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Commite33d238

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esp8266/modesp: Add check_fw() function to check integrity of the firmware.
Requires firmware generated by the latest makeimg.py (which stores sizeand md5 of the firmware together with the firmware itself).
1 parentbf47b71 commite33d238

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2 files changed

+26
-0
lines changed

2 files changed

+26
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lines changed

‎esp8266/etshal.h‎

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -20,6 +20,13 @@ void ets_timer_arm_new(os_timer_t *tim, uint32_t millis, bool repeat, bool is_mi
2020
voidets_timer_setfn(os_timer_t*tim,ETSTimerFunccallback,void*cb_data);
2121
voidets_timer_disarm(os_timer_t*tim);
2222

23+
// Opaque structure
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typedefcharMD5_CTX[64];
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voidMD5Init(MD5_CTX*context);
27+
voidMD5Update(MD5_CTX*context,constvoid*data,unsignedintlen);
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voidMD5Final(unsignedchardigest[16],MD5_CTX*context);
29+
2330
// These prototypes are for recent SDKs with "malloc tracking"
2431
void*pvPortMalloc(unsignedsz,constchar*fname,intline);
2532
voidvPortFree(void*p,constchar*fname,intline);

‎esp8266/modesp.c‎

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -633,6 +633,24 @@ STATIC mp_obj_t esp_flash_size(void) {
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}
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STATICMP_DEFINE_CONST_FUN_OBJ_0(esp_flash_size_obj,esp_flash_size);
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636+
STATICmp_obj_tesp_check_fw(void) {
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MD5_CTXctx;
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uint32_t*sz_p= (uint32_t*)0x40208ffc;
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printf("size: %d\n",*sz_p);
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MD5Init(&ctx);
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MD5Update(&ctx, (char*)0x40200004,*sz_p-4);
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unsignedchardigest[16];
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MD5Final(digest,&ctx);
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printf("md5: ");
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for (inti=0;i<16;i++) {
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printf("%02x",digest[i]);
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}
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printf("\n");
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returnmp_obj_new_bool(memcmp(digest, (void*)(0x40200000+*sz_p),sizeof(digest))==0);
650+
}
651+
STATICMP_DEFINE_CONST_FUN_OBJ_0(esp_check_fw_obj,esp_check_fw);
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636654
STATICmp_obj_tesp_neopixel_write_(mp_obj_tpin,mp_obj_tbuf,mp_obj_tis800k) {
637655
mp_buffer_info_tbufinfo;
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mp_get_buffer_raise(buf,&bufinfo,MP_BUFFER_READ);
@@ -703,6 +721,7 @@ STATIC const mp_map_elem_t esp_module_globals_table[] = {
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{MP_OBJ_NEW_QSTR(MP_QSTR_dht_readinto), (mp_obj_t)&dht_readinto_obj },
704722
{MP_OBJ_NEW_QSTR(MP_QSTR_freemem), (mp_obj_t)&esp_freemem_obj },
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{MP_OBJ_NEW_QSTR(MP_QSTR_meminfo), (mp_obj_t)&esp_meminfo_obj },
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{MP_OBJ_NEW_QSTR(MP_QSTR_check_fw), (mp_obj_t)&esp_check_fw_obj },
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{MP_OBJ_NEW_QSTR(MP_QSTR_info), (mp_obj_t)&pyb_info_obj },// TODO delete/rename/move elsewhere
707726
{MP_OBJ_NEW_QSTR(MP_QSTR_malloc), (mp_obj_t)&esp_malloc_obj },
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{MP_OBJ_NEW_QSTR(MP_QSTR_free), (mp_obj_t)&esp_free_obj },

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