1 /* 2 * Interface definitions for reversed TLVs 3 * 4 * Copyright (C) 2020, Broadcom. 5 * 6 * Unless you and Broadcom execute a separate written software license 7 * agreement governing use of this software, this software is licensed to you 8 * under the terms of the GNU General Public License version 2 (the "GPL"), 9 * available at http://www.broadcom.com/licenses/GPLv2.php, with the 10 * following added to such license: 11 * 12 * As a special exception, the copyright holders of this software give you 13 * permission to link this software with independent modules, and to copy and 14 * distribute the resulting executable under terms of your choice, provided that 15 * you also meet, for each linked independent module, the terms and conditions of 16 * the license of that module. An independent module is a module which is not 17 * derived from this software. The special exception does not apply to any 18 * modifications of the software. 19 * 20 * 21 * <<Broadcom-WL-IPTag/Dual:>> 22 */ 23 24 #ifndef _dngl_rtlv_h_ 25 #define _dngl_rtlv_h_ 26 27 #include <typedefs.h> 28 29 /* Types of reverse TLVs downloaded to the top of dongle RAM. 30 * A reverse TLV consists of: 31 * data <variable length> 32 * len <4 bytes> 33 * type <4 bytes> 34 */ 35 enum { 36 DNGL_RTLV_TYPE_NONE = 0, 37 /* replaces bcmrand.h BCM_NVRAM_RNG_SIGNATURE */ 38 DNGL_RTLV_TYPE_RNG_SIGNATURE = 0xFEEDC0DEu, /* RNG random data */ 39 DNGL_RTLV_TYPE_FW_SIGNATURE = 0xFEEDFE51, /* FW signature */ 40 DNGL_RTLV_TYPE_NVRAM_SIGNATURE = 0xFEEDFE52, /* NVRAM signature */ 41 DNGL_RTLV_TYPE_FWSIGN_MEM_MAP = 0xFEEDFE53, /* FW signing memory map */ 42 DNGL_RTLV_TYPE_FWSIGN_STATUS = 0xFEEDFE54, /* signature verification status */ 43 DNGL_RTLV_TYPE_END_MARKER = 0xFEED0E2D, /* end of rTLVs marker */ 44 }; 45 typedef uint32 dngl_rtlv_type_t; 46 typedef uint32 dngl_rtlv_len_t; 47 48 /* Search for a reversed TLV with the given type, starting at the given address */ 49 int dngl_rtlv_find(const uint8 *rtlv_ptr, const uint8 *addr_limit, dngl_rtlv_type_t type, 50 dngl_rtlv_len_t *out_len, const uint8 **out_data); 51 52 /* Search for a reversed TLV with the given type, starting at the top of RAM */ 53 int dngl_rtlv_find_from_ramtop(dngl_rtlv_type_t type, dngl_rtlv_len_t *out_len, 54 const uint8 **out_data); 55 56 /* Search for the end of the reversed TLVs at the top of RAM to return the next RAM address */ 57 const uint8* dngl_rtlv_skipall(void); 58 59 #ifdef RTLV_DEBUG 60 void dbg_log_rtlv(const char* str, const void* p1, const void* p2, const void *p3, 61 const void* p4, const void *p5); 62 #else /* RTLV_DEBUG */ 63 #define dbg_log_rtlv(str, p1, p2, p3, p4, p5) 64 #endif /* RTLV_DEBUG */ 65 66 #endif /* _dngl_rtlv_h_ */ 67