Documentation: Add W530 / T530

Change-Id: Ib253308737f8c7a497c6ca13eab88220b1ac27ad
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/29685
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

Documentation/mainboard/index.md

@@ -52,6 +52,8 @@ The boards in this section are not real mainboards, but emulators.
 ### Ivy Bridge series
 
 - [T430](lenovo/t430.md)
+- [T530](lenovo/w530.md)
+- [W530](lenovo/w530.md)
 - [T430 / T530 / X230 / W530 common](lenovo/xx30_series.md)
 
 ## SiFive

Documentation/mainboard/lenovo/w530.md

@@ -0,0 +1,27 @@
+# Lenovo W530 / T530
+
+## Flashing instructions
+You have to remove the keyboard and the palm rest to access one of the
+flash ICs. The second flash ICs is behind the case frame, but can be
+flashed by using a simple trick. Connect every pin of the first flash
+IC, but tie /CS to Vcc. Connect /CS of the second flash IC to the
+programmer.
+As all lines except /CS are shared between the flash ICs you can access
+both with an external programmer.
+
+For more details have a look at [T430 / T530 / X230 / T430s / W530 common] and
+```eval_rst
+:doc:`../../flash_tutorial/ext_power`
+```
+
+### After removing the keyboard and palm rest
+![][w530-1]
+
+[w530-1]: w530-1.jpg
+
+### Closeup view of the flash ICs
+![][w530-2]
+
+[w530-2]: w530-2.jpg
+
+[T430 / T530 / X230 / T430s / W530 common]: xx30_series.md