mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-31 20:18:18 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
/*
|
|
* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _SYS_ZAP_IMPL_H
|
|
#define _SYS_ZAP_IMPL_H
|
|
|
|
#define ZAP_MAGIC 0x2F52AB2ABULL
|
|
|
|
#define ZAP_HASHBITS 28
|
|
#define MZAP_ENT_LEN 64
|
|
#define MZAP_NAME_LEN (MZAP_ENT_LEN - 8 - 4 - 2)
|
|
#define MZAP_MAX_BLKSHIFT SPA_MAXBLOCKSHIFT
|
|
#define MZAP_MAX_BLKSZ (1 << MZAP_MAX_BLKSHIFT)
|
|
|
|
typedef struct mzap_ent_phys {
|
|
uint64_t mze_value;
|
|
uint32_t mze_cd;
|
|
uint16_t mze_pad; /* in case we want to chain them someday */
|
|
char mze_name[MZAP_NAME_LEN];
|
|
} mzap_ent_phys_t;
|
|
|
|
typedef struct mzap_phys {
|
|
uint64_t mz_block_type; /* ZBT_MICRO */
|
|
uint64_t mz_salt;
|
|
uint64_t mz_pad[6];
|
|
mzap_ent_phys_t mz_chunk[1];
|
|
/* actually variable size depending on block size */
|
|
} mzap_phys_t;
|
|
|
|
/*
|
|
* The (fat) zap is stored in one object. It is an array of
|
|
* 1<<FZAP_BLOCK_SHIFT byte blocks. The layout looks like one of:
|
|
*
|
|
* ptrtbl fits in first block:
|
|
* [zap_phys_t zap_ptrtbl_shift < 6] [zap_leaf_t] ...
|
|
*
|
|
* ptrtbl too big for first block:
|
|
* [zap_phys_t zap_ptrtbl_shift >= 6] [zap_leaf_t] [ptrtbl] ...
|
|
*
|
|
*/
|
|
|
|
#define ZBT_LEAF ((1ULL << 63) + 0)
|
|
#define ZBT_HEADER ((1ULL << 63) + 1)
|
|
#define ZBT_MICRO ((1ULL << 63) + 3)
|
|
/* any other values are ptrtbl blocks */
|
|
|
|
/*
|
|
* the embedded pointer table takes up half a block:
|
|
* block size / entry size (2^3) / 2
|
|
*/
|
|
#define ZAP_EMBEDDED_PTRTBL_SHIFT(zap) (FZAP_BLOCK_SHIFT(zap) - 3 - 1)
|
|
|
|
/*
|
|
* The embedded pointer table starts half-way through the block. Since
|
|
* the pointer table itself is half the block, it starts at (64-bit)
|
|
* word number (1<<ZAP_EMBEDDED_PTRTBL_SHIFT(zap)).
|
|
*/
|
|
#define ZAP_EMBEDDED_PTRTBL_ENT(zap, idx) \
|
|
((uint64_t *)(zap)->zap_f.zap_phys) \
|
|
[(idx) + (1<<ZAP_EMBEDDED_PTRTBL_SHIFT(zap))]
|
|
|
|
/*
|
|
* TAKE NOTE:
|
|
* If zap_phys_t is modified, zap_byteswap() must be modified.
|
|
*/
|
|
typedef struct zap_phys {
|
|
uint64_t zap_block_type; /* ZBT_HEADER */
|
|
uint64_t zap_magic; /* ZAP_MAGIC */
|
|
|
|
struct zap_table_phys {
|
|
uint64_t zt_blk; /* starting block number */
|
|
uint64_t zt_numblks; /* number of blocks */
|
|
uint64_t zt_shift; /* bits to index it */
|
|
uint64_t zt_nextblk; /* next (larger) copy start block */
|
|
uint64_t zt_blks_copied; /* number source blocks copied */
|
|
} zap_ptrtbl;
|
|
|
|
uint64_t zap_freeblk; /* the next free block */
|
|
uint64_t zap_num_leafs; /* number of leafs */
|
|
uint64_t zap_num_entries; /* number of entries */
|
|
uint64_t zap_salt; /* salt to stir into hash function */
|
|
uint64_t zap_normflags; /* flags for u8_textprep_str() */
|
|
uint64_t zap_flags; /* zap_flag_t */
|
|
/*
|
|
* This structure is followed by padding, and then the embedded
|
|
* pointer table. The embedded pointer table takes up second
|
|
* half of the block. It is accessed using the
|
|
* ZAP_EMBEDDED_PTRTBL_ENT() macro.
|
|
*/
|
|
} zap_phys_t;
|
|
|
|
#endif /* _SYS_ZAP_IMPL_H */
|