libreboot
/
lbwww
1
0
Fork 0
Code Packages Projects Releases Activity

remove bbb-specific info on external flash guides 

the removed info is a relic, from before all information was
centralised in docs/install/spi.md

remove it, because it is extremely confusing for new readers
hslick-master
Leah Rowe 2023-03-03 05:44:56 +00:00
parent 77badd90c4
commit 87993b88a8
5 changed files with 10 additions and 149 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
site/docs/hardware/kgpe-d16.md
View File

@ -22,7 +22,7 @@ recommend avoiding Kingston modules.*
Flashing instructions can be found at Flashing instructions can be found at
[../install/\#flashrom](../install/#flashrom) - note that external [../install/\#flashrom](../install/#flashrom) - note that external
flashing is required (e.g. BBB), if the proprietary (ASUS) firmware is flashing is required, if the proprietary (ASUS) firmware is
currently installed. If you already have libreboot, by default it is currently installed. If you already have libreboot, by default it is
possible to re-flash using software running in GNU+Linux on the possible to re-flash using software running in GNU+Linux on the
KGPE-D16, without using external hardware. KGPE-D16, without using external hardware.

4
site/docs/install/spi.md
View File

@ -20,7 +20,9 @@ libreboot currently documents how to use these SPI programmers:
* BeagleBone Black (BBB) * BeagleBone Black (BBB)
Many other SPI programmers exist. More of them will be documented on this page, Many other SPI programmers exist. More of them will be documented on this page,
at a date in the future. at a date in the future. You can otherwise figure it out on your own; certain
parts of this page are still useful, even if you're using a programmer that
Libreboot does not yet document.
Most systems in libreboot have to be re-flashed externally, using instructions Most systems in libreboot have to be re-flashed externally, using instructions
on this and similar guides, the first time you flash. However, on all currently on this and similar guides, the first time you flash. However, on all currently

125
site/docs/install/t500_external.md
View File

@ -1,5 +1,5 @@
--- ---
title: Flashing the T500 with a BeagleBone Black title: ThinkPad T500 external flashing
x-toc-enable: true x-toc-enable: true
... ...
@ -75,44 +75,11 @@ MAC address {#macaddress}
Refer to [mac\_address.md](../hardware/mac_address.md). Refer to [mac\_address.md](../hardware/mac_address.md).
Initial BBB configuration Clip wiring
========================= ===========
Refer to [spi.md](spi.md) as a guide for external re-flashing. Refer to [spi.md](spi.md) as a guide for external re-flashing.
The following shows how to connect clip to the BBB (on the P9 header),
for SOIC-16 (clip: Pomona 5252):
```
POMONA 5252 (correlate with the BBB guide)
=== ethernet jack and VGA port ====
NC - - 21
1 - - 17
NC - - NC
NC - - NC
NC - - NC
NC - - NC
18 - - 3.3V (PSU)
22 - - NC - this is pin 1 on the flash chip
=== SATA port ===
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):
```
POMONA 5250 (correlate with the BBB guide)
=== RAM slots ====
18 - - 1
22 - - NC
NC - - 21
3.3V (PSU) - - 17 - this is pin 1 on the flash chip
=== slot where the AC jack is connected ===
```
This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.
The procedure The procedure
------------- -------------
@ -214,91 +181,7 @@ Connect your programmer, then connect GND and 3.3V\
![](https://av.libreboot.org/t400/0067.jpg) ![](https://av.libreboot.org/t400/0069.jpg) ![](https://av.libreboot.org/t400/0067.jpg) ![](https://av.libreboot.org/t400/0069.jpg)
![](https://av.libreboot.org/t400/0070.jpg) ![](https://av.libreboot.org/t400/0071.jpg) ![](https://av.libreboot.org/t400/0070.jpg) ![](https://av.libreboot.org/t400/0071.jpg)
A dedicated 3.3V PSU was used to create this guide, but at ATX PSU is Now flash Libreboot.
also fine:\
![](https://av.libreboot.org/t400/0072.jpg)
Of course, make sure to turn on your PSU:\
![](https://av.libreboot.org/x200/disassembly/0013.jpg)
Now, you should be ready to install libreboot.
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:
./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)
flashrom is free software, get the source code at http://www.flashrom.org
Calibrating delay loop... OK.
Found Macronix flash chip "MX25L6405(D)" (8192 kB, SPI) on linux_spi.
Found Macronix flash chip "MX25L6406E/MX25L6436E" (8192 kB, SPI) on linux_spi.
Found Macronix flash chip "MX25L6445E/MX25L6473E" (8192 kB, SPI) on linux_spi.
Multiple flash chip definitions match the detected chip(s): "MX25L6405(D)", "MX25L6406E/MX25L6436E", "MX25L6445E/MX25L6473E"
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
```
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
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
behaviour in the original firmware that could be replicated in coreboot
and libreboot.
While there is a default MAC address inside the gbe region of flash image,
it is not one you want to use. Make sure to change the MAC address to the one
that is correct for your system, for **later internal flash**,
but always remember to **flash unmodfied txtmode image first** as it is known
to work and only this variant provides memtest. You can follow instructions
at [ich9utils.md#ich9gen](ich9utils.md#ich9gen)
to change the MAC address inside the libreboot image.
Now flash it:
./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -w path/to/libreboot/rom/image.rom -V
![](https://av.libreboot.org/x200/disassembly/0015.jpg)
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
installation.
Example output from running the command (see above):
```
flashrom v0.9.7-r1854 on Linux 3.8.13-bone47 (armv7l)
flashrom is free software, get the source code at http://www.flashrom.org
Calibrating delay loop... OK.
Found Macronix flash chip "MX25L6405(D)" (8192 kB, SPI) on linux_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... FAILED at 0x00001000! Expected=0xff, Found=0x00, failed byte count from 0x00000000-0x0000ffff: 0xd716
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase function.
Erase/write done.
Verifying flash... VERIFIED.
```
Thermal paste (IMPORTANT) Thermal paste (IMPORTANT)
========================= =========================

19
site/docs/install/x60_unbrick.md
View File

@ -139,23 +139,8 @@ This will provide adequate 3.3v DC at correct current levels. The SPI flash on a
X60 shares a common 3.3V rail with many other components on the mainboard, X60 shares a common 3.3V rail with many other components on the mainboard,
which all draw a lot of current, more than your programmer can provide. which all draw a lot of current, more than your programmer can provide.
Example RPi command: When you're finished flashing, remove the programmer and put it away somewhere.
Put back the tape and press firmly over it:\
sudo ./flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=4096 -w libreboot.rom -V
If flashrom complains about multiple flash chips detected, just pass the `-c`
option as it suggests, and pick any of the chips it lists. `spispeed=4096` or
lower (e.g. `spispeed=512`) is recommended on this board. The flashing becomes
unstable, on this machine, when you use higher speeds.
Reverse the steps to re-assemble your system, after you've flashed the chip.
It should be `Verifying flash... VERIFIED` at the end. If flashrom
complains about multiple flash chip definitions detected, then choose
one of them following the instructions in the output.
Remove the programmer and put it away somewhere. Put back the tape and
press firmly over it:\
![](https://av.libreboot.org/x60_unbrick/0026.jpg) ![](https://av.libreboot.org/x60_unbrick/0026.jpg)
Your empty chassis:\ Your empty chassis:\

9
site/docs/install/x60tablet_unbrick.md
View File

@ -119,13 +119,4 @@ This will provide adequate 3.3v DC at correct current levels. The SPI flash on a
X60 Tablet shares a common 3.3V rail with many other components on the mainboard, X60 Tablet shares a common 3.3V rail with many other components on the mainboard,
which all draw a lot of current, more than most flashers can provide. which all draw a lot of current, more than most flashers can provide.
Example command:
sudo ./flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=4096 -w libreboot.rom -V
If flashrom complains about multiple flash chips detected, just pass the `-c`
option as it suggests, and pick any of the chips it lists. `spispeed=4096` or
lower (e.g. `spispeed=512`) is recommended on this board. The flashing becomes
unstable, on this machine, when you use higher speeds.
Reverse the steps to re-assemble your system, after you've flashed the chip. Reverse the steps to re-assemble your system, after you've flashed the chip.