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-[[PageOutline]]
-
-= Upgrading Cryptech Alpha HSM to "ksng" development package =
-
-This page attempts to explain the upgrade procedure for testing out
-the new "ksng" development branch of the Cryptech Alpha firmware.
-
-== Cavats ==
-
-This particular upgrade is more complicated than we would have
-preferred, due to the interaction of two unrelated factors:
-
-1. As the name (obscurely) implies, the main feature in the ksng
-   branch is a completely new HSM keystore implementation, which makes
-   better use of the Alpha's keystore flash, allows a much larger
-   number of keys, removes the need for an SQL database on the host,
-   gets your laundry 25% brighter, and leaves your breath alone.
-
-   We did not attempt to provide any sort of backwards compatability
-   to the old minimalistic keystore implementation, so this upgrade
-   process will wipe your keystore.  Sorry.  More importantly (from
-   the limited viewpoint of the upgrade process), it will change how
-   the HSM stores its PINs, which complicates the upgrade process.
-
-2. The "Device Field Upgrade" (DFU) capability in the Alpha's firmware
-   was a last-minute addition before the Berlin workshop in July 2016,
-   and, as last minute additions often do, it turned out to be buggy.
-   There are three distinct pieces of software involved in the upgrade
-   process, and they were all slightly buggy, in different ways.
-   Because of this, one must perform the upgrade steps in a particular
-   order to avoid bricking the HSM.  The upgrade includes fixes for
-   all the (known) bugs in the DFU process, so we hope that this will
-   be a one-time annoyance (famous last words).
-
-If something goes horribly wrong and you do somehow manage to brick
-your Alpha, don't give up, recovery is still possible, it just
-requires an ST-LINK debugger and cable (more on this below).
-
-== Overview ==
-
-Because of the tricky nature of this particular upgrade, you must
-perform these steps, in the specified order:
-
-* Install the new host software package using APT or Homebrew.
-* Wipe the HSM keystore to reset PINs back to the "factory" state.
-* Upgrade the main HSM firmware.
-* Upgrade the HSM bootloader.
-* Log in to upgraded HSM to set PINs, etc.
-
-**Upgrading the bootloader before the main firmware will brick your
-Alpha.**  So don't do that.
-
-All of the operations here use the Alpha's "management" (MGMT) port,
-so that cable must be connected to your Linux or OSX host machine.
-
-This upgrade procedure was tested on Debian Jessie, with an Alpha
-whose firmware had been rolled back to the version from the Berlin
-workshop (APT/Homebrew package version 2.0.1468584175, commit
-cd445b69b2caa7205f4e1c368aa2c6bf8c2d7692 in repository
-https://git.cryptech.is/releng/alpha.git).
-
-== Install cryptech-alpha-ksng package using apt-get or Homebrew ==
-
-Binaries for the "ksng" branch are available as a separate set of
-"cryptech-alpha-ksng" packages, which replace the "cryptech-alpha"
-packages for the master branch.  This seemed the simplest way of
-letting people experiment with the new code while falling back to the
-old if necessary.  The "cryptech-alpha-ksng" packages are declared to
-conflict with the "cryptech-alpha" packages, because they install
-programs by the same name in the same places and you need the version
-of the host software which goes with the HSM firmware your running.
-
-APT handles package conflicts differently from the way that Homebrew
-does.  If you have "cryptech-alpha" installed and try to install
-"cryptech-alpha-ksng", APT assumes you meant what you said and will
-just replace the old package with the new one.  Homebrew, on the other
-hand, reports the conflict and refuses to proceed until you sort it out.
-
-The following assumes that you already had the Cryptech APT repository
-or Homebrew tap configured; if not, see  [[wiki:BinaryPackages]].
-
-=== Installing cryptech-alpha-ksng package using apt-get on Debian or Ubuntu Linux ===
-
-{{{
-$ sudo apt-get update
-$ sudo apt-get install cryptech-alpha-ksng
-}}}
-
-=== Installing cryptech-alpha-ksng package using Homebrew on OSX ===
-
-{{{
-$ brew update
-$ brew uninstall cryptech-alpha
-$ brew install cryptech-alpha-ksng
-}}}
-
-== Set usual CRYPTECH_* environment variables ==
-
-The upgrade process uses the `CRYPTECH_CTY_CLIENT_SERIAL_DEVICE`
-environment variable.  The easiest way to set it is by using the
-`cryptech_probe` script, just as you would for other usage of the
-Alpha.
-
-{{{
-$ eval `cryptech_probe -v`
-}}}
-
-== Clear the keystore flash ==
-
-Sorry about this.  Yes, we know we need backup and restore, we'll get
-there.  But for this upgrade, it's safest to wipe the keystore.
-
-{{{
-$ cryptech_miniterm
-
-Username: wheel
-Password: <your-wheel-pin-goes-here>
-
-cryptech> keystore erase YesIAmSure
-
-^]
-}}}
-
-== Upgrade the main HSM firmware ==
-
-{{{
-$ cryptech_upload --firmware --user wheel
-PIN: YouReallyNeedToChangeThisPINRightNowWeAreNotKidding
-}}}
-
-== Upgrade the bootloader ==
-
-{{{
-$ cryptech_upload --bootloader --user wheel --simon-says-whack-my-bootloader
-PIN: YouReallyNeedToChangeThisPINRightNowWeAreNotKidding
-}}}
-
-== Log in and set PINs, masterkey, etcetera ==
-
-{{{
-$ cryptech_miniterm
-
-Username: wheel
-PIN: YouReallyNeedToChangeThisPINRightNowWeAreNotKidding
-
-cryptech> keystore set pin wheel fnord
-cryptech> keystore set pin so    fnord
-cryptech> keystore set pin user  fnord
-cryptech> masterkey set
-
-^]
-}}}
-
-== What to do if you manage to brick your Alpha ==
-
-If the above procedure somehow goes horribly wrong and bricks your
-alpha, you can still recover, but you'll need an ST-LINK programmer.
-There's some discussion of this at [[wiki:GitRepositories/sw/stm32]].
-
-Possible sources for the ST-LINK programmer and a suitable cable:
-
-* http://www.mouser.com/search/ProductDetail.aspx?R=0virtualkey0virtualkeyNUCLEO-F411RE
-* https://www.sparkfun.com/products/10376
-
-These are relatively cheap, you'll probably pay as much for the
-postage as for the parts themselves.  If you have a better source, go
-for it.
-
-The programmer is the important part, you can use any sort of cabling
-you like so long as it connects the right pins of the programmer to
-the corresponding pins on the Alpha; the SparkFun cable just happens
-to be a tidy package which matches the relevant SWD headers.
-
-We'll include a more detailed description of the recovery process here
-if anybody needs it, but the short version is:
-
-* Install OpenOCD on your host machine.
-* Open up the Alpha's case, take the board out.
-* Connect the programmer and power the board back up.
-* Use the `flash-target` script from the `sw/stm32` repository to
-  stuff the `hsm.elf` and `bootloader.elf` files from the binary
-  firmware tarball into the HSM.
-* Power down, disconnect the programmer, put the Alpha back in its
-  case, done.
-\ No newline at end of file