+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _PART_H
#define _PART_H
#include <blk.h>
#include <ide.h>
#include <uuid.h>
+#include <linker_lists.h>
+#include <linux/errno.h>
#include <linux/list.h>
struct block_drvr {
#define PART_NAME_LEN 32
#define PART_TYPE_LEN 32
-#define MAX_SEARCH_PARTITIONS 64
+#define MAX_SEARCH_PARTITIONS 128
+
+#define PART_BOOTABLE ((int)BIT(0))
+#define PART_EFI_SYSTEM_PARTITION ((int)BIT(1))
-typedef struct disk_partition {
+struct disk_partition {
lbaint_t start; /* # of first block in partition */
lbaint_t size; /* number of blocks in partition */
ulong blksz; /* block size in bytes */
uchar name[PART_NAME_LEN]; /* partition name */
uchar type[PART_TYPE_LEN]; /* string type description */
- int bootable; /* Active/Bootable flag is set */
+ /*
+ * The bootable is a bitmask with the following fields:
+ *
+ * PART_BOOTABLE the MBR bootable flag is set
+ * PART_EFI_SYSTEM_PARTITION the partition is an EFI system partition
+ */
+ int bootable;
#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
char uuid[UUID_STR_LEN + 1]; /* filesystem UUID as string, if exists */
#endif
char type_guid[UUID_STR_LEN + 1]; /* type GUID as string, if exists */
#endif
#ifdef CONFIG_DOS_PARTITION
- uchar sys_ind; /* partition type */
+ uchar sys_ind; /* partition type */
#endif
-} disk_partition_t;
+};
struct disk_part {
int partnum;
- disk_partition_t gpt_part_info;
+ struct disk_partition gpt_part_info;
struct list_head list;
};
/* Misc _get_dev functions */
-#ifdef CONFIG_PARTITIONS
+#if CONFIG_IS_ENABLED(PARTITIONS)
/**
* blk_get_dev() - get a pointer to a block device given its type and number
*
* @ifname: Interface name (e.g. "ide", "scsi")
* @dev: Device number (0 for first device on that interface, 1 for
* second, etc.
- * @return pointer to the block device, or NULL if not available, or an
+ * Return: pointer to the block device, or NULL if not available, or an
* error occurred.
*/
struct blk_desc *blk_get_dev(const char *ifname, int dev);
struct blk_desc *mg_disk_get_dev(int dev);
-int host_get_dev_err(int dev, struct blk_desc **blk_devp);
/* disk/part.c */
-int part_get_info(struct blk_desc *dev_desc, int part, disk_partition_t *info);
+int part_get_info(struct blk_desc *dev_desc, int part,
+ struct disk_partition *info);
/**
* part_get_info_whole_disk() - get partition info for the special case of
* a partition occupying the entire disk.
*/
-int part_get_info_whole_disk(struct blk_desc *dev_desc, disk_partition_t *info);
+int part_get_info_whole_disk(struct blk_desc *dev_desc,
+ struct disk_partition *info);
void part_print(struct blk_desc *dev_desc);
void part_init(struct blk_desc *dev_desc);
* and hardware partition number (e.g. "2.4") for devices that
* support it (currently only MMC).
* @dev_desc: Returns a pointer to the block device on success
- * @return block device number (local to the interface), or -1 on error
+ * Return: block device number (local to the interface), or -1 on error
*/
int blk_get_device_by_str(const char *ifname, const char *dev_str,
struct blk_desc **dev_desc);
* @allow_whole_dev: true to allow the user to select partition 0
* (which means the whole device), false to require a valid
* partition number >= 1
- * @return partition number, or -1 on error
+ * Return: partition number, or -1 on error
*
*/
int blk_get_device_part_str(const char *ifname, const char *dev_part_str,
struct blk_desc **dev_desc,
- disk_partition_t *info, int allow_whole_dev);
+ struct disk_partition *info, int allow_whole_dev);
/**
* part_get_info_by_name_type() - Search for a partition by name
* @param info - returns the disk partition info
* @param part_type - only search in partitions of this type
*
- * @return - the partition number on match (starting on 1), -1 on no match,
+ * Return: - the partition number on match (starting on 1), -1 on no match,
* otherwise error
*/
int part_get_info_by_name_type(struct blk_desc *dev_desc, const char *name,
- disk_partition_t *info, int part_type);
+ struct disk_partition *info, int part_type);
/**
* part_get_info_by_name() - Search for a partition by name
* @param gpt_name - the specified table entry name
* @param info - returns the disk partition info
*
- * @return - the partition number on match (starting on 1), -1 on no match,
+ * Return: - the partition number on match (starting on 1), -1 on no match,
* otherwise error
*/
int part_get_info_by_name(struct blk_desc *dev_desc,
- const char *name, disk_partition_t *info);
+ const char *name, struct disk_partition *info);
+
+/**
+ * Get partition info from dev number + part name, or dev number + part number.
+ *
+ * Parse a device number and partition description (either name or number)
+ * in the form of device number plus partition name separated by a "#"
+ * (like "device_num#partition_name") or a device number plus a partition number
+ * separated by a ":". For example both "0#misc" and "0:1" can be valid
+ * partition descriptions for a given interface. If the partition is found, sets
+ * dev_desc and part_info accordingly with the information of the partition.
+ *
+ * @param[in] dev_iface Device interface
+ * @param[in] dev_part_str Input partition description, like "0#misc" or "0:1"
+ * @param[out] dev_desc Place to store the device description pointer
+ * @param[out] part_info Place to store the partition information
+ * @param[in] allow_whole_dev true to allow the user to select partition 0
+ * (which means the whole device), false to require a valid
+ * partition number >= 1
+ * Return: the partition number on success, or negative errno on error
+ */
+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);
/**
* part_set_generic_name() - create generic partition like hda1 or sdb2
static inline struct blk_desc *mg_disk_get_dev(int dev) { return NULL; }
static inline int part_get_info(struct blk_desc *dev_desc, int part,
- disk_partition_t *info) { return -1; }
+ struct disk_partition *info) { return -1; }
static inline int part_get_info_whole_disk(struct blk_desc *dev_desc,
- disk_partition_t *info)
+ struct disk_partition *info)
{ return -1; }
static inline void part_print(struct blk_desc *dev_desc) {}
static inline void part_init(struct blk_desc *dev_desc) {}
struct blk_desc **dev_desc)
{ return -1; }
static inline int blk_get_device_part_str(const char *ifname,
- const char *dev_part_str,
- struct blk_desc **dev_desc,
- disk_partition_t *info,
- int allow_whole_dev)
+ const char *dev_part_str,
+ struct blk_desc **dev_desc,
+ struct disk_partition *info,
+ int allow_whole_dev)
{ *dev_desc = NULL; return -1; }
+
+static inline int part_get_info_by_name_type(struct blk_desc *dev_desc,
+ const char *name,
+ struct disk_partition *info,
+ int part_type)
+{
+ return -ENOENT;
+}
+
+static inline int part_get_info_by_name(struct blk_desc *dev_desc,
+ const char *name,
+ struct disk_partition *info)
+{
+ return -ENOENT;
+}
+
+static inline 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)
+{
+ *dev_desc = NULL;
+ return -ENOSYS;
+}
#endif
+struct udevice;
+/**
+ * part_create_block_devices - Create block devices for disk partitions
+ *
+ * Create UCLASS_PARTITION udevices for each of disk partitions in @parent
+ *
+ * @blk_dev: Whole disk device
+ */
+int part_create_block_devices(struct udevice *blk_dev);
+
+/**
+ * disk_blk_read() - read blocks from a disk partition
+ *
+ * @dev: Device to read from (UCLASS_PARTITION)
+ * @start: Start block number to read in the partition (0=first)
+ * @blkcnt: Number of blocks to read
+ * @buffer: Destination buffer for data read
+ * Returns: number of blocks read, or -ve error number (see the
+ * IS_ERR_VALUE() macro
+ */
+ulong disk_blk_read(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
+ void *buffer);
+
+/**
+ * disk_blk_write() - write to a disk partition
+ *
+ * @dev: Device to write to (UCLASS_PARTITION)
+ * @start: Start block number to write in the partition (0=first)
+ * @blkcnt: Number of blocks to write
+ * @buffer: Source buffer for data to write
+ * Returns: number of blocks written, or -ve error number (see the
+ * IS_ERR_VALUE() macro
+ */
+ulong disk_blk_write(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
+ const void *buffer);
+
+/**
+ * disk_blk_erase() - erase a section of a disk partition
+ *
+ * @dev: Device to (partially) erase (UCLASS_PARTITION)
+ * @start: Start block number to erase in the partition (0=first)
+ * @blkcnt: Number of blocks to erase
+ * Returns: number of blocks erased, or -ve error number (see the
+ * IS_ERR_VALUE() macro
+ */
+ulong disk_blk_erase(struct udevice *dev, lbaint_t start, lbaint_t blkcnt);
+
/*
* We don't support printing partition information in SPL and only support
* getting partition information in a few cases.
*/
#ifdef CONFIG_SPL_BUILD
# define part_print_ptr(x) NULL
-# if defined(CONFIG_SPL_EXT_SUPPORT) || defined(CONFIG_SPL_FAT_SUPPORT) || \
+# if defined(CONFIG_SPL_FS_EXT4) || defined(CONFIG_SPL_FS_FAT) || \
defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
# define part_get_info_ptr(x) x
# else
* @info: Returns partition information
*/
int (*get_info)(struct blk_desc *dev_desc, int part,
- disk_partition_t *info);
+ struct disk_partition *info);
/**
* print() - Print partition information
* @param gpt_h - pointer to GPT header representation
* @param gpt_e - pointer to GPT partition table entries
*
- * @return - zero on success, otherwise error
+ * Return: - zero on success, otherwise error
*/
int write_gpt_table(struct blk_desc *dev_desc,
gpt_header *gpt_h, gpt_entry *gpt_e);
* @param partitions - list of partitions
* @param parts - number of partitions
*
- * @return zero on success
+ * Return: zero on success
*/
int gpt_fill_pte(struct blk_desc *dev_desc,
gpt_header *gpt_h, gpt_entry *gpt_e,
- disk_partition_t *partitions, int parts);
+ struct disk_partition *partitions, int parts);
/**
* gpt_fill_header(): Fill the GPT header
* @param str_guid - disk guid string representation
* @param parts_count - number of partitions
*
- * @return - error on str_guid conversion error
+ * Return: - error on str_guid conversion error
*/
int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h,
char *str_guid, int parts_count);
* @param partitions - list of partitions
* @param parts - number of partitions
*
- * @return zero on success
+ * Return: zero on success
*/
int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid,
- disk_partition_t *partitions, const int parts_count);
+ struct disk_partition *partitions, const int parts_count);
/**
* is_valid_gpt_buf() - Ensure that the Primary GPT information is valid
* @param dev_desc - block device descriptor
* @param buf - buffer which contains the MBR and Primary GPT info
*
- * @return - '0' on success, otherwise error
+ * Return: - '0' on success, otherwise error
*/
int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf);
* @param dev_desc - block device descriptor
* @param buf - buffer which contains the MBR and Primary GPT info
*
- * @return - '0' on success, otherwise error
+ * Return: - '0' on success, otherwise error
*/
int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf);
* @param gpt_head - pointer to GPT header data read from medium
* @param gpt_pte - pointer to GPT partition table enties read from medium
*
- * @return - '0' on success, otherwise error
+ * Return: - '0' on success, otherwise error
*/
int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head,
gpt_entry **gpt_pte);
/**
+ * gpt_repair_headers() - Function to repair the GPT's header
+ * and partition table entries (PTE)
+ *
+ * @param dev_desc - block device descriptor
+ *
+ * Return: - '0' on success, otherwise error
+ */
+int gpt_repair_headers(struct blk_desc *dev_desc);
+
+/**
* gpt_verify_partitions() - Function to check if partitions' name, start and
* size correspond to '$partitions' env variable
*
* @param gpt_head - pointer to GPT header data read from medium
* @param gpt_pte - pointer to GPT partition table enties read from medium
*
- * @return - '0' on success, otherwise error
+ * Return: - '0' on success, otherwise error
*/
int gpt_verify_partitions(struct blk_desc *dev_desc,
- disk_partition_t *partitions, int parts,
+ struct disk_partition *partitions, int parts,
gpt_header *gpt_head, gpt_entry **gpt_pte);
* @param dev_desc - block device descriptor
* @param guid - pre-allocated string in which to return the GUID
*
- * @return - '0' on success, otherwise error
+ * Return: - '0' on success, otherwise error
*/
int get_disk_guid(struct blk_desc *dev_desc, char *guid);
*
* @param buf - buffer which contains the MBR
*
- * @return - '0' on success, otherwise error
+ * Return: - '0' on success, otherwise error
*/
int is_valid_dos_buf(void *buf);
/**
- * write_mbr_partition() - write DOS MBR
+ * write_mbr_sector() - write DOS MBR
*
* @param dev_desc - block device descriptor
* @param buf - buffer which contains the MBR
*
- * @return - '0' on success, otherwise error
+ * Return: - '0' on success, otherwise error
*/
-int write_mbr_partition(struct blk_desc *dev_desc, void *buf);
+int write_mbr_sector(struct blk_desc *dev_desc, void *buf);
+
+int write_mbr_partitions(struct blk_desc *dev,
+ struct disk_partition *p, int count, unsigned int disksig);
+int layout_mbr_partitions(struct disk_partition *p, int count,
+ lbaint_t total_sectors);
#endif
+#if CONFIG_IS_ENABLED(PARTITIONS)
+/**
+ * part_driver_get_count() - get partition driver count
+ *
+ * Return: - number of partition drivers
+ */
+static inline int part_driver_get_count(void)
+{
+ return ll_entry_count(struct part_driver, part_driver);
+}
+
+/**
+ * part_driver_get_first() - get first partition driver
+ *
+ * Return: - pointer to first partition driver on success, otherwise NULL
+ */
+static inline struct part_driver *part_driver_get_first(void)
+{
+ return ll_entry_start(struct part_driver, part_driver);
+}
+
+#else
+static inline int part_driver_get_count(void)
+{ return 0; }
+
+static inline struct part_driver *part_driver_get_first(void)
+{ return NULL; }
+#endif /* CONFIG_PARTITIONS */
#endif /* _PART_H */
projects / platform / kernel / u-boot.git / blobdiff