+// SPDX-License-Identifier: GPL-2.0+
/*
* EFI device path interface
*
* Copyright (c) 2017 Heinrich Schuchardt
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <blk.h>
#include <efi_loader.h>
#define MAC_OUTPUT_LEN 22
#define UNKNOWN_OUTPUT_LEN 23
+#define MAX_NODE_LEN 512
+#define MAX_PATH_LEN 1024
+
const efi_guid_t efi_guid_device_path_to_text_protocol =
EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID;
+/**
+ * efi_str_to_u16() - convert ASCII string to UTF-16
+ *
+ * A u16 buffer is allocated from pool. The ASCII string is copied to the u16
+ * buffer.
+ *
+ * @str: ASCII string
+ * Return: UTF-16 string. NULL if out of memory.
+ */
+static u16 *efi_str_to_u16(char *str)
+{
+ efi_uintn_t len;
+ u16 *out, *dst;
+ efi_status_t ret;
+
+ len = sizeof(u16) * (utf8_utf16_strlen(str) + 1);
+ ret = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, len, (void **)&out);
+ if (ret != EFI_SUCCESS)
+ return NULL;
+ dst = out;
+ utf8_utf16_strcpy(&dst, str);
+ return out;
+}
+
static char *dp_unknown(char *s, struct efi_device_path *dp)
{
- s += sprintf(s, "/UNKNOWN(%04x,%04x)", dp->type, dp->sub_type);
+ s += sprintf(s, "UNKNOWN(%04x,%04x)", dp->type, dp->sub_type);
return s;
}
static char *dp_hardware(char *s, struct efi_device_path *dp)
{
switch (dp->sub_type) {
+ case DEVICE_PATH_SUB_TYPE_MEMORY: {
+ struct efi_device_path_memory *mdp =
+ (struct efi_device_path_memory *)dp;
+ s += sprintf(s, "MemoryMapped(0x%x,0x%llx,0x%llx)",
+ mdp->memory_type,
+ mdp->start_address,
+ mdp->end_address);
+ break;
+ }
case DEVICE_PATH_SUB_TYPE_VENDOR: {
+ int i, n;
struct efi_device_path_vendor *vdp =
(struct efi_device_path_vendor *)dp;
- s += sprintf(s, "/VenHw(%pUl)", &vdp->guid);
+
+ s += sprintf(s, "VenHw(%pUl", &vdp->guid);
+ n = (int)vdp->dp.length - sizeof(struct efi_device_path_vendor);
+ if (n > 0) {
+ s += sprintf(s, ",");
+ for (i = 0; i < n; ++i)
+ s += sprintf(s, "%02x", vdp->vendor_data[i]);
+ }
+ s += sprintf(s, ")");
break;
}
default:
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, ")");
+
+ s += sprintf(s, "Acpi(PNP%04X,%d)", EISA_PNP_NUM(adp->hid),
+ adp->uid);
break;
}
default:
static char *dp_msging(char *s, struct efi_device_path *dp)
{
switch (dp->sub_type) {
+ case DEVICE_PATH_SUB_TYPE_MSG_ATAPI: {
+ struct efi_device_path_atapi *ide =
+ (struct efi_device_path_atapi *)dp;
+ s += sprintf(s, "Ata(%d,%d,%d)", ide->primary_secondary,
+ ide->slave_master, ide->logical_unit_number);
+ break;
+ }
+ case DEVICE_PATH_SUB_TYPE_MSG_SCSI: {
+ struct efi_device_path_scsi *ide =
+ (struct efi_device_path_scsi *)dp;
+ s += sprintf(s, "Scsi(%u,%u)", ide->target_id,
+ ide->logical_unit_number);
+ break;
+ }
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,
+ s += sprintf(s, "USB(0x%x,0x%x)", udp->parent_port_number,
udp->usb_interface);
break;
}
case DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR: {
+ int i, n = sizeof(struct efi_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);
+ if (mdp->if_type <= 1)
+ n = 6;
+ s += sprintf(s, "MAC(");
+ for (i = 0; i < n; ++i)
+ s += sprintf(s, "%02x", mdp->mac.addr[i]);
+ s += sprintf(s, ",%u)", mdp->if_type);
break;
}
struct efi_device_path_usb_class *ucdp =
(struct efi_device_path_usb_class *)dp;
- s += sprintf(s, "/USBClass(%x,%x,%x,%x,%x)",
+ s += sprintf(s, "UsbClass(0x%x,0x%x,0x%x,0x%x,0x%x)",
ucdp->vendor_id, ucdp->product_id,
ucdp->device_class, ucdp->device_subclass,
ucdp->device_protocol);
break;
}
+ case DEVICE_PATH_SUB_TYPE_MSG_SATA: {
+ struct efi_device_path_sata *sdp =
+ (struct efi_device_path_sata *) dp;
+
+ s += sprintf(s, "Sata(0x%x,0x%x,0x%x)",
+ sdp->hba_port,
+ sdp->port_multiplier_port,
+ sdp->logical_unit_number);
+ break;
+ }
+ case DEVICE_PATH_SUB_TYPE_MSG_NVME: {
+ struct efi_device_path_nvme *ndp =
+ (struct efi_device_path_nvme *)dp;
+ u32 ns_id;
+ int i;
+
+ memcpy(&ns_id, &ndp->ns_id, sizeof(ns_id));
+ s += sprintf(s, "NVMe(0x%x,", ns_id);
+ for (i = 0; i < sizeof(ndp->eui64); ++i)
+ s += sprintf(s, "%s%02x", i ? "-" : "",
+ ndp->eui64[i]);
+ s += sprintf(s, ")");
+
+ 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";
+ "SD" : "eMMC";
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);
+ s += sprintf(s, "%s(%u)", typename, sddp->slot_number);
break;
}
default:
return s;
}
+/*
+ * Convert a media device path node to text.
+ *
+ * @s output buffer
+ * @dp device path node
+ * @return next unused buffer address
+ */
static char *dp_media(char *s, struct efi_device_path *dp)
{
switch (dp->sub_type) {
struct efi_device_path_hard_drive_path *hddp =
(struct efi_device_path_hard_drive_path *)dp;
void *sig = hddp->partition_signature;
+ u64 start;
+ u64 end;
+
+ /* Copy from packed structure to aligned memory */
+ memcpy(&start, &hddp->partition_start, sizeof(start));
+ memcpy(&end, &hddp->partition_end, sizeof(end));
switch (hddp->signature_type) {
- case SIG_TYPE_MBR:
- s += sprintf(s, "/HD(Part%d,Sig%08x)",
- hddp->partition_number,
- *(uint32_t *)sig);
+ case SIG_TYPE_MBR: {
+ u32 signature;
+
+ memcpy(&signature, sig, sizeof(signature));
+ s += sprintf(
+ s, "HD(%d,MBR,0x%08x,0x%llx,0x%llx)",
+ hddp->partition_number, signature, start, end);
break;
+ }
case SIG_TYPE_GUID:
- s += sprintf(s, "/HD(Part%d,Sig%pUl)",
- hddp->partition_number, sig);
+ s += sprintf(
+ s, "HD(%d,GPT,%pUl,0x%llx,0x%llx)",
+ hddp->partition_number, sig, start, end);
+ break;
default:
- s += sprintf(s, "/HD(Part%d,MBRType=%02x,SigType=%02x)",
- hddp->partition_number, hddp->partmap_type,
- hddp->signature_type);
+ s += sprintf(
+ s, "HD(%d,0x%02x,0,0x%llx,0x%llx)",
+ hddp->partition_number, hddp->partmap_type,
+ start, end);
+ break;
}
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);
+ s += sprintf(s, "CDROM(%u,0x%llx,0x%llx)", cddp->boot_entry,
+ cddp->partition_start, cddp->partition_size);
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);
+ if (slen > MAX_NODE_LEN - 2)
+ slen = MAX_NODE_LEN - 2;
+ s += sprintf(s, "%-.*ls", slen, fp->str);
break;
}
default:
return s;
}
-static uint16_t *efi_convert_device_node_to_text(
- struct efi_device_path *dp,
- bool display_only,
- bool allow_shortcuts)
+/*
+ * Converts a single node to a char string.
+ *
+ * @buffer output buffer
+ * @dp device path or node
+ * @return end of string
+ */
+static char *efi_convert_single_device_node_to_text(
+ char *buffer,
+ struct efi_device_path *dp)
{
- 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);
- }
+ char *str = buffer;
- dp = efi_dp_next(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;
+ case DEVICE_PATH_TYPE_END:
+ break;
+ default:
+ str = dp_unknown(str, dp);
}
- *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;
+ *str = '\0';
+ return str;
}
-/* 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(
+/*
+ * This function implements the ConvertDeviceNodeToText service of the
+ * EFI_DEVICE_PATH_TO_TEXT_PROTOCOL.
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * device_node device node to be converted
+ * display_only true if the shorter text representation shall be used
+ * allow_shortcuts true if shortcut forms may be used
+ * @return text representation of the device path
+ * NULL if out of memory of device_path is NULL
+ */
+static uint16_t EFIAPI *efi_convert_device_node_to_text(
struct efi_device_path *device_node,
bool display_only,
bool allow_shortcuts)
{
- uint16_t *buffer;
+ char str[MAX_NODE_LEN];
+ uint16_t *text = NULL;
EFI_ENTRY("%p, %d, %d", device_node, display_only, allow_shortcuts);
- buffer = efi_convert_device_node_to_text(device_node, display_only,
- allow_shortcuts);
+ if (!device_node)
+ goto out;
+ efi_convert_single_device_node_to_text(str, device_node);
+ text = efi_str_to_u16(str);
+
+out:
EFI_EXIT(EFI_SUCCESS);
- return buffer;
+ return text;
}
+/*
+ * This function implements the ConvertDevicePathToText service of the
+ * EFI_DEVICE_PATH_TO_TEXT_PROTOCOL.
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * device_path device path to be converted
+ * display_only true if the shorter text representation shall be used
+ * allow_shortcuts true if shortcut forms may be used
+ * @return text representation of the device path
+ * NULL if out of memory of device_path is NULL
+ */
static uint16_t EFIAPI *efi_convert_device_path_to_text(
struct efi_device_path *device_path,
bool display_only,
bool allow_shortcuts)
{
- uint16_t *buffer;
+ uint16_t *text = NULL;
+ char buffer[MAX_PATH_LEN];
+ char *str = buffer;
EFI_ENTRY("%p, %d, %d", device_path, display_only, allow_shortcuts);
- /*
- * Our device paths are all of depth one. So its is sufficient to
- * to convert the first node.
- */
- buffer = efi_convert_device_node_to_text(device_path, display_only,
- allow_shortcuts);
+ if (!device_path)
+ goto out;
+ while (device_path &&
+ str + MAX_NODE_LEN < buffer + MAX_PATH_LEN) {
+ *str++ = '/';
+ str = efi_convert_single_device_node_to_text(str, device_path);
+ device_path = efi_dp_next(device_path);
+ }
+ text = efi_str_to_u16(buffer);
+
+out:
EFI_EXIT(EFI_SUCCESS);
- return buffer;
+ return text;
+}
+
+/* helper for debug prints.. efi_free_pool() the result. */
+uint16_t *efi_dp_str(struct efi_device_path *dp)
+{
+ return EFI_CALL(efi_convert_device_path_to_text(dp, true, true));
}
const struct efi_device_path_to_text_protocol efi_device_path_to_text = {
- .convert_device_node_to_text = efi_convert_device_node_to_text_ext,
+ .convert_device_node_to_text = efi_convert_device_node_to_text,
.convert_device_path_to_text = efi_convert_device_path_to_text,
};
projects / oweals / u-boot.git / blobdiff