diff options
Diffstat (limited to 'src/include/cbfs.h')
| -rw-r--r-- | src/include/cbfs.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/include/cbfs.h b/src/include/cbfs.h index 43d8123454..6c79625f72 100644 --- a/src/include/cbfs.h +++ b/src/include/cbfs.h @@ -55,6 +55,11 @@ * section), even when running in an RW stage from one of the RW CBFSs. Only relevant if * CONFIG(VBOOT) is set. * + * ..._unverified_area_...: Will look for the CBFS file in the named FMAP area, rather than + * any of the default (RO or RW) CBFSs. Files accessed this way are *not* verified in any + * way (even if CONFIG(CBFS_VERIFICATION) is enabled) and should always be treated as + * untrusted (potentially malicious) data. Mutually exclusive with the ..._ro_... variant. + * * ..._type_...: May pass in an extra enum cbfs_type *type parameter. If the value it points to * is CBFS_TYPE_QUERY, it will be replaced with the actual CBFS type of the found file. If * it is anything else, the type will be compared with the actually found type, and the @@ -76,11 +81,15 @@ static inline size_t cbfs_type_load(const char *name, void *buf, size_t size, enum cbfs_type *type); static inline size_t cbfs_ro_type_load(const char *name, void *buf, size_t size, enum cbfs_type *type); +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_type_map(const char *name, size_t *size_out, enum cbfs_type *type); static inline void *cbfs_ro_type_map(const char *name, size_t *size_out, enum cbfs_type *type); +static inline void *cbfs_unverified_area_map(const char *area, const char *name, + size_t *size_out); static inline void *cbfs_alloc(const char *name, cbfs_allocator_t allocator, void *arg, size_t *size_out); @@ -90,6 +99,9 @@ static inline void *cbfs_type_alloc(const char *name, cbfs_allocator_t allocator size_t *size_out, enum cbfs_type *type); static inline void *cbfs_ro_type_alloc(const char *name, cbfs_allocator_t allocator, void *arg, size_t *size_out, enum cbfs_type *type); +static inline void *cbfs_unverified_area_alloc(const char *area, const char *name, + cbfs_allocator_t allocator, void *arg, + size_t *size_out); static inline void *cbfs_cbmem_alloc(const char *name, uint32_t cbmem_id, size_t *size_out); static inline void *cbfs_ro_cbmem_alloc(const char *name, uint32_t cbmem_id, size_t *size_out); @@ -97,6 +109,8 @@ static inline void *cbfs_type_cbmem_alloc(const char *name, uint32_t cbmem_id, s enum cbfs_type *type); static inline void *cbfs_ro_type_cbmem_alloc(const char *name, uint32_t cbmem_id, size_t *size_out, enum cbfs_type *type); +static inline void *cbfs_unverified_area_cbmem_alloc(const char *area, const char *name, + uint32_t cbmem_id, size_t *size_out); /* * Starts the processes of preloading a file into RAM. @@ -194,6 +208,9 @@ cb_err_t _cbfs_boot_lookup(const char *name, bool force_ro, void *_cbfs_alloc(const char *name, cbfs_allocator_t allocator, void *arg, size_t *size_out, bool force_ro, enum cbfs_type *type); +void *_cbfs_unverified_area_alloc(const char *area, const char *name, + cbfs_allocator_t allocator, void *arg, size_t *size_out); + struct _cbfs_default_allocator_arg { void *buf; size_t buf_size; @@ -229,6 +246,13 @@ static inline void *cbfs_ro_type_alloc(const char *name, cbfs_allocator_t alloca return _cbfs_alloc(name, allocator, arg, size_out, true, type); } +static inline void *cbfs_unverified_area_alloc(const char *area, const char *name, + cbfs_allocator_t allocator, void *arg, + size_t *size_out) +{ + return _cbfs_unverified_area_alloc(area, name, allocator, arg, size_out); +} + static inline void *cbfs_map(const char *name, size_t *size_out) { return cbfs_type_map(name, size_out, NULL); @@ -249,6 +273,12 @@ static inline void *cbfs_ro_type_map(const char *name, size_t *size_out, enum cb return cbfs_ro_type_alloc(name, NULL, NULL, size_out, type); } +static inline void *cbfs_unverified_area_map(const char *area, const char *name, + size_t *size_out) +{ + return _cbfs_unverified_area_alloc(area, name, NULL, NULL, size_out); +} + static inline size_t _cbfs_load(const char *name, void *buf, size_t size, bool force_ro, enum cbfs_type *type) { @@ -281,6 +311,16 @@ static inline size_t cbfs_ro_type_load(const char *name, void *buf, size_t size, return _cbfs_load(name, buf, size, true, type); } +static inline size_t cbfs_unverified_area_load(const char *area, const char *name, + void *buf, size_t size) +{ + struct _cbfs_default_allocator_arg arg = { .buf = buf, .buf_size = size }; + if (_cbfs_unverified_area_alloc(area, name, _cbfs_default_allocator, &arg, &size)) + return size; + else + return 0; +} + static inline void *cbfs_cbmem_alloc(const char *name, uint32_t cbmem_id, size_t *size_out) { return cbfs_type_cbmem_alloc(name, cbmem_id, size_out, NULL); @@ -305,6 +345,13 @@ static inline void *cbfs_ro_type_cbmem_alloc(const char *name, uint32_t cbmem_id size_out, type); } +static inline void *cbfs_unverified_area_cbmem_alloc(const char *area, const char *name, + uint32_t cbmem_id, size_t *size_out) +{ + return _cbfs_unverified_area_alloc(area, name, _cbfs_cbmem_allocator, + (void *)(uintptr_t)cbmem_id, size_out); +} + static inline size_t cbfs_get_size(const char *name) { union cbfs_mdata mdata; |