Architectures/ARM/AArch64/Stage2Notes

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AArch64 Bootstrap Stage2 Notes

Here's what changed from f17 to get aarch64 to bootstrap (using the rootfs built in stage1) in build order as determined by dependencies in the make file fragments. Stage1 details are here.

A copy of the current state of the stage2 rootfs can be retrieved from:

$ git clone http://fedorapeople.org/groups/armv8/rootfs.git

This rootfs can be used directly as an NFS root mount point if you have access to either the ARM FAST model or the ARM Foundation model (see http://www.arm.com/fvp); details for doing so are in Using ARMv8 Bootstrap Root FS via NFS root. With some preparation, you can also turn this set of files into a rootfs disk image that can be used with the ARM Foundation model (see ARMv8 using Fedora17 Bootstrap Image and ARM Foundation Model).

NB: just as with stage1 ( AArch64 Bootstrap Stage1 Notes), the sources used can be found here:

http://fedorapeople.org/groups/armv8/SRPMs

Look in the subdirectories f17/changed (which should have been copied into SRPMlocal in your copy of the bootstrap directory), and in the subdirectory f17/unchanged (which should be copied into SRPMs in your bootstrap directory).

To work with the stage2 rootfs, follow the instructions pointed to above and boot a model and either an NFS root or a disk image. Once you have booted into the rootfs, however, continuing the stage2 build is pretty straightforward:

# cd /stage2
# ./stage2

You will be running in a BusyBox environment at that point, and you do have most basic commands, and basic job control.

cpio

Source: cpio-2.11-6.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Patched use of gnulib to remove deprecated use of gets(). Added patches to cpio.spec.

ncurses

Source: ncurses-5.9-4.20120204.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to ncurses.spec.

m4

Source: m4-1.4.16-3.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Patched use of gnulib to remove deprecated use of gets(). Added patches to m4.spec.

flex

Source: flex-2.5.35-14.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to flex.spec.

bison

Source: bison-2.5-3.fc17.aarch.src.rpm

Patched aarch64 support to config.sub and config.guess. Patched use of gnulib to remove deprecated use of gets(). Added patches to bison.spec.

readline

Source: readline-6.2-4.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to readline.spec.

texinfo

Source: texinfo-4.13a-16.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to texinfo.spec.

gdb

Source: gdb-7.5.0.20120926-25.fc17.aarch64.src.rpm

Started with 7.5 version of the source (from f18), since the upstream patch uses ptrace and as such it did not apply to the 7.4 version; several functions ended up rewritten or replaced so that in some cases the upstream patch was referring to code that did not exist in 7.4.

Further, the upstream patch was incomplete. While it got most parts, it made the assumption that the subdirectories bfd/, opcodes/, and include/ had all been updated to reflect the latest binutils for aarch64; this was not the case for f17. So, merged each of those directories with the binutils files (in the same directories) from stage1 in order to add support for aarch64 everywhere it was needed.

Patched aarch64 support into config.sub and config.guess. Added all of these patches to gdb.spec.

libtool

Source: libtool-2.4.2-3.1.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to libtool.spec.

gdbm

Source: gdbm-1.10-2.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to gdbm.spec.

db4

Source: db4-4.8.30-10.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to db4.spec.

perl

Source: perl-5.14.2-215.fc17.aarch64.src.rpm

Patched the definition of Perl_repeatcpy() in util.c so that the last argument was consistently defined; it had been type IV (which defaulted to 64-bit on aarch64) in the definition, but type I32 (32-bit) in the declaration. Added patch to perl.spec.

curl

Source: curl-7.24.0-5.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to curl.spec.

nspr

Source: nspr-4.9.2-1.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to nspr.spec.

Patched _linux.cfg and _linux.h in pr/include/md to add in the aarch64 architecture; cloned the definitions used from ia64, another LP64 platform. Added patch to nspr.spec.

pcre

Source: pcre-8.21-6.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to pcre.spec.

Changed the recipe.d make snippet so that documentation is not installed. When running make install, the command lines generated (e.g., when installing the HTML files or man pages) are quite long and will sometimes get cut in odd places causing the make to fail, but only for the documentation; everything else has built properly.

gettext

Source: gettext-0.18.1.1-14.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to gettext.spec.

Still FTBFS for now; it looks like an extraneous usage of gets() is the issue.

popt

Source: popt-1.13-10.fc17.aarch64.src.rpm

Patched aarch64 support to config.sub and config.guess. Added patch to popt.spec.

This needs gettext to complete before it compiles. State unknown right now.

chkconfig

This requires gettext and popt to be built first but did not have them as "#requires" in the recipe.d file; added them.