Documentation/../../icelake_rvp: Add RVP coreboot development documentation

Change-Id: If063cbd3436d9ee107945f425a31ba0009039a1d
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/29828
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

Documentation/mainboard/index.md

@@ -23,6 +23,7 @@ The boards in this section are not real mainboards, but emulators.
 ## Intel
 
 - [DG43GT](intel/dg43gt.md)
+- [IceLake RVP](intel/icelake_rvp.md)
 
 ## Foxconn
 

Documentation/mainboard/intel/icelake_rvp.md

@@ -0,0 +1,40 @@
+# Intel Ice Lake RVP (Reference Validation Platform)
+
+This page describes how to run coreboot on the Intel icelake_rvp board.
+
+Ice Lake RVP is based on Intel Ice Lake platform, please refer to below link to get more details
+```eval_rst
+:doc:`../../soc/intel/iceLake_coreboot_development.md`
+```
+
+## Building coreboot
+
+* Follow build instructions mentioned in Ice Lake document
+```eval_rst
+:doc:`../../soc/intel/iceLake_coreboot_development.md`
+```
+
+* The default options for this board should result in a fully working image:
+```bash
+	# echo "CONFIG_VENDOR_INTEL=y" > .config
+	# echo "CONFIG_BOARD_INTEL_ICELAKE_RVPU=y" >> .config
+	# make olddefconfig && make
+```
+
+## Flashing coreboot
+
+```eval_rst
++---------------------+------------+
+| Type                | Value      |
++=====================+============+
+| Socketed flash      | no         |
++---------------------+------------+
+| Vendor              | Winbond    |
++---------------------+------------+
+| Size                | 32 MiB     |
++---------------------+------------+
+| Internal flashing   | yes        |
++---------------------+------------+
+| External flashing   | yes        |
++---------------------+------------+
+```