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u-boot/disk/part.c
Simon Glass 7e5f460ec4 global: Convert simple_strtoul() with hex to hextoul() 
It is a pain to have to specify the value 16 in each call. Add a new
hextoul() function and update the code to use it.

Add a proper comment to simple_strtoul() while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-02 13:32:14 -04:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2001
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
#include <common.h>
#include <blk.h>
#include <command.h>
#include <env.h>
#include <errno.h>
#include <ide.h>
#include <log.h>
#include <malloc.h>
#include <part.h>
#include <ubifs_uboot.h>
#undef PART_DEBUG
#ifdef PART_DEBUG
#define PRINTF(fmt,args...) printf (fmt ,##args)
#else
#define PRINTF(fmt,args...)
#endif
/* Check all partition types */
#define PART_TYPE_ALL -1
static struct part_driver *part_driver_lookup_type(struct blk_desc *dev_desc)
{
struct part_driver *drv =
ll_entry_start(struct part_driver, part_driver);
const int n_ents = ll_entry_count(struct part_driver, part_driver);
struct part_driver *entry;
if (dev_desc->part_type == PART_TYPE_UNKNOWN) {
for (entry = drv; entry != drv + n_ents; entry++) {
int ret;
ret = entry->test(dev_desc);
if (!ret) {
dev_desc->part_type = entry->part_type;
return entry;
}
}
} else {
for (entry = drv; entry != drv + n_ents; entry++) {
if (dev_desc->part_type == entry->part_type)
return entry;
}
}
/* Not found */
return NULL;
}
#ifdef CONFIG_HAVE_BLOCK_DEVICE
static struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
{
struct blk_desc *dev_desc;
int ret;
dev_desc = blk_get_devnum_by_typename(ifname, dev);
if (!dev_desc) {
debug("%s: No device for iface '%s', dev %d\n", __func__,
ifname, dev);
return NULL;
}
ret = blk_dselect_hwpart(dev_desc, hwpart);
if (ret) {
debug("%s: Failed to select h/w partition: err-%d\n", __func__,
ret);
return NULL;
}
return dev_desc;
}
struct blk_desc *blk_get_dev(const char *ifname, int dev)
{
return get_dev_hwpart(ifname, dev, 0);
}
#else
struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
{
return NULL;
}
struct blk_desc *blk_get_dev(const char *ifname, int dev)
{
return NULL;
}
#endif
#ifdef CONFIG_HAVE_BLOCK_DEVICE
/* ------------------------------------------------------------------------- */
/*
* 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 / 2**right_shift)
* when 2**right_shift > mul_by
*/
static lba512_t lba512_muldiv(lba512_t block_count, lba512_t mul_by,
int right_shift)
{
lba512_t bc_quot, bc_rem;
/* x * m / d == x / d * m + (x % d) * m / d */
bc_quot = block_count >> right_shift;
bc_rem = block_count - (bc_quot << right_shift);
return bc_quot * mul_by + ((bc_rem * mul_by) >> right_shift);
}
void dev_print (struct blk_desc *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:
case IF_TYPE_NVME:
case IF_TYPE_PVBLOCK:
case IF_TYPE_HOST:
printf ("Vendor: %s Rev: %s Prod: %s\n",
dev_desc->vendor,
dev_desc->revision,
dev_desc->product);
break;
case IF_TYPE_VIRTIO:
printf("%s VirtIO Block Device\n", dev_desc->vendor);
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 > 0L && 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 */
/* 2048 = (1024 * 1024) / 512 MB */
mb = lba512_muldiv(lba512, 10, 11);
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: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
mb_quot, mb_rem,
gb_quot, gb_rem,
lba,
dev_desc->blksz);
#else
printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
mb_quot, mb_rem,
gb_quot, gb_rem,
(ulong)lba,
dev_desc->blksz);
#endif
} else {
puts (" Capacity: not available\n");
}
}
#endif
#ifdef CONFIG_HAVE_BLOCK_DEVICE
void part_init(struct blk_desc *dev_desc)
{
struct part_driver *drv =
ll_entry_start(struct part_driver, part_driver);
const int n_ents = ll_entry_count(struct part_driver, part_driver);
struct part_driver *entry;
blkcache_invalidate(dev_desc->if_type, dev_desc->devnum);
dev_desc->part_type = PART_TYPE_UNKNOWN;
for (entry = drv; entry != drv + n_ents; entry++) {
int ret;
ret = entry->test(dev_desc);
debug("%s: try '%s': ret=%d\n", __func__, entry->name, ret);
if (!ret) {
dev_desc->part_type = entry->part_type;
break;
}
}
}
static void print_part_header(const char *type, struct blk_desc *dev_desc)
{
#if CONFIG_IS_ENABLED(MAC_PARTITION) || \
CONFIG_IS_ENABLED(DOS_PARTITION) || \
CONFIG_IS_ENABLED(ISO_PARTITION) || \
CONFIG_IS_ENABLED(AMIGA_PARTITION) || \
CONFIG_IS_ENABLED(EFI_PARTITION)
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;
case IF_TYPE_HOST:
puts ("HOST");
break;
case IF_TYPE_NVME:
puts ("NVMe");
break;
case IF_TYPE_PVBLOCK:
puts("PV BLOCK");
break;
case IF_TYPE_VIRTIO:
puts("VirtIO");
break;
default:
puts ("UNKNOWN");
break;
}
printf (" device %d -- Partition Type: %s\n\n",
dev_desc->devnum, type);
#endif /* any CONFIG_..._PARTITION */
}
void part_print(struct blk_desc *dev_desc)
{
struct part_driver *drv;
drv = part_driver_lookup_type(dev_desc);
if (!drv) {
printf("## Unknown partition table type %x\n",
dev_desc->part_type);
return;
}
PRINTF("## Testing for valid %s partition ##\n", drv->name);
print_part_header(drv->name, dev_desc);
if (drv->print)
drv->print(dev_desc);
}
#endif /* CONFIG_HAVE_BLOCK_DEVICE */
int part_get_info(struct blk_desc *dev_desc, int part,
struct disk_partition *info)
{
#ifdef CONFIG_HAVE_BLOCK_DEVICE
struct part_driver *drv;
#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
/* The common case is no UUID support */
info->uuid[0] = 0;
#endif
#ifdef CONFIG_PARTITION_TYPE_GUID
info->type_guid[0] = 0;
#endif
drv = part_driver_lookup_type(dev_desc);
if (!drv) {
debug("## Unknown partition table type %x\n",
dev_desc->part_type);
return -EPROTONOSUPPORT;
}
if (!drv->get_info) {
PRINTF("## Driver %s does not have the get_info() method\n",
drv->name);
return -ENOSYS;
}
if (drv->get_info(dev_desc, part, info) == 0) {
PRINTF("## Valid %s partition found ##\n", drv->name);
return 0;
}
#endif /* CONFIG_HAVE_BLOCK_DEVICE */
return -ENOENT;
}
int part_get_info_whole_disk(struct blk_desc *dev_desc,
struct disk_partition *info)
{
info->start = 0;
info->size = dev_desc->lba;
info->blksz = dev_desc->blksz;
info->bootable = 0;
strcpy((char *)info->type, BOOT_PART_TYPE);
strcpy((char *)info->name, "Whole Disk");
#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
info->uuid[0] = 0;
#endif
#ifdef CONFIG_PARTITION_TYPE_GUID
info->type_guid[0] = 0;
#endif
return 0;
}
int blk_get_device_by_str(const char *ifname, const char *dev_hwpart_str,
struct blk_desc **dev_desc)
{
char *ep;
char *dup_str = NULL;
const char *dev_str, *hwpart_str;
int dev, hwpart;
hwpart_str = strchr(dev_hwpart_str, '.');
if (hwpart_str) {
dup_str = strdup(dev_hwpart_str);
dup_str[hwpart_str - dev_hwpart_str] = 0;
dev_str = dup_str;
hwpart_str++;
} else {
dev_str = dev_hwpart_str;
hwpart = 0;
}
dev = hextoul(dev_str, &ep);
if (*ep) {
printf("** Bad device specification %s %s **\n",
ifname, dev_str);
dev = -EINVAL;
goto cleanup;
}
if (hwpart_str) {
hwpart = hextoul(hwpart_str, &ep);
if (*ep) {
printf("** Bad HW partition specification %s %s **\n",
ifname, hwpart_str);
dev = -EINVAL;
goto cleanup;
}
}
*dev_desc = get_dev_hwpart(ifname, dev, hwpart);
if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
debug("** Bad device %s %s **\n", ifname, dev_hwpart_str);
dev = -ENODEV;
goto cleanup;
}
#ifdef CONFIG_HAVE_BLOCK_DEVICE
/*
* Updates the partition table for the specified hw partition.
* Always should be done, otherwise hw partition 0 will return stale
* data after displaying a non-zero hw partition.
*/
part_init(*dev_desc);
#endif
cleanup:
free(dup_str);
return dev;
}
#define PART_UNSPECIFIED -2
#define PART_AUTO -1
int blk_get_device_part_str(const char *ifname, const char *dev_part_str,
struct blk_desc **dev_desc,
struct disk_partition *info, int allow_whole_dev)
{
int ret;
const char *part_str;
char *dup_str = NULL;
const char *dev_str;
int dev;
char *ep;
int p;
int part;
struct disk_partition tmpinfo;
#ifdef CONFIG_SANDBOX
/*
* Special-case a pseudo block device "hostfs", to allow access to the
* host's own filesystem.
*/
if (0 == strcmp(ifname, "hostfs")) {
*dev_desc = NULL;
info->start = 0;
info->size = 0;
info->blksz = 0;
info->bootable = 0;
strcpy((char *)info->type, BOOT_PART_TYPE);
strcpy((char *)info->name, "Sandbox host");
#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
info->uuid[0] = 0;
#endif
#ifdef CONFIG_PARTITION_TYPE_GUID
info->type_guid[0] = 0;
#endif
return 0;
}
#endif
#ifdef CONFIG_CMD_UBIFS
/*
* Special-case ubi, ubi goes through a mtd, rather than through
* a regular block device.
*/
if (0 == strcmp(ifname, "ubi")) {
if (!ubifs_is_mounted()) {
printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
return -EINVAL;
}
*dev_desc = NULL;
memset(info, 0, sizeof(*info));
strcpy((char *)info->type, BOOT_PART_TYPE);
strcpy((char *)info->name, "UBI");
#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
info->uuid[0] = 0;
#endif
return 0;
}
#endif
/* If no dev_part_str, use bootdevice environment variable */
if (!dev_part_str || !strlen(dev_part_str) ||
!strcmp(dev_part_str, "-"))
dev_part_str = env_get("bootdevice");
/* If still no dev_part_str, it's an error */
if (!dev_part_str) {
printf("** No device specified **\n");
ret = -ENODEV;
goto cleanup;
}
/* Separate device and partition ID specification */
part_str = strchr(dev_part_str, ':');
if (part_str) {
dup_str = strdup(dev_part_str);
dup_str[part_str - dev_part_str] = 0;
dev_str = dup_str;
part_str++;
} else {
dev_str = dev_part_str;
}
/* Look up the device */
dev = blk_get_device_by_str(ifname, dev_str, dev_desc);
if (dev < 0) {
ret = dev;
goto cleanup;
}
/* Convert partition ID string to number */
if (!part_str || !*part_str) {
part = PART_UNSPECIFIED;
} else if (!strcmp(part_str, "auto")) {
part = PART_AUTO;
} else {
/* Something specified -> use exactly that */
part = (int)hextoul(part_str, &ep);
/*
* Less than whole string converted,
* or request for whole device, but caller requires partition.
*/
if (*ep || (part == 0 && !allow_whole_dev)) {
printf("** Bad partition specification %s %s **\n",
ifname, dev_part_str);
ret = -ENOENT;
goto cleanup;
}
}
/*
* No partition table on device,
* or user requested partition 0 (entire device).
*/
if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) ||
(part == 0)) {
if (!(*dev_desc)->lba) {
printf("** Bad device size - %s %s **\n", ifname,
dev_str);
ret = -EINVAL;
goto cleanup;
}
/*
* If user specified a partition ID other than 0,
* or the calling command only accepts partitions,
* it's an error.
*/
if ((part > 0) || (!allow_whole_dev)) {
printf("** No partition table - %s %s **\n", ifname,
dev_str);
ret = -EPROTONOSUPPORT;
goto cleanup;
}
(*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
part_get_info_whole_disk(*dev_desc, info);
ret = 0;
goto cleanup;
}
/*
* Now there's known to be a partition table,
* not specifying a partition means to pick partition 1.
*/
if (part == PART_UNSPECIFIED)
part = 1;
/*
* If user didn't specify a partition number, or did specify something
* other than "auto", use that partition number directly.
*/
if (part != PART_AUTO) {
ret = part_get_info(*dev_desc, part, info);
if (ret) {
printf("** Invalid partition %d **\n", part);
goto cleanup;
}
} else {
/*
* Find the first bootable partition.
* If none are bootable, fall back to the first valid partition.
*/
part = 0;
for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
ret = part_get_info(*dev_desc, p, info);
if (ret)
continue;
/*
* First valid partition, or new better partition?
* If so, save partition ID.
*/
if (!part || info->bootable)
part = p;
/* Best possible partition? Stop searching. */
if (info->bootable)
break;
/*
* We now need to search further for best possible.
* If we what we just queried was the best so far,
* save the info since we over-write it next loop.
*/
if (part == p)
tmpinfo = *info;
}
/* If we found any acceptable partition */
if (part) {
/*
* If we searched all possible partition IDs,
* return the first valid partition we found.
*/
if (p == MAX_SEARCH_PARTITIONS + 1)
*info = tmpinfo;
} else {
printf("** No valid partitions found **\n");
goto cleanup;
}
}
if (strncmp((char *)info->type, BOOT_PART_TYPE, sizeof(info->type)) != 0) {
printf("** Invalid partition type \"%.32s\""
" (expect \"" BOOT_PART_TYPE "\")\n",
info->type);
ret = -EINVAL;
goto cleanup;
}
(*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
ret = part;
goto cleanup;
cleanup:
free(dup_str);
return ret;
}
int part_get_info_by_name_type(struct blk_desc *dev_desc, const char *name,
struct disk_partition *info, int part_type)
{
struct part_driver *part_drv;
int ret;
int i;
part_drv = part_driver_lookup_type(dev_desc);
if (!part_drv)
return -1;
for (i = 1; i < part_drv->max_entries; i++) {
ret = part_drv->get_info(dev_desc, i, info);
if (ret != 0) {
/* no more entries in table */
break;
}
if (strcmp(name, (const char *)info->name) == 0) {
/* matched */
return i;
}
}
return -ENOENT;
}
int part_get_info_by_name(struct blk_desc *dev_desc, const char *name,
struct disk_partition *info)
{
return part_get_info_by_name_type(dev_desc, name, info, PART_TYPE_ALL);
}
/**
* Get partition info from device number and partition name.
*
* Parse a device number and partition name string in the form of
* "devicenum.hwpartnum#partition_name", for example "0.1#misc". devicenum and
* hwpartnum are both optional, defaulting to 0. If the partition is found,
* sets dev_desc and part_info accordingly with the information of the
* partition with the given partition_name.
*
* @param[in] dev_iface Device interface
* @param[in] dev_part_str Input string argument, like "0.1#misc"
* @param[out] dev_desc Place to store the device description pointer
* @param[out] part_info Place to store the partition information
* @return 0 on success, or a negative on error
*/
static int part_get_info_by_dev_and_name(const char *dev_iface,
const char *dev_part_str,
struct blk_desc **dev_desc,
struct disk_partition *part_info)
{
char *dup_str = NULL;
const char *dev_str, *part_str;
int ret;
/* Separate device and partition name specification */
if (dev_part_str)
part_str = strchr(dev_part_str, '#');
else
part_str = NULL;
if (part_str) {
dup_str = strdup(dev_part_str);
dup_str[part_str - dev_part_str] = 0;
dev_str = dup_str;
part_str++;
} else {
return -EINVAL;
}
ret = blk_get_device_by_str(dev_iface, dev_str, dev_desc);
if (ret < 0)
goto cleanup;
ret = part_get_info_by_name(*dev_desc, part_str, part_info);
if (ret < 0)
printf("Could not find \"%s\" partition\n", part_str);
cleanup:
free(dup_str);
return ret;
}
int part_get_info_by_dev_and_name_or_num(const char *dev_iface,
const char *dev_part_str,
struct blk_desc **dev_desc,
struct disk_partition *part_info,
int allow_whole_dev)
{
int ret;
/* Split the part_name if passed as "$dev_num#part_name". */
ret = part_get_info_by_dev_and_name(dev_iface, dev_part_str,
dev_desc, part_info);
if (ret >= 0)
return ret;
/*
* Couldn't lookup by name, try looking up the partition description
* directly.
*/
ret = blk_get_device_part_str(dev_iface, dev_part_str,
dev_desc, part_info, allow_whole_dev);
if (ret < 0)
printf("Couldn't find partition %s %s\n",
dev_iface, dev_part_str);
return ret;
}
void part_set_generic_name(const struct blk_desc *dev_desc,
int part_num, char *name)
{
char *devtype;
switch (dev_desc->if_type) {
case IF_TYPE_IDE:
case IF_TYPE_SATA:
case IF_TYPE_ATAPI:
devtype = "hd";
break;
case IF_TYPE_SCSI:
devtype = "sd";
break;
case IF_TYPE_USB:
devtype = "usbd";
break;
case IF_TYPE_DOC:
devtype = "docd";
break;
case IF_TYPE_MMC:
case IF_TYPE_SD:
devtype = "mmcsd";
break;
default:
devtype = "xx";
break;
}
sprintf(name, "%s%c%d", devtype, 'a' + dev_desc->devnum, part_num);
}
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