Re: [coreboot] Linux 4.7 kernel payload with CoreBoot 4.4

[ron minnich]

coreboot got fixed, not linux :-)

On Mon, Dec 12, 2016 at 8:05 AM Trammell Hudson  wrote:
> On Wed, Aug 10, 2016 at 07:03:58AM -0600, Trammell Hudson wrote:
> > The Linux 4.7 kernel payload crashes early in the boot process
> > with CoreBoot 4.4. [...]
>
> The recently released 4.9 kernel does not require any patches to boot
> as coreboot's payload.  The diffs in head_64.S appear to be
> related to the efi config values and I'm not sure if this is the
> actual change the fixed it:
>
> --- build/linux-4.7/arch/x86/boot/compressed/head_64.S  2016-12-12
> 10:21:20.934784655 -0500
> +++ build/linux-4.9/arch/x86/boot/compressed/head_64.S  2016-12-11
> 14:17:54.000000000 -0500
> @@ -265,7 +265,7 @@
>         /*
>          * Relocate efi_config->call().
>          */
>   addq    %rbp, efi64_config+88(%rip)
>   addq    %rbp, efi64_config+32(%rip)
>
>   movq    %rax, %rdi
>   call    make_boot_params
>
> @@ -285,7 +285,7 @@
>          * Relocate efi_config->call().
>          */
>         movq    efi_config(%rip), %rax
>   addq    %rbp, 88(%rax)
>   addq    %rbp, 32(%rax)
>
> 2:
>         movq    efi_config(%rip), %rdi
>         call    efi_main
> @@ -463,14 +457,14 @@
>  #ifdef CONFIG_EFI_MIXED
>         .global efi32_config
>  efi32_config:
>   .fill   11,8,0
>   .fill   4,8,0
>   .quad   efi64_thunk
>   .byte   0
>
> #endif
>     .global efi64_config
>
> efi64_config:
>   .fill   11,8,0
>   .fill   4,8,0
>   .quad   efi_call
>   .byte   1
>
> #endif /* CONFIG_EFI_STUB */