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Diffstat (limited to 'lib/efi_loader/efi_device_path_to_text.c')
-rw-r--r--lib/efi_loader/efi_device_path_to_text.c242
1 files changed, 180 insertions, 62 deletions
diff --git a/lib/efi_loader/efi_device_path_to_text.c b/lib/efi_loader/efi_device_path_to_text.c
index 4b2f43f0c8..1a5ef3919b 100644
--- a/lib/efi_loader/efi_device_path_to_text.c
+++ b/lib/efi_loader/efi_device_path_to_text.c
@@ -15,81 +15,199 @@
const efi_guid_t efi_guid_device_path_to_text_protocol =
EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID;
-static uint16_t *efi_convert_device_node_to_text(
- struct efi_device_path_protocol *device_node,
- bool display_only,
- bool allow_shortcuts)
+static char *dp_unknown(char *s, struct efi_device_path *dp)
{
- unsigned long buffer_size;
- efi_status_t r;
- uint16_t *buffer = NULL;
- int i;
+ s += sprintf(s, "/UNKNOWN(%04x,%04x)", dp->type, dp->sub_type);
+ return s;
+}
- switch (device_node->type) {
- case DEVICE_PATH_TYPE_END:
- return NULL;
- case DEVICE_PATH_TYPE_MESSAGING_DEVICE:
- switch (device_node->sub_type) {
- case DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR: {
- struct efi_device_path_mac_addr *dp =
- (struct efi_device_path_mac_addr *)device_node;
-
- if (dp->if_type != 0 && dp->if_type != 1)
- break;
- r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
- 2 * MAC_OUTPUT_LEN,
- (void **)&buffer);
- if (r != EFI_SUCCESS)
- return NULL;
- sprintf((char *)buffer,
- "MAC(%02x%02x%02x%02x%02x%02x,0x%1x)",
- dp->mac.addr[0], dp->mac.addr[1],
- dp->mac.addr[2], dp->mac.addr[3],
- dp->mac.addr[4], dp->mac.addr[5],
- dp->if_type);
- for (i = MAC_OUTPUT_LEN - 1; i >= 0; --i)
- buffer[i] = ((uint8_t *)buffer)[i];
+static char *dp_hardware(char *s, struct efi_device_path *dp)
+{
+ switch (dp->sub_type) {
+ case DEVICE_PATH_SUB_TYPE_VENDOR: {
+ struct efi_device_path_vendor *vdp =
+ (struct efi_device_path_vendor *)dp;
+ s += sprintf(s, "/VenHw(%pUl)", &vdp->guid);
+ break;
+ }
+ default:
+ s = dp_unknown(s, dp);
+ break;
+ }
+ return s;
+}
+
+static char *dp_acpi(char *s, struct efi_device_path *dp)
+{
+ switch (dp->sub_type) {
+ case DEVICE_PATH_SUB_TYPE_ACPI_DEVICE: {
+ struct efi_device_path_acpi_path *adp =
+ (struct efi_device_path_acpi_path *)dp;
+ s += sprintf(s, "/Acpi(PNP%04x", EISA_PNP_NUM(adp->hid));
+ if (adp->uid)
+ s += sprintf(s, ",%d", adp->uid);
+ s += sprintf(s, ")");
+ break;
+ }
+ default:
+ s = dp_unknown(s, dp);
+ break;
+ }
+ return s;
+}
+
+static char *dp_msging(char *s, struct efi_device_path *dp)
+{
+ switch (dp->sub_type) {
+ case DEVICE_PATH_SUB_TYPE_MSG_USB: {
+ struct efi_device_path_usb *udp =
+ (struct efi_device_path_usb *)dp;
+ s += sprintf(s, "/Usb(0x%x,0x%x)", udp->parent_port_number,
+ udp->usb_interface);
+ break;
+ }
+ case DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR: {
+ struct efi_device_path_mac_addr *mdp =
+ (struct efi_device_path_mac_addr *)dp;
+
+ if (mdp->if_type != 0 && mdp->if_type != 1)
break;
- }
- }
+
+ s += sprintf(s, "/MAC(%02x%02x%02x%02x%02x%02x,0x%1x)",
+ mdp->mac.addr[0], mdp->mac.addr[1],
+ mdp->mac.addr[2], mdp->mac.addr[3],
+ mdp->mac.addr[4], mdp->mac.addr[5],
+ mdp->if_type);
+
+ break;
+ }
+ case DEVICE_PATH_SUB_TYPE_MSG_USB_CLASS: {
+ struct efi_device_path_usb_class *ucdp =
+ (struct efi_device_path_usb_class *)dp;
+
+ s += sprintf(s, "/USBClass(%x,%x,%x,%x,%x)",
+ ucdp->vendor_id, ucdp->product_id,
+ ucdp->device_class, ucdp->device_subclass,
+ ucdp->device_protocol);
+
+ break;
+ }
+ case DEVICE_PATH_SUB_TYPE_MSG_SD:
+ case DEVICE_PATH_SUB_TYPE_MSG_MMC: {
+ const char *typename =
+ (dp->sub_type == DEVICE_PATH_SUB_TYPE_MSG_SD) ?
+ "SDCard" : "MMC";
+ struct efi_device_path_sd_mmc_path *sddp =
+ (struct efi_device_path_sd_mmc_path *)dp;
+ s += sprintf(s, "/%s(Slot%u)", typename, sddp->slot_number);
+ break;
+ }
+ default:
+ s = dp_unknown(s, dp);
break;
- case DEVICE_PATH_TYPE_MEDIA_DEVICE:
- switch (device_node->sub_type) {
- case DEVICE_PATH_SUB_TYPE_FILE_PATH:
- buffer_size = device_node->length - 4;
- r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
- buffer_size, (void **) &buffer);
- if (r != EFI_SUCCESS)
- return NULL;
- memcpy(buffer, device_node->data, buffer_size);
+ }
+ return s;
+}
+
+static char *dp_media(char *s, struct efi_device_path *dp)
+{
+ switch (dp->sub_type) {
+ case DEVICE_PATH_SUB_TYPE_HARD_DRIVE_PATH: {
+ struct efi_device_path_hard_drive_path *hddp =
+ (struct efi_device_path_hard_drive_path *)dp;
+ void *sig = hddp->partition_signature;
+
+ switch (hddp->signature_type) {
+ case SIG_TYPE_MBR:
+ s += sprintf(s, "/HD(Part%d,Sig%08x)",
+ hddp->partition_number,
+ *(uint32_t *)sig);
break;
+ case SIG_TYPE_GUID:
+ s += sprintf(s, "/HD(Part%d,Sig%pUl)",
+ hddp->partition_number, sig);
+ default:
+ s += sprintf(s, "/HD(Part%d,MBRType=%02x,SigType=%02x)",
+ hddp->partition_number, hddp->partmap_type,
+ hddp->signature_type);
}
+
+ break;
+ }
+ case DEVICE_PATH_SUB_TYPE_CDROM_PATH: {
+ struct efi_device_path_cdrom_path *cddp =
+ (struct efi_device_path_cdrom_path *)dp;
+ s += sprintf(s, "/CDROM(0x%x)", cddp->boot_entry);
+ break;
+ }
+ case DEVICE_PATH_SUB_TYPE_FILE_PATH: {
+ struct efi_device_path_file_path *fp =
+ (struct efi_device_path_file_path *)dp;
+ int slen = (dp->length - sizeof(*dp)) / 2;
+ s += sprintf(s, "/%-*ls", slen, fp->str);
break;
}
+ default:
+ s = dp_unknown(s, dp);
+ break;
+ }
+ return s;
+}
- /*
- * For all node types that we do not yet support return
- * 'UNKNOWN(type,subtype)'.
- */
- if (!buffer) {
- r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
- 2 * UNKNOWN_OUTPUT_LEN,
- (void **)&buffer);
- if (r != EFI_SUCCESS)
- return NULL;
- sprintf((char *)buffer,
- "UNKNOWN(%04x,%04x)",
- device_node->type,
- device_node->sub_type);
- for (i = UNKNOWN_OUTPUT_LEN - 1; i >= 0; --i)
- buffer[i] = ((uint8_t *)buffer)[i];
+static uint16_t *efi_convert_device_node_to_text(
+ struct efi_device_path *dp,
+ bool display_only,
+ bool allow_shortcuts)
+{
+ unsigned long len;
+ efi_status_t r;
+ char buf[512]; /* this ought be be big enough for worst case */
+ char *str = buf;
+ uint16_t *out;
+
+ while (dp) {
+ switch (dp->type) {
+ case DEVICE_PATH_TYPE_HARDWARE_DEVICE:
+ str = dp_hardware(str, dp);
+ break;
+ case DEVICE_PATH_TYPE_ACPI_DEVICE:
+ str = dp_acpi(str, dp);
+ break;
+ case DEVICE_PATH_TYPE_MESSAGING_DEVICE:
+ str = dp_msging(str, dp);
+ break;
+ case DEVICE_PATH_TYPE_MEDIA_DEVICE:
+ str = dp_media(str, dp);
+ break;
+ default:
+ str = dp_unknown(str, dp);
+ }
+
+ dp = efi_dp_next(dp);
}
- return buffer;
+ *str++ = '\0';
+
+ len = str - buf;
+ r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, 2 * len, (void **)&out);
+ if (r != EFI_SUCCESS)
+ return NULL;
+
+ ascii2unicode(out, buf);
+ out[len - 1] = 0;
+
+ return out;
}
+/* helper for debug prints.. efi_free_pool() the result. */
+uint16_t *efi_dp_str(struct efi_device_path *dp)
+{
+ return efi_convert_device_node_to_text(dp, true, true);
+}
+
+
static uint16_t EFIAPI *efi_convert_device_node_to_text_ext(
- struct efi_device_path_protocol *device_node,
+ struct efi_device_path *device_node,
bool display_only,
bool allow_shortcuts)
{
@@ -105,7 +223,7 @@ static uint16_t EFIAPI *efi_convert_device_node_to_text_ext(
}
static uint16_t EFIAPI *efi_convert_device_path_to_text(
- struct efi_device_path_protocol *device_path,
+ struct efi_device_path *device_path,
bool display_only,
bool allow_shortcuts)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 13:00:47 +0000