lot<\/strong> better (although far from complete).<\/p>\nI’m proud to say that I won’t merge new code that adds\/modifies an OPAL API call or anything in the device tree that doesn’t come with accompanying documentation, and this has meant that although it may not be perfect, we have something that is a decent starting point.<\/p>\n
We’re in the interesting situation of starting with a working system, with mainline <\/strong>Linux kernels now for over a year (maybe even 18 months) being able to be booted by skiboot and run on powernv hardware (the more modern the kernel the better though).<\/p>\nSo…. if anyone loves going through deeply technical documentation… do I have a project you can contribute to!<\/p>\n","protected":false},"excerpt":{"rendered":"
Now that we have an increasing amount of things that run on top of OPAL: Linux hello_world (in skiboot tree) ppc64le_hello (as I wrote about yesterday) FreeBSD and that the OpenPower ecosystem is rapidly growing (especially around people building OpenPower … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[76,570,8,588,615],"tags":[636,637,584],"class_list":["post-3972","post","type-post","status-publish","format-standard","hentry","category-code","category-ibm-work-et-al","category-linux-kernel","category-opal","category-powerpc","tag-opal","tag-powerpc","tag-skiboot"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5a6n8-124","jetpack-related-posts":[{"id":4076,"url":"https:\/\/www.flamingspork.com\/blog\/2016\/07\/12\/using-smatch-static-analysis-on-openpower-opal-firmware\/","url_meta":{"origin":3972,"position":0},"title":"Using Smatch static analysis on OpenPOWER OPAL firmware","author":"Stewart Smith","date":"2016-07-12","format":false,"excerpt":"For Skiboot, I'm always looking at new automated systems to find bugs in the code. A little while ago, I read about the Smatch tool developed by some folks at Oracle (they also wrote about using it on the Linux kernel). I was eager to try it with skiboot to\u2026","rel":"","context":"In "code"","block_context":{"text":"code","link":"https:\/\/www.flamingspork.com\/blog\/category\/code\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3970,"url":"https:\/\/www.flamingspork.com\/blog\/2015\/06\/15\/freebsd-on-openpower\/","url_meta":{"origin":3972,"position":1},"title":"FreeBSD on OpenPower","author":"Stewart Smith","date":"2015-06-15","format":false,"excerpt":"There's been some work on porting FreeBSD over to run natively on top of OPAL, that is, on bare metal OpenPower machines (not just under KVM). This is one of four possible things to run natively on an OPAL system: Linux hello_world (in skiboot tree) ppc64le_hello (as I wrote about\u2026","rel":"","context":"In "code"","block_context":{"text":"code","link":"https:\/\/www.flamingspork.com\/blog\/category\/code\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3775,"url":"https:\/\/www.flamingspork.com\/blog\/2014\/07\/17\/openpower-firmware-up-on-github\/","url_meta":{"origin":3972,"position":2},"title":"OpenPower firmware up on github!","author":"Stewart Smith","date":"2014-07-17","format":false,"excerpt":"With the whole OpenPower thing, a lot of low level firmware is being open sourced, which is really exciting for the platform - the less proprietary code sitting in memory the better in my books. If you go to https:\/\/github.com\/open-power you'll see code for a bunch of the low level\u2026","rel":"","context":"In "code"","block_context":{"text":"code","link":"https:\/\/www.flamingspork.com\/blog\/category\/code\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3965,"url":"https:\/\/www.flamingspork.com\/blog\/2015\/06\/12\/gcov-code-coverage-for-openpower-firmware\/","url_meta":{"origin":3972,"position":3},"title":"gcov code coverage for OpenPower firmware","author":"Stewart Smith","date":"2015-06-12","format":false,"excerpt":"For skiboot (which provides the OPAL boot and runtime firmware for OpenPower machines), I've been pretty interested at getting some automated code coverage data for booting on real hardware (as well as in a simulator). Why? Well, it's useful to see that various test suites are actually testing what you\u2026","rel":"","context":"In "code"","block_context":{"text":"code","link":"https:\/\/www.flamingspork.com\/blog\/category\/code\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3912,"url":"https:\/\/www.flamingspork.com\/blog\/2014\/12\/03\/running-skiboot-opal-on-the-power8-simulator\/","url_meta":{"origin":3972,"position":4},"title":"Running skiboot (OPAL) on the POWER8 Simulator","author":"Stewart Smith","date":"2014-12-03","format":false,"excerpt":"skiboot is open source boot and runtime firmware for OpenPOWER. On real POWER8 hardware, you will also need HostBoot to do this (basically, to make the chip work) but in a functional simulator (such as this one released by IBM) you don't need a bunch of hardware procedures to make\u2026","rel":"","context":"In "code"","block_context":{"text":"code","link":"https:\/\/www.flamingspork.com\/blog\/category\/code\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":4072,"url":"https:\/\/www.flamingspork.com\/blog\/2016\/06\/20\/building-opal-firmware-for-power9\/","url_meta":{"origin":3972,"position":5},"title":"Building OPAL firmware for POWER9","author":"Stewart Smith","date":"2016-06-20","format":false,"excerpt":"Recently, we merged into the op-build project (the build scripts for OpenPOWER Firmware) a defconfig for building OPAL for (certain) POWER9 simulators. I won't bother linking over to articles on the POWER9 chip or schedule (there's search engines for that), but with this commit - if you happen to be\u2026","rel":"","context":"In "IBM"","block_context":{"text":"IBM","link":"https:\/\/www.flamingspork.com\/blog\/category\/work-et-al\/ibm-work-et-al\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/posts\/3972","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/comments?post=3972"}],"version-history":[{"count":2,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/posts\/3972\/revisions"}],"predecessor-version":[{"id":3974,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/posts\/3972\/revisions\/3974"}],"wp:attachment":[{"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/media?parent=3972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/categories?post=3972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/tags?post=3972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}