static struct grub_efidisk_data *
make_devices (void)
{
grub_efi_uintn_t num_handles;
grub_efi_handle_t *handles;
grub_efi_handle_t *handle;
struct grub_efidisk_data *devices = 0;
/* Find handles which support the disk io interface. */
handles = grub_efi_locate_handle (GRUB_EFI_BY_PROTOCOL, &block_io_guid,
0, &num_handles);
if (! handles)
return 0;
/* Make a linked list of devices. */
for (handle = handles; num_handles--; handle++)
{
grub_efi_device_path_t *dp;
grub_efi_device_path_t *ldp;
struct grub_efidisk_data *d;
grub_efi_block_io_t *bio;
dp = grub_efi_get_device_path (*handle);
if (! dp)
continue;
ldp = find_last_device_path (dp);
if (! ldp)
/* This is empty. Why? */
continue;
bio = grub_efi_open_protocol (*handle, &block_io_guid,
GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (! bio)
/* This should not happen... Why? */
continue;
d = grub_malloc (sizeof (*d));
if (! d)
{
/* Uggh. */
grub_free (handles);
return 0;
}
d->handle = *handle;
d->device_path = dp;
d->last_device_path = ldp;
d->block_io = bio;
d->next = devices;
devices = d;
}
grub_free (handles);
return devices;
}
static grub_efi_boolean_t
grub_tpm_handle_find (grub_efi_handle_t *tpm_handle,
grub_efi_uint8_t *protocol_version)
{
grub_efi_handle_t *handles;
grub_efi_uintn_t num_handles;
if (grub_tpm_handle != NULL)
{
*tpm_handle = grub_tpm_handle;
*protocol_version = grub_tpm_version;
return 1;
}
handles = grub_efi_locate_handle (GRUB_EFI_BY_PROTOCOL, &tpm_guid, NULL,
&num_handles);
if (handles && num_handles > 0)
{
grub_tpm_handle = handles[0];
*tpm_handle = handles[0];
grub_tpm_version = 1;
*protocol_version = 1;
return 1;
}
handles = grub_efi_locate_handle (GRUB_EFI_BY_PROTOCOL, &tpm2_guid, NULL,
&num_handles);
if (handles && num_handles > 0)
{
grub_tpm_handle = handles[0];
*tpm_handle = handles[0];
grub_tpm_version = 2;
*protocol_version = 2;
return 1;
}
return 0;
}
