diff options
Diffstat (limited to 'include/part.h')
| -rw-r--r-- | include/part.h | 308 |
1 files changed, 186 insertions, 122 deletions
diff --git a/include/part.h b/include/part.h index dc23949ae8..6d8f52049d 100644 --- a/include/part.h +++ b/include/part.h @@ -7,62 +7,14 @@ #ifndef _PART_H #define _PART_H +#include <blk.h> #include <ide.h> -#include <common.h> -struct block_dev_desc { - int if_type; /* type of the interface */ - int dev; /* device number */ - unsigned char part_type; /* partition type */ - unsigned char target; /* target SCSI ID */ - unsigned char lun; /* target LUN */ - unsigned char hwpart; /* HW partition, e.g. for eMMC */ - unsigned char type; /* device type */ - unsigned char removable; /* removable device */ -#ifdef CONFIG_LBA48 - unsigned char lba48; /* device can use 48bit addr (ATA/ATAPI v7) */ -#endif - lbaint_t lba; /* number of blocks */ - unsigned long blksz; /* block size */ - int log2blksz; /* for convenience: log2(blksz) */ - char vendor [40+1]; /* IDE model, SCSI Vendor */ - char product[20+1]; /* IDE Serial no, SCSI product */ - char revision[8+1]; /* firmware revision */ - unsigned long (*block_read)(block_dev_desc_t *block_dev, - lbaint_t start, - lbaint_t blkcnt, - void *buffer); - unsigned long (*block_write)(block_dev_desc_t *block_dev, - lbaint_t start, - lbaint_t blkcnt, - const void *buffer); - unsigned long (*block_erase)(block_dev_desc_t *block_dev, - lbaint_t start, - lbaint_t blkcnt); - void *priv; /* driver private struct pointer */ -}; - -#define BLOCK_CNT(size, block_dev_desc) (PAD_COUNT(size, block_dev_desc->blksz)) -#define PAD_TO_BLOCKSIZE(size, block_dev_desc) \ - (PAD_SIZE(size, block_dev_desc->blksz)) #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)) -/* Interface types: */ -#define IF_TYPE_UNKNOWN 0 -#define IF_TYPE_IDE 1 -#define IF_TYPE_SCSI 2 -#define IF_TYPE_ATAPI 3 -#define IF_TYPE_USB 4 -#define IF_TYPE_DOC 5 -#define IF_TYPE_MMC 6 -#define IF_TYPE_SD 7 -#define IF_TYPE_SATA 8 -#define IF_TYPE_HOST 9 -#define IF_TYPE_MAX 10 /* Max number of IF_TYPE_* supported */ - /* Part types */ #define PART_TYPE_UNKNOWN 0x00 #define PART_TYPE_MAC 0x01 @@ -101,91 +53,205 @@ typedef struct disk_partition { /* Misc _get_dev functions */ #ifdef CONFIG_PARTITIONS -block_dev_desc_t *get_dev(const char *ifname, int dev); -block_dev_desc_t* ide_get_dev(int dev); -block_dev_desc_t* sata_get_dev(int dev); -block_dev_desc_t* scsi_get_dev(int dev); -block_dev_desc_t* usb_stor_get_dev(int dev); -block_dev_desc_t* mmc_get_dev(int dev); +/** + * 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); -block_dev_desc_t* systemace_get_dev(int dev); -block_dev_desc_t* mg_disk_get_dev(int dev); -block_dev_desc_t *host_get_dev(int dev); -int host_get_dev_err(int dev, block_dev_desc_t **blk_devp); +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 (block_dev_desc_t * dev_desc, int part, disk_partition_t *info); -void print_part (block_dev_desc_t *dev_desc); -void init_part (block_dev_desc_t *dev_desc); -void dev_print(block_dev_desc_t *dev_desc); -int get_device(const char *ifname, const char *dev_str, - block_dev_desc_t **dev_desc); -int get_device_and_partition(const char *ifname, const char *dev_part_str, - block_dev_desc_t **dev_desc, - disk_partition_t *info, int allow_whole_dev); +int part_get_info(struct blk_desc *dev_desc, int part, 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); #else -static inline block_dev_desc_t *get_dev(const char *ifname, int dev) +static inline struct blk_desc *blk_get_dev(const char *ifname, int dev) { return NULL; } -static inline block_dev_desc_t* ide_get_dev(int dev) { return NULL; } -static inline block_dev_desc_t* sata_get_dev(int dev) { return NULL; } -static inline block_dev_desc_t* scsi_get_dev(int dev) { return NULL; } -static inline block_dev_desc_t* usb_stor_get_dev(int dev) { return NULL; } -static inline block_dev_desc_t* mmc_get_dev(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 block_dev_desc_t* systemace_get_dev(int dev) { return NULL; } -static inline block_dev_desc_t* mg_disk_get_dev(int dev) { return NULL; } -static inline block_dev_desc_t *host_get_dev(int dev) { return NULL; } +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 (block_dev_desc_t * dev_desc, int part, - disk_partition_t *info) { return -1; } -static inline void print_part (block_dev_desc_t *dev_desc) {} -static inline void init_part (block_dev_desc_t *dev_desc) {} -static inline void dev_print(block_dev_desc_t *dev_desc) {} -static inline int get_device(const char *ifname, const char *dev_str, - block_dev_desc_t **dev_desc) +static inline int part_get_info(struct blk_desc *dev_desc, int part, + 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 get_device_and_partition(const char *ifname, +static inline int blk_get_device_part_str(const char *ifname, const char *dev_part_str, - block_dev_desc_t **dev_desc, + 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 (block_dev_desc_t * dev_desc, int part, disk_partition_t *info); -void print_part_mac (block_dev_desc_t *dev_desc); -int test_part_mac (block_dev_desc_t *dev_desc); +/* + * 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_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 -#ifdef CONFIG_DOS_PARTITION -/* disk/part_dos.c */ -int get_partition_info_dos (block_dev_desc_t * dev_desc, int part, disk_partition_t *info); -void print_part_dos (block_dev_desc_t *dev_desc); -int test_part_dos (block_dev_desc_t *dev_desc); -#endif -#ifdef CONFIG_ISO_PARTITION -/* disk/part_iso.c */ -int get_partition_info_iso (block_dev_desc_t * dev_desc, int part, disk_partition_t *info); -void print_part_iso (block_dev_desc_t *dev_desc); -int test_part_iso (block_dev_desc_t *dev_desc); -#endif +struct part_driver { + const char *name; + int part_type; -#ifdef CONFIG_AMIGA_PARTITION -/* disk/part_amiga.c */ -int get_partition_info_amiga (block_dev_desc_t * dev_desc, int part, disk_partition_t *info); -void print_part_amiga (block_dev_desc_t *dev_desc); -int test_part_amiga (block_dev_desc_t *dev_desc); -#endif + /** + * 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) #ifdef CONFIG_EFI_PARTITION #include <part_efi.h> /* disk/part_efi.c */ -int get_partition_info_efi (block_dev_desc_t * dev_desc, int part, disk_partition_t *info); /** - * get_partition_info_efi_by_name() - Find the specified GPT partition table entry + * part_get_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 @@ -193,10 +259,8 @@ int get_partition_info_efi (block_dev_desc_t * dev_desc, int part, disk_partitio * * @return - '0' on match, '-1' on no match, otherwise error */ -int get_partition_info_efi_by_name(block_dev_desc_t *dev_desc, - const char *name, disk_partition_t *info); -void print_part_efi (block_dev_desc_t *dev_desc); -int test_part_efi (block_dev_desc_t *dev_desc); +int part_get_info_efi_by_name(struct blk_desc *dev_desc, + const char *name, disk_partition_t *info); /** * write_gpt_table() - Write the GUID Partition Table to disk @@ -207,7 +271,7 @@ int test_part_efi (block_dev_desc_t *dev_desc); * * @return - zero on success, otherwise error */ -int write_gpt_table(block_dev_desc_t *dev_desc, +int write_gpt_table(struct blk_desc *dev_desc, gpt_header *gpt_h, gpt_entry *gpt_e); /** @@ -233,7 +297,7 @@ int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, * * @return - error on str_guid conversion error */ -int gpt_fill_header(block_dev_desc_t *dev_desc, gpt_header *gpt_h, +int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, char *str_guid, int parts_count); /** @@ -246,7 +310,7 @@ int gpt_fill_header(block_dev_desc_t *dev_desc, gpt_header *gpt_h, * * @return zero on success */ -int gpt_restore(block_dev_desc_t *dev_desc, char *str_disk_guid, +int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid, disk_partition_t *partitions, const int parts_count); /** @@ -257,7 +321,7 @@ int gpt_restore(block_dev_desc_t *dev_desc, char *str_disk_guid, * * @return - '0' on success, otherwise error */ -int is_valid_gpt_buf(block_dev_desc_t *dev_desc, void *buf); +int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf); /** * write_mbr_and_gpt_partitions() - write MBR, Primary GPT and Backup GPT @@ -267,7 +331,7 @@ int is_valid_gpt_buf(block_dev_desc_t *dev_desc, void *buf); * * @return - '0' on success, otherwise error */ -int write_mbr_and_gpt_partitions(block_dev_desc_t *dev_desc, void *buf); +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 @@ -281,7 +345,7 @@ int write_mbr_and_gpt_partitions(block_dev_desc_t *dev_desc, void *buf); * * @return - '0' on success, otherwise error */ -int gpt_verify_headers(block_dev_desc_t *dev_desc, gpt_header *gpt_head, +int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, gpt_entry **gpt_pte); /** @@ -300,7 +364,7 @@ int gpt_verify_headers(block_dev_desc_t *dev_desc, gpt_header *gpt_head, * * @return - '0' on success, otherwise error */ -int gpt_verify_partitions(block_dev_desc_t *dev_desc, +int gpt_verify_partitions(struct blk_desc *dev_desc, disk_partition_t *partitions, int parts, gpt_header *gpt_head, gpt_entry **gpt_pte); #endif |