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Jesse Vincent

In which our hero travels from Tokyo to Boston in a single bound

11 min read


Last week, I was in Taipei for As usual the conference was well put together and had lots of tasty food.  After the conference, Audrey, Luke and I spent a few days working on new features for Checkmarkable, my startup Prime Radiant's product. I also met one of the guys behind Vortex keyboards and scored myself a sexy new KBT Pure 60% keyboard, but more on that another day.

 I spend a lot of time on airplanes. Specifically, I spend a lot of time on Oneworld airplanes.  Typically, I visit Taiwan once or twice a year. Nobody flies directly from Boston to Taipei. The most convenient flights for me to get from Boston to Taipei have historically been Boston-Chicago, Chicago-Tokyo and then Tokyo-Taipei.  I like having a convenient excuse to visit friends in Tokyo.

 As I was booking this year's trip to OSDC, I started fiddling with dates to see if I could shave a few hundred bucks off the somewhat heart-stopping fare that first popped up.  When I added a 3 day layover in Tokyo, the flights that came up were a little different than usual. Tokyo-Boston travel time was shorter by about 4 hours and the flight that popped up was a codeshare on JAL. (That it showed up as a direct flight wasn't the first thing that caught my eye. AA 154 shows up as NRT-BOS, but involves a layover, customs clearance and a plane change at O'Hare.)

 And then I noticed the equipment it said JAL would use for the flight - 787 - Boeing's new Dreamliner. I started poking around flyertalk and yep, JAL was coming to Boston - using the 787 for the first regularly scheduled route between Asia and Boston.  I dithered for a couple days and managed to miss getting a seat on the inaugural flight. As soon as _that_ happened, I clicked the "buy" button so I wouldn't miss my seat on the second 787 flight to Boston.

 Usually, I try really hard to fly on American Airlines "metal" for longhaul international travel -- The frequent flyer perks they give me every year include a few free upgrades for just about any flight, so long as it's on one of American's planes.  12+ hours in coach is typically a pretty brutal affair, but I was willing to make an exception...just this once.

 Because it was booked as a codeshare, I couldn't find any way to select my seat online. It seemed like it wouldn't matter very much even if I could -- JAL hadn't posted the seatmap for the 787 yet. (They wouldn't actually take delivery of the planes until March 27th.)  With a little bit of digging, I found out something interesting about how JAL assigns row numbers. Row 45 is always the exit row.

 So I called American.

"Hi, I'm flying on JAL 8 on April 23. Is there any way you can assign me a seat now?"

'Sometimes they let us. Sometimes they don't. I'd be happy to try for you, Mr Vincent.'

"Great! Is there any chance that there's a window seat in Row 45?"

'How's 45A?'

stunned silence

"...ok. That'd be great!"

This was the second flight of JAL's new 787 service to Boston. It was already mostly full. JAL's frequent flyers can book these seats online. And nobody had picked the exit row window.

Several weeks passed. I flew to Taipei. I spent a couple days in Tokyo. I saw Karen and Marty. I ate a bunch of incredibly tasty food.  I wandered around Akihabara.  

JAL lets you check in online up to 72 hours before your flight. American and JAL use different reservation networks, so my flight had an American PNR (Passenger Name Record - that 6 letter record locator code) and a JAL PNR. My American PNR wasn't letting me check in on I called up American and got my JAL PNR. That didn't work either.

This is when the most impressive and astonishing part of my travel experience happened. Sunday night, I opened up to confirm my flight details for the next morning and noticed the "Check in online" button at the bottom of the screen. This button has almost never worked for me for international flights on American. And this was a codeshare. I knew that pressing this button would show me a nice error message about how my flight wasn't actually eligible to check in online. When I clicked the button, nothing happened. I clicked it again. Nothing happened again. And then I noticed the "Popup blocked" message in the browser's URL bar. I allowed chrome to show me the error popup.

It wasn't an error popup. redirected me to and checked me in online and then emailed me a boarding pass. Airline IT isn't actually supposed to _work_.

Scrutinizing the boarding pass, I noticed my sequence number. (Most airline boarding passes show a number indicating the order in which passengers checked in)

   SEQ: 186

So, I was the 186th person to check in for the flight, a good 14 hours before departure. On most longhaul international flights, that number wouldn't be exceptional. On JAL's 787, it's a little surprising - It is a 186 seat aircraft. I haven't gone digging too deeply - It may just have been a bug or some nuance of JAL sequence I'm not aware of. Or I might indeed have been the last passenger to check in for the flight.

It took me...9 minutes from stepping off the Skyliner at Narita to the JAL Lounge.

I got to the gate about an hour before departure. Sure, I could have hung out in JAL's lounge longer, but DREAMLINER!  The departure area was already half full. And our plane was already at the gate, which wasn't too surprising. JAL 787 #1 wasn't actually back from its maiden flight to Boston yet. This plane was brand new.

It was parked next to a BA 777. Compared to the gorgeous curved wings of the 787, the 777 just looked...clunky and dated.


More people were taking pictures of the departure board than the plane. Go figure.

Boarding started about 10 minutes late. The fabled arched entryway of the 787 was...nice, but nothing to write home about. . o O { Though I suppose I just have }


I walked back through Business and the first bit of economy to seat 45A. Before I got there, I didn't really know what to expect. I could have had a cold, cramped little seat with no window. That sometimes happens in exit rows. But no. The seat was fairly roomy (very roomy for JAL). It reclined. The video monitor and tray were in the armrest.


And if I stretched my legs out as far as I could, I could just barely use the emergency exit door as a footrest.

The 787's windows don't have shades. They have a dimmer that lets you set 5 levels of blue-tinted transparency.  I immediately started playing with the window's controls. The windows don't go all the way opaque, but the darkest setting is enough to keep the interior pretty dark, even in bright sunlight.

Speaking of windows - They promised us a window in the bathroom. That one does have a shade...when it exists. No such luck in JAL Economy.


The interior of the plane definitely felt roomier and airier than a 767, though not much more spacious than a 777. Not bad for a plane with 10 rows of Business and 17-odd rows of Economy.  Boarding was mercifully quick - the plane was full, but there just weren't that many passengers.

Before we took off, a flight attendant brought over the "responsibilities of passengers in the exit row" cards and asked if we'd be willing to follow crew-member instructions in the unlikely event of an Japanese. Apparently, I nodded well enough.

Our taxi out to the runway took 20+ minutes. On the ground, the 787's wings are incredibly bouncy. I know they've passed some impressive wing-break tests, but it was just slightly terrifying.

It was a gray, rainy day - takeoff was a little bit bumpy and the flight didn't really even out for about 45 minutes.

Inside, the 787 is quiet, but not astonishingly so. You can't forget you're on an airplane.

JAL's inflight entertainment system was..decent. It was snappy and actually registered touches when you touched the screen. The interactive maps were pretty and responsive.  The "I'm working" watch cursor made it pretty obvious that (like many IFE systems) it was running X (and presumably Linux.)  Unfortunately, I'd already seen every movie I wanted to of their relatively thin selection.

The IFE had a feature I've never seen anywhere else....ebooks. In this case, branded as "JAL Sky Manga" - They say that they're working on an English version, but for now, it's all in Japanese. They had a few dozen manga to choose from, divided into general interest, Boys' Manga and Girls' Manga. I think the most surreal part of it was the pageturn navigation -- To go to the next page, you click the left arrow on your remote. To go to the previous page, you click the right arrow. It makes perfect sense. Japanese books start from what I, as an American cultural absolutist would call the "back" of the book.

In coach, we were fed 3 times. The first meal was a choice between chicken curry and something described to me as "Japanese Pork" - In general, the flight attendants spoke to me in Japanese. I know enough food words that this wasn't actually a big deal (and I know they spoke to other Western passengers in English. Go figure) Desert after the first meal was a "Boston 1955" Mr Donut ice cream sandwich.  The ice cream was light and airy and a little bit too frozen. 

The second food service was a cup of soup and a Danish.

The third food service was...clam chowder and "AIR MISDO" - I know you're all dying to know if JAL can pull off a competent New England Clam Chowder.  I'm a bad New Englander - I don't really like chowder on the best of days. I chose to skip the airplane chowder.  I'm sorry I've let you down.


AIR MISDO was...reasonably decent. A pair of small, cakey donuts. One with chocolate and sprinkles. One plain.

I spent most of the flight coding. If you know me, that should tell you just about everything you need to know about the flight's comfort. The 787 has in-seat universal sockets at every seat. Mine cut out for 30-90 seconds every 20 minutes or so, but on the whole behaved itself.

One of the cool things about the 787 is that, because it's made of carbon fiber instead of aluminum, they can keep it pressurized to something that approximates sea level much more closely than any plane you've ever flown on. Coming off the plane, @rasmus asked me if I'd noticed the difference. Indeed I had. Usually, I feel fairly...freeze-dried after 13 hours in a small tube in the sky. I felt a lot less shattered than usual after this flight.

As we were disembarking, the staff were handing us each a card:

R6081504.jpg R6081502.jpg

Arriving at Logan, we appeared to be the ONLY plane at the international part of Terminal E. 11:30AM isn't exactly a common time for flights to and from Europe  and nobody else is flying from Boston to Asia. A quick Global Entry scan and I was through passport control and down at the baggage claim. The siren started screeching, the conveyor started rolling bag was the first one to drop onto the belt.

From there, I made my way to Terminal B and had lunch with @schwern and @noirinp, who were on their way to PDX by way of DFW.

After lunch, I collapsed into a cab and made my way home to a pair of very cross cats who quickly forgave me for my long absence and a very, very long afternoon before finally collapsing into bed at a respectable 10pm.

Overall, I was really quite impressed by the 787. It's a nice, comfortable modern aircraft. I'd totally fly to Tokyo in Economy on JAL's 787 service again.

I have a few more pictures up on Flickr.


Jesse Vincent

Froyo for nookcolor

16 min read




If you've read my blog for a while, you've probably seen my unfortunate interactions with Barnes and Noble trying to buy a nook last Christmas. You've also probably seen some of my Kindle hacking and Android development work.

The big takeaway from last Christmas was "don't by a nook"

The nookcolor is B&N's latest - a 7 inch eReader.

Calling it an eReader is somewhat disingenuous. It's somewhat different from the original nook:

  • No 3G
  • No E Ink screen
  • 50% heavier than the original nook

Like the original nook, it's running Android. It has a microSD slot. And it's been rooted. (Not by me.)

I've been on the road for work a lot lately. That usually means I have rather a lot of time to kill in the evenings. Last Wednesday night, I found myself in a Barnes & Noble store in Northern Virginia. I wanted to check out the new nookcolor, but, well, I wasn't about to give Barnes & Noble any more of my money.

I walked in the front door to find one of the booksellers standing in front of the nook kisok messing around with the nookcolor. I asked if I could play with it for a moment.

As I popped into the Setttings menu, she started to tell me about the device. I'm...not quite sure how it happened, but some of the first words out of her mouth were "It's been rooted, you know."

I guess I look the part.

I played with the device for a while. It felt reasonably solid and was impressively speedy. The bookseller (I've forgotten her name :/) started talking about how much she was looking forward to a community port of Froyo.

My resolve began to weaken, but I knew that I knew nothing about the internals of the device and I wasn't about to buy another Android tablet with an anemic CPU. (I bought a ZT-180 from China and dropped my PixelQi display into it, just to see if it would work. I bought a Viewsonic G Tablet a couple weeks ago with the same intent, but haven't fully disassembled it to get to the display yet.)

I played my get out of jail free card: "So, uh, I suspect that this isn't the typical sort of question you get about the nookcolor, but how fast is the CPU?"

"It's 800MHz."

I bought one. And sat down in the B&N cafe. I used their free wifi to download nooter from nookdevs.

15 minutes later, I had ADW.Launcher, Angry Birds and K-9 Mail installed. Angry Birds was remarkably smooth.

Like everyone else, I spent some time messing around on the device, which identified itself as a "LogicPD zoom2" internally.

"Wow. This is a pretty standard Android device. I wonder how hard a vanilla Android build would be."

Flash forward to Friday.

B&N finally shipped bootloader and kernel source. The source distribution was a zip file containing "Documents and Settings/awu/Desktop/distro.tar"

The content inside the tarball left a bit to be desired. I haven't yet found enough markers to figure out what kernel tree and tag was used as the branchpoint, so I don't know precisely what the local changes are.

I have made reasonable headway on figuring that out, though.

I started reading up on the relevant bits.

Meanwhile, this YouTube video was NOT posted by me:

Over the past couple days, with help from [mbm] on (who did all this before I did ;), I've cobbled together a basic working Froyo userland.

Below is a first pass braindump of what I've done. I'm 100% sure I'm missing steps - and what I have running so far is hardly something I'd want to run full time on my device.

Per usual, what you're doing could turn your device into an expensive paperweight. (It's too flat to make a decent doorstop.)

As nooter (the nookcolor rooting tool) showed us, the nookcolor can boot from SD. In fact, it's set to prefer to boot from SD. This makes development rather less painful than it might otherwise be.

I initially started building a full cleanroom filesystem, but [mbm] convinced me that it's a bit easier to start off with the working nookcolor filesystem image and customize from there. Long term, this is obviously not the right plan.

Root your nookcolor (nc) with nooter.

Download a full filesystem image from the nc. There are a few ways to do this. The fastest is to dd to a local filesystem on the flash card. and mount that on your workstation. The most trivial is:

adb pull /dev/block/mmcblk0 ./nook-8-gig-raw-filesystem

You'll need a MicroSD card of at least 8 gigs to drop this filesystem onto. This will (sort of obviously) obliterate every single bit on that MicroSD.

dd  /dev/sdX

When you pop the MicroSD out and re-insert it, you'll likely see a whole bunch of partitions automount.

Be careful not to distribute this SD image, as the factory partition contains a zip file including a full (proprietary) OS image and the rom partition includes personal device details.

If you stick this into your nc, it should boot to the regular nook image using the boot partition on the MicroSD card.

Right now, the one you REALLY care about is "boot" (On ubuntu, it'll mount as /media/boot). It's a VFAT filesystem on partition 1.

For now, what we care about on that filesystem is uRamdisk, the boot ramdisk. As of this moment, it's set up to mount the nook's internal flash and continue boot from there.

Make a backup of uRamdisk.

uRamdisk is a u-boot filesystem.

You need to unpack it, twiddle some bits and repack it. I have some tools for this, which I'll publish to github as soon as I untangle them from the rest of the nook image in my local repo (Which contains B&N code I can't distribute because it's not obviously under an opensource license).

There's likely a correct way to do this, but the quick-and-dirty way was a bit easier for me to sort out. u-boot ramdisks are gzipped cpio archives with a 64 byte header.

My "unpack" script looks like this:

mkdir work-$$
dd if=$IMAGE of=/tmp/image.cpio.gz bs=64 skip=1
zcat /tmp/image.cpio.gz > work-$$.cpio
cd work-$$
cpio -i -F ../work-$$.cpio
echo "Unpacked ramdisk is in work-$$"

The two files you really care about right now are env.txt and init.rc

Right now, all we care about is twiddling pointers to partitions.

env.txt should look like this:

bootargs=console=ttyS0,115200n8 androidboot.console=ttyS0 root=/dev/mmcblk1p2 rw rootdelay=1 mem=512M init=/init videoout=omap24xxvout omap_vout.video1_numbuffers=6 omap_vout.vid1_static_vrfb_alloc=y omapfb.vram=0:8M
bootcmd=mmc 0 read 0x800 0x81c00000 ${kernel_size}; bootm 81c00000
recovery=echo recovery mode

I've altered the bootcmd's pointer from "mmc 1" to "mmc 0" - this is very much cargo-culting based on the TI docs and not something I've looked at.

Similarly, I've flipped the "root" argument of "bootargs" from mmcblk0p2 to mmcblk1p2. It shouldn't really matter.

EDIT: Turns out this isn't strictly necessary

In init.rc, anywhere the mmcblk0 is mentioned, make it mmcblk1

I also forced adb to always start, just for ease of development.

Now you'll want to repack the ramdisk. My "repack" script looks like this:

DIR="$( basename `pwd`)"
cpio -i -t -F ../${DIR}.cpio | cpio -o -H newc -O ../ramdisk-repacked-${DIR}.cpio
cd ..
gzip ramdisk-repacked-${DIR}.cpio
./mkimage  -A ARM -O Linux -T RAMDisk -C gzip -n Image -d ramdisk-repacked-${DIR}.cpio.gz uRamdisk-${DIR}

mkimage is a standard tool from the u-boot tools directory shipped as part of the B&N nookcolor sourcedrop. I'd assume that the mkimage from any copy of u-boot would be fine.

Once you repack the ramdisk, put it back on the boot partition as uRamdisk.

Umount all the filesystems on the MicroSD, eject the MicroSD and drop it in your nc.

Boot your nc. It should boot normally.

Once it's booted, use adb shell to check that filesystems are mounted from mmcblk1 and not mmcblk0

You can now shutdown your nook.

You have a full OS image on SD.

It's now time for the interesting bit, building Android.

I built from TI's omapzoom branch of Android - They're the folks who make the innermost parts of the nc. should tell you everything you need to know about using repo to clone the repositories, check out froyo and build.

You'll need a crosscompiler. TI recommend:

Follow the instructions for zoom2

Once the build is done, put your MicroSD card back in the nc. This time, you're looking for the system partition (sdX5).

You have two options. You can either wipe out B&N's Android build entirely and install the pristine zoom2 build or you can overlay the zoom2 build on top of B&N's build of Eclair.

I went for the former, though [mbm] had better luck with the latter, as it means you won't have to pick out proprietary libraries and tools and install them one by one.

Obviously, if you use any of the B&N bits, you MUST not distribute your filesystem image. It appears that TI publishes just about every proprietary bit we could possibly want on their GForge instance, though I haven't actually dug in too deep just yet.

You'll want to neuter etc/vold.* on the system partition once you've installed the new image, as it tries to mount an sd card that's now... otherwise occupied.

Once you're done with this, it's time to go back to work on your uRamdisk image, since froyo wants somewhat different startup bits than eclair.

I ended up with something a bit wonky causing mount failures as I was migrating init.rc to froyo. Again, this is courtesy of [mbm]:

	--- ../work-20413/init.rc   2010-12-05 11:22:40.514818375 -0500
+++ init.rc 2010-12-04 21:34:36.209385337 -0500
@@ -1,4 +1,3 @@
-# init.rc used on Encore hardware
on early-init
# Give the kernel time to enumerate the internal and external MMC/SD cards
@@ -16,7 +15,8 @@
export ANDROID_ROOT /system
export ANDROID_ASSETS /system/app
export ANDROID_DATA /data
-    export EXTERNAL_STORAGE /sdcard
+    export EXTERNAL_STORAGE /mnt/sdcard
+    export ASEC_MOUNTPOINT /mnt/asec
export INTERNAL_STORAGE /media
export BOOTCLASSPATH /system/framework/core.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar
export DSP_PATH /system/lib/dsp
@@ -37,16 +37,39 @@
# Backward compatibility
symlink /system/etc /etc
-# create mountpoints and mount tmpfs on sqlite_stmt_journals
+# create mountpoints
+    mkdir /mnt 0775 root system
+    mkdir /mnt/sdcard 0000 system system
+# Create cgroup mount point for cpu accounting
+    mkdir /acct
+    mount cgroup none /acct cpuacct
+    mkdir /acct/uid
+# Backwards Compat - XXX: Going away in G*
+    symlink /mnt/sdcard /sdcard
mkdir /system
-    mkdir /tmp 0777
mkdir /data 0771 system system
mkdir /cache 0770 system cache
mkdir /media 0777 system system
-    mkdir /sdcard 0777 system system
-    mkdir /sqlite_stmt_journals 01777 root root
mkdir /rom 0777 root root
-    mount tmpfs tmpfs /sqlite_stmt_journals size=4m
+    mkdir /config 0500 root root
+    # Directory for putting things only root should see.
+    mkdir /mnt/secure 0700 root root
+    # Directory for staging bindmounts
+    mkdir /mnt/secure/staging 0700 root root
+    # Directory-target for where the secure container
+    # imagefile directory will be bind-mounted
+    mkdir /mnt/secure/asec  0700 root root
+    # Secure container public mount points.
+    mkdir /mnt/asec  0700 root system
+    mount tmpfs tmpfs /mnt/asec mode=0755,gid=1000
mount rootfs rootfs / ro remount
@@ -55,6 +78,46 @@
write /proc/cpu/alignment 4
write /proc/sys/kernel/sched_latency_ns 10000000
write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000
+    write /proc/sys/kernel/sched_compat_yield 1
+    write /proc/sys/kernel/sched_child_runs_first 0
+# Create cgroup mount points for process groups
+    mkdir /dev/cpuctl
+    mount cgroup none /dev/cpuctl cpu
+    chown system system /dev/cpuctl
+    chown system system /dev/cpuctl/tasks
+    chmod 0777 /dev/cpuctl/tasks
+    write /dev/cpuctl/cpu.shares 1024
+    mkdir /dev/cpuctl/fg_boost
+    chown system system /dev/cpuctl/fg_boost/tasks
+    chmod 0777 /dev/cpuctl/fg_boost/tasks
+    write /dev/cpuctl/fg_boost/cpu.shares 1024
+    mkdir /dev/cpuctl/bg_non_interactive
+    chown system system /dev/cpuctl/bg_non_interactive/tasks
+    chmod 0777 /dev/cpuctl/bg_non_interactive/tasks
+    # 5.0 %
+    write /dev/cpuctl/bg_non_interactive/cpu.shares 52
+    # Create dump dir and collect dumps.
+    # Do this before we mount cache so eventually we can use cache for
+    # storing dumps on platforms which do not have a dedicated dump partition.
+    mkdir /data/dontpanic
+    chown root log /data/dontpanic
+    chmod 0750 /data/dontpanic
+    # Collect apanic data, free resources and re-arm trigger
+    copy /proc/apanic_console /data/dontpanic/apanic_console
+    chown root log /data/dontpanic/apanic_console
+    chmod 0640 /data/dontpanic/apanic_console
+    copy /proc/apanic_threads /data/dontpanic/apanic_threads
+    chown root log /data/dontpanic/apanic_threads
+    chmod 0640 /data/dontpanic/apanic_threads
+    write /proc/apanic_console 1
# mount MMC partitions
mount vfat /dev/block/mmcblk1p2 /rom sync noatime nodiratime uid=1000,gid=1000,fmask=117,dmask=007
@@ -382,8 +445,8 @@
service vold /system/bin/vold
socket vold stream 0660 root mount
-#service mountd /system/bin/mountd
-#    socket mountd stream 0660 root mount
+service netd /system/bin/netd
+    socket netd stream 0660 root system
service debuggerd /system/bin/debuggerd
@@ -396,10 +459,13 @@
service zygote /system/bin/app_process -Xzygote /system/bin --zygote --start-system-server
socket zygote stream 666
onrestart write /sys/android_power/request_state wake
+    onrestart write /sys/power/state on
+    onrestart restart media
service media /system/bin/mediaserver
user media
-    group system audio camera graphics inet net_bt net_bt_admin
+    group system audio camera graphics inet net_bt net_bt_admin net_raw
+    ioprio rt 4
service fw3a /system/bin/fw3a_core
user root
@@ -421,6 +487,37 @@
user bluetooth
group bluetooth net_bt_admin
+service bluetoothd /system/bin/bluetoothd -n
+    socket bluetooth stream 660 bluetooth bluetooth
+    socket dbus_bluetooth stream 660 bluetooth bluetooth
+    # init.rc does not yet support applying capabilities, so run as root and
+    # let bluetoothd drop uid to bluetooth with the right linux capabilities
+    group bluetooth net_bt_admin misc
+    disabled
+service hfag /system/bin/sdptool add --channel=10 HFAG
+    user bluetooth
+    group bluetooth net_bt_admin
+    disabled
+    oneshot
+service hsag /system/bin/sdptool add --channel=11 HSAG
+    user bluetooth
+    group bluetooth net_bt_admin
+    disabled
+    oneshot
+service opush /system/bin/sdptool add --channel=12 OPUSH
+    user bluetooth
+    group bluetooth net_bt_admin
+    disabled
+    oneshot
+service pbap /system/bin/sdptool add --channel=19 PBAP
+    user bluetooth
+    group bluetooth net_bt_admin
+    disabled
+    oneshot
service installd /system/bin/installd
socket installd stream 600 system system
@@ -432,8 +529,6 @@
service ifcfg_ti /system/bin/ifconfig tiwlan0 up
@@ -447,6 +542,19 @@
+service racoon /system/bin/racoon
+    socket racoon stream 600 system system
+    # racoon will setuid to vpn after getting necessary resources.
+    group net_admin
+    disabled
+    oneshot
+service mtpd /system/bin/mtpd
+    socket mtpd stream 600 system system
+    user vpn
+    group vpn net_admin net_raw
+    disabled
+    oneshot
service keystore /system/bin/keystore /data/misc/keystore
user keystore
@@ -463,5 +571,7 @@
service debuglog /system/bin/
user root
+service dumpstate /system/bin/dumpstate -s
+    socket dumpstate stream 0660 shell log
+    disabled
+    oneshot

At this point, (assuming I haven't forgotten anything), you should have a MicroSD that will boot froyo on a nookcolor.

...and then immediately shut down, ostensibly due to power issues. My sneaking suspicion is that this is because the kernel the nc is booting from is B&N's original 2.6.29 image and there's been a bit of skew in how it reads some bit of information out of /proc.

The correct next step is to go and build a proper kernel for the device.

The easy next step is to perform a brutal hackjob on android's batteryservice.


Edit: I have no reason to believe that this is actually likely. But it'd be double-plus irresponsible of me to suggest that turning off a hardware safety feature was a good idea.


	jesse@puppy ~/android-omapzoom/frameworks/base/services ((6c81cb0...) *) $ git diff
diff --git a/services/java/com/android/server/ b/services/java/com/android/server/
index 5cf61bd..bf96479 100644
--- a/services/java/com/android/server/
+++ b/services/java/com/android/server/
@@ -176,8 +176,8 @@ class BatteryService extends Binder {
void systemReady() {
// check our power situation now that it is safe to display the shutdown dialog.
-        shutdownIfNoPower();
-        shutdownIfOverTemp();
+        //shutdownIfNoPower();
+       // shutdownIfOverTemp();
private final void shutdownIfNoPower() {
@@ -210,8 +210,8 @@ class BatteryService extends Binder {
boolean logOutlier = false;
long dischargeDuration = 0;
-        shutdownIfNoPower();
-        shutdownIfOverTemp();
+      //  shutdownIfNoPower();
+        //shutdownIfOverTemp();
mBatteryLevelCritical = mBatteryLevel 

Once you've rebuilt the android core and reinstalled it on your system partition, you should now have something that boots froyo on your nook.

This froyo is VERY MUCH not ready for primetime. Don't expect WIFI, Bluetooth, Google Apps, reasonable performance, sensor access, etc.

TI distributes wifi drivers and all the hardware acceleration you could possibly want:

This all would have taken me a great deal longer without [mbm]'s assistance and advice.

My next steps will (probably) be to try to build a modern kernel from source and see what that does for driver support.

Please note that I don't plan to build a distributable ROM or to port Cyanogenmod, though I'd be thrilled to see someone pick up the torch and do so.

I can't distribute the OS image I have, as it contains a mix of free stuff and proprietary stuff pulled off of my nookcolor's system partitions.

If you're looking to chatter with folks about development for the nookcolor, I'd recommend on