mirror of
https://github.com/smaeul/u-boot.git
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252 lines
7.2 KiB
C
252 lines
7.2 KiB
C
/*
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* (C) Copyright 2001
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* Raymond Lo, lo@routefree.com
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Support for harddisk partitions.
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*
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* To be compatible with LinuxPPC and Apple we use the standard Apple
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* SCSI disk partitioning scheme. For more information see:
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* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
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*/
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#include <common.h>
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#include <command.h>
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#include <ide.h>
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#include "part_dos.h"
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#if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \
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(CONFIG_COMMANDS & CFG_CMD_SCSI) || \
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(CONFIG_COMMANDS & CFG_CMD_USB) || \
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defined(CONFIG_MMC) || \
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defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_DOS_PARTITION)
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/* Convert char[4] in little endian format to the host format integer
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*/
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static inline int le32_to_int(unsigned char *le32)
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{
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return ((le32[3] << 24) +
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(le32[2] << 16) +
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(le32[1] << 8) +
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le32[0]
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);
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}
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static inline int is_extended(int part_type)
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{
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return (part_type == 0x5 ||
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part_type == 0xf ||
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part_type == 0x85);
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}
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static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
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{
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int lba_start = ext_part_sector + le32_to_int (p->start4);
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int lba_size = le32_to_int (p->size4);
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printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
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part_num, lba_start, lba_size, p->sys_ind,
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(is_extended (p->sys_ind) ? " Extd" : ""));
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}
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static int test_block_type(unsigned char *buffer)
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{
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if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
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(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
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return (-1);
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} /* no DOS Signature at all */
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if(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0)
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return DOS_PBR; /* is PBR */
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return DOS_MBR; /* Is MBR */
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}
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int test_part_dos (block_dev_desc_t *dev_desc)
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{
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unsigned char buffer[DEFAULT_SECTOR_SIZE];
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if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
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(buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
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(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
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return (-1);
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}
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return (0);
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}
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/* Print a partition that is relative to its Extended partition table
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*/
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static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
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int part_num)
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{
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unsigned char buffer[DEFAULT_SECTOR_SIZE];
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dos_partition_t *pt;
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int i;
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if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
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printf ("** Can't read partition table on %d:%d **\n",
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dev_desc->dev, ext_part_sector);
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return;
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}
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i=test_block_type(buffer);
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if(i==-1) {
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printf ("bad MBR sector signature 0x%02x%02x\n",
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buffer[DOS_PART_MAGIC_OFFSET],
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buffer[DOS_PART_MAGIC_OFFSET + 1]);
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return;
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}
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if(i==DOS_PBR) {
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printf (" 1\t\t 0\t%10ld\t%2x\n",
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dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
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return;
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}
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/* Print all primary/logical partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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/*
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* fdisk does not show the extended partitions that
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* are not in the MBR
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*/
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if ((pt->sys_ind != 0) &&
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(ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
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print_one_part (pt, ext_part_sector, part_num);
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}
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/* Reverse engr the fdisk part# assignment rule! */
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if ((ext_part_sector == 0) ||
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(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
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part_num++;
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}
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}
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/* Follows the extended partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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if (is_extended (pt->sys_ind)) {
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int lba_start = le32_to_int (pt->start4) + relative;
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print_partition_extended (dev_desc, lba_start,
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ext_part_sector == 0 ? lba_start
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: relative,
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part_num);
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}
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}
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return;
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}
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/* Print a partition that is relative to its Extended partition table
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*/
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static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
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int relative, int part_num,
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int which_part, disk_partition_t *info)
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{
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unsigned char buffer[DEFAULT_SECTOR_SIZE];
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dos_partition_t *pt;
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int i;
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if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
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printf ("** Can't read partition table on %d:%d **\n",
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dev_desc->dev, ext_part_sector);
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return -1;
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}
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if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
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buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
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printf ("bad MBR sector signature 0x%02x%02x\n",
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buffer[DOS_PART_MAGIC_OFFSET],
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buffer[DOS_PART_MAGIC_OFFSET + 1]);
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return -1;
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}
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/* Print all primary/logical partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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/*
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* fdisk does not show the extended partitions that
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* are not in the MBR
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*/
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if ((pt->sys_ind != 0) &&
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(part_num == which_part) &&
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(is_extended(pt->sys_ind) == 0)) {
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info->blksz = 512;
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info->start = ext_part_sector + le32_to_int (pt->start4);
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info->size = le32_to_int (pt->size4);
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switch(dev_desc->if_type) {
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case IF_TYPE_IDE:
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case IF_TYPE_ATAPI:
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sprintf ((char *)info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
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break;
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case IF_TYPE_SCSI:
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sprintf ((char *)info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
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break;
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case IF_TYPE_USB:
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sprintf ((char *)info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
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break;
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case IF_TYPE_DOC:
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sprintf ((char *)info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
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break;
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default:
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sprintf ((char *)info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
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break;
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}
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/* sprintf(info->type, "%d, pt->sys_ind); */
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sprintf ((char *)info->type, "U-Boot");
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return 0;
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}
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/* Reverse engr the fdisk part# assignment rule! */
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if ((ext_part_sector == 0) ||
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(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
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part_num++;
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}
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}
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/* Follows the extended partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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if (is_extended (pt->sys_ind)) {
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int lba_start = le32_to_int (pt->start4) + relative;
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return get_partition_info_extended (dev_desc, lba_start,
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ext_part_sector == 0 ? lba_start : relative,
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part_num, which_part, info);
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}
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}
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return -1;
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}
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void print_part_dos (block_dev_desc_t *dev_desc)
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{
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printf ("Partition Start Sector Num Sectors Type\n");
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print_partition_extended (dev_desc, 0, 0, 1);
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}
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int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
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{
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return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
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}
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#endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */
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