diff options
Diffstat (limited to 'firmware/2lib/include/2api.h')
| -rw-r--r-- | firmware/2lib/include/2api.h | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/firmware/2lib/include/2api.h b/firmware/2lib/include/2api.h index 1e6fada4..f338fa41 100644 --- a/firmware/2lib/include/2api.h +++ b/firmware/2lib/include/2api.h @@ -28,8 +28,15 @@ #include "2recovery_reasons.h" #include "2return_codes.h" -/* Size of non-volatile data used by vboot */ +/* + * Size of non-volatile data used by vboot. + * + * If you only support non-volatile data format V1, then use VB2_NVDATA_SIZE. + * If you support V2, use VB2_NVDATA_SIZE_V2 and set context flag + * VB2_CONTEXT_NVDATA_V2. + */ #define VB2_NVDATA_SIZE 16 +#define VB2_NVDATA_SIZE_V2 64 /* Size of secure data spaces used by vboot */ #define VB2_SECDATA_SIZE 10 @@ -158,6 +165,16 @@ enum vb2_context_flags { * software sync. */ VB2_CONTEXT_EC_EFS = (1 << 17), + + /* + * NV storage uses data format V2. Data is size VB2_NVDATA_SIZE_V2, + * not VB2_NVDATA_SIZE. + * + * Caller must set this flag when initializing the context to use V2. + * (Vboot cannot infer the data size from the data itself, because the + * data provided by the caller could be uninitialized.) + */ + VB2_CONTEXT_NVDATA_V2 = (1 << 18), }; /* @@ -190,7 +207,7 @@ struct vb2_context { * vb2api function returns, caller must save the data back to the * non-volatile location and then clear the flag. */ - uint8_t nvdata[VB2_NVDATA_SIZE]; + uint8_t nvdata[VB2_NVDATA_SIZE_V2]; /* * Secure data for firmware verification stage. Caller must fill this |