/* * (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 ((CONFIG_COMMANDS & CFG_CMD_IDE) || \ (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ (CONFIG_COMMANDS & CFG_CMD_USB) || \ defined(CONFIG_MMC) || \ defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_DOS_PARTITION) /* 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(&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0) return DOS_PBR; /* is PBR */ return DOS_MBR; /* Is MBR */ } int test_part_dos (block_dev_desc_t *dev_desc) { unsigned char buffer[DEFAULT_SECTOR_SIZE]; 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[DEFAULT_SECTOR_SIZE]; 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%10ld\t%2x\n", 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[DEFAULT_SECTOR_SIZE]; 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->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_ATAPI: sprintf (info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num); break; case IF_TYPE_SCSI: sprintf (info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num); break; case IF_TYPE_USB: sprintf (info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num); break; case IF_TYPE_DOC: sprintf (info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num); break; default: sprintf (info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num); break; } /* sprintf(info->type, "%d, pt->sys_ind); */ sprintf (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 /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */