Sparc bootblock [Was: SFS breaks PPC build ]
Marco Gerards wrote: As GRUB 2 is ported to the ultra sparc64 it might be wise for us (GRUB and solaris developers) to talk about multiboot. Of course other parties might be interested as well (the Hurd uses multiboot, for example). Anyway, what is important for you is that we are thinking about a portable multiboot and that there is also a sparc port in the making. Speaking of which, after refreshing my forth skills, I've started work on the sparc bootloader. I have it reading data from disk into mem, but I'm not sure if I want to share it quite yet. Before sharing it I'd like to: - have it verify that the file at the configured sector(s) is an ELF file - follow through and make sure it properly boots an ELF image (right now it only gets it into memory) - clean up the code a bunch I'll hand it over once I get those done. After that, the features I'd like to work on are: - support of a sector-sized lookup table indicating the layout of the grub image on disk, allowing for more flexible configuration - support of a sector-sized lookup table indicating additional forth bytecode, providing for extensibility just in case. - verify that the code works on PPC, and if not, try to make it work so that there's a unified bootblock [not sure if this is reasonable as I'm not as familiar with how PPC OF boots... how similiar is it to Sparc?] - same for sparc32 BG ___ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
Re: Sparc bootblock [Was: SFS breaks PPC build ]
Can OpenBoot directly boot ELF or COFF images? I looked at SILO and it seems it uses a 512-byte boot block to load second stage etc. On Oct 17, 2005, at 2:30 AM, Bart Grantham wrote: Marco Gerards wrote: As GRUB 2 is ported to the ultra sparc64 it might be wise for us (GRUB and solaris developers) to talk about multiboot. Of course other parties might be interested as well (the Hurd uses multiboot, for example). Anyway, what is important for you is that we are thinking about a portable multiboot and that there is also a sparc port in the making. Speaking of which, after refreshing my forth skills, I've started work on the sparc bootloader. I have it reading data from disk into mem, but I'm not sure if I want to share it quite yet. Before sharing it I'd like to: - have it verify that the file at the configured sector(s) is an ELF file - follow through and make sure it properly boots an ELF image (right now it only gets it into memory) - clean up the code a bunch I'll hand it over once I get those done. After that, the features I'd like to work on are: - support of a sector-sized lookup table indicating the layout of the grub image on disk, allowing for more flexible configuration - support of a sector-sized lookup table indicating additional forth bytecode, providing for extensibility just in case. - verify that the code works on PPC, and if not, try to make it work so that there's a unified bootblock [not sure if this is reasonable as I'm not as familiar with how PPC OF boots... how similiar is it to Sparc?] - same for sparc32 BG ___ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel ___ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
Re: Sparc bootblock [Was: SFS breaks PPC build ]
Bart Grantham wrote: - have it verify that the file at the configured sector(s) is an ELF file Quite easy if we stick to the header signature. - follow through and make sure it properly boots an ELF image (right now it only gets it into memory) I think there are 2 ways : -write your own Forth ELF relocating code (might be fun, but beside that...) -have the init-program command do this work for you, which require you to load the image where boot net loads it (or maybe other commands, but for now I only know about boot net as it is the only way to currently boot grub2 on sparc64 ;) ). - verify that the code works on PPC, and if not, try to make it work so that there's a unified bootblock [not sure if this is reasonable as I'm not as familiar with how PPC OF boots... how similiar is it to Sparc?] I think this one can't be done without making the FCode grow quite big. - same for sparc32 I would be interested if the port could be unified in 32bits. For now I built it 64bits - don't ask why :) - but if a 32bits build can work both on sparc32 and sparc64, I think it would be great for maintenance. Vincent Pelletier signature.asc Description: OpenPGP digital signature ___ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
