LE DISEZ Erwan wrote on 2013-02-15:
> Hello,
>
> I'am trying to boot a Linux kernel (v 2.3.32) compiled as not
> relocatable. The kernel works fine and can be loaded directly from GRUB2
> for example.
>
> When booting using GRUB2+TBOOT I use the following 'simple'
> configuration :
> menuentry "LINUX via TBOOT" {
> set root=(hd0,1)
> multiboot /tboot.gz /tboot.gz logging=vga,memory,serial
> module /lnx /lnx
> module /2nd_gen_i5_i7_SINIT_51.BIN
> }
>
> When loading TBOOT, the last traces just before jumping to Linux are :
> TBOOT: Error: ELF magic number is not matched.
> TBOOT: assuming kernel is Linux format
> TBOOT: kernel type is Linux
> TBOOT: Initrd from 0x7fc39000 to 0x7ffffeb0
> TBOOT: kernel is not relocatable
> TBOOT: load protected-mode part
> TBOOT: Kernel (protected mode) from 0x100000 to 0x4c3ab0
> TBOOT: load real-mode part
> TBOOT: Kernel (real mode) from 0x90000 to 0x93400
> TBOOT: Entry point initialized = 0xf1dbf443
> For a not relocated kernel all seems good no ?
> Protected base is 0x100000 (it is a bzImage)
> Read mode base is 0x90000
> The jump occurs to hdr->code32_start = @0xf1dbf443.
>
> Just after the system reset.
>
> So I have a few questions :
> - Have you already tested with a not relocatable Linux kernel ?Kernel has TXT/tboot support since v2.6.35. And I never tested a non-relocatable kernel specifically, but it is supposed to work only if the kernel memory doesn't overlap with tboot. > - It is normal to jump to 0xf1dbf443, why not the real mode part ? Jump to protection mode entry point just work, for any reason shall we bother to start from real mode part? Thanks. Jimmy
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