5V DC power supply</b> (from wall outlet to the BeagleBone). + The BeagleBone can have power supplied via USB, but a + dedicated power supply is recommended. + </li> + </ul> + + <p> + <a href="#pagetop">Back to top of page.</a> + </p> + +<hr/> + + <h1 id="configure_bbb">Configuring the BeagleBone Black</h1> + + <h2>Setting up the 3.3V DC PSU</h2> + <p> + With my PSU, first I had wire up the mains power cable. Any clover or kettle lead will do. Cut the end off (not the one + that goes in the wall, but the kettle/clover connector). + Strip the protection away by a decent length, then strip the wires inside so that a decent amount of + copper is shown. Then wire up earth/live/neutral. This will vary according to what country you live in + and/or the colour codes that your cable uses inside. <b>Make sure to get this right, as a botched job + could result in extreme damage to you and your surroundings. Here's what mine looks like after wiring up + the power cable: <a href="images/x200/psu_power.jpg">images/x200/psu_power.jpg</a> - also, make sure + that the plug (for the wall) has the correct fuse. In my case I had a 240V wall socket, and the device + says that it accepts 1.5A at that voltage, so I used the smallest fuse available (3A). For 110-120V the device + says it needs 2.8A.</b> Also, if yours looks like in the image linked above, make sure to wrap electrical tape (lots) + around it for safety. (otherwise, don't touch the terminals while the PSU is plugged in). + </p> + <p> + Now take a red and black 20cm female-female jumper lead, and cut one of the ends off. Strip away the bare copper by about 1 or + 1.5cm so you get this: <a href="images/x200/stripped_jumper_lead.jpg">images/x200/stripped_jumper_lead.jpg</a>. + </p> + <p> + Black goes on -V, red goes on +V. In my case, I removed those screws from my PSU like this: + <a href="images/x200/psu_screws_removed.jpg">images/x200/psu_screws_removed.jpg</a>. Then, + </p> + <p> + Then I twisted the exposed copper on the jumper leads (so that they don't fray), and wrapped each to one of the + screws each, around it near the head. I then screwed them in: + <a href="images/x200/psu_jumper_leads.jpg">images/x200/psu_jumper_leads.jpg</a>. + </p> + <p> + If you are using a different PSU, then the steps will change from those above. Anyway, once you are satisfied, + continue reading... + </p> + <h2>Setting up the BBB</h2> + <p> + Your BBB will have an sshd with no password on root. Find it's IP address + (it will use DHCP by default) and set a root password. The steps below + are done while SSH'd into a BBB. + </p> + <p> + Since it's a bare board (no case) and you are also touching inside your X200, you should be earthed/grounded. + <a href="images/x200/strap.jpg">images/x200/strap.jpg</a> shows how I earthed myself. This is to prevent you + from causing any ESD damage. The surface that you place components on should also be earthed/grounded. + (for this, I used a shielded ESD bag with a wire, copper exposed, attached from the bag to the exposed metal + part on a radiator, which was earthed - not professional, but it should work. see <a href="images/x200/mat.jpg">images/x200/mat.jpg</a>). + Most people ignore this advice and don't ground/earth themselves, at their own risk. You should also store the BBB + in a shielded anti-static bag when you are finished with it. + (the principles above apply to any computer components, since they are extremely sensitive te ESD). + </p> + <p> + These instructions may or may not work for you. They are simply the steps that this author took. + </p> + <p> + setting up SPIDEV on the BBB: <a href="http://elinux.org/BeagleBone_Black_Enable_SPIDEV#SPI0">http://elinux.org/BeagleBone_Black_Enable_SPIDEV#SPI0</a> + - If you only setup SPI0, you don't have to disable the HDMI out. (you only need one). + That guide is for seting up the device overlay for SPIDEV, last part is to make it persist across reboots. + Needed to turn the BBB into an SPI flasher. + </p> + <p> + Don't bother modifying uEnv.txt. it won't work; + use the workaround here instead: <a href="http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Loading_custom_capes">http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Loading_custom_capes</a>. + </p> + <p> + Follow the instructions at <a href="http://elinux.org/BeagleBone_Black_Enable_SPIDEV#SPI0">http://elinux.org/BeagleBone_Black_Enable_SPIDEV#SPI0</a> + up to (and excluding) the point where it tells you to modify uEnv.txt + </p> + <p> + You need to update the software on the BBB first. Before being able to use apt-get, + I had to use the workaround defined <a href="https://groups.google.com/forum/?_escaped_fragment_=msg/beagleboard/LPjCn4LEY2I/alozBGsbTJMJ#!msg/beagleboard/LPjCn4LEY2I/alozBGsbTJMJ">here</a>:<br/> + - Replace the contents of /etc/init.d/led_aging.sh with: + </p> +<pre> +#!/bin/sh -e +### BEGIN INIT INFO +# Provides: led_aging.sh +# Required-Start: $local_fs +# Required-Stop: $local_fs +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: Start LED aging +# Description: Starts LED aging (whatever that is) +### END INIT INFO + +x=$(/bin/ps -ef | /bin/grep "[l]ed_acc") +if [ ! -n "$x" -a -x /usr/bin/led_acc ]; then + /usr/bin/led_acc & +fi +</pre> + </p> + Run <b>apt-get update</b> and <b>apt-get upgrade</b> then reboot the BBB, before continuing. + </p> + <p> + Run those commands:<br/> + # <b>echo BB-SPI0-01 > /sys/devices/bone_capemgr.*/slots</b><br/> + Then I did:<br/> + # <b>ls -al /dev/spidev0.*</b><br/> + <i>ls: cannot access /dev/spidev0.*: No such file or directory</i><br/> + Then I rebooted and did:<br/> + # <b>cat /sys/devices/bone_capemgr.*/slots</b><br/> + Output: + </p> +<pre> + 0: 54:PF--- + 1: 55:PF--- + 2: 56:PF--- + 3: 57:PF--- + 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G + 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI +</pre> + <p> + And then:<br/> + # <b>ls /lib/firmware/BB-SPI0-01-00A0.*</b><br/> + Output: + </p> +<pre> +/lib/firmware/BB-SPI0-01-00A0.dtbo +</pre> + <p> + Then:<br/> + # <b>echo BB-SPI0-01 > /sys/devices/bone_capemgr.*/slots</b><br/> + # <b>cat /sys/devices/bone_capemgr.*/slots</b><br/> + Output: + </p> +<pre> + 0: 54:PF--- + 1: 55:PF--- + 2: 56:PF--- + 3: 57:PF--- + 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G + 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI + 7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-SPI0-01 +</pre> + <p> + Then check if the device exists:<br/> + # <b>ls -al /dev/spidev0.*</b><br/> + Output: + </p> +<pre> +ls: cannot access /dev/spidev0.*: No such file or directory +</pre> + <p> + It didn't exist under that name, but I then did:<br/> + # <b>ls -al /dev/spid*</b><br/> + Output: + </p> +<pre> +crw-rw---T 1 root spi 153, 0 Nov 19 21:07 /dev/spidev1.0 +</pre> + <p> + Now the BBB is ready to be used for flashing. Make this persist + across reboots:<br/> + In /etc/default/capemgr add <b>CAPE=BB-SPI0-01</b> at the end + (or change the existing <b>CAPE=</b> entry to say that, if an + entry already exists. + </p> + <p> + Now you will download and build <b>flashrom</b> on the BBB.<br/> + # <b>apt-get install libpci-dev pciutils zlib1g-dev libftdi-dev build-essential subversion</b><br/> + # <b>svn co svn://flashrom.org/flashrom/trunk flashrom</b><br/> + # <b>cd flashrom/</b><br/> + # <b>make</b> + </p> + + <p> + Now test flashrom:<br/> + # <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512</b><br/> + Output: + </p> +<pre> +Calibrating delay loop... OK. +No EEPROM/flash device found. +Note: flashrom can never write if the flash chip isn't found automatically. +</pre> + + <p> + This means that it's working (the clip isn't connected to any flash chip, + so the error is fine). + </p> + <h2> + Connecting the Pomona 5250/5252 + </h2> + <p> + Use this image for reference when connecting the pomona to the BBB: + <a href="http://beagleboard.org/Support/bone101#headers">http://beagleboard.org/Support/bone101#headers</a> + (D0 = MISO or connects to MISO). + </p> + + <p> + The following shows how to connect clip to the BBB (on the P9 header), for SOIC-16 (clip: Pomona 5252): + </p> +<pre> + NC - - 21 + 1 - - 17 + NC - - NC + NC - - NC + NC - - NC + NC - - NC + 18 - - 3.3V PSU RED + 22 - - NC - this is pin 1 on the flash chip +<i>This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.</i> +</pre> + <p> + The following shows how to connect clip to the BBB (on the P9 header), for SOIC-8 (clip: Pomona 5250): + </p> +<pre> + 18 - - 1 + 22 - - NC + NC - - 21 + 3.3V PSU RED - - 17 - this is pin 1 on the flash chip +<i>This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.</i> +</pre> + <p> + <b>NC = no connection</b> + </p> + <p> + <b><u>DO NOT</u> connect 3.3V PSU RED yet. ONLY connect this once the pomona is connected to the flash chip.</b> + </p> + <p> + <b>You also need to connect the BLACK wire from the 3.3V PSU to pin 2 on the BBB (P9 header). It is safe to install this now + (that is, before you connect the pomona to the flash chip).</b> + </p> + <p> + if you need to extend the 3.3v psu leads, just use the same colour M-F leads, <b>but</b> keep all other + leads short (10cm or less) + </p> + + <p> + <a href="images/x200/5252_bbb0.jpg">images/x200/5252_bbb0.jpg</a> and + <a href="images/x200/5252_bbb1.jpg">images/x200/5252_bbb1.jpg</a> shows a properly wired up BBB with Pomona + 5252 before being connected to the flash chip on the X200. + </p> + + <p> + That's basically it. Now refer back to the documentation for how to use this on your board. + </p> + + <p> + <a href="#pagetop">Back to top of page.</a> + </p> + +<hr/> + + <p> + Copyright © 2014 Francis Rowe <info@gluglug.org.uk><br/> + This document is released under the Creative Commons Attribution-ShareAlike 4.0 International Public License and all future versions. + A copy of the license can be found at <a href="../license.txt">../license.txt</a>. + </p> + + <p> + This document is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See <a href="../license.txt">../license.txt</a> for more information. + </p> + +</body> +</html> |