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Flash unlock validation on STM32

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robert committed 2026-08-11 11:48:19 +03:00
1 parent 9ccfc02a86
commit fa4a2563e5
4 files changed
+34 -36
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mongoose.c
+17 -18
View File
@@ -12433,11 +12433,9 @@ MG_IRAM static int is_dualbank(void) {
}
MG_IRAM static void flash_unlock(void) {
static bool unlocked = false;
if (unlocked == false) {
if (MG_REG(MG_FLASH_BASE + MG_FLASH_CR) & MG_BIT(31)) {
MG_REG(MG_FLASH_BASE + MG_FLASH_KEYR) = 0x45670123;
MG_REG(MG_FLASH_BASE + MG_FLASH_KEYR) = 0xcdef89ab;
unlocked = true;
}
}
@@ -12684,13 +12682,14 @@ static uint32_t sectors_per_bank(void) {
}
static void flash_unlock(void) {
static bool unlocked = false;
if (unlocked == false) {
if (MG_REG(FLASH_NSCR) & MG_BIT(0)) {
MG_REG(FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_KEYR) = 0Xcdef89ab;
MG_REG(FLASH_KEYR) = 0xcdef89ab;
}
if (MG_REG(FLASH_OPTCR) & MG_BIT(0)) {
MG_REG(FLASH_OPTKEYR) = 0x08192a3b;
MG_REG(FLASH_OPTKEYR) = 0x4c5d6e7f;
unlocked = true;
}
}
@@ -12870,17 +12869,17 @@ MG_IRAM static bool is_dualbank(void) {
}
MG_IRAM static void flash_unlock(void) {
static bool unlocked = false;
if (unlocked == false) {
MG_REG(FLASH_BASE1 + FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_BASE1 + FLASH_KEYR) = 0xcdef89ab;
if (is_dualbank()) {
MG_REG(FLASH_BASE2 + FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_BASE2 + FLASH_KEYR) = 0xcdef89ab;
}
MG_REG(FLASH_BASE1 + FLASH_OPTKEYR) = 0x08192a3b; // opt reg is "shared"
MG_REG(FLASH_BASE1 + FLASH_OPTKEYR) = 0x4c5d6e7f; // thus unlock once
unlocked = true;
if (MG_REG(FLASH_BASE1 + FLASH_CR) & MG_BIT(0)) {
MG_REG(FLASH_BASE1 + FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_BASE1 + FLASH_KEYR) = 0xcdef89ab;
}
if (is_dualbank() && MG_REG(FLASH_BASE2 + FLASH_CR) & MG_BIT(0)) {
MG_REG(FLASH_BASE2 + FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_BASE2 + FLASH_KEYR) = 0xcdef89ab;
}
if (MG_REG(FLASH_BASE1 + FLASH_OPTCR) & MG_BIT(0)) {
MG_REG(FLASH_BASE1 + FLASH_OPTKEYR) = 0x08192a3b; // opt reg is "shared"
MG_REG(FLASH_BASE1 + FLASH_OPTKEYR) = 0x4c5d6e7f; // thus unlock once
}
}
src/ota_stm32f.c
+1 -3
View File
@@ -45,11 +45,9 @@ MG_IRAM static int is_dualbank(void) {
}
MG_IRAM static void flash_unlock(void) {
static bool unlocked = false;
if (unlocked == false) {
if (MG_REG(MG_FLASH_BASE + MG_FLASH_CR) & MG_BIT(31)) {
MG_REG(MG_FLASH_BASE + MG_FLASH_KEYR) = 0x45670123;
MG_REG(MG_FLASH_BASE + MG_FLASH_KEYR) = 0xcdef89ab;
unlocked = true;
}
}
src/ota_stm32h5.c
+5 -4
View File
@@ -39,13 +39,14 @@ static uint32_t sectors_per_bank(void) {
}
static void flash_unlock(void) {
static bool unlocked = false;
if (unlocked == false) {
if (MG_REG(FLASH_NSCR) & MG_BIT(0)) {
MG_REG(FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_KEYR) = 0Xcdef89ab;
MG_REG(FLASH_KEYR) = 0xcdef89ab;
}
if (MG_REG(FLASH_OPTCR) & MG_BIT(0)) {
MG_REG(FLASH_OPTKEYR) = 0x08192a3b;
MG_REG(FLASH_OPTKEYR) = 0x4c5d6e7f;
unlocked = true;
}
}
src/ota_stm32h7.c
+11 -11
View File
@@ -53,17 +53,17 @@ MG_IRAM static bool is_dualbank(void) {
}
MG_IRAM static void flash_unlock(void) {
static bool unlocked = false;
if (unlocked == false) {
MG_REG(FLASH_BASE1 + FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_BASE1 + FLASH_KEYR) = 0xcdef89ab;
if (is_dualbank()) {
MG_REG(FLASH_BASE2 + FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_BASE2 + FLASH_KEYR) = 0xcdef89ab;
}
MG_REG(FLASH_BASE1 + FLASH_OPTKEYR) = 0x08192a3b; // opt reg is "shared"
MG_REG(FLASH_BASE1 + FLASH_OPTKEYR) = 0x4c5d6e7f; // thus unlock once
unlocked = true;
if (MG_REG(FLASH_BASE1 + FLASH_CR) & MG_BIT(0)) {
MG_REG(FLASH_BASE1 + FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_BASE1 + FLASH_KEYR) = 0xcdef89ab;
}
if (is_dualbank() && MG_REG(FLASH_BASE2 + FLASH_CR) & MG_BIT(0)) {
MG_REG(FLASH_BASE2 + FLASH_KEYR) = 0x45670123;
MG_REG(FLASH_BASE2 + FLASH_KEYR) = 0xcdef89ab;
}
if (MG_REG(FLASH_BASE1 + FLASH_OPTCR) & MG_BIT(0)) {
MG_REG(FLASH_BASE1 + FLASH_OPTKEYR) = 0x08192a3b; // opt reg is "shared"
MG_REG(FLASH_BASE1 + FLASH_OPTKEYR) = 0x4c5d6e7f; // thus unlock once
}
}