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gerrit.openbmc.org / premsjha / op-build / 798bbcfce1a2ddee802319641409e9c29f20e63f
commit798bbcfce1a2ddee802319641409e9c29f20e63f[log] [tgz]
authorJoel Stanley <joel@jms.id.au>Wed May 08 09:33:12 2019 +0930
committerJoel Stanley <joel@jms.id.au>Wed May 08 10:06:14 2019 +0930
tree35c3bc78586a65ef166305c9a07d836ea826e904
parent1ff6f90c9c971441f82e5e077a6c67ad1e3442bd [diff]
linux: Re-enable STRICT_KERNEL_RWX

A workaround was put in place in future kernels (as of 5.0.10) for the
issue exposed by STRICT_KERNEL_RWX. The workaround changes RADIX to
require HUGETLBFS while the root cause is fixed.

The disabling of STRICT_KERNEL_RWX can be reverted with this alternate
workaround in place.

We need to enables HUGETLBFS so we continue using the radix MMU,
otherwise the configuration will fall back to using hash MMU.

See https://github.com/linuxppc/issues/issues/237.

Fixes: 885ef25a0d68 ("linux: temporarily disable STRICT_KERNEL_RWX")
Fixes: 85cc33affffd ("kernel: Move to Linux v4.14.1-openpower1")
Signed-off-by: Joel Stanley <joel@jms.id.au>
1 file changed
tree: 35c3bc78586a65ef166305c9a07d836ea826e904
  1. ci/
  2. dl/
  3. doc/
  4. openpower/
  5. output/
  6. buildroot
  7. .gitignore
  8. .gitmodules
  9. .travis.yml
  10. CONTRIBUTING.md
  11. LICENSE
  12. NOTICE
  13. op-build
  14. op-build-env
  15. README.md
README.md

OpenPOWER Firmware Build Environment

The OpenPOWER firmware build process uses Buildroot to create a toolchain and build the various components of the PNOR firmware, including Hostboot, Skiboot, OCC, Petitboot etc.

Documentation

https://open-power.github.io/op-build/

See the doc/ directory for documentation source. Contributions are VERY welcome!

Development

Issues, Milestones, pull requests and code hosting is on GitHub: https://github.com/open-power/op-build

See CONTRIBUTING.md for howto contribute code.

Building an image

To build an image for a Palmetto system:

git clone --recursive git@github.com:open-power/op-build.git
cd op-build
./op-build palmetto_defconfig && ./op-build

There are also default configurations for other platforms in openpower/configs/. Current POWER8 platforms include Habanero, Firestone, and Garrison. Current POWER9 platforms include Witherspoon, Boston (p9dsu), Romulus, and Zaius.

Buildroot/op-build supports both native and cross-compilation - it will automatically download and build an appropriate toolchain as part of the build process, so you don't need to worry about setting up a cross-compiler. Cross-compiling from a x86-64 host is officially supported.

The machine your building on will need Python 2.7, GCC 6.2 (or later), and a handful of other packages (see below).

Dependencies for 64-bit Ubuntu/Debian systems

  1. Install Ubuntu (>= 18.04) or Debian (>= 9) 64-bit.

  2. Enable Universe (Ubuntu only):

     sudo apt-get install software-properties-common
 sudo add-apt-repository universe

  3. Install the packages necessary for the build:

     sudo apt-get install cscope ctags libz-dev libexpat-dev \
   python language-pack-en texinfo \
   build-essential g++ git bison flex unzip \
   libssl-dev libxml-simple-perl libxml-sax-perl libxml-parser-perl libxml2-dev libxml2-utils xsltproc \
   wget bc rsync

Dependencies for 64-bit Fedora systems

  1. Install Fedora (>= 25) 64-bit.

  2. Install the packages necessary for the build:

     sudo dnf install gcc-c++ flex bison git ctags cscope expat-devel patch \
   zlib-devel zlib-static texinfo perl-bignum "perl(XML::Simple)" \
   "perl(YAML)" "perl(XML::SAX)" "perl(Fatal)" "perl(Thread::Queue)" \
   "perl(Env)" "perl(XML::LibXML)" "perl(Digest::SHA1)" libxml2-devel \
   which wget unzip tar cpio python bzip2 bc findutils ncurses-devel