From 052ef8ab3b6eb1cc98114f6ac8416d8e0eddbd6b Mon Sep 17 00:00:00 2001 From: Francis Rowe Date: Sat, 13 Dec 2014 10:17:28 -0500 Subject: Documentation: Remove all references to the bus pirate Replace with BBB flashing tutorials. --- (limited to 'docs/install/bbb_setup.html') diff --git a/docs/install/bbb_setup.html b/docs/install/bbb_setup.html new file mode 100644 index 0000000..840b4ad --- /dev/null +++ b/docs/install/bbb_setup.html @@ -0,0 +1,332 @@ + + + + + + + + + Setup the BeagleBone Black as an SPI flashrom programmer + + + + +
+

Setup the BeagleBone Black as an SPI flashrom programmer

+ +
+ +

Or go back to main index

+ +
+ +

Hardware requirements

+ +

+ Shopping list (pictures of this hardware is shown later): +

+ + +

+ Back to top of page. +

+ +
+ +

Configuring the BeagleBone Black

+ +

Setting up the 3.3V DC PSU

+

+ 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. 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: images/x200/psu_power.jpg - 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. 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). +

+

+ 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: images/x200/stripped_jumper_lead.jpg. +

+

+ Black goes on -V, red goes on +V. In my case, I removed those screws from my PSU like this: + images/x200/psu_screws_removed.jpg. Then, +

+

+ 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: + images/x200/psu_jumper_leads.jpg. +

+

+ If you are using a different PSU, then the steps will change from those above. Anyway, once you are satisfied, + continue reading... +

+

Setting up the BBB

+

+ 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. +

+

+ Since it's a bare board (no case) and you are also touching inside your X200, you should be earthed/grounded. + images/x200/strap.jpg 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 images/x200/mat.jpg). + 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). +

+

+ These instructions may or may not work for you. They are simply the steps that this author took. +

+

+ setting up SPIDEV on the BBB: http://elinux.org/BeagleBone_Black_Enable_SPIDEV#SPI0 + - 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. +

+

+ Don't bother modifying uEnv.txt. it won't work; + use the workaround here instead: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Loading_custom_capes. +

+

+ Follow the instructions at http://elinux.org/BeagleBone_Black_Enable_SPIDEV#SPI0 + up to (and excluding) the point where it tells you to modify uEnv.txt +

+

+ You need to update the software on the BBB first. Before being able to use apt-get, + I had to use the workaround defined here:
+ - Replace the contents of /etc/init.d/led_aging.sh with: +

+
+#!/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
+
+

+ Run apt-get update and apt-get upgrade then reboot the BBB, before continuing. +

+

+ Run those commands:
+ # echo BB-SPI0-01 > /sys/devices/bone_capemgr.*/slots
+ Then I did:
+ # ls -al /dev/spidev0.*
+ ls: cannot access /dev/spidev0.*: No such file or directory
+ Then I rebooted and did:
+ # cat /sys/devices/bone_capemgr.*/slots
+ Output: +

+
+ 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
+
+

+ And then:
+ # ls /lib/firmware/BB-SPI0-01-00A0.*
+ Output: +

+
+/lib/firmware/BB-SPI0-01-00A0.dtbo
+
+

+ Then:
+ # echo BB-SPI0-01 > /sys/devices/bone_capemgr.*/slots
+ # cat /sys/devices/bone_capemgr.*/slots
+ Output: +

+
+ 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
+
+

+ Then check if the device exists:
+ # ls -al /dev/spidev0.*
+ Output: +

+
+ls: cannot access /dev/spidev0.*: No such file or directory
+
+

+ It didn't exist under that name, but I then did:
+ # ls -al /dev/spid*
+ Output: +

+
+crw-rw---T 1 root spi 153, 0 Nov 19 21:07 /dev/spidev1.0
+
+

+ Now the BBB is ready to be used for flashing. Make this persist + across reboots:
+ In /etc/default/capemgr add CAPE=BB-SPI0-01 at the end + (or change the existing CAPE= entry to say that, if an + entry already exists. +

+

+ Now you will download and build flashrom on the BBB.
+ # apt-get install libpci-dev pciutils zlib1g-dev libftdi-dev build-essential subversion
+ # svn co svn://flashrom.org/flashrom/trunk flashrom
+ # cd flashrom/
+ # make +

+ +

+ Now test flashrom:
+ # ./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512
+ Output: +

+
+Calibrating delay loop... OK.
+No EEPROM/flash device found.
+Note: flashrom can never write if the flash chip isn't found automatically.
+
+ +

+ This means that it's working (the clip isn't connected to any flash chip, + so the error is fine). +

+

+ Connecting the Pomona 5250/5252 +

+

+ Use this image for reference when connecting the pomona to the BBB: + http://beagleboard.org/Support/bone101#headers + (D0 = MISO or connects to MISO). +

+ +

+ The following shows how to connect clip to the BBB (on the P9 header), for SOIC-16 (clip: Pomona 5252): +

+
+ 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
+This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.
+
+

+ The following shows how to connect clip to the BBB (on the P9 header), for SOIC-8 (clip: Pomona 5250): +

+
+ 18              -       - 1
+ 22              -       - NC
+ NC              -       - 21
+ 3.3V PSU RED    -       - 17 - this is pin 1 on the flash chip
+This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.
+
+

+ NC = no connection +

+

+ DO NOT connect 3.3V PSU RED yet. ONLY connect this once the pomona is connected to the flash chip. +

+

+ 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). +

+

+ if you need to extend the 3.3v psu leads, just use the same colour M-F leads, but keep all other + leads short (10cm or less) +

+ +

+ images/x200/5252_bbb0.jpg and + images/x200/5252_bbb1.jpg shows a properly wired up BBB with Pomona + 5252 before being connected to the flash chip on the X200. +

+ +

+ That's basically it. Now refer back to the documentation for how to use this on your board. +

+ +

+ Back to top of page. +

+ +
+ +

+ Copyright © 2014 Francis Rowe <info@gluglug.org.uk>
+ 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 ../license.txt. +

+ +

+ 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 ../license.txt for more information. +

+ + + -- cgit v0.9.1