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Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/mainboard/index.md | 1 | ||||
| -rw-r--r-- | Documentation/mainboard/lenovo/t431s.md | 42 | ||||
| -rw-r--r-- | Documentation/mainboard/lenovo/t431s_bc_removed.jpg | bin | 0 -> 84127 bytes | |||
| -rw-r--r-- | Documentation/mainboard/lenovo/t431s_flash_chip.jpg | bin | 0 -> 62186 bytes | |||
| -rw-r--r-- | Documentation/mainboard/lenovo/t431s_programming.jpg | bin | 0 -> 68522 bytes |
5 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/mainboard/index.md b/Documentation/mainboard/index.md index 128f0c1d3e..356f203711 100644 --- a/Documentation/mainboard/index.md +++ b/Documentation/mainboard/index.md @@ -60,6 +60,7 @@ The boards in this section are not real mainboards, but emulators. - [T530](lenovo/w530.md) - [W530](lenovo/w530.md) - [T430 / T530 / X230 / W530 common](lenovo/xx30_series.md) +- [T431s](lenovo/t431s.md) ## SiFive diff --git a/Documentation/mainboard/lenovo/t431s.md b/Documentation/mainboard/lenovo/t431s.md new file mode 100644 index 0000000000..146e1c12a3 --- /dev/null +++ b/Documentation/mainboard/lenovo/t431s.md @@ -0,0 +1,42 @@ +# Lenovo T431s + +## Disassembly Instructions + +You must remove the following parts before flipping the mainboard +off the main frame: + + + +* Base cover +* Hard disk drive +* Battery pack +* Keyboard + +Its [Hardware Maintenance Manual](https://thinkpads.com/support/hmm/hmm_pdf/t431s_hmm_en_0c10894_02.pdf) could be used as a guidance of disassembly. + + + +The WSON-8 flash chip (surrounded with red circle in the photo above) +sits on the opposite side of the mainboard, under a piece of insulating +tape. If solders between the chip and soldering pads fortunately +overflows beside the chip as tiny tin balls attached to soldering pads, +it will be possible to use a pomona 5250 clip to hold the chip, with +its metal tips just attached to tin balls, thus connecting the chip to +the programmer. + + + +```eval_rst +:doc:`../../flash_tutorial/ext_power` +``` + +Currently, detecting the model of soldered RAM at runtime and loading +the corresponding SPD datum from CBFS is not implemented yet. You may +have to dump the SPD data when running the vendor firmware with +inteltool, and replace the content of the SPD hex with what is dumped. + +(the mechanism may be similar to that on x1_carbon_gen1 and s230u, but +I do not know how to find gpio ports for that, and SPD data stored in +vendor firmware.) + +[T420 / T520 / X220 / T420s / W520 common]: xx20_series.md diff --git a/Documentation/mainboard/lenovo/t431s_bc_removed.jpg b/Documentation/mainboard/lenovo/t431s_bc_removed.jpg Binary files differnew file mode 100644 index 0000000000..4f8ddd6bf6 --- /dev/null +++ b/Documentation/mainboard/lenovo/t431s_bc_removed.jpg diff --git a/Documentation/mainboard/lenovo/t431s_flash_chip.jpg b/Documentation/mainboard/lenovo/t431s_flash_chip.jpg Binary files differnew file mode 100644 index 0000000000..48c861e8b1 --- /dev/null +++ b/Documentation/mainboard/lenovo/t431s_flash_chip.jpg diff --git a/Documentation/mainboard/lenovo/t431s_programming.jpg b/Documentation/mainboard/lenovo/t431s_programming.jpg Binary files differnew file mode 100644 index 0000000000..c49562a9b7 --- /dev/null +++ b/Documentation/mainboard/lenovo/t431s_programming.jpg |
