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-rw-r--r--plat/st/stm32mp1/stm32mp1_private.c788
1 files changed, 788 insertions, 0 deletions
diff --git a/plat/st/stm32mp1/stm32mp1_private.c b/plat/st/stm32mp1/stm32mp1_private.c
new file mode 100644
index 0000000..9bdb075
--- /dev/null
+++ b/plat/st/stm32mp1/stm32mp1_private.c
@@ -0,0 +1,788 @@
+/*
+ * Copyright (c) 2015-2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <drivers/clk.h>
+#include <drivers/st/stm32_gpio.h>
+#include <drivers/st/stm32_iwdg.h>
+#include <lib/mmio.h>
+#include <lib/xlat_tables/xlat_tables_v2.h>
+#include <libfdt.h>
+
+#include <plat/common/platform.h>
+#include <platform_def.h>
+
+/* Internal layout of the 32bit OTP word board_id */
+#define BOARD_ID_BOARD_NB_MASK GENMASK(31, 16)
+#define BOARD_ID_BOARD_NB_SHIFT 16
+#define BOARD_ID_VARCPN_MASK GENMASK(15, 12)
+#define BOARD_ID_VARCPN_SHIFT 12
+#define BOARD_ID_REVISION_MASK GENMASK(11, 8)
+#define BOARD_ID_REVISION_SHIFT 8
+#define BOARD_ID_VARFG_MASK GENMASK(7, 4)
+#define BOARD_ID_VARFG_SHIFT 4
+#define BOARD_ID_BOM_MASK GENMASK(3, 0)
+
+#define BOARD_ID2NB(_id) (((_id) & BOARD_ID_BOARD_NB_MASK) >> \
+ BOARD_ID_BOARD_NB_SHIFT)
+#define BOARD_ID2VARCPN(_id) (((_id) & BOARD_ID_VARCPN_MASK) >> \
+ BOARD_ID_VARCPN_SHIFT)
+#define BOARD_ID2REV(_id) (((_id) & BOARD_ID_REVISION_MASK) >> \
+ BOARD_ID_REVISION_SHIFT)
+#define BOARD_ID2VARFG(_id) (((_id) & BOARD_ID_VARFG_MASK) >> \
+ BOARD_ID_VARFG_SHIFT)
+#define BOARD_ID2BOM(_id) ((_id) & BOARD_ID_BOM_MASK)
+
+#if STM32MP13
+#define TAMP_BOOT_MODE_BACKUP_REG_ID U(30)
+#endif
+#if STM32MP15
+#define TAMP_BOOT_MODE_BACKUP_REG_ID U(20)
+#endif
+#define TAMP_BOOT_MODE_ITF_MASK GENMASK(15, 8)
+#define TAMP_BOOT_MODE_ITF_SHIFT 8
+#define TAMP_BOOT_MODE_AUTH_MASK GENMASK(23, 16)
+#define TAMP_BOOT_MODE_AUTH_SHIFT 16
+
+/*
+ * Backup register to store fwu update information.
+ * It should be writeable only by secure world, but also readable by non secure
+ * (so it should be in Zone 2).
+ */
+#define TAMP_BOOT_FWU_INFO_REG_ID U(10)
+#define TAMP_BOOT_FWU_INFO_IDX_MSK GENMASK(3, 0)
+#define TAMP_BOOT_FWU_INFO_IDX_OFF U(0)
+#define TAMP_BOOT_FWU_INFO_CNT_MSK GENMASK(7, 4)
+#define TAMP_BOOT_FWU_INFO_CNT_OFF U(4)
+
+#if defined(IMAGE_BL2)
+#define MAP_SEC_SYSRAM MAP_REGION_FLAT(STM32MP_SYSRAM_BASE, \
+ STM32MP_SYSRAM_SIZE, \
+ MT_MEMORY | \
+ MT_RW | \
+ MT_SECURE | \
+ MT_EXECUTE_NEVER)
+#elif defined(IMAGE_BL32)
+#define MAP_SEC_SYSRAM MAP_REGION_FLAT(STM32MP_SEC_SYSRAM_BASE, \
+ STM32MP_SEC_SYSRAM_SIZE, \
+ MT_MEMORY | \
+ MT_RW | \
+ MT_SECURE | \
+ MT_EXECUTE_NEVER)
+
+/* Non-secure SYSRAM is used a uncached memory for SCMI message transfer */
+#define MAP_NS_SYSRAM MAP_REGION_FLAT(STM32MP_NS_SYSRAM_BASE, \
+ STM32MP_NS_SYSRAM_SIZE, \
+ MT_DEVICE | \
+ MT_RW | \
+ MT_NS | \
+ MT_EXECUTE_NEVER)
+#endif
+
+#if STM32MP13
+#define MAP_SRAM_ALL MAP_REGION_FLAT(SRAMS_BASE, \
+ SRAMS_SIZE_2MB_ALIGNED, \
+ MT_MEMORY | \
+ MT_RW | \
+ MT_SECURE | \
+ MT_EXECUTE_NEVER)
+#endif
+
+#define MAP_DEVICE1 MAP_REGION_FLAT(STM32MP1_DEVICE1_BASE, \
+ STM32MP1_DEVICE1_SIZE, \
+ MT_DEVICE | \
+ MT_RW | \
+ MT_SECURE | \
+ MT_EXECUTE_NEVER)
+
+#define MAP_DEVICE2 MAP_REGION_FLAT(STM32MP1_DEVICE2_BASE, \
+ STM32MP1_DEVICE2_SIZE, \
+ MT_DEVICE | \
+ MT_RW | \
+ MT_SECURE | \
+ MT_EXECUTE_NEVER)
+
+#if defined(IMAGE_BL2)
+static const mmap_region_t stm32mp1_mmap[] = {
+ MAP_SEC_SYSRAM,
+#if STM32MP13
+ MAP_SRAM_ALL,
+#endif
+ MAP_DEVICE1,
+#if STM32MP_RAW_NAND
+ MAP_DEVICE2,
+#endif
+ {0}
+};
+#endif
+#if defined(IMAGE_BL32)
+static const mmap_region_t stm32mp1_mmap[] = {
+ MAP_SEC_SYSRAM,
+ MAP_NS_SYSRAM,
+ MAP_DEVICE1,
+ MAP_DEVICE2,
+ {0}
+};
+#endif
+
+void configure_mmu(void)
+{
+ mmap_add(stm32mp1_mmap);
+ init_xlat_tables();
+
+ enable_mmu_svc_mon(0);
+}
+
+uintptr_t stm32_get_gpio_bank_base(unsigned int bank)
+{
+#if STM32MP13
+ assert(GPIO_BANK_A == 0 && bank <= GPIO_BANK_I);
+#endif
+#if STM32MP15
+ if (bank == GPIO_BANK_Z) {
+ return GPIOZ_BASE;
+ }
+
+ assert(GPIO_BANK_A == 0 && bank <= GPIO_BANK_K);
+#endif
+
+ return GPIOA_BASE + (bank * GPIO_BANK_OFFSET);
+}
+
+uint32_t stm32_get_gpio_bank_offset(unsigned int bank)
+{
+#if STM32MP13
+ assert(GPIO_BANK_A == 0 && bank <= GPIO_BANK_I);
+#endif
+#if STM32MP15
+ if (bank == GPIO_BANK_Z) {
+ return 0;
+ }
+
+ assert(GPIO_BANK_A == 0 && bank <= GPIO_BANK_K);
+#endif
+
+ return bank * GPIO_BANK_OFFSET;
+}
+
+bool stm32_gpio_is_secure_at_reset(unsigned int bank)
+{
+#if STM32MP13
+ return true;
+#endif
+#if STM32MP15
+ if (bank == GPIO_BANK_Z) {
+ return true;
+ }
+
+ return false;
+#endif
+}
+
+unsigned long stm32_get_gpio_bank_clock(unsigned int bank)
+{
+#if STM32MP13
+ assert(GPIO_BANK_A == 0 && bank <= GPIO_BANK_I);
+#endif
+#if STM32MP15
+ if (bank == GPIO_BANK_Z) {
+ return GPIOZ;
+ }
+
+ assert(GPIO_BANK_A == 0 && bank <= GPIO_BANK_K);
+#endif
+
+ return GPIOA + (bank - GPIO_BANK_A);
+}
+
+int stm32_get_gpio_bank_pinctrl_node(void *fdt, unsigned int bank)
+{
+ const char *node_compatible = NULL;
+
+ switch (bank) {
+ case GPIO_BANK_A:
+ case GPIO_BANK_B:
+ case GPIO_BANK_C:
+ case GPIO_BANK_D:
+ case GPIO_BANK_E:
+ case GPIO_BANK_F:
+ case GPIO_BANK_G:
+ case GPIO_BANK_H:
+ case GPIO_BANK_I:
+#if STM32MP13
+ node_compatible = "st,stm32mp135-pinctrl";
+ break;
+#endif
+#if STM32MP15
+ case GPIO_BANK_J:
+ case GPIO_BANK_K:
+ node_compatible = "st,stm32mp157-pinctrl";
+ break;
+ case GPIO_BANK_Z:
+ node_compatible = "st,stm32mp157-z-pinctrl";
+ break;
+#endif
+ default:
+ panic();
+ }
+
+ return fdt_node_offset_by_compatible(fdt, -1, node_compatible);
+}
+
+#if STM32MP_UART_PROGRAMMER || !defined(IMAGE_BL2)
+/*
+ * UART Management
+ */
+static const uintptr_t stm32mp1_uart_addresses[8] = {
+ USART1_BASE,
+ USART2_BASE,
+ USART3_BASE,
+ UART4_BASE,
+ UART5_BASE,
+ USART6_BASE,
+ UART7_BASE,
+ UART8_BASE,
+};
+
+uintptr_t get_uart_address(uint32_t instance_nb)
+{
+ if ((instance_nb == 0U) ||
+ (instance_nb > ARRAY_SIZE(stm32mp1_uart_addresses))) {
+ return 0U;
+ }
+
+ return stm32mp1_uart_addresses[instance_nb - 1U];
+}
+#endif
+
+#if STM32MP_USB_PROGRAMMER
+struct gpio_bank_pin_list {
+ uint32_t bank;
+ uint32_t pin;
+};
+
+static const struct gpio_bank_pin_list gpio_list[] = {
+ { /* USART2_RX: GPIOA3 */
+ .bank = 0U,
+ .pin = 3U,
+ },
+ { /* USART3_RX: GPIOB12 */
+ .bank = 1U,
+ .pin = 12U,
+ },
+ { /* UART4_RX: GPIOB2 */
+ .bank = 1U,
+ .pin = 2U,
+ },
+ { /* UART5_RX: GPIOB4 */
+ .bank = 1U,
+ .pin = 5U,
+ },
+ { /* USART6_RX: GPIOC7 */
+ .bank = 2U,
+ .pin = 7U,
+ },
+ { /* UART7_RX: GPIOF6 */
+ .bank = 5U,
+ .pin = 6U,
+ },
+ { /* UART8_RX: GPIOE0 */
+ .bank = 4U,
+ .pin = 0U,
+ },
+};
+
+void stm32mp1_deconfigure_uart_pins(void)
+{
+ size_t i;
+
+ for (i = 0U; i < ARRAY_SIZE(gpio_list); i++) {
+ set_gpio_reset_cfg(gpio_list[i].bank, gpio_list[i].pin);
+ }
+}
+#endif
+
+uint32_t stm32mp_get_chip_version(void)
+{
+#if STM32MP13
+ return stm32mp1_syscfg_get_chip_version();
+#endif
+#if STM32MP15
+ uint32_t version = 0U;
+
+ if (stm32mp1_dbgmcu_get_chip_version(&version) < 0) {
+ INFO("Cannot get CPU version, debug disabled\n");
+ return 0U;
+ }
+
+ return version;
+#endif
+}
+
+uint32_t stm32mp_get_chip_dev_id(void)
+{
+#if STM32MP13
+ return stm32mp1_syscfg_get_chip_dev_id();
+#endif
+#if STM32MP15
+ uint32_t dev_id;
+
+ if (stm32mp1_dbgmcu_get_chip_dev_id(&dev_id) < 0) {
+ INFO("Use default chip ID, debug disabled\n");
+ dev_id = STM32MP1_CHIP_ID;
+ }
+
+ return dev_id;
+#endif
+}
+
+static uint32_t get_part_number(void)
+{
+ static uint32_t part_number;
+
+ if (part_number != 0U) {
+ return part_number;
+ }
+
+ if (stm32_get_otp_value(PART_NUMBER_OTP, &part_number) != 0) {
+ panic();
+ }
+
+ part_number = (part_number & PART_NUMBER_OTP_PART_MASK) >>
+ PART_NUMBER_OTP_PART_SHIFT;
+
+ part_number |= stm32mp_get_chip_dev_id() << 16;
+
+ return part_number;
+}
+
+#if STM32MP15
+static uint32_t get_cpu_package(void)
+{
+ uint32_t package;
+
+ if (stm32_get_otp_value(PACKAGE_OTP, &package) != 0) {
+ panic();
+ }
+
+ package = (package & PACKAGE_OTP_PKG_MASK) >>
+ PACKAGE_OTP_PKG_SHIFT;
+
+ return package;
+}
+#endif
+
+void stm32mp_get_soc_name(char name[STM32_SOC_NAME_SIZE])
+{
+ char *cpu_s, *cpu_r, *pkg;
+
+ /* MPUs Part Numbers */
+ switch (get_part_number()) {
+#if STM32MP13
+ case STM32MP135F_PART_NB:
+ cpu_s = "135F";
+ break;
+ case STM32MP135D_PART_NB:
+ cpu_s = "135D";
+ break;
+ case STM32MP135C_PART_NB:
+ cpu_s = "135C";
+ break;
+ case STM32MP135A_PART_NB:
+ cpu_s = "135A";
+ break;
+ case STM32MP133F_PART_NB:
+ cpu_s = "133F";
+ break;
+ case STM32MP133D_PART_NB:
+ cpu_s = "133D";
+ break;
+ case STM32MP133C_PART_NB:
+ cpu_s = "133C";
+ break;
+ case STM32MP133A_PART_NB:
+ cpu_s = "133A";
+ break;
+ case STM32MP131F_PART_NB:
+ cpu_s = "131F";
+ break;
+ case STM32MP131D_PART_NB:
+ cpu_s = "131D";
+ break;
+ case STM32MP131C_PART_NB:
+ cpu_s = "131C";
+ break;
+ case STM32MP131A_PART_NB:
+ cpu_s = "131A";
+ break;
+#endif
+#if STM32MP15
+ case STM32MP157C_PART_NB:
+ cpu_s = "157C";
+ break;
+ case STM32MP157A_PART_NB:
+ cpu_s = "157A";
+ break;
+ case STM32MP153C_PART_NB:
+ cpu_s = "153C";
+ break;
+ case STM32MP153A_PART_NB:
+ cpu_s = "153A";
+ break;
+ case STM32MP151C_PART_NB:
+ cpu_s = "151C";
+ break;
+ case STM32MP151A_PART_NB:
+ cpu_s = "151A";
+ break;
+ case STM32MP157F_PART_NB:
+ cpu_s = "157F";
+ break;
+ case STM32MP157D_PART_NB:
+ cpu_s = "157D";
+ break;
+ case STM32MP153F_PART_NB:
+ cpu_s = "153F";
+ break;
+ case STM32MP153D_PART_NB:
+ cpu_s = "153D";
+ break;
+ case STM32MP151F_PART_NB:
+ cpu_s = "151F";
+ break;
+ case STM32MP151D_PART_NB:
+ cpu_s = "151D";
+ break;
+#endif
+ default:
+ cpu_s = "????";
+ break;
+ }
+
+ /* Package */
+#if STM32MP13
+ /* On STM32MP13, package is not present in OTP */
+ pkg = "";
+#endif
+#if STM32MP15
+ switch (get_cpu_package()) {
+ case PKG_AA_LFBGA448:
+ pkg = "AA";
+ break;
+ case PKG_AB_LFBGA354:
+ pkg = "AB";
+ break;
+ case PKG_AC_TFBGA361:
+ pkg = "AC";
+ break;
+ case PKG_AD_TFBGA257:
+ pkg = "AD";
+ break;
+ default:
+ pkg = "??";
+ break;
+ }
+#endif
+
+ /* REVISION */
+ switch (stm32mp_get_chip_version()) {
+ case STM32MP1_REV_B:
+ cpu_r = "B";
+ break;
+#if STM32MP13
+ case STM32MP1_REV_Y:
+ cpu_r = "Y";
+ break;
+#endif
+ case STM32MP1_REV_Z:
+ cpu_r = "Z";
+ break;
+ default:
+ cpu_r = "?";
+ break;
+ }
+
+ snprintf(name, STM32_SOC_NAME_SIZE,
+ "STM32MP%s%s Rev.%s", cpu_s, pkg, cpu_r);
+}
+
+void stm32mp_print_cpuinfo(void)
+{
+ char name[STM32_SOC_NAME_SIZE];
+
+ stm32mp_get_soc_name(name);
+ NOTICE("CPU: %s\n", name);
+}
+
+void stm32mp_print_boardinfo(void)
+{
+ uint32_t board_id = 0;
+
+ if (stm32_get_otp_value(BOARD_ID_OTP, &board_id) != 0) {
+ return;
+ }
+
+ if (board_id != 0U) {
+ char rev[2];
+
+ rev[0] = BOARD_ID2REV(board_id) - 1 + 'A';
+ rev[1] = '\0';
+ NOTICE("Board: MB%04x Var%u.%u Rev.%s-%02u\n",
+ BOARD_ID2NB(board_id),
+ BOARD_ID2VARCPN(board_id),
+ BOARD_ID2VARFG(board_id),
+ rev,
+ BOARD_ID2BOM(board_id));
+ }
+}
+
+/* Return true when SoC provides a single Cortex-A7 core, and false otherwise */
+bool stm32mp_is_single_core(void)
+{
+#if STM32MP13
+ return true;
+#endif
+#if STM32MP15
+ bool single_core = false;
+
+ switch (get_part_number()) {
+ case STM32MP151A_PART_NB:
+ case STM32MP151C_PART_NB:
+ case STM32MP151D_PART_NB:
+ case STM32MP151F_PART_NB:
+ single_core = true;
+ break;
+ default:
+ break;
+ }
+
+ return single_core;
+#endif
+}
+
+/* Return true when device is in closed state */
+bool stm32mp_is_closed_device(void)
+{
+ uint32_t value;
+
+ if (stm32_get_otp_value(CFG0_OTP, &value) != 0) {
+ return true;
+ }
+
+#if STM32MP13
+ value = (value & CFG0_OTP_MODE_MASK) >> CFG0_OTP_MODE_SHIFT;
+
+ switch (value) {
+ case CFG0_OPEN_DEVICE:
+ return false;
+ case CFG0_CLOSED_DEVICE:
+ case CFG0_CLOSED_DEVICE_NO_BOUNDARY_SCAN:
+ case CFG0_CLOSED_DEVICE_NO_JTAG:
+ return true;
+ default:
+ panic();
+ }
+#endif
+#if STM32MP15
+ return (value & CFG0_CLOSED_DEVICE) == CFG0_CLOSED_DEVICE;
+#endif
+}
+
+/* Return true when device supports secure boot */
+bool stm32mp_is_auth_supported(void)
+{
+ bool supported = false;
+
+ switch (get_part_number()) {
+#if STM32MP13
+ case STM32MP131C_PART_NB:
+ case STM32MP131F_PART_NB:
+ case STM32MP133C_PART_NB:
+ case STM32MP133F_PART_NB:
+ case STM32MP135C_PART_NB:
+ case STM32MP135F_PART_NB:
+#endif
+#if STM32MP15
+ case STM32MP151C_PART_NB:
+ case STM32MP151F_PART_NB:
+ case STM32MP153C_PART_NB:
+ case STM32MP153F_PART_NB:
+ case STM32MP157C_PART_NB:
+ case STM32MP157F_PART_NB:
+#endif
+ supported = true;
+ break;
+ default:
+ break;
+ }
+
+ return supported;
+}
+
+uint32_t stm32_iwdg_get_instance(uintptr_t base)
+{
+ switch (base) {
+ case IWDG1_BASE:
+ return IWDG1_INST;
+ case IWDG2_BASE:
+ return IWDG2_INST;
+ default:
+ panic();
+ }
+}
+
+uint32_t stm32_iwdg_get_otp_config(uint32_t iwdg_inst)
+{
+ uint32_t iwdg_cfg = 0U;
+ uint32_t otp_value;
+
+ if (stm32_get_otp_value(HW2_OTP, &otp_value) != 0) {
+ panic();
+ }
+
+ if ((otp_value & BIT(iwdg_inst + HW2_OTP_IWDG_HW_POS)) != 0U) {
+ iwdg_cfg |= IWDG_HW_ENABLED;
+ }
+
+ if ((otp_value & BIT(iwdg_inst + HW2_OTP_IWDG_FZ_STOP_POS)) != 0U) {
+ iwdg_cfg |= IWDG_DISABLE_ON_STOP;
+ }
+
+ if ((otp_value & BIT(iwdg_inst + HW2_OTP_IWDG_FZ_STANDBY_POS)) != 0U) {
+ iwdg_cfg |= IWDG_DISABLE_ON_STANDBY;
+ }
+
+ return iwdg_cfg;
+}
+
+#if defined(IMAGE_BL2)
+uint32_t stm32_iwdg_shadow_update(uint32_t iwdg_inst, uint32_t flags)
+{
+ uint32_t otp_value;
+ uint32_t otp;
+ uint32_t result;
+
+ if (stm32_get_otp_index(HW2_OTP, &otp, NULL) != 0) {
+ panic();
+ }
+
+ if (stm32_get_otp_value(HW2_OTP, &otp_value) != 0) {
+ panic();
+ }
+
+ if ((flags & IWDG_DISABLE_ON_STOP) != 0) {
+ otp_value |= BIT(iwdg_inst + HW2_OTP_IWDG_FZ_STOP_POS);
+ }
+
+ if ((flags & IWDG_DISABLE_ON_STANDBY) != 0) {
+ otp_value |= BIT(iwdg_inst + HW2_OTP_IWDG_FZ_STANDBY_POS);
+ }
+
+ result = bsec_write_otp(otp_value, otp);
+ if (result != BSEC_OK) {
+ return result;
+ }
+
+ /* Sticky lock OTP_IWDG (read and write) */
+ if ((bsec_set_sr_lock(otp) != BSEC_OK) ||
+ (bsec_set_sw_lock(otp) != BSEC_OK)) {
+ return BSEC_LOCK_FAIL;
+ }
+
+ return BSEC_OK;
+}
+#endif
+
+void stm32_save_boot_interface(uint32_t interface, uint32_t instance)
+{
+ uintptr_t bkpr_itf_idx = tamp_bkpr(TAMP_BOOT_MODE_BACKUP_REG_ID);
+
+ clk_enable(RTCAPB);
+
+ mmio_clrsetbits_32(bkpr_itf_idx,
+ TAMP_BOOT_MODE_ITF_MASK,
+ ((interface << 4) | (instance & 0xFU)) <<
+ TAMP_BOOT_MODE_ITF_SHIFT);
+
+ clk_disable(RTCAPB);
+}
+
+void stm32_get_boot_interface(uint32_t *interface, uint32_t *instance)
+{
+ static uint32_t itf;
+
+ if (itf == 0U) {
+ uintptr_t bkpr = tamp_bkpr(TAMP_BOOT_MODE_BACKUP_REG_ID);
+
+ clk_enable(RTCAPB);
+
+ itf = (mmio_read_32(bkpr) & TAMP_BOOT_MODE_ITF_MASK) >>
+ TAMP_BOOT_MODE_ITF_SHIFT;
+
+ clk_disable(RTCAPB);
+ }
+
+ *interface = itf >> 4;
+ *instance = itf & 0xFU;
+}
+
+void stm32_save_boot_auth(uint32_t auth_status, uint32_t boot_partition)
+{
+ uint32_t boot_status = tamp_bkpr(TAMP_BOOT_MODE_BACKUP_REG_ID);
+
+ clk_enable(RTCAPB);
+
+ mmio_clrsetbits_32(boot_status,
+ TAMP_BOOT_MODE_AUTH_MASK,
+ ((auth_status << 4) | (boot_partition & 0xFU)) <<
+ TAMP_BOOT_MODE_AUTH_SHIFT);
+
+ clk_disable(RTCAPB);
+}
+
+#if PSA_FWU_SUPPORT
+void stm32mp1_fwu_set_boot_idx(void)
+{
+ clk_enable(RTCAPB);
+ mmio_clrsetbits_32(tamp_bkpr(TAMP_BOOT_FWU_INFO_REG_ID),
+ TAMP_BOOT_FWU_INFO_IDX_MSK,
+ (plat_fwu_get_boot_idx() << TAMP_BOOT_FWU_INFO_IDX_OFF) &
+ TAMP_BOOT_FWU_INFO_IDX_MSK);
+ clk_disable(RTCAPB);
+}
+
+uint32_t stm32_get_and_dec_fwu_trial_boot_cnt(void)
+{
+ uintptr_t bkpr_fwu_cnt = tamp_bkpr(TAMP_BOOT_FWU_INFO_REG_ID);
+ uint32_t try_cnt;
+
+ clk_enable(RTCAPB);
+ try_cnt = (mmio_read_32(bkpr_fwu_cnt) & TAMP_BOOT_FWU_INFO_CNT_MSK) >>
+ TAMP_BOOT_FWU_INFO_CNT_OFF;
+
+ assert(try_cnt <= FWU_MAX_TRIAL_REBOOT);
+
+ if (try_cnt != 0U) {
+ mmio_clrsetbits_32(bkpr_fwu_cnt, TAMP_BOOT_FWU_INFO_CNT_MSK,
+ (try_cnt - 1U) << TAMP_BOOT_FWU_INFO_CNT_OFF);
+ }
+ clk_disable(RTCAPB);
+
+ return try_cnt;
+}
+
+void stm32_set_max_fwu_trial_boot_cnt(void)
+{
+ uintptr_t bkpr_fwu_cnt = tamp_bkpr(TAMP_BOOT_FWU_INFO_REG_ID);
+
+ clk_enable(RTCAPB);
+ mmio_clrsetbits_32(bkpr_fwu_cnt, TAMP_BOOT_FWU_INFO_CNT_MSK,
+ (FWU_MAX_TRIAL_REBOOT << TAMP_BOOT_FWU_INFO_CNT_OFF) &
+ TAMP_BOOT_FWU_INFO_CNT_MSK);
+ clk_disable(RTCAPB);
+}
+#endif /* PSA_FWU_SUPPORT */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 12:38:03 +0000