| /* |
| * (C) Copyright 2001 |
| * 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 |
| */ |
| |
| /* |
| * Support for harddisk partitions. |
| * |
| * To be compatible with LinuxPPC and Apple we use the standard Apple |
| * SCSI disk partitioning scheme. For more information see: |
| * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92 |
| */ |
| |
| #include <common.h> |
| #include <command.h> |
| #include <ide.h> |
| #include "part_dos.h" |
| |
| #if defined(CONFIG_CMD_IDE) || \ |
| defined(CONFIG_CMD_MG_DISK) || \ |
| defined(CONFIG_CMD_SATA) || \ |
| defined(CONFIG_CMD_SCSI) || \ |
| defined(CONFIG_CMD_USB) || \ |
| defined(CONFIG_MMC) || \ |
| defined(CONFIG_SYSTEMACE) |
| |
| /* Convert char[4] in little endian format to the host format integer |
| */ |
| static inline int le32_to_int(unsigned char *le32) |
| { |
| return ((le32[3] << 24) + |
| (le32[2] << 16) + |
| (le32[1] << 8) + |
| le32[0] |
| ); |
| } |
| |
| static inline int is_extended(int part_type) |
| { |
| return (part_type == 0x5 || |
| part_type == 0xf || |
| part_type == 0x85); |
| } |
| |
| static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num) |
| { |
| int lba_start = ext_part_sector + le32_to_int (p->start4); |
| int lba_size = le32_to_int (p->size4); |
| |
| printf ("%5d\t\t%10d\t%10d\t%2x%s\n", |
| part_num, lba_start, lba_size, p->sys_ind, |
| (is_extended (p->sys_ind) ? " Extd" : "")); |
| } |
| |
| static int test_block_type(unsigned char *buffer) |
| { |
| 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 */ |
| } |
| return DOS_MBR; /* Is MBR */ |
| } |
| |
| |
| int test_part_dos (block_dev_desc_t *dev_desc) |
| { |
| unsigned char buffer[dev_desc->blksz]; |
| |
| if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) || |
| (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) || |
| (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) { |
| return (-1); |
| } |
| return (0); |
| } |
| |
| /* Print a partition that is relative to its Extended partition table |
| */ |
| static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative, |
| int part_num) |
| { |
| unsigned char buffer[dev_desc->blksz]; |
| dos_partition_t *pt; |
| int i; |
| |
| 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", |
| dev_desc->dev, ext_part_sector); |
| return; |
| } |
| i=test_block_type(buffer); |
| if(i==-1) { |
| printf ("bad MBR sector signature 0x%02x%02x\n", |
| buffer[DOS_PART_MAGIC_OFFSET], |
| buffer[DOS_PART_MAGIC_OFFSET + 1]); |
| return; |
| } |
| if(i==DOS_PBR) { |
| printf(" 1\t\t 0\t%10lld\t%2x\n", |
| (uint64_t)dev_desc->lba, |
| buffer[DOS_PBR_MEDIA_TYPE_OFFSET]); |
| return; |
| } |
| /* Print all primary/logical partitions */ |
| pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); |
| for (i = 0; i < 4; i++, pt++) { |
| /* |
| * fdisk does not show the extended partitions that |
| * are not in the MBR |
| */ |
| |
| if ((pt->sys_ind != 0) && |
| (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) { |
| print_one_part (pt, ext_part_sector, part_num); |
| } |
| |
| /* Reverse engr the fdisk part# assignment rule! */ |
| if ((ext_part_sector == 0) || |
| (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) { |
| part_num++; |
| } |
| } |
| |
| /* Follows the extended partitions */ |
| pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); |
| for (i = 0; i < 4; i++, pt++) { |
| if (is_extended (pt->sys_ind)) { |
| int lba_start = le32_to_int (pt->start4) + relative; |
| |
| print_partition_extended (dev_desc, lba_start, |
| ext_part_sector == 0 ? lba_start |
| : relative, |
| part_num); |
| } |
| } |
| |
| return; |
| } |
| |
| |
| /* Print a partition that is relative to its Extended partition table |
| */ |
| static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector, |
| int relative, int part_num, |
| int which_part, disk_partition_t *info) |
| { |
| unsigned char buffer[dev_desc->blksz]; |
| dos_partition_t *pt; |
| int i; |
| |
| 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", |
| dev_desc->dev, ext_part_sector); |
| return -1; |
| } |
| if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 || |
| buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) { |
| printf ("bad MBR sector signature 0x%02x%02x\n", |
| buffer[DOS_PART_MAGIC_OFFSET], |
| buffer[DOS_PART_MAGIC_OFFSET + 1]); |
| return -1; |
| } |
| |
| /* Print all primary/logical partitions */ |
| pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); |
| for (i = 0; i < 4; i++, pt++) { |
| /* |
| * fdisk does not show the extended partitions that |
| * are not in the MBR |
| */ |
| if (((pt->boot_ind & ~0x80) == 0) && |
| (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); |
| switch(dev_desc->if_type) { |
| case IF_TYPE_IDE: |
| case IF_TYPE_SATA: |
| case IF_TYPE_ATAPI: |
| sprintf ((char *)info->name, "hd%c%d", |
| 'a' + dev_desc->dev, part_num); |
| break; |
| case IF_TYPE_SCSI: |
| sprintf ((char *)info->name, "sd%c%d", |
| 'a' + dev_desc->dev, part_num); |
| break; |
| case IF_TYPE_USB: |
| sprintf ((char *)info->name, "usbd%c%d", |
| 'a' + dev_desc->dev, part_num); |
| break; |
| case IF_TYPE_DOC: |
| sprintf ((char *)info->name, "docd%c%d", |
| 'a' + dev_desc->dev, part_num); |
| break; |
| default: |
| sprintf ((char *)info->name, "xx%c%d", |
| 'a' + dev_desc->dev, part_num); |
| break; |
| } |
| /* sprintf(info->type, "%d, pt->sys_ind); */ |
| sprintf ((char *)info->type, "U-Boot"); |
| return 0; |
| } |
| |
| /* Reverse engr the fdisk part# assignment rule! */ |
| if ((ext_part_sector == 0) || |
| (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) { |
| part_num++; |
| } |
| } |
| |
| /* Follows the extended partitions */ |
| pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); |
| for (i = 0; i < 4; i++, pt++) { |
| if (is_extended (pt->sys_ind)) { |
| int lba_start = le32_to_int (pt->start4) + relative; |
| |
| return get_partition_info_extended (dev_desc, lba_start, |
| ext_part_sector == 0 ? lba_start : relative, |
| part_num, which_part, info); |
| } |
| } |
| return -1; |
| } |
| |
| void print_part_dos (block_dev_desc_t *dev_desc) |
| { |
| printf ("Partition Start Sector Num Sectors Type\n"); |
| print_partition_extended (dev_desc, 0, 0, 1); |
| } |
| |
| int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info) |
| { |
| return get_partition_info_extended (dev_desc, 0, 0, 1, part, info); |
| } |
| |
| |
| #endif |