/* * (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 #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 /* * 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 */ 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[32]; /* partition name */ uchar type[32]; /* string type description */ int bootable; /* Active/Bootable flag is set */ #ifdef CONFIG_PARTITION_UUIDS char uuid[37]; /* filesystem UUID as string, if exists */ #endif #ifdef CONFIG_PARTITION_TYPE_GUID char type_guid[37]; /* type GUID as string, if exists */ #endif } disk_partition_t; /* 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 *ide_get_dev(int dev); struct blk_desc *sata_get_dev(int dev); struct blk_desc *scsi_get_dev(int dev); struct blk_desc *usb_stor_get_dev(int dev); struct blk_desc *mmc_get_dev(int dev); /** * mmc_select_hwpart() - Select the MMC hardware partiion on an MMC device * * MMC devices can support partitioning at the hardware level. This is quite * separate from the normal idea of software-based partitions. MMC hardware * partitions must be explicitly selected. Once selected only the region of * the device covered by that partition is accessible. * * The MMC standard provides for two boot partitions (numbered 1 and 2), * rpmb (3), and up to 4 addition general-purpose partitions (4-7). * * @dev_num: Block device number (struct blk_desc->dev value) * @hwpart: Hardware partition number to select. 0 means the raw device, * 1 is the first partition, 2 is the second, etc. * @return 0 if OK, other value for an error */ int mmc_select_hwpart(int dev_num, int hwpart); struct blk_desc *systemace_get_dev(int dev); struct blk_desc *mg_disk_get_dev(int dev); struct blk_desc *host_get_dev(int dev); int host_get_dev_err(int dev, struct blk_desc **blk_devp); /* disk/part.c */ int get_partition_info(struct blk_desc *dev_desc, int part, disk_partition_t *info); void print_part(struct blk_desc *dev_desc); void init_part(struct blk_desc *dev_desc); void dev_print(struct blk_desc *dev_desc); int get_device(const char *ifname, const char *dev_str, struct blk_desc **dev_desc); int get_device_and_partition(const char *ifname, const char *dev_part_str, struct blk_desc **dev_desc, disk_partition_t *info, int allow_whole_dev); #else static inline struct blk_desc *blk_get_dev(const char *ifname, int dev) { return NULL; } static inline struct blk_desc *ide_get_dev(int dev) { return NULL; } static inline struct blk_desc *sata_get_dev(int dev) { return NULL; } static inline struct blk_desc *scsi_get_dev(int dev) { return NULL; } static inline struct blk_desc *usb_stor_get_dev(int dev) { return NULL; } static inline struct blk_desc *mmc_get_dev(int dev) { return NULL; } static inline int mmc_select_hwpart(int dev_num, int hwpart) { return -1; } static inline struct blk_desc *systemace_get_dev(int dev) { return NULL; } static inline struct blk_desc *mg_disk_get_dev(int dev) { return NULL; } static inline struct blk_desc *host_get_dev(int dev) { return NULL; } static inline int get_partition_info(struct blk_desc *dev_desc, int part, disk_partition_t *info) { return -1; } static inline void print_part(struct blk_desc *dev_desc) {} static inline void init_part(struct blk_desc *dev_desc) {} static inline void dev_print(struct blk_desc *dev_desc) {} static inline int get_device(const char *ifname, const char *dev_str, struct blk_desc **dev_desc) { return -1; } static inline int get_device_and_partition(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 #ifdef CONFIG_MAC_PARTITION /* disk/part_mac.c */ int get_partition_info_mac(struct blk_desc *dev_desc, int part, disk_partition_t *info); void print_part_mac(struct blk_desc *dev_desc); int test_part_mac(struct blk_desc *dev_desc); #endif #ifdef CONFIG_DOS_PARTITION /* disk/part_dos.c */ int get_partition_info_dos(struct blk_desc *dev_desc, int part, disk_partition_t *info); void print_part_dos(struct blk_desc *dev_desc); int test_part_dos(struct blk_desc *dev_desc); #endif #ifdef CONFIG_ISO_PARTITION /* disk/part_iso.c */ int get_partition_info_iso(struct blk_desc *dev_desc, int part, disk_partition_t *info); void print_part_iso(struct blk_desc *dev_desc); int test_part_iso(struct blk_desc *dev_desc); #endif #ifdef CONFIG_AMIGA_PARTITION /* disk/part_amiga.c */ int get_partition_info_amiga(struct blk_desc *dev_desc, int part, disk_partition_t *info); void print_part_amiga(struct blk_desc *dev_desc); int test_part_amiga(struct blk_desc *dev_desc); #endif #ifdef CONFIG_EFI_PARTITION #include /* disk/part_efi.c */ int get_partition_info_efi(struct blk_desc *dev_desc, int part, disk_partition_t *info); /** * get_partition_info_efi_by_name() - Find the specified GPT partition table entry * * @param dev_desc - block device descriptor * @param gpt_name - the specified table entry name * @param info - returns the disk partition info * * @return - '0' on match, '-1' on no match, otherwise error */ int get_partition_info_efi_by_name(struct blk_desc *dev_desc, const char *name, disk_partition_t *info); void print_part_efi(struct blk_desc *dev_desc); int test_part_efi(struct blk_desc *dev_desc); /** * 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 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(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); #endif #endif /* _PART_H */