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Diffstat (limited to 'docs/install/t400_external.md')
| -rw-r--r-- | docs/install/t400_external.md | 155 |
1 files changed, 75 insertions, 80 deletions
diff --git a/docs/install/t400_external.md b/docs/install/t400_external.md index ac20a2e5..e8576284 100644 --- a/docs/install/t400_external.md +++ b/docs/install/t400_external.md @@ -1,4 +1,6 @@ -% Flashing the T400 with a BeagleBone Black + +Flashing the T400 with a BeagleBone Black +========================================= Initial flashing instructions for T400. @@ -14,6 +16,9 @@ the screws on page 144 (with title "1130 Keyboard bezel") are swapped and if you follow the HMM you will punch a hole through the bezel in the upper right corner. + + + T400 laptops with libreboot pre-installed {#preinstall} ========================================= @@ -23,6 +28,8 @@ GNU+Linux distribution. Check the [suppliers](../../suppliers) page for more information. + + Serial port {#serial_port} ----------- @@ -30,6 +37,8 @@ EHCI debug might not be needed. It has been reported that the docking station for this laptop has a serial port, so it might be possible to use that instead. + + A note about CPUs ================= @@ -43,6 +52,8 @@ Quad-core CPUs Incompatible. Do not use. + + A note about GPUs ================= @@ -59,17 +70,20 @@ initialization works all the same. CPU paste required ================== -See [#paste](#paste). +See [\#paste](#paste). + + Flash chip size {#flashchips} =============== -Use this to find out: - -# **flashrom -p internal -V** +Use this to find out:\ +\# **flashrom -p internal -V** [Back to top of page.](#pagetop) + + MAC address {#macaddress} =========== @@ -83,6 +97,8 @@ image before flashing it. It will be written in one of these locations:    + + Initial BBB configuration ========================= @@ -121,90 +137,72 @@ for SOIC-8 (clip: Pomona 5250): The procedure ------------- -Remove *all* screws, placing them in the order that you removed them: - +Remove *all* screws, placing them in the order that you removed them:\   -Remove those three screws then remove the rear bezel: - +Remove those three screws then remove the rear bezel:\     -Remove the speakers: - +Remove the speakers:\      -Remove the wifi: - +Remove the wifi:\   -Remove this cable: - +Remove this cable:\      -Unroute those antenna wires: - +Unroute those antenna wires:\      -Remove the LCD assembly: - +Remove the LCD assembly:\         -Disconnect the NVRAM battery: - +Disconnect the NVRAM battery:\  -Disconnect the fan: - +Disconnect the fan:\  -Unscrew these: - +Unscrew these:\     -Unscrew the heatsink, then lift it off: - +Unscrew the heatsink, then lift it off:\   -Disconnect the power jack: - +Disconnect the power jack:\   -Loosen this: - +Loosen this:\  -Remove this: - +Remove this:\      -Unscrew these: - +Unscrew these:\   -Remove this: - +Remove this:\   -Unscrew this: - +Unscrew this:\  Remove the motherboard (the cage is still attached) from the right hand -side, then lift it out: - +side, then lift it out:\    @@ -214,23 +212,19 @@ later):       -Separate the motherboard: - +Separate the motherboard:\   -Connect your programmer, then connect GND and 3.3V - +Connect your programmer, then connect GND and 3.3V\       A dedicated 3.3V PSU was used to create this guide, but at ATX PSU is -also fine: - +also fine:\  -Of course, make sure to turn on your PSU: - +Of course, make sure to turn on your PSU:\  Now, you should be ready to install libreboot. @@ -240,11 +234,10 @@ libreboot\_util. Alternatively, libreboot also distributes flashrom source code which can be built. Log in as root on your BBB, using the instructions in -[bbb\_setup.html#bbb\_access](bbb_setup.html#bbb_access). - -Test that flashrom works: +[bbb\_setup.html\#bbb\_access](bbb_setup.html#bbb_access). - # ./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 +Test that flashrom works:\ +\# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512**\ In this case, the output was: flashrom v0.9.7-r1854 on Linux 3.8.13-bone47 (armv7l) @@ -257,24 +250,18 @@ In this case, the output was: Please specify which chip definition to use with the -c <chipname> option. How to backup factory.rom (change the -c option as neeed, for your flash -chip): - -# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 -r -factory.rom** - -# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 -r -factory1.rom** - -# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 -r -factory2.rom** - +chip):\ +\# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 -r +factory.rom**\ +\# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 -r +factory1.rom**\ +\# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 -r +factory2.rom**\ Note: the **-c** option is not required in libreboot's patched flashrom, because the redundant flash chip definitions in *flashchips.c* -have been removed. - -Now compare the 3 images: - - # sha512sum factory*.rom +have been removed.\ +Now compare the 3 images:\ +\# **sha512sum factory\*.rom**\ If the hashes match, then just copy one of them (the factory.rom) to a safe place (on a drive connected to another system, not the BBB). This is useful for reverse engineering work, if there is a desirable @@ -282,20 +269,19 @@ behaviour in the original firmware that could be replicated in coreboot and libreboot. Follow the instructions at -[../hcl/gm45\_remove\_me.html#ich9gen](../hcl/gm45_remove_me.html#ich9gen) +[../hcl/gm45\_remove\_me.html\#ich9gen](../hcl/gm45_remove_me.html#ich9gen) to change the MAC address inside the libreboot ROM image, before flashing it. Although there is a default MAC address inside the ROM image, this is not what you want. **Make sure to always change the MAC address to one that is correct for your system.** -Now flash it: - -# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 -w +Now flash it:\ +\# **./flashrom -p linux\_spi:dev=/dev/spidev1.0,spispeed=512 -w path/to/libreboot/rom/image.rom -V**  -You might see errors, but if it says **Verifying flash... VERIFIED** at +You might see errors, but if it says **Verifying flash\... VERIFIED** at the end, then it's flashed and should boot. If you see errors, try again (and again, and again); the message **Chip content is identical to the requested image** is also an indication of a successful @@ -316,6 +302,8 @@ Example output from running the command (see above): [Back to top of page.](#pagetop) + + Thermal paste (IMPORTANT) ========================= @@ -333,13 +321,15 @@ NOTE: the photo above is for illustration purposes only, and does not show how to properly apply the thermal paste. Other guides online detail the proper application procedure. + + Wifi ==== The T400 typically comes with an Intel wifi chipset, which does not work without proprietary software. For a list of wifi chipsets that work without proprietary software, see -[../hcl/#recommended\_wifi](../hcl/#recommended_wifi). +[../hcl/\#recommended\_wifi](../hcl/#recommended_wifi). Some T400 laptops might come with an Atheros chipset, but this is 802.11g only. @@ -350,10 +340,11 @@ whitelist of approved chips, and it will refuse to boot if you use an 'unauthorized' wifi card. The following photos show an Atheros AR5B95 being installed, to replace -the Intel chip that this T400 came with: - +the Intel chip that this T400 came with:\   + + WWAN ==== @@ -364,6 +355,8 @@ track your movements. Not to be confused with wifi (wifi is fine). + + Memory ====== @@ -377,10 +370,11 @@ Make sure that the RAM you buy is the 2Rx8 density. be useful for RAM compatibility info (note: coreboot raminit is different, so this page might be BS) -The following photo shows 8GiB (2x4GiB) of RAM installed: - +The following photo shows 8GiB (2x4GiB) of RAM installed:\  + + Boot it! -------- @@ -390,8 +384,9 @@ You should see something like this: Now [install GNU+Linux](../gnulinux/). -Copyright © 2015 Leah Rowe <info@minifree.org> + +Copyright © 2015 Leah Rowe <info@minifree.org>\ Permission is granted to copy, distribute and/or modify this document under the terms of the Creative Commons Attribution-ShareAlike 4.0 International license or any later version published by Creative |