static int xc_dom_load_elf_kernel(struct xc_dom_image *dom)
{
struct elf_binary *elf = dom->private_loader;
elf->dest = xc_dom_seg_to_ptr(dom, &dom->kernel_seg);
elf_load_binary(elf);
if ( dom->parms.bsd_symtab )
xc_dom_load_elf_symtab(dom, elf, 1);
return 0;
}
static int __init pvh_load_kernel(struct domain *d, const module_t *image,
unsigned long image_headroom,
module_t *initrd, void *image_base,
char *cmdline, paddr_t *entry,
paddr_t *start_info_addr)
{
void *image_start = image_base + image_headroom;
unsigned long image_len = image->mod_end;
struct elf_binary elf;
struct elf_dom_parms parms;
paddr_t last_addr;
struct hvm_start_info start_info = { 0 };
struct hvm_modlist_entry mod = { 0 };
struct vcpu *v = d->vcpu[0];
int rc;
if ( (rc = bzimage_parse(image_base, &image_start, &image_len)) != 0 )
{
printk("Error trying to detect bz compressed kernel\n");
return rc;
}
if ( (rc = elf_init(&elf, image_start, image_len)) != 0 )
{
printk("Unable to init ELF\n");
return rc;
}
#ifdef VERBOSE
elf_set_verbose(&elf);
#endif
elf_parse_binary(&elf);
if ( (rc = elf_xen_parse(&elf, &parms)) != 0 )
{
printk("Unable to parse kernel for ELFNOTES\n");
return rc;
}
if ( parms.phys_entry == UNSET_ADDR32 )
{
printk("Unable to find XEN_ELFNOTE_PHYS32_ENTRY address\n");
return -EINVAL;
}
printk("OS: %s version: %s loader: %s bitness: %s\n", parms.guest_os,
parms.guest_ver, parms.loader,
elf_64bit(&elf) ? "64-bit" : "32-bit");
/* Copy the OS image and free temporary buffer. */
elf.dest_base = (void *)(parms.virt_kstart - parms.virt_base);
elf.dest_size = parms.virt_kend - parms.virt_kstart;
elf_set_vcpu(&elf, v);
rc = elf_load_binary(&elf);
if ( rc < 0 )
{
printk("Failed to load kernel: %d\n", rc);
printk("Xen dom0 kernel broken ELF: %s\n", elf_check_broken(&elf));
return rc;
}
last_addr = ROUNDUP(parms.virt_kend - parms.virt_base, PAGE_SIZE);
if ( initrd != NULL )
{
rc = hvm_copy_to_guest_phys(last_addr, mfn_to_virt(initrd->mod_start),
initrd->mod_end, v);
if ( rc )
{
printk("Unable to copy initrd to guest\n");
return rc;
}
mod.paddr = last_addr;
mod.size = initrd->mod_end;
last_addr += ROUNDUP(initrd->mod_end, PAGE_SIZE);
}
/* Free temporary buffers. */
discard_initial_images();
if ( cmdline != NULL )
{
rc = hvm_copy_to_guest_phys(last_addr, cmdline, strlen(cmdline) + 1, v);
if ( rc )
{
printk("Unable to copy guest command line\n");
return rc;
}
start_info.cmdline_paddr = last_addr;
/*
* Round up to 32/64 bits (depending on the guest kernel bitness) so
* the modlist/start_info is aligned.
*/
last_addr += ROUNDUP(strlen(cmdline) + 1, elf_64bit(&elf) ? 8 : 4);
}
if ( initrd != NULL )
{
rc = hvm_copy_to_guest_phys(last_addr, &mod, sizeof(mod), v);
if ( rc )
{
printk("Unable to copy guest modules\n");
return rc;
}
start_info.modlist_paddr = last_addr;
start_info.nr_modules = 1;
last_addr += sizeof(mod);
}
start_info.magic = XEN_HVM_START_MAGIC_VALUE;
start_info.flags = SIF_PRIVILEGED | SIF_INITDOMAIN;
rc = hvm_copy_to_guest_phys(last_addr, &start_info, sizeof(start_info), v);
if ( rc )
{
printk("Unable to copy start info to guest\n");
return rc;
}
*entry = parms.phys_entry;
*start_info_addr = last_addr;
return 0;
}
