Coreinfo
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coreinfo is a small informational payload for coreboot. Currently, it can display CPU information, PCI information, coreboot table information, and show an NVRAM dump.
Screenshots
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CPU info
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PCI info
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coreboot table
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NVRAM dump
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RAM dump
Building coreinfo
libpayload
The coreinfo payload uses libpayload, thus you need to get that first and build it:
$ svn co svn://coreboot.org/coreboot/trunk/payloads/libpayload $ cd libpayload $ make menuconfig $ make install
coreinfo
You can then get coreinfo itself and build it:
$ cd .. $ svn co svn://coreboot.org/coreboot/trunk/payloads/coreinfo $ cd coreinfo $ make menuconfig $ make
The file build/coreinfo.elf is your final coreinfo payload which you can use with coreboot (v2 or v3), either on real hardware or in a QEMU image.
coreboot
Finally, you have to build coreboot (v3 in this example) with coreinfo as payload:
$ cd .. $ svn co svn://coreboot.org/repository/coreboot-v3 $ cp coreinfo/build/coreinfo.elf coreboot-v3/payload.elf $ cd coreboot-v3 $ make menuconfig
Now enter the Payload menu and select Payload type and then An ELF executable payload file. Now exit the menu, save your settings, and build coreboot:
$ make
The file build/coreboot.rom (or build/bios.bin) is your final coreboot v3 image, which also contains the coreinfo payload.
Running coreinfo in QEMU
For running coreboot+coreinfo 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 coreinfo in QEMU:
$ qemu -L build -hda /dev/zero -serial stdio
Ready-made coreinfo QEMU image
If you don't want to build libpayload, coreinfo, and coreboot from source, you can also use the ready-made coreinfo QEMU image by following the instructions on that page.
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