Source code for the Trusted Boot Module.
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tbm-mcu/include/ftl.h

53 lines
1.3 KiB

#pragma once
#include <macros.h>
struct ftl_page_group {
uint8_t magic[3];
uint8_t epoch;
uint32_t tail;
} __attribute__((packed));
struct ftl_page_desc {
char magic[4];
uint32_t va;
uint32_t nused_pages;
uint32_t subtrees[32];
} __attribute__((packed));
struct ftl_map {
struct flash_dev *dev;
unsigned flags;
uint32_t last_va;
uint32_t last_pa;
uint32_t offset;
uint32_t head, tail;
uint32_t root;
uint32_t nused_pages;
uint32_t nblocks;
uint8_t log2_groups_per_block;
uint8_t log2_pages_per_group;
uint8_t log2_page_size;
uint8_t log2_block_size;
uint8_t log2_erase_size;
uint8_t epoch;
};
#define FTL_CACHED_VA BIT(0)
#define FTL_UNMAPPED BIT(1)
#define FTL_DIRTY BIT(2)
#define FTL_MAX_ATTEMPTS 8
int ftl_init_map(struct ftl_map *map, struct flash_dev *dev);
int ftl_resume_map(struct ftl_map *map);
int ftl_is_mapped(struct ftl_map *map, uint32_t va);
size_t ftl_write(struct ftl_map *map, uint32_t addr, const void *data,
size_t len);
size_t ftl_read(struct ftl_map *map, void *data, size_t len, uint32_t va);
int ftl_sync(struct ftl_map *map);
int ftl_trim(struct ftl_map *map, uint32_t va);
uint32_t ftl_get_size(const struct ftl_map *map);
uint32_t ftl_get_capacity(const struct ftl_map *map);
struct flash_dev *ftl_mount(struct flash_dev *raw_dev);