Re: [PATCH v2 4/6] multiboot2: Add tags used to pass ImageHandle to loaded image

[Vladimir 'φ-coder/phcoder' Serbinenko]

On 09.11.2015 20:15, Vladimir 'phcoder' Serbinenko wrote:
> Lgtm
> 
> Le 20 juil. 2015 4:36 PM, "Daniel Kiper" <address@hidden
> <mailto:address@hidden>> a écrit :
> 
>     Add tags used to pass ImageHandle to loaded image. It is used
>     by at least ExitBootServices() function.
> 
>     Signed-off-by: Daniel Kiper <address@hidden
>     <mailto:address@hidden>>
>     ---
>      grub-core/loader/multiboot_mbi2.c |   46
>     +++++++++++++++++++++++++++++--------
>      include/multiboot2.h              |   16 +++++++++++++
>      2 files changed, 53 insertions(+), 9 deletions(-)
> 
>     diff --git a/grub-core/loader/multiboot_mbi2.c
>     b/grub-core/loader/multiboot_mbi2.c
>     index 8d66e3f..dc9c709 100644
>     --- a/grub-core/loader/multiboot_mbi2.c
>     +++ b/grub-core/loader/multiboot_mbi2.c
>     @@ -172,6 +172,8 @@ grub_multiboot_load (grub_file_t file, const
>     char *filename)
>                   case MULTIBOOT_TAG_TYPE_NETWORK:
>                   case MULTIBOOT_TAG_TYPE_EFI_MMAP:
>                   case MULTIBOOT_TAG_TYPE_EFI_BS:
>     +             case MULTIBOOT_TAG_TYPE_EFI32_IH:
>     +             case MULTIBOOT_TAG_TYPE_EFI64_IH:
>                     break;
> 
>                   default:
>     @@ -407,16 +409,18 @@ grub_multiboot_get_mbi_size (void)
>                      + grub_get_multiboot_mmap_count ()
>                      * sizeof (struct multiboot_mmap_entry)),
>     MULTIBOOT_TAG_ALIGN)
>          + ALIGN_UP (sizeof (struct multiboot_tag_framebuffer),
>     MULTIBOOT_TAG_ALIGN)
>     +#ifdef GRUB_MACHINE_EFI
>          + ALIGN_UP (sizeof (struct multiboot_tag_efi32),
>     MULTIBOOT_TAG_ALIGN)
>          + ALIGN_UP (sizeof (struct multiboot_tag_efi64),
>     MULTIBOOT_TAG_ALIGN)
>     +    + ALIGN_UP (sizeof (struct multiboot_tag_efi32_ih),
>     MULTIBOOT_TAG_ALIGN)
>     +    + ALIGN_UP (sizeof (struct multiboot_tag_efi64_ih),
>     MULTIBOOT_TAG_ALIGN)
>     +    + ALIGN_UP (sizeof (struct multiboot_tag_efi_mmap)
>     +               + efi_mmap_size, MULTIBOOT_TAG_ALIGN)
>     +#endif
>          + ALIGN_UP (sizeof (struct multiboot_tag_old_acpi)
>                     + sizeof (struct grub_acpi_rsdp_v10),
>     MULTIBOOT_TAG_ALIGN)
>          + acpiv2_size ()
>          + net_size ()
>     -#ifdef GRUB_MACHINE_EFI
>     -    + ALIGN_UP (sizeof (struct multiboot_tag_efi_mmap)
>     -               + efi_mmap_size, MULTIBOOT_TAG_ALIGN)
>     -#endif
>          + sizeof (struct multiboot_tag_vbe) + MULTIBOOT_TAG_ALIGN - 1
>          + sizeof (struct multiboot_tag_apm) + MULTIBOOT_TAG_ALIGN - 1;
>      }
>     @@ -906,11 +910,35 @@ grub_multiboot_make_mbi (grub_uint32_t *target)
> 
>        if (keep_bs)
>          {
>     -      struct multiboot_tag *tag = (struct multiboot_tag *) ptrorig;
>     -      tag->type = MULTIBOOT_TAG_TYPE_EFI_BS;
>     -      tag->size = sizeof (struct multiboot_tag);
>     -      ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
>     -       / sizeof (grub_properly_aligned_t);
>     +      {
>     +       struct multiboot_tag *tag = (struct multiboot_tag *) ptrorig;
>     +       tag->type = MULTIBOOT_TAG_TYPE_EFI_BS;
>     +       tag->size = sizeof (struct multiboot_tag);
>     +       ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
>     +         / sizeof (grub_properly_aligned_t);
>     +      }
>     +
>     +#ifdef __x86_64__
>     +      {
>     +       struct multiboot_tag_efi64_ih *tag = (struct
>     multiboot_tag_efi64_ih *) ptrorig;
>     +       tag->type = MULTIBOOT_TAG_TYPE_EFI64_IH;
>     +       tag->size = sizeof (*tag);
>     +       tag->pointer = (grub_addr_t) grub_efi_image_handle;
>     +       ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
>     +         / sizeof (grub_properly_aligned_t);
>     +      }
>     +#endif
>     +
>     +#ifdef __i386__
>     +      {
>     +       struct multiboot_tag_efi32_ih *tag = (struct
>     multiboot_tag_efi32_ih *) ptrorig;
>     +       tag->type = MULTIBOOT_TAG_TYPE_EFI32_IH;
>     +       tag->size = sizeof (*tag);
>     +       tag->pointer = (grub_addr_t) grub_efi_image_handle;
>     +       ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
>     +         / sizeof (grub_properly_aligned_t);
>     +      }
>     +#endif
>          }
>      #endif
> 
>     diff --git a/include/multiboot2.h b/include/multiboot2.h
>     index b3977e3..9f97ddc 100644
>     --- a/include/multiboot2.h
>     +++ b/include/multiboot2.h
>     @@ -60,6 +60,8 @@
>      #define MULTIBOOT_TAG_TYPE_NETWORK           16
>      #define MULTIBOOT_TAG_TYPE_EFI_MMAP          17
>      #define MULTIBOOT_TAG_TYPE_EFI_BS            18
>     +#define MULTIBOOT_TAG_TYPE_EFI32_IH          19
>     +#define MULTIBOOT_TAG_TYPE_EFI64_IH          20
> 
>      #define MULTIBOOT_HEADER_TAG_END  0
>      #define MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST  1
>     @@ -379,6 +381,20 @@ struct multiboot_tag_efi_mmap
>        multiboot_uint8_t efi_mmap[0];
>      };
> 
>     +struct multiboot_tag_efi32_ih
>     +{
>     +  multiboot_uint32_t type;
>     +  multiboot_uint32_t size;
>     +  multiboot_uint32_t pointer;
>     +};
>     +
>     +struct multiboot_tag_efi64_ih
>     +{
>     +  multiboot_uint32_t type;
>     +  multiboot_uint32_t size;
>     +  multiboot_uint64_t pointer;
>     +};
>     +
>      #endif /* ! ASM_FILE */
> 
>      #endif /* ! MULTIBOOT_HEADER */
>     --
>     1.7.10.4
>

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