glassrose / skiboot Goto Github PK
View Code? Open in Web Editor NEWThis project forked from open-power/skiboot
OPAL boot and runtime firmware for POWER
License: Apache License 2.0
This project forked from open-power/skiboot
OPAL boot and runtime firmware for POWER
License: Apache License 2.0
skiboot ------- Firmware for OpenPower systems. Source: https://github.com/open-power/skiboot Mailing list: [email protected] Info/subscribe: https://lists.ozlabs.org/listinfo/skiboot Archives: https://lists.ozlabs.org/pipermail/skiboot/ Patchwork: http://patchwork.ozlabs.org/project/skiboot/list/ Overview -------- OPAL firmware (OpenPower Abstraction Layer) comes in several parts. A simplified flow of what happens when the power button is pressed is: 1) The baseboard management controller (BMC) powers the system on. 2) The BMC selects the master chip and releases the self-boot engines (SBEs) on the POWER8 chips, master last. 3) The BMC relinquishes control of the flexible service interface (FSI) SCAN/SCOM engines. 4) The hostboot firmware IPLs the system. It initiates a secondary power-on sequence through a digital power systems sweep (DPSS). 5) The hostboot firmware loads the OPAL image and moves all processors to their execution starting points. Here, the OPAL image is three parts: 1) skiboot (includes OPAL runtime services) 2) skiroot - the bootloader environment a) kernel b) initramfs (containing petitboot bootloader) They may be all part of one payload or three separate images (depending on platform). The bootloader will kexec a host kernel (probably linux). The host OS can make OPAL calls. The OPAL API is documented in doc/opal-api/ (there are missing parts, patches are welcome!) See doc/overview.txt for a more in depth overview of skiboot. Building -------- You can build on a linux host. Modern Debian and Ubuntu are well known to be suitable. Build and testing on x86 is fine. You do not need a POWER host to build and test skiboot. You will need a C compiler for big endian ppc64. If your distro does not provide one, crosstool built compilers work well: https://www.kernel.org/pub/tools/crosstool/ You should then be able to just (where 4=nr cpu cores of your machine) $ make -j4 $ make -j4 check If using crosstool compilers, add /opt/cross/gcc-4.8.0-nolibc/powerpc64-linux/bin/ to your PATH. If using packaged cross compilers on Ubuntu, you may need to set the following environment variable: CROSS=powerpc-linux-gnu- Testing ------- To test in a simulator, install the IBM POWER8 Functional Simulator from: http://www-304.ibm.com/support/customercare/sas/f/pwrfs/home.html Qemu (as of 2.2.0) is not suitable as it does not (yet) implement the HyperVisor mode of the POWER8 processor. See https://www.flamingspork.com/blog/2015/08/28/running-opal-in-qemu-the-powernv-platform/ for instructions on how to use a work-in-progress patchset to qemu that may be suitable for some work. To run a boot-to-bootloader test, you'll need a zImage.papr built using the mambo_defconfig config for op-build. See https://github.com/open-power/op-build/ on howto build. Drop zImage.epapr in the skiboot directory and the skiboot test suite will automatically pick it up. See opal-ci/README for further testing instructions. To test on real hardware, you will need to understand how to flash new skiboot onto your system. This will vary from platform to platform. You may want to start with external/boot-tests/boot_test.sh as it can (provided the correct usernames/passwords) automatically flash a new skiboot onto ASTBMC based OpenPower machines. Hacking ------- All patches should be sent to the mailing list with linux-kernel style 'Signed-Off-By'. The following git commands are your friends: - git commit -s - git format-patch You probably want to read the linux Documentation/SubmittingPatches as much of it applies to skiboot. License ------- See LICENSE
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.