X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fpart.h;h=b66b07a1f04be8db4d754da6f8dbc23c3cfd2125;hb=be7dbb60c5bfa38ea444fe7de1dca8bd35f83f5b;hp=83bce05a43d601dc3008e40db5ec907b761e8dfb;hpb=5c84ad097d829bb1e6460438f33e1536b23b3c9b;p=platform%2Fkernel%2Fu-boot.git diff --git a/include/part.h b/include/part.h index 83bce05..b66b07a 100644 --- a/include/part.h +++ b/include/part.h @@ -1,14 +1,16 @@ +/* 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 #include +#include +#include +#include struct block_drvr { char *name; @@ -46,23 +48,42 @@ struct block_drvr { #define DEV_TYPE_CDROM 0x05 /* CD-ROM */ #define DEV_TYPE_OPDISK 0x07 /* optical disk */ -typedef struct disk_partition { +#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)) + +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[32]; /* partition name */ - uchar type[32]; /* string type description */ - int bootable; /* Active/Bootable flag is set */ + 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[37]; /* filesystem UUID as string, if exists */ + char uuid[UUID_STR_LEN + 1]; /* filesystem UUID as string, if exists */ #endif #ifdef CONFIG_PARTITION_TYPE_GUID - char type_guid[37]; /* type GUID as string, if exists */ + 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; + struct disk_partition gpt_part_info; + struct list_head list; +}; /* Misc _get_dev functions */ #ifdef CONFIG_PARTITIONS @@ -85,7 +106,15 @@ 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, + struct disk_partition *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); @@ -153,7 +182,22 @@ int blk_get_device_by_str(const char *ifname, const char *dev_str, */ 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 + * 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, + struct disk_partition *info, int part_type); /** * part_get_info_by_name() - Search for a partition by name @@ -167,7 +211,32 @@ int blk_get_device_part_str(const char *ifname, const char *dev_part_str, * 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 @@ -190,7 +259,10 @@ static inline struct blk_desc *blk_get_dev(const char *ifname, int dev) 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, + 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) {} static inline void dev_print(struct blk_desc *dev_desc) {} @@ -198,11 +270,21 @@ 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) + 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_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 /* @@ -211,7 +293,7 @@ static inline int blk_get_device_part_str(const char *ifname, */ #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 @@ -236,7 +318,7 @@ struct part_driver { * @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 @@ -259,8 +341,9 @@ struct part_driver { #define U_BOOT_PART_TYPE(__name) \ ll_entry_declare(struct part_driver, __name, part_driver) -#if CONFIG_IS_ENABLED(EFI_PARTITION) #include + +#if CONFIG_IS_ENABLED(EFI_PARTITION) /* disk/part_efi.c */ /** * write_gpt_table() - Write the GUID Partition Table to disk @@ -277,6 +360,7 @@ int write_gpt_table(struct blk_desc *dev_desc, /** * 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 @@ -284,8 +368,9 @@ int write_gpt_table(struct blk_desc *dev_desc, * * @return zero on success */ -int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, - disk_partition_t *partitions, int parts); +int gpt_fill_pte(struct blk_desc *dev_desc, + gpt_header *gpt_h, gpt_entry *gpt_e, + struct disk_partition *partitions, int parts); /** * gpt_fill_header(): Fill the GPT header @@ -311,7 +396,7 @@ int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, * @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 @@ -365,8 +450,23 @@ int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, * @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); + + +/** + * 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) @@ -380,16 +480,49 @@ int gpt_verify_partitions(struct blk_desc *dev_desc, 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 */ -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 +#ifdef CONFIG_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 */