Merge pull request #24 from johnnylinwiwynn/readme-edits

Update README.md for OCP TiogaPass

case_studies/TiogaPass/README.md

@@ -1,6 +1,6 @@
 # OCP TiogaPass Case Study
 
-Points of contact: [Jonathan Zhang](https://github.com/jonzhang-fb), [Andrea Barberio](https://github.com/insomniacslk), [David Hendricks](https://github.com/dhendrix), Adi
+Points of contact: [Jonathan Zhang](https://github.com/jonzhang-fb), [Andrea Barberio](https://github.com/insomniacslk), [David Hendricks](https://github.com/dhendrix), [Adi](https://github.com/agangidi53), [Morgan Jang](https://github.com/morganjangwiwynn), [Johnny Lin](https://github.com/johnnylinwiwynn)
 
 This case study describes information for firmware development community to use [OCP](https://www.opencompute.org/) platform TiogaPass, made by [Wiwynn Corporation](http://www.wiwynn.com/english).
 
@@ -18,7 +18,7 @@ It contains following sections:
 ## Quick Start
 
 * [Order the hardware](http://www.wiwynn.com/english) if you have not done so.
-* Download or build the firmware binary. The binary can be downloaded from **TBD location**. 
+* Download or build the firmware binary. The current solution is to boot embedded Linux kernel and initramfs as UEFI payload. Please contact Wiwynn to get a UEFI binary after ordering.
 * Flash the firmware.
   * Copy the downloaded firmware to OpenBMC.
   * From OpenBMC
@@ -34,11 +34,27 @@ It contains following sections:
 
 ## Details
 ### How to build
-Follow **TBD section** for details on how to get the source code, and how to build.
+Follow [Build Details](#Build-Details) for details on how to get the source code, and how to build.
 
 Boot flow of the current firmware solution is: Power on --> minimized UEFI --> Linuxboot --> target OS.
 
 In near feature, the boot flow will be: power on --> Coreboot --> Linuxboot --> target OS.
+#### Build Details
+* Download the code from [linuxboot github](https://github.com/linuxboot/linuxboot)
+```
+  git clone https://github.com/linuxboot/linuxboot.git
+```
+* Build the kernel bzImage (has embeded initramfs) for linuxboot, please follow the 
+  **TBD guide** for how to build the bzImage.
+* Place the tioga.rom into linuxboot/boards/tioga which is provided from Wiwynn after ordering, and also put your bzImage 
+to the root folder of linuxboot, and then make
+```
+  cp path/to/tioga.rom linuxboot/boards/tioga
+  cp path/to/bzImage linuxboot
+  cd linuxboot
+  BOARD=tioga make 
+```
+* You should see the built image at build/tioga/linuxboot.rom.
 
 ### How to operate
 Follow **TBD section** for details on: