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7fc11e15bb
- it will now successfully take over the MMU, but it doesn't tell OF yet about it. - map_page() will now fill in the page table relative to sSegments[], and no longer to the segment registers directly (as they might be different at that time, depending on the OF). - map_page() will panic if it couldn't find a free slot in the page table (that's enough for the boot loader) - finds the exception handlers mapping and sets the kernel args - rewrote insert_memory_range(); it now actually works in all cases (no matter if the ranges overlap or not, and it will also join ranges if possible). The start address will now be round down to page aligment. - some other small fixes - the page table is now cleared before use (as of_claim() obviously doesn't return cleared memory). - replaced some uint32 with addr_t where it made sense (there are probably even more places). git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5093 a95241bf-73f2-0310-859d-f6bbb57e9c96
Building -------- The build system uses Jam/MR (http://www.perforce.com/jam/jam.html). A BeOS executable of Jam 2.4 is available at: http://open-beos.sf.net/misc/jam.zip Unzip the executable and copy it to /boot/home/config/bin. The Jam source code is also included in the source tree. You can as well cd into "src/tools/jam" and run "make" to obtain an executable. To build the whole source tree, launch a Terminal, cd into the openbeos root directory and just type: $ ./configure $ jam The configure script generates a file named BuildConfig. As long as configure is not modified (!), there is no need to call it again. That is for re-building you only need to invoke Jam. If you don't update the source tree very frequently, you may want to execute configure after each update just to be on the safe side. NOTE: If you have checked out the latest CVS version, it is not unlikely that some parts of the tree won't build. Running ------- If the build went fine, a file named floppy.x86 had been created in the target specific objects directory (objects/x86.R1 for x86 machines). What you want to do now, is to boot from this floppy image. Therefore you either write the image onto a real floppy disk and restart you computer, or you write it onto a "virtual floppy disk" emulated by a x86 PC emulator and just start this emulator. 1. Real Floppy Put in the disk and type in the source tree's root dir: $ dd if=objects/x86.R1/floppy.x86 of=/dev/disk/floppy/raw bs=18k 2. Emulated Floppy (Bochs) Type: $ dd if=objects/x86.R1/floppy.x86 of=<floppy image> bs=18k where <floppy image> has to be replaced with the filename of the floppy image Bochs has been told to use (e.g. /tmp/obos.img). For both cases there is also an simpler way: $ jam installfloppy This builds the floppy image, if it is not up to date, and writes it to a previously specified location. Therefore you must tell configure where this location is: $ ./configure --floppy /dev/disk/floppy/raw Ananlogously for the emulated floppy. Bochs ----- Version 1.4 of Bochs for BeOS (BeBochs) can be downloaded from BeBits: http://www.bebits.com/app/2902 The package installs to: /boot/apps/BeBochs1.4 You have to set up a configuration for Bochs. A relatively short and painless procedure follows: Lauch a Terminal: $ cd /tmp $ /boot/apps/BeBochs1.4/bximage Answer with "fd", RETURN (for 1.44) and "obos.img", and a floppy image /tmp/obos.img will be created. Open folder /boot/apps/BeBochs1.4 and backup .bochsrc. Open .bochsrc with your favorite text editor, remove the complete contents and paste the following instead (you may as well take the original file and insert/replace/ keep the respective lines): romimage: file=bios/BIOS-bochs-latest, address=0xf0000 megs: 32 vgaromimage: bios/VGABIOS-elpin-2.40 floppya: 1_44=/tmp/obos.img, status=inserted boot: a log: /var/log/bochs-obos.log panic: action=ask error: action=report info: action=report debug: action=ignore vga_update_interval: 300000 keyboard_serial_delay: 250 keyboard_paste_delay: 100000 floppy_command_delay: 500 ips: 2000000 Now put the OBOS boot image onto you "virtual" floppy and start Bochs: $ cd <OBOS sources directory> $ jam installfloppy $ cd /boot/apps/BeBochs1.4 $ ./bochs Answer three times with RETURN and with some patience you will see OBOS booting.