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efi_loader: add UEFI GPT measurement

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This commit adds the UEFI GPT disk partition topology
measurement required in TCG PC Client Platform Firmware
Profile Specification

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
This commit is contained in:
Masahisa Kojima 2021-10-26 17:27:25 +09:00 • committed by Heinrich Schuchardt
parent 3d49ee8510
commit ce3dbc5d08
6 changed files with 190 additions and 3 deletions
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27
lib/efi_loader/efi_device_path.c
View file

@ -1239,3 +1239,30 @@ efi_device_path *efi_dp_from_lo(struct efi_load_option *lo,
return NULL;
}
/**
* search_gpt_dp_node() - search gpt device path node
*
* @device_path: device path
*
* Return: pointer to the gpt device path node
*/
struct efi_device_path *search_gpt_dp_node(struct efi_device_path *device_path)
{
struct efi_device_path *dp = device_path;
while (dp) {
if (dp->type == DEVICE_PATH_TYPE_MEDIA_DEVICE &&
dp->sub_type == DEVICE_PATH_SUB_TYPE_HARD_DRIVE_PATH) {
struct efi_device_path_hard_drive_path *hd_dp =
(struct efi_device_path_hard_drive_path *)dp;
if (hd_dp->partmap_type == PART_FORMAT_GPT &&
hd_dp->signature_type == SIG_TYPE_GUID)
return dp;
}
dp = efi_dp_next(dp);
}
return NULL;
}