#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
Go to the source code of this file.
|
|
#define | SEED_RAM_LEN (2048 / sizeof(uint32_t)) |
| | SRAM length considered for seeding.
|
| |
| #define | PUF_SRAM_MARKER (0xad3021ff) |
| | SRAM marker to detect reboot without power-off. More...
|
| |
|
| void | puf_sram_init (const uint8_t *ram, size_t len) |
| | checks source of reboot by puf_sram_softreset and conditionally calls puf_sram_generate More...
|
| |
| void | puf_sram_generate (const uint8_t *ram, size_t len) |
| | builds hash from SEED_RAM_LEN bytes uninitialized SRAM, writes it to the global variable puf_sram_seed and returns the value More...
|
| |
| bool | puf_sram_softreset (void) |
| | checks for a memory marker to determine whether memory contains old data. More...
|
| |
|
|
uint32_t | puf_sram_seed |
| | Global seed variable, allocated in puf_sram.c.
|
| |
| uint32_t | puf_sram_state |
| | Global seed state, allocated in puf_sram.c 0 means seed was generated from SRAM pattern, 1 means missing power cycle detected, 2 means power cycle detected. More...
|
| |
| uint32_t | puf_sram_softreset_cnt |
| | Counter variable allocated in puf_sram.c. More...
|
| |
Include dependency graph for puf_sram.h: