iopsys-econet: Readme.md: Add UBIFS and flash layout

UBIFS and flash layout sections added to Readme.md

Signed-off-by: Bartlomiej Grzeskowiak <bartlomiej.grzeskowiak@iopsys.eu>

iopsys-econet/README.md

@@ -10,7 +10,7 @@ Following features are supported:
 
     + initramfs image
     + precompiled bootloader
-    + fixed flash layout
+    + basic flash layout with one free partition for user data
     + WiFi
     + LAN
     + ssh
@@ -38,6 +38,12 @@ ECNT> setenv bootcmd "flash read 0x100000 0x2000000 0x83800000;flash imgread 204
 ECNT> saveenv  
 ECNT> reset  
 
+root@iopsys:~# ubiformat /dev/mtd2  
+root@iopsys:~# ubiattach -p /dev/mtd2  
+root@iopsys:~# ubimkvol /dev/ubi0 -N data -s 128MiB  
+root@iopsys:~# mkdir /opt  
+root@iopsys:~# mount -t ubifs ubi0:data /opt  
+
 <!---
 #Network configuration
 --
@@ -49,7 +55,7 @@ Networking is configured as follows:
 - The kernel also ships with drivers for the wireless hardware in the device. The wireless interface can be configured either in AP or STA mode.
 -->
 
-Compiling an IOPSYSWRT OS image and flashing it
+Compiling an IOPSYSWRT OS image
 --
 
 To compile an image targeting the en7562, type in these commands:
@@ -68,7 +74,10 @@ make -j[nr_threads]
 This should generate flashable FIT image (tclinux) in `bin/targets/iopsys-econet/en7562`.  
 **Only tclinux image is supported at the moment**
 
-To flash an image from u-boot console, type in these commands:
+Flashing an IOPSYSWRT OS image
+--
+
+To flash an image from **u-boot console**, type in these commands:
 
 cp ./bin/targets/iopsys-econet/en7562/tclinux ~/tftp  
 
@@ -77,15 +86,49 @@ ECNT> flash erase 0x100000 ${filesize}
 ECNT> flash write 0x100000 ${filesize} ${loadaddr}  
 ECNT> reset  
 
-To flash an image from linux console, type in these commands:
+To flash an image from **linux console**, type in these commands:
 
 scp ./bin/targets/iopsys-econet/en7562/tclinux root@192.168.1.1:/root  
 
 root@iopsys:~# flash_erase /dev/mtd1 0 0  
 root@iopsys:~# nandwrite -p /dev/mtd1 ./tclinux  
 
+Flash Layout
+--
+[    4.066555] parsing <1m[bootloader]a,64m[ioplinux]a,-[free]a>  
+[    4.073744] partition 2: name <free>, offset ffffffff, size ffffffff, mask flags 0  
+[    4.081288] partition 1: name <ioplinux>, offset ffffffff, size 4000000, mask flags 0  
+[    4.089096] partition 0: name <bootloader>, offset ffffffff, size 100000, mask flags 0  
+[    4.097000] Creating 4 MTD partitions on "EN7512-SPI_NAND":  
+[    4.102560] 0x000000000000-0x000000100000 : "bootloader"  
+[    4.108663] 0x000000100000-0x000004100000 : "ioplinux"  
+[    4.114635] 0x000004100000-0x00000de80000 : "free"  
+[    4.120520] 0x00000de80000-0x00000e000000 : "art"  
+
+
+root@iopsys:~# cat /proc/mtd  
+dev:    size   erasesize  name  
+mtd0: 00100000 00020000 "bootloader"  
+mtd1: 04000000 00020000 "ioplinux"  
+mtd2: 09d80000 00020000 "free"  
+mtd3: 00180000 00020000 "art"  
+
+
 Accessing the device
 ---
 By default, a shell is available on:
 - SSH: `ssh root@192.168.1.1`, password 10pD3v
-- the [serial port](https://elinux.org/RPi_Serial_Connection)
+
+Working with UBIFS
+---
+Ubi volume preparation:  
+root@iopsys:~# ubiformat /dev/mtd2  
+root@iopsys:~# ubiattach -p /dev/mtd2  
+root@iopsys:~# ubimkvol /dev/ubi0 -N data -s 128MiB  
+root@iopsys:~# mkdir /opt  
+root@iopsys:~# mount -t ubifs ubi0:data /opt  
+
+Accessing ubi volume:  
+root@iopsys:~# mkdir /opt  
+root@iopsys:~# ubiattach -p /dev/mtd2  
+root@iopsys:~# mount -t ubifs ubi0:data /opt  
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