구차니의 잡동사니 모음

Case 1: Using the Recovery image

1.Download Recovery Image file.

2.Unzip with 7-Zip (Windows) or Linux using “xz -d”

3.Prepare a microSD card and flash the attached image. flashing → refer this link

4.Boot with the microSD without eMMC.

5.Turn on U2/U3 and wait a few seconds and blue LED will blink.

6.Plug your eMMC module into U2/U3

7.Plug micro-USB cable into U2/U3 and connect other side to your PC USB host or ODROID's USB host port.

  (This is a trigger to start the recovery)

8.After recovery process (only a few seconds), the blue LED will turn off automatically.

9.Finish. Install OS on your eMMC with as usual.

Case 2 : Boot from SD card and access the eMMC

You need the USB-UART and serial terminal program like a Putty.

1. Boot the board with a Ubuntu SD Card without eMMC.

2. Enter into the u-boot prompt by Enter key or Space key in 3 seconds.

3. Install the eMMC module on the board.

4. Issue a command to connect the eMMC.

Exynos4412 # movi init 1

5. Copy the boot code from SD to eMMC.

Exynos4412 # run copy_uboot_sd2emmc

6. Remove the SD card and power on with the eMMC. The Blue LED should be on by eMMC boot loader.

[링크 : http://odroid.com/dokuwiki/doku.php?id=en:emmc_recovery_u3]

$ time make -j8 CC=distcc

kernel compilation using single machine :

real 50m55.498s

user 71m4.967s

sys 6m55.030s

kernel compilation using three machines:

real 28m21.146s

user 17m32.862s

sys 4m35.537s 

Edit the Makefile 

Fire up your favourite editor and load /usr/src/linux/Makefile. Find this section:

Code:

# 

# Include the make variables (CC, etc...) 

# 

And change "gcc" in the CC line to 

Code:

CC              = $(CROSS_COMPILE)distcc 

Append this line to the section: 

Code:

DISTCC_HOSTS=slave1 slave2 slave3 ... slaveN  

$ gcc -v

Using built-in specs.

COLLECT_GCC=gcc

COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/4.9/lto-wrapper

Target: arm-linux-gnueabihf

Configured with: ../src/configure -v --with-pkgversion='Raspbian 4.9.2-10' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.9 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-armhf/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-armhf --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-armhf --with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-sjlj-exceptions --with-arch=armv6 --with-fpu=vfp --with-float=hard --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf

Thread model: posix

gcc version 4.9.2 (Raspbian 4.9.2-10) 

~/tools/arm-bcm2708/arm-bcm2708hardfp-linux-gnueabi/bin $ arm-linux-gnueabihf-gcc -v

Using built-in specs.

COLLECT_GCC=arm-linux-gnueabihf-gcc

COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/4.9/lto-wrapper

Target: arm-linux-gnueabihf

Configured with: ../src/configure -v --with-pkgversion='Raspbian 4.9.2-10' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.9 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-armhf/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-armhf --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-armhf --with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-sjlj-exceptions --with-arch=armv6 --with-fpu=vfp --with-float=hard --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf

Thread model: posix

gcc version 4.9.2 (Raspbian 4.9.2-10)

~/tools/arm-bcm2708 $ ll

total 20

drwxr-xr-x 7 pi pi 4096 Sep 26 23:28 arm-bcm2708hardfp-linux-gnueabi

drwxr-xr-x 7 pi pi 4096 Sep 26 23:26 arm-bcm2708-linux-gnueabi

drwxr-xr-x 8 pi pi 4096 Sep 26 23:28 arm-rpi-4.9.3-linux-gnueabihf

drwxr-xr-x 7 pi pi 4096 Sep 26 23:30 gcc-linaro-arm-linux-gnueabihf-raspbian

drwxr-xr-x 7 pi pi 4096 Sep 26 23:29 gcc-linaro-arm-linux-gnueabihf-raspbian-x64