* (C) Copyright 2001
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <ide.h>
+#include <malloc.h>
#include <part.h>
+#include <ubifs_uboot.h>
#undef PART_DEBUG
#define PRINTF(fmt,args...)
#endif
-#if (defined(CONFIG_CMD_IDE) || \
- defined(CONFIG_CMD_SCSI) || \
- defined(CONFIG_CMD_USB) || \
- defined(CONFIG_MMC) || \
- defined(CONFIG_SYSTEMACE) )
-
struct block_drvr {
char *name;
block_dev_desc_t* (*get_dev)(int dev);
+ int (*select_hwpart)(int dev_num, int hwpart);
};
static const struct block_drvr block_drvr[] = {
#if defined(CONFIG_CMD_IDE)
{ .name = "ide", .get_dev = ide_get_dev, },
#endif
+#if defined(CONFIG_CMD_SATA)
+ {.name = "sata", .get_dev = sata_get_dev, },
+#endif
#if defined(CONFIG_CMD_SCSI)
{ .name = "scsi", .get_dev = scsi_get_dev, },
#endif
{ .name = "usb", .get_dev = usb_stor_get_dev, },
#endif
#if defined(CONFIG_MMC)
- { .name = "mmc", .get_dev = mmc_get_dev, },
+ {
+ .name = "mmc",
+ .get_dev = mmc_get_dev,
+ .select_hwpart = mmc_select_hwpart,
+ },
#endif
#if defined(CONFIG_SYSTEMACE)
{ .name = "ace", .get_dev = systemace_get_dev, },
+#endif
+#if defined(CONFIG_SANDBOX)
+ { .name = "host", .get_dev = host_get_dev, },
#endif
{ },
};
DECLARE_GLOBAL_DATA_PTR;
-block_dev_desc_t *get_dev(char* ifname, int dev)
+#ifdef HAVE_BLOCK_DEVICE
+static block_dev_desc_t *get_dev_hwpart(const char *ifname, int dev, int hwpart)
{
const struct block_drvr *drvr = block_drvr;
block_dev_desc_t* (*reloc_get_dev)(int dev);
+ int (*select_hwpart)(int dev_num, int hwpart);
+ char *name;
+ int ret;
+ if (!ifname)
+ return NULL;
+
+ name = drvr->name;
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+ name += gd->reloc_off;
+#endif
while (drvr->name) {
- reloc_get_dev = drvr->get_dev + gd->reloc_off;
- if (strncmp(ifname, drvr->name, strlen(drvr->name)) == 0)
- return reloc_get_dev(dev);
+ name = drvr->name;
+ reloc_get_dev = drvr->get_dev;
+ select_hwpart = drvr->select_hwpart;
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+ name += gd->reloc_off;
+ reloc_get_dev += gd->reloc_off;
+ if (select_hwpart)
+ select_hwpart += gd->reloc_off;
+#endif
+ if (strncmp(ifname, name, strlen(name)) == 0) {
+ block_dev_desc_t *dev_desc = reloc_get_dev(dev);
+ if (!dev_desc)
+ return NULL;
+ if (hwpart == 0 && !select_hwpart)
+ return dev_desc;
+ if (!select_hwpart)
+ return NULL;
+ ret = select_hwpart(dev_desc->dev, hwpart);
+ if (ret < 0)
+ return NULL;
+ return dev_desc;
+ }
drvr++;
}
return NULL;
}
+
+block_dev_desc_t *get_dev(const char *ifname, int dev)
+{
+ return get_dev_hwpart(ifname, dev, 0);
+}
#else
-block_dev_desc_t *get_dev(char* ifname, int dev)
+block_dev_desc_t *get_dev_hwpart(const char *ifname, int dev, int hwpart)
+{
+ return NULL;
+}
+
+block_dev_desc_t *get_dev(const char *ifname, int dev)
{
return NULL;
}
#endif
-#if (defined(CONFIG_CMD_IDE) || \
- defined(CONFIG_CMD_SCSI) || \
- defined(CONFIG_CMD_USB) || \
- defined(CONFIG_MMC) || \
- defined(CONFIG_SYSTEMACE) )
+#ifdef HAVE_BLOCK_DEVICE
/* ------------------------------------------------------------------------- */
/*
* reports device info to the user
*/
-void dev_print (block_dev_desc_t *dev_desc)
-{
+
#ifdef CONFIG_LBA48
- uint64_t lba512; /* number of blocks if 512bytes block size */
+typedef uint64_t lba512_t;
#else
- lbaint_t lba512;
+typedef lbaint_t lba512_t;
#endif
- if (dev_desc->type==DEV_TYPE_UNKNOWN) {
+/*
+ * Overflowless variant of (block_count * mul_by / div_by)
+ * when div_by > mul_by
+ */
+static lba512_t lba512_muldiv(lba512_t block_count, lba512_t mul_by, lba512_t div_by)
+{
+ lba512_t bc_quot, bc_rem;
+
+ /* x * m / d == x / d * m + (x % d) * m / d */
+ bc_quot = block_count / div_by;
+ bc_rem = block_count - div_by * bc_quot;
+ return bc_quot * mul_by + (bc_rem * mul_by) / div_by;
+}
+
+void dev_print (block_dev_desc_t *dev_desc)
+{
+ lba512_t lba512; /* number of blocks if 512bytes block size */
+
+ if (dev_desc->type == DEV_TYPE_UNKNOWN) {
puts ("not available\n");
return;
}
- if (dev_desc->if_type==IF_TYPE_SCSI) {
- printf ("(%d:%d) ", dev_desc->target,dev_desc->lun);
- }
- if (dev_desc->if_type==IF_TYPE_IDE) {
+
+ switch (dev_desc->if_type) {
+ case IF_TYPE_SCSI:
+ printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
+ dev_desc->target,dev_desc->lun,
+ dev_desc->vendor,
+ dev_desc->product,
+ dev_desc->revision);
+ break;
+ case IF_TYPE_ATAPI:
+ case IF_TYPE_IDE:
+ case IF_TYPE_SATA:
printf ("Model: %s Firm: %s Ser#: %s\n",
dev_desc->vendor,
dev_desc->revision,
dev_desc->product);
- } else {
- printf ("Vendor: %s Prod.: %s Rev: %s\n",
+ break;
+ case IF_TYPE_SD:
+ case IF_TYPE_MMC:
+ case IF_TYPE_USB:
+ printf ("Vendor: %s Rev: %s Prod: %s\n",
dev_desc->vendor,
- dev_desc->product,
- dev_desc->revision);
+ dev_desc->revision,
+ dev_desc->product);
+ break;
+ case IF_TYPE_DOC:
+ puts("device type DOC\n");
+ return;
+ case IF_TYPE_UNKNOWN:
+ puts("device type unknown\n");
+ return;
+ default:
+ printf("Unhandled device type: %i\n", dev_desc->if_type);
+ return;
}
puts (" Type: ");
if (dev_desc->removable)
puts ("Removable ");
switch (dev_desc->type & 0x1F) {
- case DEV_TYPE_HARDDISK: puts ("Hard Disk");
- break;
- case DEV_TYPE_CDROM: puts ("CD ROM");
- break;
- case DEV_TYPE_OPDISK: puts ("Optical Device");
- break;
- case DEV_TYPE_TAPE: puts ("Tape");
- break;
- default: printf ("# %02X #", dev_desc->type & 0x1F);
- break;
+ case DEV_TYPE_HARDDISK:
+ puts ("Hard Disk");
+ break;
+ case DEV_TYPE_CDROM:
+ puts ("CD ROM");
+ break;
+ case DEV_TYPE_OPDISK:
+ puts ("Optical Device");
+ break;
+ case DEV_TYPE_TAPE:
+ puts ("Tape");
+ break;
+ default:
+ printf ("# %02X #", dev_desc->type & 0x1F);
+ break;
}
puts ("\n");
- if ((dev_desc->lba * dev_desc->blksz)>0L) {
+ if (dev_desc->lba > 0L && dev_desc->blksz > 0L) {
ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem;
lbaint_t lba;
lba = dev_desc->lba;
lba512 = (lba * (dev_desc->blksz/512));
- mb = (10 * lba512) / 2048; /* 2048 = (1024 * 1024) / 512 MB */
/* round to 1 digit */
+ /* 2048 = (1024 * 1024) / 512 MB */
+ mb = lba512_muldiv(lba512, 10, 2048);
+
mb_quot = mb / 10;
mb_rem = mb - (10 * mb_quot);
if (dev_desc->lba48)
printf (" Supports 48-bit addressing\n");
#endif
-#if defined(CFG_64BIT_LBA) && defined(CFG_64BIT_VSPRINTF)
- printf (" Capacity: %ld.%ld MB = %ld.%ld GB (%qd x %ld)\n",
+#if defined(CONFIG_SYS_64BIT_LBA)
+ printf (" Capacity: %ld.%ld MB = %ld.%ld GB (%Ld x %ld)\n",
mb_quot, mb_rem,
gb_quot, gb_rem,
lba,
puts (" Capacity: not available\n");
}
}
-#endif /* CFG_CMD_IDE || CFG_CMD_SCSI || CFG_CMD_USB || CONFIG_MMC */
-
-#if (defined(CONFIG_CMD_IDE) || \
- defined(CONFIG_CMD_SCSI) || \
- defined(CONFIG_CMD_USB) || \
- defined(CONFIG_MMC) || \
- (defined(CONFIG_MMC) && defined(CONFIG_LPC2292)) || \
- defined(CONFIG_SYSTEMACE) )
+#endif
-#if defined(CONFIG_MAC_PARTITION) || \
- defined(CONFIG_DOS_PARTITION) || \
- defined(CONFIG_ISO_PARTITION) || \
- defined(CONFIG_AMIGA_PARTITION)
+#ifdef HAVE_BLOCK_DEVICE
-void init_part (block_dev_desc_t * dev_desc)
+void init_part(block_dev_desc_t *dev_desc)
{
#ifdef CONFIG_ISO_PARTITION
if (test_part_iso(dev_desc) == 0) {
}
#endif
+/* must be placed before DOS partition detection */
+#ifdef CONFIG_EFI_PARTITION
+ if (test_part_efi(dev_desc) == 0) {
+ dev_desc->part_type = PART_TYPE_EFI;
+ return;
+ }
+#endif
+
#ifdef CONFIG_DOS_PARTITION
if (test_part_dos(dev_desc) == 0) {
dev_desc->part_type = PART_TYPE_DOS;
return;
}
#endif
+ dev_desc->part_type = PART_TYPE_UNKNOWN;
}
-int get_partition_info (block_dev_desc_t *dev_desc, int part
- , disk_partition_t *info)
+#if defined(CONFIG_MAC_PARTITION) || \
+ defined(CONFIG_DOS_PARTITION) || \
+ defined(CONFIG_ISO_PARTITION) || \
+ defined(CONFIG_AMIGA_PARTITION) || \
+ defined(CONFIG_EFI_PARTITION)
+
+static void print_part_header(const char *type, block_dev_desc_t *dev_desc)
{
- switch (dev_desc->part_type) {
-#ifdef CONFIG_MAC_PARTITION
- case PART_TYPE_MAC:
- if (get_partition_info_mac(dev_desc,part,info) == 0) {
- PRINTF ("## Valid MAC partition found ##\n");
- return (0);
- }
+ puts ("\nPartition Map for ");
+ switch (dev_desc->if_type) {
+ case IF_TYPE_IDE:
+ puts ("IDE");
break;
-#endif
-
-#ifdef CONFIG_DOS_PARTITION
- case PART_TYPE_DOS:
- if (get_partition_info_dos(dev_desc,part,info) == 0) {
- PRINTF ("## Valid DOS partition found ##\n");
- return (0);
- }
+ case IF_TYPE_SATA:
+ puts ("SATA");
break;
-#endif
-
-#ifdef CONFIG_ISO_PARTITION
- case PART_TYPE_ISO:
- if (get_partition_info_iso(dev_desc,part,info) == 0) {
- PRINTF ("## Valid ISO boot partition found ##\n");
- return (0);
- }
+ case IF_TYPE_SCSI:
+ puts ("SCSI");
+ break;
+ case IF_TYPE_ATAPI:
+ puts ("ATAPI");
+ break;
+ case IF_TYPE_USB:
+ puts ("USB");
+ break;
+ case IF_TYPE_DOC:
+ puts ("DOC");
+ break;
+ case IF_TYPE_MMC:
+ puts ("MMC");
+ break;
+ case IF_TYPE_HOST:
+ puts("HOST");
break;
-#endif
-
-#ifdef CONFIG_AMIGA_PARTITION
- case PART_TYPE_AMIGA:
- if (get_partition_info_amiga(dev_desc, part, info) == 0)
- {
- PRINTF ("## Valid Amiga partition found ##\n");
- return (0);
- }
- break;
-#endif
default:
+ puts ("UNKNOWN");
break;
}
- return (-1);
-}
-
-static void print_part_header (const char *type, block_dev_desc_t * dev_desc)
-{
- puts ("\nPartition Map for ");
- switch (dev_desc->if_type) {
- case IF_TYPE_IDE: puts ("IDE");
- break;
- case IF_TYPE_SCSI: puts ("SCSI");
- break;
- case IF_TYPE_ATAPI: puts ("ATAPI");
- break;
- case IF_TYPE_USB: puts ("USB");
- break;
- case IF_TYPE_DOC: puts ("DOC");
- break;
- default: puts ("UNKNOWN");
- break;
- }
printf (" device %d -- Partition Type: %s\n\n",
dev_desc->dev, type);
}
-void print_part (block_dev_desc_t * dev_desc)
+#endif /* any CONFIG_..._PARTITION */
+
+void print_part(block_dev_desc_t * dev_desc)
{
switch (dev_desc->part_type) {
print_part_amiga (dev_desc);
return;
#endif
+
+#ifdef CONFIG_EFI_PARTITION
+ case PART_TYPE_EFI:
+ PRINTF ("## Testing for valid EFI partition ##\n");
+ print_part_header ("EFI", dev_desc);
+ print_part_efi (dev_desc);
+ return;
+#endif
}
puts ("## Unknown partition table\n");
}
+#endif /* HAVE_BLOCK_DEVICE */
-#else /* neither MAC nor DOS nor ISO partition configured */
-# error neither CONFIG_MAC_PARTITION nor CONFIG_DOS_PARTITION
-# error nor CONFIG_ISO_PARTITION configured!
+int get_partition_info(block_dev_desc_t *dev_desc, int part,
+ disk_partition_t *info)
+{
+#ifdef HAVE_BLOCK_DEVICE
+
+#ifdef CONFIG_PARTITION_UUIDS
+ /* The common case is no UUID support */
+ info->uuid[0] = 0;
+#endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+ info->type_guid[0] = 0;
#endif
+ switch (dev_desc->part_type) {
+#ifdef CONFIG_MAC_PARTITION
+ case PART_TYPE_MAC:
+ if (get_partition_info_mac(dev_desc, part, info) == 0) {
+ PRINTF("## Valid MAC partition found ##\n");
+ return 0;
+ }
+ break;
#endif
+
+#ifdef CONFIG_DOS_PARTITION
+ case PART_TYPE_DOS:
+ if (get_partition_info_dos(dev_desc, part, info) == 0) {
+ PRINTF("## Valid DOS partition found ##\n");
+ return 0;
+ }
+ break;
+#endif
+
+#ifdef CONFIG_ISO_PARTITION
+ case PART_TYPE_ISO:
+ if (get_partition_info_iso(dev_desc, part, info) == 0) {
+ PRINTF("## Valid ISO boot partition found ##\n");
+ return 0;
+ }
+ break;
+#endif
+
+#ifdef CONFIG_AMIGA_PARTITION
+ case PART_TYPE_AMIGA:
+ if (get_partition_info_amiga(dev_desc, part, info) == 0) {
+ PRINTF("## Valid Amiga partition found ##\n");
+ return 0;
+ }
+ break;
+#endif
+
+#ifdef CONFIG_EFI_PARTITION
+ case PART_TYPE_EFI:
+ if (get_partition_info_efi(dev_desc, part, info) == 0) {
+ PRINTF("## Valid EFI partition found ##\n");
+ return 0;
+ }
+ break;
+#endif
+ default:
+ break;
+ }
+#endif /* HAVE_BLOCK_DEVICE */
+
+ return -1;
+}
+
+int get_device(const char *ifname, const char *dev_hwpart_str,
+ block_dev_desc_t **dev_desc)
+{
+ char *ep;
+ char *dup_str = NULL;
+ const char *dev_str, *hwpart_str;
+ int dev, hwpart;
+
+ hwpart_str = strchr(dev_hwpart_str, '.');
+ if (hwpart_str) {
+ dup_str = strdup(dev_hwpart_str);
+ dup_str[hwpart_str - dev_hwpart_str] = 0;
+ dev_str = dup_str;
+ hwpart_str++;
+ } else {
+ dev_str = dev_hwpart_str;
+ hwpart = 0;
+ }
+
+ dev = simple_strtoul(dev_str, &ep, 16);
+ if (*ep) {
+ printf("** Bad device specification %s %s **\n",
+ ifname, dev_str);
+ dev = -1;
+ goto cleanup;
+ }
+
+ if (hwpart_str) {
+ hwpart = simple_strtoul(hwpart_str, &ep, 16);
+ if (*ep) {
+ printf("** Bad HW partition specification %s %s **\n",
+ ifname, hwpart_str);
+ dev = -1;
+ goto cleanup;
+ }
+ }
+
+ *dev_desc = get_dev_hwpart(ifname, dev, hwpart);
+ if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
+ printf("** Bad device %s %s **\n", ifname, dev_hwpart_str);
+ dev = -1;
+ goto cleanup;
+ }
+
+cleanup:
+ free(dup_str);
+ return dev;
+}
+
+#define PART_UNSPECIFIED -2
+#define PART_AUTO -1
+#define MAX_SEARCH_PARTITIONS 16
+int get_device_and_partition(const char *ifname, const char *dev_part_str,
+ block_dev_desc_t **dev_desc,
+ disk_partition_t *info, int allow_whole_dev)
+{
+ int ret = -1;
+ const char *part_str;
+ char *dup_str = NULL;
+ const char *dev_str;
+ int dev;
+ char *ep;
+ int p;
+ int part;
+ disk_partition_t tmpinfo;
+
+#if defined CONFIG_SANDBOX && defined CONFIG_CMD_UBIFS
+#error Only one of CONFIG_SANDBOX and CONFIG_CMD_UBIFS may be selected
+#endif
+
+#ifdef CONFIG_SANDBOX
+ /*
+ * Special-case a pseudo block device "hostfs", to allow access to the
+ * host's own filesystem.
+ */
+ if (0 == strcmp(ifname, "hostfs")) {
+ *dev_desc = NULL;
+ info->start = 0;
+ info->size = 0;
+ info->blksz = 0;
+ info->bootable = 0;
+ strcpy((char *)info->type, BOOT_PART_TYPE);
+ strcpy((char *)info->name, "Sandbox host");
+#ifdef CONFIG_PARTITION_UUIDS
+ info->uuid[0] = 0;
+#endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+ info->type_guid[0] = 0;
+#endif
+
+ return 0;
+ }
+#endif
+
+#ifdef CONFIG_CMD_UBIFS
+ /*
+ * Special-case ubi, ubi goes through a mtd, rathen then through
+ * a regular block device.
+ */
+ if (0 == strcmp(ifname, "ubi")) {
+ if (!ubifs_is_mounted()) {
+ printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
+ return -1;
+ }
+
+ *dev_desc = NULL;
+ memset(info, 0, sizeof(*info));
+ strcpy((char *)info->type, BOOT_PART_TYPE);
+ strcpy((char *)info->name, "UBI");
+#ifdef CONFIG_PARTITION_UUIDS
+ info->uuid[0] = 0;
+#endif
+ return 0;
+ }
+#endif
+
+ /* If no dev_part_str, use bootdevice environment variable */
+ if (!dev_part_str || !strlen(dev_part_str) ||
+ !strcmp(dev_part_str, "-"))
+ dev_part_str = getenv("bootdevice");
+
+ /* If still no dev_part_str, it's an error */
+ if (!dev_part_str) {
+ printf("** No device specified **\n");
+ goto cleanup;
+ }
+
+ /* Separate device and partition ID specification */
+ part_str = strchr(dev_part_str, ':');
+ if (part_str) {
+ dup_str = strdup(dev_part_str);
+ dup_str[part_str - dev_part_str] = 0;
+ dev_str = dup_str;
+ part_str++;
+ } else {
+ dev_str = dev_part_str;
+ }
+
+ /* Look up the device */
+ dev = get_device(ifname, dev_str, dev_desc);
+ if (dev < 0)
+ goto cleanup;
+
+ /* Convert partition ID string to number */
+ if (!part_str || !*part_str) {
+ part = PART_UNSPECIFIED;
+ } else if (!strcmp(part_str, "auto")) {
+ part = PART_AUTO;
+ } else {
+ /* Something specified -> use exactly that */
+ part = (int)simple_strtoul(part_str, &ep, 16);
+ /*
+ * Less than whole string converted,
+ * or request for whole device, but caller requires partition.
+ */
+ if (*ep || (part == 0 && !allow_whole_dev)) {
+ printf("** Bad partition specification %s %s **\n",
+ ifname, dev_part_str);
+ goto cleanup;
+ }
+ }
+
+ /*
+ * No partition table on device,
+ * or user requested partition 0 (entire device).
+ */
+ if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) ||
+ (part == 0)) {
+ if (!(*dev_desc)->lba) {
+ printf("** Bad device size - %s %s **\n", ifname,
+ dev_str);
+ goto cleanup;
+ }
+
+ /*
+ * If user specified a partition ID other than 0,
+ * or the calling command only accepts partitions,
+ * it's an error.
+ */
+ if ((part > 0) || (!allow_whole_dev)) {
+ printf("** No partition table - %s %s **\n", ifname,
+ dev_str);
+ goto cleanup;
+ }
+
+ (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
+
+ info->start = 0;
+ info->size = (*dev_desc)->lba;
+ info->blksz = (*dev_desc)->blksz;
+ info->bootable = 0;
+ strcpy((char *)info->type, BOOT_PART_TYPE);
+ strcpy((char *)info->name, "Whole Disk");
+#ifdef CONFIG_PARTITION_UUIDS
+ info->uuid[0] = 0;
+#endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+ info->type_guid[0] = 0;
+#endif
+
+ ret = 0;
+ goto cleanup;
+ }
+
+ /*
+ * Now there's known to be a partition table,
+ * not specifying a partition means to pick partition 1.
+ */
+ if (part == PART_UNSPECIFIED)
+ part = 1;
+
+ /*
+ * If user didn't specify a partition number, or did specify something
+ * other than "auto", use that partition number directly.
+ */
+ if (part != PART_AUTO) {
+ ret = get_partition_info(*dev_desc, part, info);
+ if (ret) {
+ printf("** Invalid partition %d **\n", part);
+ goto cleanup;
+ }
+ } else {
+ /*
+ * Find the first bootable partition.
+ * If none are bootable, fall back to the first valid partition.
+ */
+ part = 0;
+ for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
+ ret = get_partition_info(*dev_desc, p, info);
+ if (ret)
+ continue;
+
+ /*
+ * First valid partition, or new better partition?
+ * If so, save partition ID.
+ */
+ if (!part || info->bootable)
+ part = p;
+
+ /* Best possible partition? Stop searching. */
+ if (info->bootable)
+ break;
+
+ /*
+ * We now need to search further for best possible.
+ * If we what we just queried was the best so far,
+ * save the info since we over-write it next loop.
+ */
+ if (part == p)
+ tmpinfo = *info;
+ }
+ /* If we found any acceptable partition */
+ if (part) {
+ /*
+ * If we searched all possible partition IDs,
+ * return the first valid partition we found.
+ */
+ if (p == MAX_SEARCH_PARTITIONS + 1)
+ *info = tmpinfo;
+ } else {
+ printf("** No valid partitions found **\n");
+ ret = -1;
+ goto cleanup;
+ }
+ }
+ if (strncmp((char *)info->type, BOOT_PART_TYPE, sizeof(info->type)) != 0) {
+ printf("** Invalid partition type \"%.32s\""
+ " (expect \"" BOOT_PART_TYPE "\")\n",
+ info->type);
+ ret = -1;
+ goto cleanup;
+ }
+
+ (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
+
+ ret = part;
+ goto cleanup;
+
+cleanup:
+ free(dup_str);
+ return ret;
+}