upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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668 lines
20 KiB
668 lines
20 KiB
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#ifndef BLK_H
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#define BLK_H
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#include <efi.h>
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#ifdef CONFIG_SYS_64BIT_LBA
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typedef uint64_t lbaint_t;
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#define LBAFlength "ll"
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#else
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typedef ulong lbaint_t;
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#define LBAFlength "l"
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#endif
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#define LBAF "%" LBAFlength "x"
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#define LBAFU "%" LBAFlength "u"
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/* Interface types: */
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enum if_type {
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IF_TYPE_UNKNOWN = 0,
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IF_TYPE_IDE,
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IF_TYPE_SCSI,
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IF_TYPE_ATAPI,
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IF_TYPE_USB,
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IF_TYPE_DOC,
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IF_TYPE_MMC,
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IF_TYPE_SD,
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IF_TYPE_SATA,
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IF_TYPE_HOST,
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IF_TYPE_NVME,
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IF_TYPE_EFI,
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IF_TYPE_COUNT, /* Number of interface types */
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};
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#define BLK_VEN_SIZE 40
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#define BLK_PRD_SIZE 20
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#define BLK_REV_SIZE 8
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/*
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* Identifies the partition table type (ie. MBR vs GPT GUID) signature
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*/
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enum sig_type {
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SIG_TYPE_NONE,
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SIG_TYPE_MBR,
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SIG_TYPE_GUID,
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SIG_TYPE_COUNT /* Number of signature types */
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};
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/*
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* With driver model (CONFIG_BLK) this is uclass platform data, accessible
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* with dev_get_uclass_platdata(dev)
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*/
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struct blk_desc {
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/*
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* TODO: With driver model we should be able to use the parent
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* device's uclass instead.
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*/
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enum if_type if_type; /* type of the interface */
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int devnum; /* device number */
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unsigned char part_type; /* partition type */
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unsigned char target; /* target SCSI ID */
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unsigned char lun; /* target LUN */
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unsigned char hwpart; /* HW partition, e.g. for eMMC */
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unsigned char type; /* device type */
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unsigned char removable; /* removable device */
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#ifdef CONFIG_LBA48
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/* device can use 48bit addr (ATA/ATAPI v7) */
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unsigned char lba48;
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#endif
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lbaint_t lba; /* number of blocks */
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unsigned long blksz; /* block size */
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int log2blksz; /* for convenience: log2(blksz) */
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char vendor[BLK_VEN_SIZE + 1]; /* device vendor string */
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char product[BLK_PRD_SIZE + 1]; /* device product number */
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char revision[BLK_REV_SIZE + 1]; /* firmware revision */
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enum sig_type sig_type; /* Partition table signature type */
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union {
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uint32_t mbr_sig; /* MBR integer signature */
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efi_guid_t guid_sig; /* GPT GUID Signature */
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};
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#if CONFIG_IS_ENABLED(BLK)
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/*
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* For now we have a few functions which take struct blk_desc as a
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* parameter. This field allows them to look up the associated
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* device. Once these functions are removed we can drop this field.
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*/
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struct udevice *bdev;
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#else
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unsigned long (*block_read)(struct blk_desc *block_dev,
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lbaint_t start,
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lbaint_t blkcnt,
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void *buffer);
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unsigned long (*block_write)(struct blk_desc *block_dev,
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lbaint_t start,
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lbaint_t blkcnt,
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const void *buffer);
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unsigned long (*block_erase)(struct blk_desc *block_dev,
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lbaint_t start,
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lbaint_t blkcnt);
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void *priv; /* driver private struct pointer */
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#endif
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};
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#define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz))
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#define PAD_TO_BLOCKSIZE(size, blk_desc) \
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(PAD_SIZE(size, blk_desc->blksz))
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#if CONFIG_IS_ENABLED(BLOCK_CACHE)
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/**
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* blkcache_read() - attempt to read a set of blocks from cache
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*
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* @param iftype - IF_TYPE_x for type of device
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* @param dev - device index of particular type
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* @param start - starting block number
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* @param blkcnt - number of blocks to read
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* @param blksz - size in bytes of each block
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* @param buf - buffer to contain cached data
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*
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* @return - '1' if block returned from cache, '0' otherwise.
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*/
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int blkcache_read(int iftype, int dev,
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lbaint_t start, lbaint_t blkcnt,
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unsigned long blksz, void *buffer);
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/**
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* blkcache_fill() - make data read from a block device available
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* to the block cache
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*
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* @param iftype - IF_TYPE_x for type of device
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* @param dev - device index of particular type
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* @param start - starting block number
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* @param blkcnt - number of blocks available
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* @param blksz - size in bytes of each block
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* @param buf - buffer containing data to cache
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*
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*/
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void blkcache_fill(int iftype, int dev,
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lbaint_t start, lbaint_t blkcnt,
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unsigned long blksz, void const *buffer);
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/**
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* blkcache_invalidate() - discard the cache for a set of blocks
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* because of a write or device (re)initialization.
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*
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* @param iftype - IF_TYPE_x for type of device
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* @param dev - device index of particular type
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*/
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void blkcache_invalidate(int iftype, int dev);
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/**
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* blkcache_configure() - configure block cache
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*
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* @param blocks - maximum blocks per entry
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* @param entries - maximum entries in cache
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*/
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void blkcache_configure(unsigned blocks, unsigned entries);
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/*
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* statistics of the block cache
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*/
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struct block_cache_stats {
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unsigned hits;
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unsigned misses;
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unsigned entries; /* current entry count */
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unsigned max_blocks_per_entry;
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unsigned max_entries;
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};
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/**
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* get_blkcache_stats() - return statistics and reset
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*
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* @param stats - statistics are copied here
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*/
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void blkcache_stats(struct block_cache_stats *stats);
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#else
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static inline int blkcache_read(int iftype, int dev,
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lbaint_t start, lbaint_t blkcnt,
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unsigned long blksz, void *buffer)
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{
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return 0;
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}
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static inline void blkcache_fill(int iftype, int dev,
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lbaint_t start, lbaint_t blkcnt,
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unsigned long blksz, void const *buffer) {}
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static inline void blkcache_invalidate(int iftype, int dev) {}
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#endif
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#if CONFIG_IS_ENABLED(BLK)
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struct udevice;
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/* Operations on block devices */
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struct blk_ops {
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/**
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* read() - read from a block device
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*
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* @dev: Device to read from
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* @start: Start block number to read (0=first)
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* @blkcnt: Number of blocks to read
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* @buffer: Destination buffer for data read
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* @return number of blocks read, or -ve error number (see the
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* IS_ERR_VALUE() macro
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*/
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unsigned long (*read)(struct udevice *dev, lbaint_t start,
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lbaint_t blkcnt, void *buffer);
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/**
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* write() - write to a block device
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*
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* @dev: Device to write to
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* @start: Start block number to write (0=first)
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* @blkcnt: Number of blocks to write
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* @buffer: Source buffer for data to write
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* @return number of blocks written, or -ve error number (see the
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* IS_ERR_VALUE() macro
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*/
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unsigned long (*write)(struct udevice *dev, lbaint_t start,
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lbaint_t blkcnt, const void *buffer);
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/**
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* erase() - erase a section of a block device
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*
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* @dev: Device to (partially) erase
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* @start: Start block number to erase (0=first)
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* @blkcnt: Number of blocks to erase
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* @return number of blocks erased, or -ve error number (see the
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* IS_ERR_VALUE() macro
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*/
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unsigned long (*erase)(struct udevice *dev, lbaint_t start,
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lbaint_t blkcnt);
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/**
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* select_hwpart() - select a particular hardware partition
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*
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* Some devices (e.g. MMC) can support partitioning at the hardware
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* level. This is quite separate from the normal idea of
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* software-based partitions. MMC hardware partitions must be
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* explicitly selected. Once selected only the region of the device
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* covered by that partition is accessible.
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*
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* The MMC standard provides for two boot partitions (numbered 1 and 2),
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* rpmb (3), and up to 4 addition general-purpose partitions (4-7).
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*
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* @desc: Block device to update
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* @hwpart: Hardware partition number to select. 0 means the raw
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* device, 1 is the first partition, 2 is the second, etc.
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* @return 0 if OK, -ve on error
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*/
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int (*select_hwpart)(struct udevice *dev, int hwpart);
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};
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#define blk_get_ops(dev) ((struct blk_ops *)(dev)->driver->ops)
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/*
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* These functions should take struct udevice instead of struct blk_desc,
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* but this is convenient for migration to driver model. Add a 'd' prefix
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* to the function operations, so that blk_read(), etc. can be reserved for
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* functions with the correct arguments.
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*/
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unsigned long blk_dread(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt, void *buffer);
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unsigned long blk_dwrite(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt, const void *buffer);
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unsigned long blk_derase(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt);
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/**
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* blk_find_device() - Find a block device
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*
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* This function does not activate the device. The device will be returned
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* whether or not it is activated.
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*
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* @if_type: Interface type (enum if_type_t)
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* @devnum: Device number (specific to each interface type)
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* @devp: the device, if found
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* @return 0 if found, -ENODEV if no device found, or other -ve error value
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*/
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int blk_find_device(int if_type, int devnum, struct udevice **devp);
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/**
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* blk_get_device() - Find and probe a block device ready for use
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*
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* @if_type: Interface type (enum if_type_t)
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* @devnum: Device number (specific to each interface type)
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* @devp: the device, if found
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* @return 0 if found, -ENODEV if no device found, or other -ve error value
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*/
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int blk_get_device(int if_type, int devnum, struct udevice **devp);
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/**
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* blk_first_device() - Find the first device for a given interface
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*
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* The device is probed ready for use
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*
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* @devnum: Device number (specific to each interface type)
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* @devp: the device, if found
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* @return 0 if found, -ENODEV if no device, or other -ve error value
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*/
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int blk_first_device(int if_type, struct udevice **devp);
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/**
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* blk_next_device() - Find the next device for a given interface
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*
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* This can be called repeatedly after blk_first_device() to iterate through
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* all devices of the given interface type.
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*
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* The device is probed ready for use
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*
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* @devp: On entry, the previous device returned. On exit, the next
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* device, if found
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* @return 0 if found, -ENODEV if no device, or other -ve error value
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*/
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int blk_next_device(struct udevice **devp);
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/**
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* blk_create_device() - Create a new block device
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*
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* @parent: Parent of the new device
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* @drv_name: Driver name to use for the block device
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* @name: Name for the device
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* @if_type: Interface type (enum if_type_t)
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* @devnum: Device number, specific to the interface type, or -1 to
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* allocate the next available number
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* @blksz: Block size of the device in bytes (typically 512)
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* @lba: Total number of blocks of the device
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* @devp: the new device (which has not been probed)
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*/
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int blk_create_device(struct udevice *parent, const char *drv_name,
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const char *name, int if_type, int devnum, int blksz,
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lbaint_t lba, struct udevice **devp);
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/**
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* blk_create_devicef() - Create a new named block device
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*
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* @parent: Parent of the new device
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* @drv_name: Driver name to use for the block device
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* @name: Name for the device (parent name is prepended)
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* @if_type: Interface type (enum if_type_t)
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* @devnum: Device number, specific to the interface type, or -1 to
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* allocate the next available number
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* @blksz: Block size of the device in bytes (typically 512)
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* @lba: Total number of blocks of the device
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* @devp: the new device (which has not been probed)
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*/
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int blk_create_devicef(struct udevice *parent, const char *drv_name,
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const char *name, int if_type, int devnum, int blksz,
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lbaint_t lba, struct udevice **devp);
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/**
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* blk_prepare_device() - Prepare a block device for use
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*
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* This reads partition information from the device if supported.
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*
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* @dev: Device to prepare
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* @return 0 if ok, -ve on error
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*/
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int blk_prepare_device(struct udevice *dev);
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/**
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* blk_unbind_all() - Unbind all device of the given interface type
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*
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* The devices are removed and then unbound.
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*
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* @if_type: Interface type to unbind
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* @return 0 if OK, -ve on error
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*/
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int blk_unbind_all(int if_type);
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/**
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* blk_find_max_devnum() - find the maximum device number for an interface type
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*
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* Finds the last allocated device number for an interface type @if_type. The
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* next number is safe to use for a newly allocated device.
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*
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* @if_type: Interface type to scan
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* @return maximum device number found, or -ENODEV if none, or other -ve on
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* error
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*/
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int blk_find_max_devnum(enum if_type if_type);
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/**
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* blk_select_hwpart() - select a hardware partition
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*
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* Select a hardware partition if the device supports it (typically MMC does)
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*
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* @dev: Device to update
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* @hwpart: Partition number to select
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* @return 0 if OK, -ve on error
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*/
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int blk_select_hwpart(struct udevice *dev, int hwpart);
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/**
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* blk_get_from_parent() - obtain a block device by looking up its parent
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*
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* All devices with
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*/
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int blk_get_from_parent(struct udevice *parent, struct udevice **devp);
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#else
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#include <errno.h>
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/*
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* These functions should take struct udevice instead of struct blk_desc,
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* but this is convenient for migration to driver model. Add a 'd' prefix
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* to the function operations, so that blk_read(), etc. can be reserved for
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* functions with the correct arguments.
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*/
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static inline ulong blk_dread(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt, void *buffer)
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{
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ulong blks_read;
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if (blkcache_read(block_dev->if_type, block_dev->devnum,
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start, blkcnt, block_dev->blksz, buffer))
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return blkcnt;
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/*
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* We could check if block_read is NULL and return -ENOSYS. But this
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* bloats the code slightly (cause some board to fail to build), and
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* it would be an error to try an operation that does not exist.
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*/
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blks_read = block_dev->block_read(block_dev, start, blkcnt, buffer);
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if (blks_read == blkcnt)
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blkcache_fill(block_dev->if_type, block_dev->devnum,
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start, blkcnt, block_dev->blksz, buffer);
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return blks_read;
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}
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static inline ulong blk_dwrite(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt, const void *buffer)
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{
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blkcache_invalidate(block_dev->if_type, block_dev->devnum);
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return block_dev->block_write(block_dev, start, blkcnt, buffer);
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}
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static inline ulong blk_derase(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt)
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{
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blkcache_invalidate(block_dev->if_type, block_dev->devnum);
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return block_dev->block_erase(block_dev, start, blkcnt);
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}
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/**
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* struct blk_driver - Driver for block interface types
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*
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* This provides access to the block devices for each interface type. One
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* driver should be provided using U_BOOT_LEGACY_BLK() for each interface
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* type that is to be supported.
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*
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* @if_typename: Interface type name
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* @if_type: Interface type
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* @max_devs: Maximum number of devices supported
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* @desc: Pointer to list of devices for this interface type,
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* or NULL to use @get_dev() instead
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*/
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struct blk_driver {
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const char *if_typename;
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enum if_type if_type;
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int max_devs;
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struct blk_desc *desc;
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/**
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* get_dev() - get a pointer to a block device given its number
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*
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* Each interface allocates its own devices and typically
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* struct blk_desc is contained with the interface's data structure.
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* There is no global numbering for block devices. This method allows
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* the device for an interface type to be obtained when @desc is NULL.
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*
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* @devnum: Device number (0 for first device on that interface,
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* 1 for second, etc.
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* @descp: Returns pointer to the block device on success
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* @return 0 if OK, -ve on error
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*/
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int (*get_dev)(int devnum, struct blk_desc **descp);
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/**
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* select_hwpart() - Select a hardware partition
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|
*
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|
* Some devices (e.g. MMC) can support partitioning at the hardware
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|
* level. This is quite separate from the normal idea of
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|
* software-based partitions. MMC hardware partitions must be
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|
* 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).
|
|
* Partition 0 is the main user-data partition.
|
|
*
|
|
* @desc: Block device descriptor
|
|
* @hwpart: Hardware partition number to select. 0 means the main
|
|
* user-data partition, 1 is the first partition, 2 is
|
|
* the second, etc.
|
|
* @return 0 if OK, other value for an error
|
|
*/
|
|
int (*select_hwpart)(struct blk_desc *desc, int hwpart);
|
|
};
|
|
|
|
/*
|
|
* Declare a new U-Boot legacy block driver. New drivers should use driver
|
|
* model (UCLASS_BLK).
|
|
*/
|
|
#define U_BOOT_LEGACY_BLK(__name) \
|
|
ll_entry_declare(struct blk_driver, __name, blk_driver)
|
|
|
|
struct blk_driver *blk_driver_lookup_type(int if_type);
|
|
|
|
#endif /* !CONFIG_BLK */
|
|
|
|
/**
|
|
* blk_get_devnum_by_typename() - Get a block device by type and number
|
|
*
|
|
* This looks through the available block devices of the given type, returning
|
|
* the one with the given @devnum.
|
|
*
|
|
* @if_type: Block device type
|
|
* @devnum: Device number
|
|
* @return point to block device descriptor, or NULL if not found
|
|
*/
|
|
struct blk_desc *blk_get_devnum_by_type(enum if_type if_type, int devnum);
|
|
|
|
/**
|
|
* blk_get_devnum_by_type() - Get a block device by type name, and number
|
|
*
|
|
* This looks up the block device type based on @if_typename, then calls
|
|
* blk_get_devnum_by_type().
|
|
*
|
|
* @if_typename: Block device type name
|
|
* @devnum: Device number
|
|
* @return point to block device descriptor, or NULL if not found
|
|
*/
|
|
struct blk_desc *blk_get_devnum_by_typename(const char *if_typename,
|
|
int devnum);
|
|
|
|
/**
|
|
* blk_dselect_hwpart() - select a hardware partition
|
|
*
|
|
* This selects a hardware partition (such as is supported by MMC). The block
|
|
* device size may change as this effectively points the block device to a
|
|
* partition at the hardware level. See the select_hwpart() method above.
|
|
*
|
|
* @desc: Block device descriptor for the device to select
|
|
* @hwpart: Partition number to select
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int blk_dselect_hwpart(struct blk_desc *desc, int hwpart);
|
|
|
|
/**
|
|
* blk_list_part() - list the partitions for block devices of a given type
|
|
*
|
|
* This looks up the partition type for each block device of type @if_type,
|
|
* then displays a list of partitions.
|
|
*
|
|
* @if_type: Block device type
|
|
* @return 0 if OK, -ENODEV if there is none of that type
|
|
*/
|
|
int blk_list_part(enum if_type if_type);
|
|
|
|
/**
|
|
* blk_list_devices() - list the block devices of a given type
|
|
*
|
|
* This lists each block device of the type @if_type, showing the capacity
|
|
* as well as type-specific information.
|
|
*
|
|
* @if_type: Block device type
|
|
*/
|
|
void blk_list_devices(enum if_type if_type);
|
|
|
|
/**
|
|
* blk_show_device() - show information about a given block device
|
|
*
|
|
* This shows the block device capacity as well as type-specific information.
|
|
*
|
|
* @if_type: Block device type
|
|
* @devnum: Device number
|
|
* @return 0 if OK, -ENODEV for invalid device number
|
|
*/
|
|
int blk_show_device(enum if_type if_type, int devnum);
|
|
|
|
/**
|
|
* blk_print_device_num() - show information about a given block device
|
|
*
|
|
* This is similar to blk_show_device() but returns an error if the block
|
|
* device type is unknown.
|
|
*
|
|
* @if_type: Block device type
|
|
* @devnum: Device number
|
|
* @return 0 if OK, -ENODEV for invalid device number, -ENOENT if the block
|
|
* device is not connected
|
|
*/
|
|
int blk_print_device_num(enum if_type if_type, int devnum);
|
|
|
|
/**
|
|
* blk_print_part_devnum() - print the partition information for a device
|
|
*
|
|
* @if_type: Block device type
|
|
* @devnum: Device number
|
|
* @return 0 if OK, -ENOENT if the block device is not connected, -ENOSYS if
|
|
* the interface type is not supported, other -ve on other error
|
|
*/
|
|
int blk_print_part_devnum(enum if_type if_type, int devnum);
|
|
|
|
/**
|
|
* blk_read_devnum() - read blocks from a device
|
|
*
|
|
* @if_type: Block device type
|
|
* @devnum: Device number
|
|
* @blkcnt: Number of blocks to read
|
|
* @buffer: Address to write data to
|
|
* @return number of blocks read, or -ve error number on error
|
|
*/
|
|
ulong blk_read_devnum(enum if_type if_type, int devnum, lbaint_t start,
|
|
lbaint_t blkcnt, void *buffer);
|
|
|
|
/**
|
|
* blk_write_devnum() - write blocks to a device
|
|
*
|
|
* @if_type: Block device type
|
|
* @devnum: Device number
|
|
* @blkcnt: Number of blocks to write
|
|
* @buffer: Address to read data from
|
|
* @return number of blocks written, or -ve error number on error
|
|
*/
|
|
ulong blk_write_devnum(enum if_type if_type, int devnum, lbaint_t start,
|
|
lbaint_t blkcnt, const void *buffer);
|
|
|
|
/**
|
|
* blk_select_hwpart_devnum() - select a hardware partition
|
|
*
|
|
* This is similar to blk_dselect_hwpart() but it looks up the interface and
|
|
* device number.
|
|
*
|
|
* @if_type: Block device type
|
|
* @devnum: Device number
|
|
* @hwpart: Partition number to select
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart);
|
|
|
|
/**
|
|
* blk_get_if_type_name() - Get the name of an interface type
|
|
*
|
|
* @if_type: Interface type to check
|
|
* @return name of interface, or NULL if none
|
|
*/
|
|
const char *blk_get_if_type_name(enum if_type if_type);
|
|
|
|
/**
|
|
* blk_common_cmd() - handle common commands with block devices
|
|
*
|
|
* @args: Number of arguments to the command (argv[0] is the command itself)
|
|
* @argv: Command arguments
|
|
* @if_type: Interface type
|
|
* @cur_devnump: Current device number for this interface type
|
|
* @return 0 if OK, CMD_RET_ERROR on error
|
|
*/
|
|
int blk_common_cmd(int argc, char * const argv[], enum if_type if_type,
|
|
int *cur_devnump);
|
|
|
|
#endif
|
|
|