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Merge pull request #3662 from cesanta/flash-unlock

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Flash unlock validation on STM32
This commit is contained in:
robertc2000 2026-08-11 16:41:57 +03:00 • committed by GitHub
commit 84553d06a0
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4 changed files with 34 additions and 36 deletions
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35
mongoose.c
View file

@ -12435,11 +12435,9 @@ 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;
}
}
@ -12686,13 +12684,14 @@ 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;
}
}
@ -12872,17 +12871,17 @@ 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
}
}

4
src/ota_stm32f.c
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;
}
}

9
src/ota_stm32h5.c
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;
}
}

22
src/ota_stm32h7.c
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
}
}