Difference between revisions of "Memtest86"

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(Memtest86+ requires an i386 libc)
 
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The file '''memtest''' is your final payload which you can use with coreboot, either on real hardware or in a [[QEMU]] image.
 
The file '''memtest''' is your final payload which you can use with coreboot, either on real hardware or in a [[QEMU]] image.
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=== Memtest86+ ===
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Prerequisite: on non-i386 hosts be sure to have the i386 libc installed (e.g. libc6-dev-i386).
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$ '''wget http://www.memtest.org/download/4.20/memtest86+-4.20.tar.gz'''
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$ '''tar xfvz memtest86+-4.20.tar.gz'''
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$ '''cd memtest86+-4.20'''
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(Optional: edit '''config.h''' and set '''#define SERIAL_CONSOLE_DEFAULT 1''' for serial support)
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$ '''make'''
  
 
=== coreboot ===
 
=== coreboot ===

Latest revision as of 20:55, 9 October 2012

The Memtest86 payload.

Memtest86 is a program which checks your RAM modules.

It can be run from within GRUB, but also as a coreboot payload (i.e. included in your ROM chip).

Building

Memtest86

$ mkdir foo
$ cd foo
$ wget http://www.memtest86.com/memtest86-3.5.tar.gz
$ tar xfvz memtest86-3.5.tar.gz
$ cd memtest86-3.5

(Optional: edit config.h and set #define SERIAL_CONSOLE_DEFAULT 1 for serial support)

$ make

The file memtest is your final payload which you can use with coreboot, either on real hardware or in a QEMU image.

Memtest86+

Prerequisite: on non-i386 hosts be sure to have the i386 libc installed (e.g. libc6-dev-i386).

$ wget http://www.memtest.org/download/4.20/memtest86+-4.20.tar.gz
$ tar xfvz memtest86+-4.20.tar.gz
$ cd memtest86+-4.20

(Optional: edit config.h and set #define SERIAL_CONSOLE_DEFAULT 1 for serial support)

$ make

coreboot

Finally, you have to build coreboot with Memtest86 as payload:

$ cd ..
$ svn co svn://coreboot.org/coreboot/trunk coreboot
$ cp memtest86-3.5/memtest coreboot/payload.elf
$ cd coreboot
$ make menuconfig

Now enter the Payload menu and select Payload type and then An ELF executable payload file. Then, exit the menu, save your settings, and build coreboot:

$ make

The file build/coreboot.rom is your final coreboot image, which also contains the payload.

Running Memtest86 in QEMU

For running the coreboot+Memtest86 image in QEMU, you need a patched version of vgabios-cirrus.bin in your build directory first:

$ cd build
$ wget http://www.coreboot.org/images/0/0d/Vgabios-cirrus.zip
$ unzip Vgabios-cirrus.zip
$ cd ..

You can now run coreboot and Memtest86 in QEMU:

qemu -L build -hda /dev/zero -serial stdio

Ready-made QEMU image

Please follow these instructions if you want to try out coreboot and Memtest86 in QEMU.

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