From bb55beef914e7488350ad1d0419d4bc60ad63c99 Mon Sep 17 00:00:00 2001 From: Alex AUVOLAT Date: Fri, 28 Mar 2014 09:10:23 +0100 Subject: Import code for article1, 2, 3, 4 --- sos-code-article2/extra/README | 73 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 sos-code-article2/extra/README (limited to 'sos-code-article2/extra/README') diff --git a/sos-code-article2/extra/README b/sos-code-article2/extra/README new file mode 100644 index 0000000..0272f1f --- /dev/null +++ b/sos-code-article2/extra/README @@ -0,0 +1,73 @@ + +Contents of the extra/ directory +================================ + +Data and configuration files to support generation of sos on non-x86 +and/or grub-less hosts: + - dot.mkvars: file to copy as .mkvars in the root directory to + compile on a non-x86 host, and to generate the grub floppy image on + a grub-less host + - grub.img.gz: compressed image of a Grub floppy (without any + kernel). Used by dot.mkvars. + - mtoolsrc: file needed by .mkvars to compile a the floppy image + +Support of a sos-specific boot sector: + - Makefile: rules to compile sos_bsect.img, the floppy image with the + boot sector and the Sos + - bootsect.S: x86 Sos boot sector (GNU as). Depends on sos_bsect.lds + - sos_bsect.lds: ld script to bind the boot sector with the remaining + of the kernel + +Misc: + - qemu-port-e9.diff: patch over qemu to support the bochs "port 0xe9 hack" + + +What you can do with these files +================================ + + +*** Compile SOS from another architecture: +------------------------------------------ + - compile a cross-compiler for the i586-gnu target. This involves + compiling the binutils and gcc. Here are example configuration + options for them: + binutils (replace sparc-cun-solaris with your arch): + ../binutils-2.13/configure --prefix=/udd/ddecotig/temp_dd/xgcc/host-sparc-solaris7/stow/binutils-2.11 --host=sparc-sun-solaris2.7 i586-gnu + make && make install + gcc (ditto): + CFLAGS="-O2 -Dinhibit_libc" ../gcc-3.2/configure --target=i586-gnu --prefix=/udd/ddecotig/temp_dd/xgcc/host-sparc-solaris7/stow/gcc-3.2 --with-as=/udd/ddecotig/temp_dd/xgcc/host-sparc-solaris7/bin/as --with-ld=/udd/ddecotig/temp_dd/xgcc/host-sparc-solaris7/bin/ld --with-gnu-as --with-gnu-ld --enable-languages=c --disable-shared --disable-multilib --disable-nls --enable-threads=single + make && make install + - compile the mtools + - copy dot.mkvars to the root directory of SOS, as ".mkvars" + - customize the CC/LD/... variables to suit your cross-compiler + installatioon + - now you may run make from the SOS root directory, it should + generate the Grub boot floppy image. The following warning is + normal: + .mkvars:16: attention : écrasement des commandes pour la cible « grub-sos.img » + Makefile:92: attention : anciennes commandes ignorées pour la cible « grub-sos.img » + + +*** To compile SOS from an x86 where grub is not or incorrectly installed: +-------------------------------------------------------------------------- + - copy dot.mkvars to the root directory of SOS, as ".mkvars" + - customize the CC/LD/... variables to suit your cross-compiler + installatioon + - now you may run make from the SOS root directory, it should + generate the Grub boot floppy image. The following warning is + normal: + .mkvars:16: attention : écrasement des commandes pour la cible « grub-sos.img » + Makefile:92: attention : anciennes commandes ignorées pour la cible « grub-sos.img » + + +*** To compile SOS with its own bootloader: +------------------------------------------- + - for cross-architecture compilation: see above + - cd to this extra/ directory + - run 'make' + - the floppy image is: sos_bsect.img + NOTE : SOS will not boot correctly this way after article 2 ! + + +-- +David Decotigny -- cgit v1.2.3