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u-boot/disk/part.c
Tim Kientzle 7e71dc6884 disk/part.c: Fix device enumeration through API 
The patch below fixes device enumeration through the U-Boot API.

Device enumeration crashes when the system in question doesn't
have any RAM mapped to address zero (I discovered this on a
BeagleBone board), since the enumeration calls get_dev with a
NULL ifname sometimes which then gets passed down to strncmp().

This fix simply ensures that get_dev returns NULL when invoked
with a NULL ifname.

Signed-off-by: Tim Kientzle <kientzle@freebsd.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2012-03-27 11:46:33 +02:00

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/*
* (C) Copyright 2001
* 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
*/
#include <common.h>
#include <command.h>
#include <ide.h>
#include <part.h>
#undef PART_DEBUG
#ifdef PART_DEBUG
#define PRINTF(fmt,args...) printf (fmt ,##args)
#else
#define PRINTF(fmt,args...)
#endif
#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) )
struct block_drvr {
char *name;
block_dev_desc_t* (*get_dev)(int dev);
};
static const struct block_drvr block_drvr[] = {
#if defined(CONFIG_CMD_IDE)
{ .name = "ide", .get_dev = ide_get_dev, },
#endif
#if defined(CONFIG_CMD_SATA)
{.name = "sata", .get_dev = sata_get_dev, },
#endif
#if defined(CONFIG_CMD_SCSI)
{ .name = "scsi", .get_dev = scsi_get_dev, },
#endif
#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
{ .name = "usb", .get_dev = usb_stor_get_dev, },
#endif
#if defined(CONFIG_MMC)
{ .name = "mmc", .get_dev = mmc_get_dev, },
#endif
#if defined(CONFIG_SYSTEMACE)
{ .name = "ace", .get_dev = systemace_get_dev, },
#endif
#if defined(CONFIG_CMD_MG_DISK)
{ .name = "mgd", .get_dev = mg_disk_get_dev, },
#endif
{ },
};
DECLARE_GLOBAL_DATA_PTR;
block_dev_desc_t *get_dev(char* ifname, int dev)
{
const struct block_drvr *drvr = block_drvr;
block_dev_desc_t* (*reloc_get_dev)(int dev);
char *name;
if (!ifname)
return NULL;
name = drvr->name;
#ifdef CONFIG_NEEDS_MANUAL_RELOC
name += gd->reloc_off;
#endif
while (drvr->name) {
name = drvr->name;
reloc_get_dev = drvr->get_dev;
#ifdef CONFIG_NEEDS_MANUAL_RELOC
name += gd->reloc_off;
reloc_get_dev += gd->reloc_off;
#endif
if (strncmp(ifname, name, strlen(name)) == 0)
return reloc_get_dev(dev);
drvr++;
}
return NULL;
}
#else
block_dev_desc_t *get_dev(char* ifname, int dev)
{
return NULL;
}
#endif
#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) )
/* ------------------------------------------------------------------------- */
/*
* reports device info to the user
*/
#ifdef CONFIG_LBA48
typedef uint64_t lba512_t;
#else
typedef lbaint_t lba512_t;
#endif
/*
* Overflowless variant of (block_count * mul_by / div_by)
* when div_by > mul_by
*/
static lba512_t lba512_muldiv (lba512_t block_count, lba512_t mul_by, lba512_t div_by)
{
lba512_t bc_quot, bc_rem;
/* x * m / d == x / d * m + (x % d) * m / d */
bc_quot = block_count / div_by;
bc_rem = block_count - div_by * bc_quot;
return bc_quot * mul_by + (bc_rem * mul_by) / div_by;
}
void dev_print (block_dev_desc_t *dev_desc)
{
lba512_t lba512; /* number of blocks if 512bytes block size */
if (dev_desc->type == DEV_TYPE_UNKNOWN) {
puts ("not available\n");
return;
}
switch (dev_desc->if_type) {
case IF_TYPE_SCSI:
printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
dev_desc->target,dev_desc->lun,
dev_desc->vendor,
dev_desc->product,
dev_desc->revision);
break;
case IF_TYPE_ATAPI:
case IF_TYPE_IDE:
case IF_TYPE_SATA:
printf ("Model: %s Firm: %s Ser#: %s\n",
dev_desc->vendor,
dev_desc->revision,
dev_desc->product);
break;
case IF_TYPE_SD:
case IF_TYPE_MMC:
case IF_TYPE_USB:
printf ("Vendor: %s Rev: %s Prod: %s\n",
dev_desc->vendor,
dev_desc->revision,
dev_desc->product);
break;
case IF_TYPE_DOC:
puts("device type DOC\n");
return;
case IF_TYPE_UNKNOWN:
puts("device type unknown\n");
return;
default:
printf("Unhandled device type: %i\n", dev_desc->if_type);
return;
}
puts (" Type: ");
if (dev_desc->removable)
puts ("Removable ");
switch (dev_desc->type & 0x1F) {
case DEV_TYPE_HARDDISK:
puts ("Hard Disk");
break;
case DEV_TYPE_CDROM:
puts ("CD ROM");
break;
case DEV_TYPE_OPDISK:
puts ("Optical Device");
break;
case DEV_TYPE_TAPE:
puts ("Tape");
break;
default:
printf ("# %02X #", dev_desc->type & 0x1F);
break;
}
puts ("\n");
if ((dev_desc->lba * dev_desc->blksz)>0L) {
ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem;
lbaint_t lba;
lba = dev_desc->lba;
lba512 = (lba * (dev_desc->blksz/512));
/* round to 1 digit */
mb = lba512_muldiv(lba512, 10, 2048); /* 2048 = (1024 * 1024) / 512 MB */
mb_quot = mb / 10;
mb_rem = mb - (10 * mb_quot);
gb = mb / 1024;
gb_quot = gb / 10;
gb_rem = gb - (10 * gb_quot);
#ifdef CONFIG_LBA48
if (dev_desc->lba48)
printf (" Supports 48-bit addressing\n");
#endif
#if defined(CONFIG_SYS_64BIT_LBA)
printf (" Capacity: %ld.%ld MB = %ld.%ld GB (%Ld x %ld)\n",
mb_quot, mb_rem,
gb_quot, gb_rem,
lba,
dev_desc->blksz);
#else
printf (" Capacity: %ld.%ld MB = %ld.%ld GB (%ld x %ld)\n",
mb_quot, mb_rem,
gb_quot, gb_rem,
(ulong)lba,
dev_desc->blksz);
#endif
} else {
puts (" Capacity: not available\n");
}
}
#endif
#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) )
#if defined(CONFIG_MAC_PARTITION) || \
defined(CONFIG_DOS_PARTITION) || \
defined(CONFIG_ISO_PARTITION) || \
defined(CONFIG_AMIGA_PARTITION) || \
defined(CONFIG_EFI_PARTITION)
void init_part (block_dev_desc_t * dev_desc)
{
#ifdef CONFIG_ISO_PARTITION
if (test_part_iso(dev_desc) == 0) {
dev_desc->part_type = PART_TYPE_ISO;
return;
}
#endif
#ifdef CONFIG_MAC_PARTITION
if (test_part_mac(dev_desc) == 0) {
dev_desc->part_type = PART_TYPE_MAC;
return;
}
#endif
/* must be placed before DOS partition detection */
#ifdef CONFIG_EFI_PARTITION
if (test_part_efi(dev_desc) == 0) {
dev_desc->part_type = PART_TYPE_EFI;
return;
}
#endif
#ifdef CONFIG_DOS_PARTITION
if (test_part_dos(dev_desc) == 0) {
dev_desc->part_type = PART_TYPE_DOS;
return;
}
#endif
#ifdef CONFIG_AMIGA_PARTITION
if (test_part_amiga(dev_desc) == 0) {
dev_desc->part_type = PART_TYPE_AMIGA;
return;
}
#endif
}
int get_partition_info (block_dev_desc_t *dev_desc, int part
, disk_partition_t *info)
{
switch (dev_desc->part_type) {
#ifdef CONFIG_MAC_PARTITION
case PART_TYPE_MAC:
if (get_partition_info_mac(dev_desc,part,info) == 0) {
PRINTF ("## Valid MAC partition found ##\n");
return (0);
}
break;
#endif
#ifdef CONFIG_DOS_PARTITION
case PART_TYPE_DOS:
if (get_partition_info_dos(dev_desc,part,info) == 0) {
PRINTF ("## Valid DOS partition found ##\n");
return (0);
}
break;
#endif
#ifdef CONFIG_ISO_PARTITION
case PART_TYPE_ISO:
if (get_partition_info_iso(dev_desc,part,info) == 0) {
PRINTF ("## Valid ISO boot partition found ##\n");
return (0);
}
break;
#endif
#ifdef CONFIG_AMIGA_PARTITION
case PART_TYPE_AMIGA:
if (get_partition_info_amiga(dev_desc, part, info) == 0)
{
PRINTF ("## Valid Amiga partition found ##\n");
return (0);
}
break;
#endif
#ifdef CONFIG_EFI_PARTITION
case PART_TYPE_EFI:
if (get_partition_info_efi(dev_desc,part,info) == 0) {
PRINTF ("## Valid EFI partition found ##\n");
return (0);
}
break;
#endif
default:
break;
}
return (-1);
}
static void print_part_header (const char *type, block_dev_desc_t * dev_desc)
{
puts ("\nPartition Map for ");
switch (dev_desc->if_type) {
case IF_TYPE_IDE:
puts ("IDE");
break;
case IF_TYPE_SATA:
puts ("SATA");
break;
case IF_TYPE_SCSI:
puts ("SCSI");
break;
case IF_TYPE_ATAPI:
puts ("ATAPI");
break;
case IF_TYPE_USB:
puts ("USB");
break;
case IF_TYPE_DOC:
puts ("DOC");
break;
case IF_TYPE_MMC:
puts ("MMC");
break;
default:
puts ("UNKNOWN");
break;
}
printf (" device %d -- Partition Type: %s\n\n",
dev_desc->dev, type);
}
void print_part (block_dev_desc_t * dev_desc)
{
switch (dev_desc->part_type) {
#ifdef CONFIG_MAC_PARTITION
case PART_TYPE_MAC:
PRINTF ("## Testing for valid MAC partition ##\n");
print_part_header ("MAC", dev_desc);
print_part_mac (dev_desc);
return;
#endif
#ifdef CONFIG_DOS_PARTITION
case PART_TYPE_DOS:
PRINTF ("## Testing for valid DOS partition ##\n");
print_part_header ("DOS", dev_desc);
print_part_dos (dev_desc);
return;
#endif
#ifdef CONFIG_ISO_PARTITION
case PART_TYPE_ISO:
PRINTF ("## Testing for valid ISO Boot partition ##\n");
print_part_header ("ISO", dev_desc);
print_part_iso (dev_desc);
return;
#endif
#ifdef CONFIG_AMIGA_PARTITION
case PART_TYPE_AMIGA:
PRINTF ("## Testing for a valid Amiga partition ##\n");
print_part_header ("AMIGA", dev_desc);
print_part_amiga (dev_desc);
return;
#endif
#ifdef CONFIG_EFI_PARTITION
case PART_TYPE_EFI:
PRINTF ("## Testing for valid EFI partition ##\n");
print_part_header ("EFI", dev_desc);
print_part_efi (dev_desc);
return;
#endif
}
puts ("## Unknown partition table\n");
}
#else /* neither MAC nor DOS nor ISO nor AMIGA nor EFI partition configured */
# error neither CONFIG_MAC_PARTITION nor CONFIG_DOS_PARTITION
# error nor CONFIG_ISO_PARTITION nor CONFIG_AMIGA_PARTITION
# error nor CONFIG_EFI_PARTITION configured!
#endif
#endif
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