Add/modify README to show how to make and download ROMFS image

build/configs/artik053/README.md

@@ -7,6 +7,7 @@ The ARTIK 053 is a SOC for Wi-Fi™ IoT solutions. The ARTIK 053 has a Wi-Fi sub
 > [Information](#information)  
 > [Environment Set-up](#environment-set-up)  
 > [How to program a binary](#how-to-program-a-binary)  
+> [ROMFS](#romfs)  
 > [Configuration Sets](#configuration-sets)
 
 ## Information
@@ -74,6 +75,43 @@ openocd -f artik053.cfg -c ' \
     flash_write os ../build/output/bin/tinyara_head.bin; exit'
 ```
 
+## ROMFS
+
+Before executing below steps, execute [generic steps](../../../external/contents/README.md), step 1 and step 2.
+
+3. Modify partition configs.  
+    Below steps creates ROMFS partition with size 400KB at next of user partition.  
+    1. Split user partition size from (1400) to (1000, 400) in ARTIK053_FLASH_PART_LIST
+        ```bash
+        Board Selection -> change values at Flash partition size list (in KBytes)
+        ```
+    2. Append "romfs" at next of *smartfs* to ARTIK053_FLASH_PART_TYPE
+        ```bash
+        Board Selection -> append string at Flash partition type list
+        ```
+    3. Append "rom" at next of *user* to ARTIK053_FLASH_PART_NAME
+        ```bash
+        Board Selection -> append string at FLash partition name list
+        ```
+4. Build Tizen RT  
+5. Prepare ROM image
+    ```bash
+    sh $TIZENRT_BASEDIR/../apps/tools/mkromfsimg.sh
+    ```
+6. Modify partition map to *$TIZENRT_BASEDIR/../build/configs/artik053/tools/openocd/partition_map.cfg*
+    ```bash
+    user	{ "USER R/W"		0x04620000	0x000FA000  0 }
+    rom  	{ "ROM FS"  		0x0471A000	0x00064000  0 }
+    ```
+7. Program a ROM image
+    ```bash
+    flash_write rom ../bin/rom.img;    \
+    ```
+8. Mount on device
+    ```bash
+    mount -t romfs /dev/smart4rom9 /rom
+    ```
+
 ## Configuration Sets
 
 will be updated

build/configs/sidk_s5jt200/README.md

@@ -7,6 +7,7 @@ Samsung IoT Development Kit for S5JT200 chipset.
 > [Information](#information)  
 > [Environment Set-up](#environment-set-up)  
 > [How to program a binary](#how-to-program-a-binary)  
+> [ROMFS](#romfs)  
 > [Configuration Sets](#configuration-sets)  
 > [Board Configuration](#board-configuration)
 
@@ -94,6 +95,32 @@ TIZENRT_BASEDIR was set at [[Getting the sources]](../../../README.md#getting-th
 make download ALL
 ```
 
+## ROMFS
+
+Before executing below steps, execute [generic steps](../../../external/contents/README.md), step 1 and step 2.
+
+3. Modify partition configs.  
+    Below steps creates ROMFS partition with size 256KB at the end,  
+    where romfs device is a smart device and romfs filesystem will be mounted on smartdevice "/dev/smart0p15"  
+    1. Split last partition size to (256, 256) in SIDK_S5JT200_FLASH_PART_LIST
+        ```bash
+        Board Selection -> change values at Flash partition size list (in KBytes)
+        ```
+    2. Append "smartfs" at end to SIDK_S5JT200_FLASH_PART_TYPE
+        ```bash
+        Board Selection -> append string at Flash partition type list
+        ```
+    3. Append "romfs" at end to SIDK_S5JT200_FLASH_PART_NAME
+        ```bash
+        Board Selection -> append string at FLash partition name list
+        ```
+4. Enable auto-mount config.
+    ```bash
+    Board Selection -> Automount partitions -> Automount ROM read only partition to y
+    ```
+
+After above two steps, build Tizen RT and program a Tizen RT binary through above [method](#how-to-program-a-binary).
+
 ## Configuration Sets
 
 There are three configuration sets for sidk_s5jt200, including 'hello_with_tash', 'kernel_sample', and 'tc'.

docs/HowToUseROMFS.md

@@ -0,0 +1,19 @@
+# How to use ROMFS
+
+There are two parts to use ROMFS, generic and board specific.
+
+## 1. Generic
+
+This part supports making ROMFS image.  
+Please find it at [README](../external/contents/README.md)
+
+## 2. Board Specific
+
+This part supports making partition for ROMFS and programming a ROMFS image.  
+Please find it at each README.
+
+
+ARTIK053 [[Details]](../build/configs/artik053/README.md#romfs)
+
+SIDK_S5JT200 [[Details]](../build/configs/sidk_s5jt200/README.md#romfs)
+

external/contents/README.md

@@ -0,0 +1,22 @@
+
+# Contents for ROMFS
+
+1. Enable ROMFS config through menuconfig at *os* folder.
+```bash
+cd $TIZENRT_BASEDIR
+make menuconfig
+```
+
+Select menu.
+```bash
+File Systems -> ROMFS to y
+```
+
+2. Put your contents at *external/contents* folder.
+
+After these two steps, board specific steps should be executed.
+
+ARTIK053 [[Details]](../../build/configs/artik053/README.md#romfs)
+
+SIDK_S5JT200 [[Details]](../../build/configs/sidk_s5jt200/README.md#romfs)
+