arm: bcmcygnus: Enable Ethernet support

[karo-tx-uboot.git] / disk / part_dos.c

diff --git a/disk/part_dos.c b/disk/part_dos.c
index 3fe901ba1bdc974127ced2a382274890011e02b5..cf1a36ebb826699e9b391f6d68a9fad0c5806430 100644 (file)
--- a/disk/part_dos.c
+++ b/disk/part_dos.c
@@ -3,23 +3,7 @@
  * Raymond Lo, lo@routefree.com
  * 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+
  */
 
 /*
@@ -35,12 +19,9 @@
 #include <ide.h>
 #include "part_dos.h"
 
-#if defined(CONFIG_CMD_IDE) || \
-    defined(CONFIG_CMD_SATA) || \
-    defined(CONFIG_CMD_SCSI) || \
-    defined(CONFIG_CMD_USB) || \
-    defined(CONFIG_MMC) || \
-    defined(CONFIG_SYSTEMACE)
+#ifdef HAVE_BLOCK_DEVICE
+
+#define DOS_PART_DEFAULT_SECTOR 512
 
 /* Convert char[4] in little endian format to the host format integer
  */
@@ -79,13 +60,26 @@ static void print_one_part(dos_partition_t *p, int ext_part_sector,
 
 static int test_block_type(unsigned char *buffer)
 {
+       int slot;
+       struct dos_partition *p;
+
        if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
            (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
                return (-1);
        } /* no DOS Signature at all */
-       if (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0 ||
-           strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) {
-               return DOS_PBR; /* is PBR */
+       p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
+       for (slot = 0; slot < 3; slot++) {
+               if (p->boot_ind != 0 && p->boot_ind != 0x80) {
+                       if (!slot &&
+                           (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
+                                    "FAT", 3) == 0 ||
+                            strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
+                                    "FAT32", 5) == 0)) {
+                               return DOS_PBR; /* is PBR */
+                       } else {
+                               return -1;
+                       }
+               }
        }
        return DOS_MBR;     /* Is MBR */
 }
@@ -176,6 +170,7 @@ static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part
        ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
        dos_partition_t *pt;
        int i;
+       int dos_type;
 
        if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
                printf ("** Can't read partition table on %d:%d **\n",
@@ -206,9 +201,10 @@ static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part
                    (pt->sys_ind != 0) &&
                    (part_num == which_part) &&
                    (is_extended(pt->sys_ind) == 0)) {
-                       info->blksz = 512;
-                       info->start = ext_part_sector + le32_to_int (pt->start4);
-                       info->size  = le32_to_int (pt->size4);
+                       info->blksz = DOS_PART_DEFAULT_SECTOR;
+                       info->start = (lbaint_t)(ext_part_sector +
+                                       le32_to_int(pt->start4));
+                       info->size  = (lbaint_t)le32_to_int(pt->size4);
                        switch(dev_desc->if_type) {
                                case IF_TYPE_IDE:
                                case IF_TYPE_SATA:
@@ -260,6 +256,22 @@ static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part
                                 part_num, which_part, info, disksig);
                }
        }
+
+       /* Check for DOS PBR if no partition is found */
+       dos_type = test_block_type(buffer);
+
+       if (dos_type == DOS_PBR) {
+               info->start = 0;
+               info->size = dev_desc->lba;
+               info->blksz = DOS_PART_DEFAULT_SECTOR;
+               info->bootable = 0;
+               sprintf ((char *)info->type, "U-Boot");
+#ifdef CONFIG_PARTITION_UUIDS
+               info->uuid[0] = 0;
+#endif
+               return 0;
+       }
+
        return -1;
 }