disk/part_dos.c - filogic/uboot - Gitiles

 /*
  * (C) Copyright 2001
  * Raymond Lo, lo@routefree.com
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 /*
  * 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"

 #ifdef HAVE_BLOCK_DEVICE

 /* 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 inline int is_bootable(dos_partition_t *p)
 {
 	return p->boot_ind == 0x80;
 }

 static void print_one_part(dos_partition_t *p, int ext_part_sector,
 			   int part_num, unsigned int disksig)
 {
 	int lba_start = ext_part_sector + le32_to_int (p->start4);
 	int lba_size  = le32_to_int (p->size4);

 	printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
 		part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
 		(is_extended(p->sys_ind) ? " Extd" : ""),
 		(is_bootable(p) ? " Boot" : ""));
 }

 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 */
 	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 */
 }


 int test_part_dos (block_dev_desc_t *dev_desc)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);

 	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
 		return -1;

 	if (test_block_type(buffer) != DOS_MBR)
 		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 int disksig)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(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 != DOS_MBR) {
 		printf ("bad MBR sector signature 0x%02x%02x\n",
 			buffer[DOS_PART_MAGIC_OFFSET],
 			buffer[DOS_PART_MAGIC_OFFSET + 1]);
 		return;
 	}

 	if (!ext_part_sector)
 		disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);

 	/* 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, disksig);
 		}

 		/* 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, disksig);
 		}
 	}

 	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 int disksig)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(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;
 	}

 #ifdef CONFIG_PARTITION_UUIDS
 	if (!ext_part_sector)
 		disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
 #endif

 	/* 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 = (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:
 				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");
 			info->bootable = is_bootable(pt);
 #ifdef CONFIG_PARTITION_UUIDS
 			sprintf(info->uuid, "%08x-%02x", disksig, part_num);
 #endif
 			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, disksig);
 		}
 	}
 	return -1;
 }

 void print_part_dos (block_dev_desc_t *dev_desc)
 {
 	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
 	print_partition_extended(dev_desc, 0, 0, 1, 0);
 }

 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, 0);
 }


 #endif
	/*
	* (C) Copyright 2001
	* Raymond Lo, lo@routefree.com
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	/*
	* 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"

	#ifdef HAVE_BLOCK_DEVICE

	/* 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 inline int is_bootable(dos_partition_t *p)
	{
	return p->boot_ind == 0x80;
	}

	static void print_one_part(dos_partition_t *p, int ext_part_sector,
	int part_num, unsigned int disksig)
	{
	int lba_start = ext_part_sector + le32_to_int (p->start4);
	int lba_size = le32_to_int (p->size4);

	printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
	part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
	(is_extended(p->sys_ind) ? " Extd" : ""),
	(is_bootable(p) ? " Boot" : ""));
	}

	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 */
	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 */
	}


	int test_part_dos (block_dev_desc_t *dev_desc)
	{
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);

	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
	return -1;

	if (test_block_type(buffer) != DOS_MBR)
	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 int disksig)
	{
	ALLOC_CACHE_ALIGN_BUFFER(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 != DOS_MBR) {
	printf ("bad MBR sector signature 0x%02x%02x\n",
	buffer[DOS_PART_MAGIC_OFFSET],
	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	return;
	}

	if (!ext_part_sector)
	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);

	/* 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, disksig);
	}

	/* 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, disksig);
	}
	}

	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 int disksig)
	{
	ALLOC_CACHE_ALIGN_BUFFER(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;
	}

	#ifdef CONFIG_PARTITION_UUIDS
	if (!ext_part_sector)
	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	#endif

	/* 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 = (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:
	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");
	info->bootable = is_bootable(pt);
	#ifdef CONFIG_PARTITION_UUIDS
	sprintf(info->uuid, "%08x-%02x", disksig, part_num);
	#endif
	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, disksig);
	}
	}
	return -1;
	}

	void print_part_dos (block_dev_desc_t *dev_desc)
	{
	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
	print_partition_extended(dev_desc, 0, 0, 1, 0);
	}

	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, 0);
	}


	#endif