BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1784
BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1785

Add detailed instructions about Binary Cache in Readme.md,
Extend options to support Binary Cache in the Kabylake
build bld.bat file, Purley build bld.bat file, build_bios.py

Cc: Liming Gao <liming.gao@intel.com>
Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Steven Shi <steven.shi@intel.com>
Cc: Shifei A Lu <shifei.a.lu@intel.com>
Cc: Xiaohu Zhou <bowen.zhou@intel.com>
Cc: Isaac W Oram <isaac.w.oram@intel.com>
Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Michael Kubacki <michael.a.kubacki@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
---
 Platform/Intel/Readme.md | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Platform/Intel/Readme.md b/Platform/Intel/Readme.md
index 443fb409b3..41ae99e8e6 100644
--- a/Platform/Intel/Readme.md
+++ b/Platform/Intel/Readme.md
@@ -133,6 +133,9 @@ return back to the minimum platform caller.
   | --silent              | silent build enabled                |
   | --performance         | performance build enabled           |
   | --fsp                 | fsp build enabled                   |
+  | --hash                | Enable hash-based caching           |
+  | --binary-destination  | create cache in specified directory |
+  | --binary-source       | Consume cache from directory        |
   |                                                             |
 
 * For more information on build options
@@ -191,14 +194,18 @@ For KabylakeOpenBoardPkg
 2. Type "cd edk2-platforms\Platform\Intel\KabylakeOpenBoardPkg\KabylakeRvp3".
 3. Type "GitEdk2MinKabylake.bat" to setup GIT environment.
 4. Type "prep" and make prebuild finish for debug build, "prep r" for release build.
-5. Type "bld" to build Kaby Lake reference platform UEFI firmware image.
+5. Type "bld" to build Kaby Lake reference platform UEFI firmware image, "bld cache-produce" Generate a cache of binary
+   files in the specified directory, "bld cache-consume" Consume a cache of binary files from the specified directory,
+   BINARY_CACHE_PATH is empty, used "BinCache" as default path.

 For PurleyOpenBoardPkg
 1. Open command window, go to the workspace directory, e.g. c:\Purley.
 2. Type "cd edk2-platforms\Platform\Intel\PurleyOpenBoardPkg\BoardMtOlympus".
 3. Type "GitEdk2MinMtOlympus.bat" to setup GIT environment.
 4. Type "bld" to build Purley Mt Olympus board UEFI firmware image, "bld release" for release build, "bld clean" to
-   remove intermediate files.
+   remove intermediate files. "bld cache-produce" Generate a cache of binary files in the specified directory,
+   "bld cache-consume" Consume a cache of binary files from the specified directory, BINARY_CACHE_PATH is empty,
+   used "BinCache" as default path. 
 
 The validated version of iasl compiler that can build MinPurley is 20180629. Older version may generate ACPI build
 errors.
-- 
2.14.1.windows.1