On 07.04.2011 16:50, Goswin von Brederlow wrote: > "Vladimir 'φ-coder/phcoder' Serbinenko" <phco...@gmail.com> writes: > >> On 07.04.2011 14:09, Goswin von Brederlow wrote: >>> Hi, >>> >>> I've been working on a 32bit->64bit trampoline based on the example >>> kernel that just switches to 64bit mode and executes a real kernel >>> passed as module. As real kernel I want to use grubs example kernel as >>> well to just verify the multiboot infos passed through the trampoline >>> are intact. >> Please don't use outdated code as base. Now we work on multiboot2 and > I've seen multiboot2 mentioned but I can't find specs for it. What I > did find are the "Multiboot Specification version 0.6.96" [1] > > So where is this multiboot2? > Latest multiboot1 (cleanups) is at http://bzr.savannah.gnu.org/r/grub/trunk/multiboot/ Multiboot2 is at http://bzr.savannah.gnu.org/r/grub/branches/multiboot2/ >> before just "let's replace all 32 with 64" some things like page table >> need to be duîscussed. Please start a discussion thread for those > Actualy what I needed to do was replace the 64 with 32. My 64bit mode > still uses the multiboot specs with its 32bit fields. I use that because > that is what grub and kvm give me. Most changes were just to make it use > 32bit data types in 32bit and 64bit mode as required by the specs. > > For page tables I use 6 pages. 1x Level 4, 1x Level 3, 4x Level 2 with > 2MB granularity creating a 1:1 mapping of the first 4 GB ram. But I've > been thinking that maybe the multiboot header could have entries for > the gpt and page table to be used. But that is something do discuss in > another thread. > > MfG > Goswin > > [1] http://www.gnu.org/software/grub/manual/multiboot/multiboot.html >
-- Regards Vladimir 'φ-coder/phcoder' Serbinenko
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