Joomla 3.2 Template by webtemplatesbox

User Rating: 0 / 5

Star InactiveStar InactiveStar InactiveStar InactiveStar Inactive
 

After reading a lot of post on how to enable the SD cards on Android i have decided to write a small tutorial on how to enable the use of both SD (micro and full) cards and also of SATA on Android 4.2 for A20-OLinuXino-MICRO-4GB.

This is valid only if Android will be installed on nand - storage_type = 0 in sys_config.fex

All paths are copied from my setup, so you need to look in the folders according to your setup.

The steps are the following:

1. By default the microSD detection is set to pooling in /home/gvi/android/olimex-a20/lichee/tools/pack/chips/sun7i/configs/android/olinuxino-a20/sys_config.fex

[mmc0_para]

sdc_used = 1

sdc_detmode = 3

sdc_buswidth = 4

sdc_clk = port:PF02<2><1><2><default>

sdc_cmd = port:PF03<2><1><2><default>

sdc_d0 = port:PF01<2><1><2><default>

sdc_d1 = port:PF00<2><1><2><default>

sdc_d2 = port:PF05<2><1><2><default>

sdc_d3 = port:PF04<2><1><2><default>

sdc_det = port:PH01<0><1><default><default>

sdc_use_wp = 0

sdc_wp =

sdc_isio = 0

sdc_regulator = "none"

so if you want the microSD to be auto detected change sdc_detmode = 1

2. The full SD card is disable by default, so we need to enable it

[mmc3_para]

sdc_used = 1

sdc_detmode = 1

sdc_buswidth = 4

sdc_cmd = port:PI04<2><1><2><default>

sdc_clk = port:PI05<2><1><2><default>

sdc_d0 = port:PI06<2><1><2><default>

sdc_d1 = port:PI07<2><1><2><default>

sdc_d2 = port:PI08<2><1><2><default>

sdc_d3 = port:PI09<2><1><2><default>

sdc_det = port:PH11<0><1><default><default>

sdc_use_wp = 0

sdc_wp =

sdc_isio = 1

sdc_regulator = "none"

3. Enable SATA - since we are in the fex file check also if the SATA is enable

[sata_para]

sata_used = 1

sata_power_en = port:PB08<1><default><default><0>

4.  Add SATA drivers

Go in folder /home/gvi/android/olimex-a20/lichee/linux-3.4 and press CTRL+H and you will see .config file. 

We need to add SATA drivers to kernel and below is my configuration

# SCSI Transports

#

# CONFIG_SCSI_SPI_ATTRS is not set

# CONFIG_SCSI_FC_ATTRS is not set

# CONFIG_SCSI_ISCSI_ATTRS is not set

# CONFIG_SCSI_SAS_ATTRS is not set

# CONFIG_SCSI_SAS_LIBSAS is not set

# CONFIG_SCSI_SRP_ATTRS is not set

CONFIG_SCSI_LOWLEVEL=y

# CONFIG_ISCSI_TCP is not set

# CONFIG_ISCSI_BOOT_SYSFS is not set

# CONFIG_LIBFC is not set

# CONFIG_LIBFCOE is not set

# CONFIG_SCSI_DEBUG is not set

# CONFIG_SCSI_DH is not set

# CONFIG_SCSI_OSD_INITIATOR is not set

CONFIG_ATA=y

# CONFIG_ATA_NONSTANDARD is not set

CONFIG_ATA_VERBOSE_ERROR=y

CONFIG_SATA_PMP=y

#

# Controllers with non-SFF native interface

#

CONFIG_SATA_AHCI_PLATFORM=y

CONFIG_SW_SATA_AHCI_PLATFORM=y

CONFIG_ATA_SFF=y

#

# SFF controllers with custom DMA interface

#

CONFIG_ATA_BMDMA=y

#

# SATA SFF controllers with BMDMA

#

# CONFIG_SATA_MV is not set

#

# PATA SFF controllers with BMDMA

#

#

# PIO-only SFF controllers

#

#

# Generic fallback / legacy drivers

#

CONFIG_MD=y

You can also get the same result by using make ARCH=arm menuconfig in a terminal window when you are in the folder.

cd /home/gvi/android/olimex-a20/lichee/linux-3.4

make ARCH=arm menuconfig

5. After you have added the drivers you need to build the kernel

In the terminal window type cd ../ and you end up in /home/gvi/android/olimex-a20/lichee

Now type ./build.sh -psun7i_android and wait for the build to finish

6. Edit strings.xml  - this is how my strings are now

file location - /home/gvi/android/olimex-a20/android4.2/frameworks/base/core/res/res/values/strings.xml

<!-- Storage description for internal storage. [CHAR LIMIT=NONE] -->

<string name="storage_internal">Internal storage</string>

<!-- Storage description for the SD card. [CHAR LIMIT=NONE] -->

<string name="storage_sd_card">uSD card</string>

<!-- Storage description for the ful SD card. [CHAR LIMIT=NONE] -->

<string name="storage_normalcard">SD card</string>

<!-- Storage description for USB storage. [CHAR LIMIT=NONE] -->

<string name="storage_usb">USB storage</string>

<!-- Storage description for the SATA HDD. [CHAR LIMIT=NONE] -->

<string name="storage_sata">SATA HDD</string>

7. Change storage_list.xml file 

file location - /home/gvi/android/olimex-a20/android4.2/device/softwinner/olinuxino-a20/overlay/frameworks/base/core/res/res/xml

<StorageList xmlns:android="http://schemas.android.com/apk/res/android">

    <storage android:mountPoint="/mnt/sdcard"

             android:storageDescription="@string/storage_internal"

             android:primary="true"

             android:removable="false"

             android:emulated="false"  

             android:mtpReserve="100" 

             android:allowMassStorage="true"

             android:maxFileSize="0"/>

<storage android:mountPoint="/mnt/microsd"

             android:storageDescription="@string/storage_sd_card"

             android:primary="false"

             android:removable="true"

             android:emulated="false"  

             android:mtpReserve="0" 

             android:allowMassStorage="true"

             android:maxFileSize="0"/>

<storage android:mountPoint="/mnt/fullsd"

             android:storageDescription="@string/storage_normalcard"

             android:primary="false"

             android:removable="true"

             android:emulated="false"  

             android:mtpReserve="0" 

             android:allowMassStorage="true"

             android:maxFileSize="0"/>

    <storage android:mountPoint="/mnt/sata" 

             android:storageDescription="@string/storage_sata" 

             android:primary="false" 

             android:removable="true" 

             android:emulated="false" 

             android:mtpReserve="0" 

             android:maxFileSize="0" /> 

<storage android:mountPoint="/mnt/usbhost1"

             android:storageDescription="@string/storage_usb"

             android:primary="false"

             android:removable="true"

             android:emulated="false"  

             android:mtpReserve="0" 

             android:maxFileSize="0"/>

 

</StorageList>

8. Change init.sun7i.rc

file location - /home/gvi/android/olimex-a20/android4.2/device/softwinner/olinuxino-a20

on early-init

    export EXTERNAL_STORAGE /mnt/sdcard

    mkdir /mnt/sdcard 0000 system system

# for backwards compatibility

    symlink /mnt/sdcard /sdcard

 

    mkdir /mnt/microsd 0000 system system

    mkdir /mnt/fullsd 0000 system system

    mkdir /mnt/sata 0000 system system

    mkdir /mnt/usbhost1 0000 system system

#    mkdir /mnt/usbhost2 0000 system system

#    mkdir /mnt/extsd1 0000 system system

 

    mount debugfs debugfs /sys/kernel/debug

 

    mkdir /databk 0700 root  system

9. Change vold.fstab

file location - /home/gvi/android/olimex-a20/android4.2/device/softwinner/olinuxino-a20

dev_mount sdcard /mnt/sdcard auto /devices/virtual/block/nandk

dev_mount microsd /mnt/microsd auto /devices/platform/sunxi-mmc.0/mmc_host

dev_mount fullsd /mnt/fullsd auto /devices/platform/sunxi-mmc.3/mmc_host

dev_mount       sata    /mnt/sata       auto    /devices/platform/sw_ahci.0

 

dev_mount usbhost1 /mnt/usbhost1 auto /devices/platform/sw-ehci.1 /devices/platform/sw_hcd_host0 /devices/platform/sw-ohci.1 /devices/platform/sw-ehci.2

10. Compile Android

cd /home/gvi/android/olimex-a20/android4.2

source build/envsetup.sh

lunch

extract-bsp

make -j4

 

pack

11. Burn the image

 

and...voila

Internal storage part 1

 A20-OLinuXino-MICRO-4GB Internal storage

Internal storage part 2

A20-OLinuXino-MICRO-4GB Internal storage 1

Micro SD card

A20-OLinuXino-MICRO-4GB Micro SD Card mount

Full SD card

A20-OLinuXino-MICRO-4GB Full SD Card mount

SATA 32Gb SSD 

A20-OLinuXino-MICRO-4GB SATA SSD mount

For hardware pictures look in Android Remote Control for Digital camera

 

Download the image android_olinuxino-a20.img

hostgator

Who's Online

We have 36 guests and no members online

Site Search

Wednesday the 22nd. Author: Ion GROZEA.