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/* SPDX-License-Identifier: BSD-3-Clause */
#ifndef _CBFS_H_
#define _CBFS_H_
#include <commonlib/bsd/cb_err.h>
#include <commonlib/bsd/cbfs_mdata.h>
#include <endian.h>
#include <stdbool.h>
/**********************************************************************************************
* CBFS FILE ACCESS APIs *
**********************************************************************************************/
/* For documentation look in src/include/cbfs.h file in the main coreboot source tree. */
static inline size_t cbfs_load(const char *name, void *buf, size_t size);
static inline size_t cbfs_ro_load(const char *name, void *buf, size_t size);
static inline size_t cbfs_unverified_area_load(const char *area, const char *name, void *buf,
size_t size);
static inline void *cbfs_map(const char *name, size_t *size_out);
static inline void *cbfs_ro_map(const char *name, size_t *size_out);
static inline void *cbfs_unverified_area_map(const char *area, const char *name,
size_t *size_out);
void cbfs_unmap(void *mapping);
static inline size_t cbfs_get_size(const char *name);
static inline size_t cbfs_ro_get_size(const char *name);
static inline enum cbfs_type cbfs_get_type(const char *name);
static inline enum cbfs_type cbfs_ro_get_type(const char *name);
static inline bool cbfs_file_exists(const char *name);
static inline bool cbfs_ro_file_exists(const char *name);
/**********************************************************************************************
* INTERNAL HELPERS FOR INLINES, DO NOT USE. *
**********************************************************************************************/
ssize_t _cbfs_boot_lookup(const char *name, bool force_ro, union cbfs_mdata *mdata);
void *_cbfs_load(const char *name, void *buf, size_t *size_inout, bool force_ro);
void *_cbfs_unverified_area_load(const char *area, const char *name, void *buf,
size_t *size_inout);
/**********************************************************************************************
* INLINE IMPLEMENTATIONS *
**********************************************************************************************/
static inline void *cbfs_map(const char *name, size_t *size_out)
{
return _cbfs_load(name, NULL, size_out, false);
}
static inline void *cbfs_ro_map(const char *name, size_t *size_out)
{
return _cbfs_load(name, NULL, size_out, true);
}
static inline void *cbfs_unverified_area_map(const char *area, const char *name,
size_t *size_out)
{
return _cbfs_unverified_area_load(area, name, NULL, size_out);
}
static inline size_t cbfs_load(const char *name, void *buf, size_t size)
{
if (_cbfs_load(name, buf, &size, false))
return size;
else
return 0;
}
static inline size_t cbfs_ro_load(const char *name, void *buf, size_t size)
{
if (_cbfs_load(name, buf, &size, true))
return size;
else
return 0;
}
static inline size_t cbfs_unverified_area_load(const char *area, const char *name, void *buf,
size_t size)
{
if (_cbfs_unverified_area_load(area, name, buf, &size))
return size;
else
return 0;
}
static inline size_t cbfs_get_size(const char *name)
{
union cbfs_mdata mdata;
if (_cbfs_boot_lookup(name, false, &mdata) < 0)
return 0;
else
return be32toh(mdata.h.len);
}
static inline size_t cbfs_ro_get_size(const char *name)
{
union cbfs_mdata mdata;
if (_cbfs_boot_lookup(name, true, &mdata) < 0)
return 0;
else
return be32toh(mdata.h.len);
}
static inline enum cbfs_type cbfs_get_type(const char *name)
{
union cbfs_mdata mdata;
if (_cbfs_boot_lookup(name, false, &mdata) < 0)
return CBFS_TYPE_NULL;
else
return be32toh(mdata.h.type);
}
static inline enum cbfs_type cbfs_ro_get_type(const char *name)
{
union cbfs_mdata mdata;
if (_cbfs_boot_lookup(name, true, &mdata) < 0)
return CBFS_TYPE_NULL;
else
return be32toh(mdata.h.type);
}
static inline bool cbfs_file_exists(const char *name)
{
union cbfs_mdata mdata;
return _cbfs_boot_lookup(name, false, &mdata) >= 0;
}
static inline bool cbfs_ro_file_exists(const char *name)
{
union cbfs_mdata mdata;
return _cbfs_boot_lookup(name, true, &mdata) >= 0;
}
#endif
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