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@@ -0,0 +1,78 @@ +plymouth - fbdev based graphical boot + +INSTALL + +Get the SRPMS and rpmbuild --rebuild them. libpng-static is a build +requirement of mkinitrd so build and install that before building +mkinitrd. To build the kernel SRPM, pass --target i686 to rpmbuild. + + libpng-1.2.10-1.plymouth.src.rpm + initscripts-8.33-1.src.rpm + mkinitrd-5.0.34-1.plymouth.src.rpm + SysVinit-2.86-3.plymouth.src.rpm + rhgb-0.16.3-1.plymouth.src.rpm + kernel-2.6.16-1.2139_FC6.plymouth.src.rpm + +Then install them and run (as root) mkinitrd to create an initrd for +your current kernel that has the graphical boot bits in it: + + $ mkinitrd /boot/plymouth-initrd-$(uname -r) $(uname -r) + +Run grubby to add an entry to /etc/grub.conf: + + $ grubby --grub --copy-default \ + --title="Plymouth $(uname -r)" \ + --add-kernel=/boot/vmlinuz-$(uname -r) \ + --initrd=/boot/plymouth-initrd-$(uname -r).img \ + --args="vga=0x318 rhgb quiet" + +or hand-edit /etc/grub.conf if you prefer and make an entry that boots +with the new initrd and passes vga=0x318, rhgb, and quiet on the +kernel command line. + +Edit /etc/inittab to not start a tty on vt0: + + $ sed -ie 's/1:2345/# 1:2345/' /etc/inittab + +Reboot! + + +HOW IT WORKS + +We're using the kernel fbdev driver to initialize the display to +1024x768 24bpp as soon as the kernel boots up. At this point the +kernel boots up with a black background and shows a picture of a fat +penguin. The kernel patch disables the Linux logo and re-enables the +quiet boot mode. I'd like to teach the kernel to clear the background +color to the background color set by nash later on, but for now the +patch just makes it boot into a black 1024x768. This solid color +background patch and using fbdev are the only changes to the kernel. + +A few seconds after the kernel boots, the initrd starts up. The +changes to initrd includes making nash less chatty in quiet mode, and +adding a 'logo' command to the nash shell that it can load and display +a fedora PNG logo from the initrd. + +Next step is rhgb. The changes to rhgb replaces all the X server +startup/hand-holding code and the gtk+ progress screen and just paints +on the fbdev using cairo. Other than that, most of the rhgb progress +feedback is reused, the initscripts report back to rhgb throughout the +boot process as they have always done. + + +NEXT STEPS + +- Silence grub completely - don't show the menu, don't show the info + about what we're booting, don't show anything. Enter the menu only + if the user holds down some key. + +- Fall back to text mode in rhgb if something fails, or at least make + a note of it and let the user review the log at a later time. Also, + probably bind Esc or some key to drop back into full textual boot. + +- Actually write the kernel patch to initialize the fbdev to a given + solid color. + +- Make the transition from the rhgb fbdev into X smoother. Don't do + mode-setting in X and reuse framebuffer contents when possible or + crazy-talk like that. |