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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _CBFS_GLUE_H_
#define _CBFS_GLUE_H_
#include <commonlib/region.h>
#include <console/console.h>
#include <security/vboot/misc.h>
#include <rules.h>
/*
* This flag prevents linking hashing functions into stages where they're not required. We don't
* need them at all if verification is disabled. If verification is enabled without TOCTOU
* safety, we only need to verify the metadata hash in the initial stage and can assume it stays
* valid in later stages. If TOCTOU safety is required, we may need them in every stage to
* reverify metadata that had to be reloaded from flash (e.g. because it didn't fit the mcache).
* Note that this only concerns metadata hashing -- file access functions may still link hashing
* routines independently for file data hashing.
*/
#define CBFS_ENABLE_HASHING (CONFIG(CBFS_VERIFICATION) && \
(CONFIG(TOCTOU_SAFETY) || ENV_INITIAL_STAGE))
#define CBFS_HASH_HWCRYPTO vboot_hwcrypto_allowed()
#define ERROR(...) printk(BIOS_ERR, "CBFS ERROR: " __VA_ARGS__)
#define LOG(...) printk(BIOS_INFO, "CBFS: " __VA_ARGS__)
#define DEBUG(...) do { \
if (CONFIG(DEBUG_CBFS)) \
printk(BIOS_SPEW, "CBFS DEBUG: " __VA_ARGS__); \
} while (0)
typedef const struct region_device *cbfs_dev_t;
static inline ssize_t cbfs_dev_read(cbfs_dev_t dev, void *buffer, size_t offset, size_t size)
{
return rdev_readat(dev, buffer, offset, size);
}
static inline size_t cbfs_dev_size(cbfs_dev_t dev)
{
return region_device_sz(dev);
}
#endif /* _CBFS_GLUE_H_ */
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