25801acc1f
Up to now for MBR and GPT partitions the info field 'bootable' was set to 1 if either the partition was an EFI system partition or the bootable flag was set. Turn info field 'bootable' into a bit mask with separate bits for bootable and EFI system partition. This will allow us to identify the EFI system partition in the UEFI sub-system. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
479 lines
16 KiB
C
479 lines
16 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2000-2004
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*/
|
|
#ifndef _PART_H
|
|
#define _PART_H
|
|
|
|
#include <blk.h>
|
|
#include <ide.h>
|
|
#include <uuid.h>
|
|
#include <linux/list.h>
|
|
|
|
struct block_drvr {
|
|
char *name;
|
|
int (*select_hwpart)(int dev_num, int hwpart);
|
|
};
|
|
|
|
#define LOG2(x) (((x & 0xaaaaaaaa) ? 1 : 0) + ((x & 0xcccccccc) ? 2 : 0) + \
|
|
((x & 0xf0f0f0f0) ? 4 : 0) + ((x & 0xff00ff00) ? 8 : 0) + \
|
|
((x & 0xffff0000) ? 16 : 0))
|
|
#define LOG2_INVALID(type) ((type)((sizeof(type)<<3)-1))
|
|
|
|
/* Part types */
|
|
#define PART_TYPE_UNKNOWN 0x00
|
|
#define PART_TYPE_MAC 0x01
|
|
#define PART_TYPE_DOS 0x02
|
|
#define PART_TYPE_ISO 0x03
|
|
#define PART_TYPE_AMIGA 0x04
|
|
#define PART_TYPE_EFI 0x05
|
|
|
|
/* maximum number of partition entries supported by search */
|
|
#define DOS_ENTRY_NUMBERS 8
|
|
#define ISO_ENTRY_NUMBERS 64
|
|
#define MAC_ENTRY_NUMBERS 64
|
|
#define AMIGA_ENTRY_NUMBERS 8
|
|
/*
|
|
* Type string for U-Boot bootable partitions
|
|
*/
|
|
#define BOOT_PART_TYPE "U-Boot" /* primary boot partition type */
|
|
#define BOOT_PART_COMP "PPCBoot" /* PPCBoot compatibility type */
|
|
|
|
/* device types */
|
|
#define DEV_TYPE_UNKNOWN 0xff /* not connected */
|
|
#define DEV_TYPE_HARDDISK 0x00 /* harddisk */
|
|
#define DEV_TYPE_TAPE 0x01 /* Tape */
|
|
#define DEV_TYPE_CDROM 0x05 /* CD-ROM */
|
|
#define DEV_TYPE_OPDISK 0x07 /* optical disk */
|
|
|
|
#define PART_NAME_LEN 32
|
|
#define PART_TYPE_LEN 32
|
|
#define MAX_SEARCH_PARTITIONS 64
|
|
|
|
#define PART_BOOTABLE ((int)BIT(0))
|
|
#define PART_EFI_SYSTEM_PARTITION ((int)BIT(1))
|
|
|
|
typedef 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 */
|
|
/*
|
|
* 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
|
|
#ifdef CONFIG_PARTITION_TYPE_GUID
|
|
char type_guid[UUID_STR_LEN + 1]; /* type GUID as string, if exists */
|
|
#endif
|
|
#ifdef CONFIG_DOS_PARTITION
|
|
uchar sys_ind; /* partition type */
|
|
#endif
|
|
} disk_partition_t;
|
|
|
|
struct disk_part {
|
|
int partnum;
|
|
disk_partition_t gpt_part_info;
|
|
struct list_head list;
|
|
};
|
|
|
|
/* Misc _get_dev functions */
|
|
#ifdef CONFIG_PARTITIONS
|
|
/**
|
|
* blk_get_dev() - get a pointer to a block device given its type and number
|
|
*
|
|
* Each interface allocates its own devices and typically struct blk_desc is
|
|
* contained with the interface's data structure. There is no global
|
|
* numbering for block devices, so the interface name must be provided.
|
|
*
|
|
* @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
|
|
* 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);
|
|
/**
|
|
* 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);
|
|
|
|
void part_print(struct blk_desc *dev_desc);
|
|
void part_init(struct blk_desc *dev_desc);
|
|
void dev_print(struct blk_desc *dev_desc);
|
|
|
|
/**
|
|
* blk_get_device_by_str() - Get a block device given its interface/hw partition
|
|
*
|
|
* Each interface allocates its own devices and typically struct blk_desc is
|
|
* contained with the interface's data structure. There is no global
|
|
* numbering for block devices, so the interface name must be provided.
|
|
*
|
|
* The hardware parition is not related to the normal software partitioning
|
|
* of a device - each hardware partition is effectively a separately
|
|
* accessible block device. When a hardware parition is selected on MMC the
|
|
* other hardware partitions become inaccessible. The same block device is
|
|
* used to access all hardware partitions, but its capacity may change when a
|
|
* different hardware partition is selected.
|
|
*
|
|
* When a hardware partition number is given, the block device switches to
|
|
* that hardware partition.
|
|
*
|
|
* @ifname: Interface name (e.g. "ide", "scsi")
|
|
* @dev_str: Device and optional hw partition. This can either be a string
|
|
* containing the device number (e.g. "2") or the device number
|
|
* 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
|
|
*/
|
|
int blk_get_device_by_str(const char *ifname, const char *dev_str,
|
|
struct blk_desc **dev_desc);
|
|
|
|
/**
|
|
* blk_get_device_part_str() - Get a block device and partition
|
|
*
|
|
* This calls blk_get_device_by_str() to look up a device. It also looks up
|
|
* a partition and returns information about it.
|
|
*
|
|
* @dev_part_str is in the format:
|
|
* <dev>.<hw_part>:<part> where <dev> is the device number,
|
|
* <hw_part> is the optional hardware partition number and
|
|
* <part> is the partition number
|
|
*
|
|
* If ifname is "hostfs" then this function returns the sandbox host block
|
|
* device.
|
|
*
|
|
* If ifname is ubi, then this function returns 0, with @info set to a
|
|
* special UBI device.
|
|
*
|
|
* If @dev_part_str is NULL or empty or "-", then this function looks up
|
|
* the "bootdevice" environment variable and uses that string instead.
|
|
*
|
|
* If the partition string is empty then the first partition is used. If the
|
|
* partition string is "auto" then the first bootable partition is used.
|
|
*
|
|
* @ifname: Interface name (e.g. "ide", "scsi")
|
|
* @dev_part_str: Device and partition string
|
|
* @dev_desc: Returns a pointer to the block device on success
|
|
* @info: Returns partition information
|
|
* @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
|
|
*
|
|
*/
|
|
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);
|
|
|
|
/**
|
|
* part_get_info_by_name_type() - Search for a partition by name
|
|
* for only specified partition type
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param gpt_name - the specified table entry 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,
|
|
* otherwise error
|
|
*/
|
|
int part_get_info_by_name_type(struct blk_desc *dev_desc, const char *name,
|
|
disk_partition_t *info, int part_type);
|
|
|
|
/**
|
|
* part_get_info_by_name() - Search for a partition by name
|
|
* among all available registered partitions
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @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,
|
|
* otherwise error
|
|
*/
|
|
int part_get_info_by_name(struct blk_desc *dev_desc,
|
|
const char *name, disk_partition_t *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
|
|
* @return 0 on success, or a negative 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,
|
|
disk_partition_t *part_info);
|
|
|
|
/**
|
|
* part_set_generic_name() - create generic partition like hda1 or sdb2
|
|
*
|
|
* Helper function for partition tables, which don't hold partition names
|
|
* (DOS, ISO). Generates partition name out of the device type and partition
|
|
* number.
|
|
*
|
|
* @dev_desc: pointer to the block device
|
|
* @part_num: partition number for which the name is generated
|
|
* @name: buffer where the name is written
|
|
*/
|
|
void part_set_generic_name(const struct blk_desc *dev_desc,
|
|
int part_num, char *name);
|
|
|
|
extern const struct block_drvr block_drvr[];
|
|
#else
|
|
static inline struct blk_desc *blk_get_dev(const char *ifname, int dev)
|
|
{ return NULL; }
|
|
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; }
|
|
static inline int part_get_info_whole_disk(struct blk_desc *dev_desc,
|
|
disk_partition_t *info)
|
|
{ return -1; }
|
|
static inline void part_print(struct blk_desc *dev_desc) {}
|
|
static inline void part_init(struct blk_desc *dev_desc) {}
|
|
static inline void dev_print(struct blk_desc *dev_desc) {}
|
|
static inline int blk_get_device_by_str(const char *ifname, const char *dev_str,
|
|
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)
|
|
{ *dev_desc = NULL; return -1; }
|
|
#endif
|
|
|
|
/*
|
|
* 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_FS_EXT4) || defined(CONFIG_SPL_FS_FAT) || \
|
|
defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
|
|
# define part_get_info_ptr(x) x
|
|
# else
|
|
# define part_get_info_ptr(x) NULL
|
|
# endif
|
|
#else
|
|
#define part_print_ptr(x) x
|
|
#define part_get_info_ptr(x) x
|
|
#endif
|
|
|
|
|
|
struct part_driver {
|
|
const char *name;
|
|
int part_type;
|
|
const int max_entries; /* maximum number of entries to search */
|
|
|
|
/**
|
|
* get_info() - Get information about a partition
|
|
*
|
|
* @dev_desc: Block device descriptor
|
|
* @part: Partition number (1 = first)
|
|
* @info: Returns partition information
|
|
*/
|
|
int (*get_info)(struct blk_desc *dev_desc, int part,
|
|
disk_partition_t *info);
|
|
|
|
/**
|
|
* print() - Print partition information
|
|
*
|
|
* @dev_desc: Block device descriptor
|
|
*/
|
|
void (*print)(struct blk_desc *dev_desc);
|
|
|
|
/**
|
|
* test() - Test if a device contains this partition type
|
|
*
|
|
* @dev_desc: Block device descriptor
|
|
* @return 0 if the block device appears to contain this partition
|
|
* type, -ve if not
|
|
*/
|
|
int (*test)(struct blk_desc *dev_desc);
|
|
};
|
|
|
|
/* Declare a new U-Boot partition 'driver' */
|
|
#define U_BOOT_PART_TYPE(__name) \
|
|
ll_entry_declare(struct part_driver, __name, part_driver)
|
|
|
|
#include <part_efi.h>
|
|
|
|
#if CONFIG_IS_ENABLED(EFI_PARTITION)
|
|
/* disk/part_efi.c */
|
|
/**
|
|
* write_gpt_table() - Write the GUID Partition Table to disk
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param gpt_h - pointer to GPT header representation
|
|
* @param gpt_e - pointer to GPT partition table entries
|
|
*
|
|
* @return - zero on success, otherwise error
|
|
*/
|
|
int write_gpt_table(struct blk_desc *dev_desc,
|
|
gpt_header *gpt_h, gpt_entry *gpt_e);
|
|
|
|
/**
|
|
* gpt_fill_pte(): Fill the GPT partition table entry
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param gpt_h - GPT header representation
|
|
* @param gpt_e - GPT partition table entries
|
|
* @param partitions - list of partitions
|
|
* @param parts - number of partitions
|
|
*
|
|
* @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);
|
|
|
|
/**
|
|
* gpt_fill_header(): Fill the GPT header
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param gpt_h - GPT header representation
|
|
* @param str_guid - disk guid string representation
|
|
* @param parts_count - number of partitions
|
|
*
|
|
* @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);
|
|
|
|
/**
|
|
* gpt_restore(): Restore GPT partition table
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param str_disk_guid - disk GUID
|
|
* @param partitions - list of partitions
|
|
* @param parts - number of partitions
|
|
*
|
|
* @return zero on success
|
|
*/
|
|
int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid,
|
|
disk_partition_t *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
|
|
*/
|
|
int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf);
|
|
|
|
/**
|
|
* write_mbr_and_gpt_partitions() - write MBR, Primary GPT and Backup GPT
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param buf - buffer which contains the MBR and Primary GPT info
|
|
*
|
|
* @return - '0' on success, otherwise error
|
|
*/
|
|
int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf);
|
|
|
|
/**
|
|
* gpt_verify_headers() - Function to read and CRC32 check of the GPT's header
|
|
* and partition table entries (PTE)
|
|
*
|
|
* As a side effect if sets gpt_head and gpt_pte so they point to GPT data.
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @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
|
|
*/
|
|
int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head,
|
|
gpt_entry **gpt_pte);
|
|
|
|
/**
|
|
* gpt_verify_partitions() - Function to check if partitions' name, start and
|
|
* size correspond to '$partitions' env variable
|
|
*
|
|
* This function checks if on medium stored GPT data is in sync with information
|
|
* provided in '$partitions' environment variable. Specificially, name, start
|
|
* and size of the partition is checked.
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param partitions - partition data read from '$partitions' env variable
|
|
* @param parts - number of partitions read from '$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
|
|
*/
|
|
int gpt_verify_partitions(struct blk_desc *dev_desc,
|
|
disk_partition_t *partitions, int parts,
|
|
gpt_header *gpt_head, gpt_entry **gpt_pte);
|
|
|
|
|
|
/**
|
|
* get_disk_guid() - Function to read the GUID string from a device's GPT
|
|
*
|
|
* This function reads the GUID string from a block device whose descriptor
|
|
* is provided.
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param guid - pre-allocated string in which to return the GUID
|
|
*
|
|
* @return - '0' on success, otherwise error
|
|
*/
|
|
int get_disk_guid(struct blk_desc *dev_desc, char *guid);
|
|
|
|
#endif
|
|
|
|
#if CONFIG_IS_ENABLED(DOS_PARTITION)
|
|
/**
|
|
* is_valid_dos_buf() - Ensure that a DOS MBR image is valid
|
|
*
|
|
* @param buf - buffer which contains the MBR
|
|
*
|
|
* @return - '0' on success, otherwise error
|
|
*/
|
|
int is_valid_dos_buf(void *buf);
|
|
|
|
/**
|
|
* write_mbr_partition() - write DOS MBR
|
|
*
|
|
* @param dev_desc - block device descriptor
|
|
* @param buf - buffer which contains the MBR
|
|
*
|
|
* @return - '0' on success, otherwise error
|
|
*/
|
|
int write_mbr_partition(struct blk_desc *dev_desc, void *buf);
|
|
|
|
#endif
|
|
|
|
|
|
#endif /* _PART_H */
|