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xen_pvh: Support building a standalone image

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Support mkimage for xen_pvh.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Hans van Kranenburg <hans@knorrie.org>
This commit is contained in:
Juergen Gross 2018-12-07 13:11:46 +01:00 • committed by Daniel Kiper
parent 9bce25213a
commit 78899c42d7
5 changed files with 70 additions and 8 deletions
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44
util/grub-mkimagexx.c
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@ -229,12 +229,12 @@ SUFFIX (grub_mkimage_generate_elf) (const struct grub_install_image_target_desc
phnum++;
footer_size += sizeof (struct grub_ieee1275_note);
}
if (image_target->id == IMAGE_XEN)
if (image_target->id == IMAGE_XEN || image_target->id == IMAGE_XEN_PVH)
{
phnum++;
shnum++;
string_size += sizeof (".xen");
footer_size += XEN_NOTE_SIZE;
footer_size += (image_target->id == IMAGE_XEN) ? XEN_NOTE_SIZE : XEN_PVH_NOTE_SIZE;
}
header_size = ALIGN_UP (sizeof (*ehdr) + phnum * sizeof (*phdr)
+ shnum * sizeof (*shdr) + string_size, layout->align);
@ -421,6 +421,39 @@ SUFFIX (grub_mkimage_generate_elf) (const struct grub_install_image_target_desc
phdr->p_offset = grub_host_to_target32 (header_size + program_size);
}
if (image_target->id == IMAGE_XEN_PVH)
{
char *note_start = (elf_img + program_size + header_size);
Elf_Nhdr *note_ptr;
char *ptr = (char *) note_start;
grub_util_info ("adding XEN NOTE segment");
/* Phys32 Entry. */
note_ptr = (Elf_Nhdr *) ptr;
note_ptr->n_namesz = grub_host_to_target32 (sizeof (GRUB_XEN_NOTE_NAME));
note_ptr->n_descsz = grub_host_to_target32 (image_target->voidp_sizeof);
note_ptr->n_type = grub_host_to_target32 (XEN_ELFNOTE_PHYS32_ENTRY);
ptr += sizeof (Elf_Nhdr);
memcpy (ptr, GRUB_XEN_NOTE_NAME, sizeof (GRUB_XEN_NOTE_NAME));
ptr += ALIGN_UP (sizeof (GRUB_XEN_NOTE_NAME), 4);
memset (ptr, 0, image_target->voidp_sizeof);
*(grub_uint32_t *) ptr = GRUB_KERNEL_I386_XEN_PVH_LINK_ADDR;
ptr += image_target->voidp_sizeof;
assert (XEN_PVH_NOTE_SIZE == (ptr - note_start));
phdr++;
phdr->p_type = grub_host_to_target32 (PT_NOTE);
phdr->p_flags = grub_host_to_target32 (PF_R);
phdr->p_align = grub_host_to_target32 (image_target->voidp_sizeof);
phdr->p_vaddr = 0;
phdr->p_paddr = 0;
phdr->p_filesz = grub_host_to_target32 (XEN_PVH_NOTE_SIZE);
phdr->p_memsz = 0;
phdr->p_offset = grub_host_to_target32 (header_size + program_size);
}
if (note)
{
int note_size = sizeof (struct grub_ieee1275_note);
@ -496,7 +529,7 @@ SUFFIX (grub_mkimage_generate_elf) (const struct grub_install_image_target_desc
shdr->sh_entsize = grub_host_to_target32 (0);
shdr++;
if (image_target->id == IMAGE_XEN)
if (image_target->id == IMAGE_XEN || image_target->id == IMAGE_XEN_PVH)
{
memcpy (ptr, ".xen", sizeof (".xen"));
shdr->sh_name = grub_host_to_target32 (ptr - str_start);
@ -504,7 +537,10 @@ SUFFIX (grub_mkimage_generate_elf) (const struct grub_install_image_target_desc
shdr->sh_type = grub_host_to_target32 (SHT_PROGBITS);
shdr->sh_addr = grub_host_to_target_addr (target_addr + layout->kernel_size);
shdr->sh_offset = grub_host_to_target_addr (program_size + header_size);
shdr->sh_size = grub_host_to_target32 (XEN_NOTE_SIZE);
if (image_target->id == IMAGE_XEN)
shdr->sh_size = grub_host_to_target32 (XEN_NOTE_SIZE);
else
shdr->sh_size = grub_host_to_target32 (XEN_PVH_NOTE_SIZE);
shdr->sh_link = grub_host_to_target32 (0);
shdr->sh_info = grub_host_to_target32 (0);
shdr->sh_addralign = grub_host_to_target32 (image_target->voidp_sizeof);