kopia lustrzana https://github.com/espressif/esp-idf
147 wiersze
8.2 KiB
C
147 wiersze
8.2 KiB
C
/*
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* SPDX-FileCopyrightText: 2017-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "sdkconfig.h"
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#include "soc/soc.h"
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#include "soc/rtc.h"
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#include "soc/chip_revision.h"
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#include "hal/efuse_hal.h"
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#if !CONFIG_IDF_TARGET_ESP32C6 && !CONFIG_IDF_TARGET_ESP32H2 && !CONFIG_IDF_TARGET_ESP32P4 && !CONFIG_IDF_TARGET_ESP32C5 &&! CONFIG_IDF_TARGET_ESP32C61 // TODO: IDF-5645
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#include "soc/rtc_cntl_reg.h"
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#else
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#include "soc/lp_wdt_reg.h"
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#include "soc/lp_timer_reg.h"
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#include "soc/lp_analog_peri_reg.h"
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#include "soc/pmu_reg.h"
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#endif
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#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32C5
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#include "hal/clk_tree_ll.h"
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#endif
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#include "esp_rom_sys.h"
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#include "esp_rom_uart.h"
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__attribute__((weak)) void bootloader_clock_configure(void)
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{
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// ROM bootloader may have put a lot of text into UART0 FIFO.
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// Wait for it to be printed.
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// This is not needed on power on reset, when ROM bootloader is running at
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// 40 MHz. But in case of TG WDT reset, CPU may still be running at >80 MHZ,
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// and will be done with the bootloader much earlier than UART FIFO is empty.
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esp_rom_output_tx_wait_idle(0);
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/* Set CPU to a higher certain frequency. Keep other clocks unmodified. */
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int cpu_freq_mhz = CPU_CLK_FREQ_MHZ_BTLD;
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#if CONFIG_IDF_TARGET_ESP32
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/* On ESP32 rev 0, switching to 80/160 MHz if clock was previously set to
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* 240 MHz may cause the chip to lock up (see section 3.5 of the errata
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* document). For rev. 0, switch to 240 instead if it has been enabled
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* previously.
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*/
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if (!ESP_CHIP_REV_ABOVE(efuse_hal_chip_revision(), 100) &&
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clk_ll_cpu_get_freq_mhz_from_pll() == CLK_LL_PLL_240M_FREQ_MHZ) {
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cpu_freq_mhz = 240;
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}
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#endif
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if (esp_rom_get_reset_reason(0) != RESET_REASON_CPU0_SW || rtc_clk_apb_freq_get() < APB_CLK_FREQ) {
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rtc_clk_config_t clk_cfg = RTC_CLK_CONFIG_DEFAULT();
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clk_cfg.cpu_freq_mhz = cpu_freq_mhz;
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#if CONFIG_IDF_TARGET_ESP32C5
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// TODO: [ESP32C5] IDF-9009 Check whether SOC_RTC_SLOW_CLK_SRC_RC_SLOW can be used on C5 MP
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// RC150K can't do calibrate on ESP32C5MPW so not use it
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clk_cfg.slow_clk_src = SOC_RTC_SLOW_CLK_SRC_RC32K;
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#else
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// Use RTC_SLOW clock source sel register field's default value, RC_SLOW, for 2nd stage bootloader
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// RTC_SLOW clock source will be switched according to Kconfig selection at application startup
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clk_cfg.slow_clk_src = rtc_clk_slow_src_get();
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if (clk_cfg.slow_clk_src == SOC_RTC_SLOW_CLK_SRC_INVALID) {
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clk_cfg.slow_clk_src = SOC_RTC_SLOW_CLK_SRC_RC_SLOW;
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}
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#endif
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//TODO: [ESP32C61] IDF-9274, basic rtc support
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#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32C5 || CONFIG_IDF_TARGET_ESP32C61
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// TODO: IDF-5781 Some of esp32c6 SOC_RTC_FAST_CLK_SRC_XTAL_D2 rtc_fast clock has timing issue
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// Force to use SOC_RTC_FAST_CLK_SRC_RC_FAST since 2nd stage bootloader
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clk_cfg.fast_clk_src = SOC_RTC_FAST_CLK_SRC_RC_FAST;
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#else
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// Use RTC_FAST clock source sel register field's default value, XTAL_DIV, for 2nd stage bootloader
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// RTC_FAST clock source will be switched to RC_FAST at application startup
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clk_cfg.fast_clk_src = rtc_clk_fast_src_get();
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if (clk_cfg.fast_clk_src == SOC_RTC_FAST_CLK_SRC_INVALID) {
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clk_cfg.fast_clk_src = SOC_RTC_FAST_CLK_SRC_XTAL_DIV;
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}
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#endif
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rtc_clk_init(clk_cfg);
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}
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/* As a slight optimization, if 32k XTAL was enabled in sdkconfig, we enable
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* it here. Usually it needs some time to start up, so we amortize at least
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* part of the start up time by enabling 32k XTAL early.
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* App startup code will wait until the oscillator has started up.
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*/
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#if CONFIG_ESP_SYSTEM_RTC_EXT_XTAL
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if (!rtc_clk_32k_enabled()) {
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rtc_clk_32k_bootstrap(CONFIG_ESP_SYSTEM_RTC_EXT_XTAL_BOOTSTRAP_CYCLES);
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}
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#endif // CONFIG_ESP_SYSTEM_RTC_EXT_XTAL
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// TODO: IDF-8938 Need refactor! Does not belong to clock configuration.
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#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32C5 || CONFIG_IDF_TARGET_ESP32C61
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#if CONFIG_IDF_TARGET_ESP32C5 || CONFIG_IDF_TARGET_ESP32C61
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#define LP_ANALOG_PERI_LP_ANA_LP_INT_ENA_REG LP_ANA_LP_INT_ENA_REG
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#define LP_ANALOG_PERI_LP_ANA_BOD_MODE0_LP_INT_ENA LP_ANA_BOD_MODE0_LP_INT_ENA
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#define LP_ANALOG_PERI_LP_ANA_LP_INT_CLR_REG LP_ANA_LP_INT_CLR_REG
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#define LP_ANALOG_PERI_LP_ANA_BOD_MODE0_LP_INT_CLR LP_ANA_BOD_MODE0_LP_INT_CLR
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#endif
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// CLR ENA
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CLEAR_PERI_REG_MASK(LP_WDT_INT_ENA_REG, LP_WDT_SUPER_WDT_INT_ENA); /* SWD */
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CLEAR_PERI_REG_MASK(LP_TIMER_LP_INT_ENA_REG, LP_TIMER_MAIN_TIMER_LP_INT_ENA); /* MAIN_TIMER */
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CLEAR_PERI_REG_MASK(LP_ANALOG_PERI_LP_ANA_LP_INT_ENA_REG, LP_ANALOG_PERI_LP_ANA_BOD_MODE0_LP_INT_ENA); /* BROWN_OUT */
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CLEAR_PERI_REG_MASK(LP_WDT_INT_ENA_REG, LP_WDT_LP_WDT_INT_ENA); /* WDT */
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CLEAR_PERI_REG_MASK(PMU_HP_INT_ENA_REG, PMU_SOC_WAKEUP_INT_ENA); /* SLP_REJECT */
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CLEAR_PERI_REG_MASK(PMU_HP_INT_ENA_REG, PMU_SOC_SLEEP_REJECT_INT_ENA); /* SLP_WAKEUP */
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// SET CLR
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SET_PERI_REG_MASK(LP_WDT_INT_CLR_REG, LP_WDT_SUPER_WDT_INT_CLR); /* SWD */
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SET_PERI_REG_MASK(LP_TIMER_LP_INT_CLR_REG, LP_TIMER_MAIN_TIMER_LP_INT_CLR); /* MAIN_TIMER */
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SET_PERI_REG_MASK(LP_ANALOG_PERI_LP_ANA_LP_INT_CLR_REG, LP_ANALOG_PERI_LP_ANA_BOD_MODE0_LP_INT_CLR); /* BROWN_OUT */
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SET_PERI_REG_MASK(LP_WDT_INT_CLR_REG, LP_WDT_LP_WDT_INT_CLR); /* WDT */
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#elif CONFIG_IDF_TARGET_ESP32H2
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// CLR ENA
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CLEAR_PERI_REG_MASK(LP_WDT_INT_ENA_REG, LP_WDT_SUPER_WDT_INT_ENA); /* SWD */
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CLEAR_PERI_REG_MASK(LP_ANALOG_PERI_LP_ANA_LP_INT_ENA_REG, LP_ANALOG_PERI_LP_ANA_BOD_MODE0_LP_INT_ENA); /* BROWN_OUT */
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CLEAR_PERI_REG_MASK(LP_WDT_INT_ENA_REG, LP_WDT_LP_WDT_INT_ENA); /* WDT */
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CLEAR_PERI_REG_MASK(PMU_HP_INT_ENA_REG, PMU_SOC_WAKEUP_INT_ENA); /* SLP_REJECT */
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CLEAR_PERI_REG_MASK(PMU_HP_INT_ENA_REG, PMU_SOC_SLEEP_REJECT_INT_ENA); /* SLP_WAKEUP */
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// SET CLR
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SET_PERI_REG_MASK(LP_WDT_INT_CLR_REG, LP_WDT_SUPER_WDT_INT_CLR); /* SWD */
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SET_PERI_REG_MASK(LP_ANALOG_PERI_LP_ANA_LP_INT_CLR_REG, LP_ANALOG_PERI_LP_ANA_BOD_MODE0_LP_INT_CLR); /* BROWN_OUT */
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SET_PERI_REG_MASK(LP_WDT_INT_CLR_REG, LP_WDT_LP_WDT_INT_CLR); /* WDT */
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SET_PERI_REG_MASK(PMU_HP_INT_CLR_REG, PMU_SOC_WAKEUP_INT_CLR); /* SLP_REJECT */
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SET_PERI_REG_MASK(PMU_HP_INT_CLR_REG, PMU_SOC_SLEEP_REJECT_INT_CLR); /* SLP_WAKEUP */
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#elif CONFIG_IDF_TARGET_ESP32P4
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// CLR ENA
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CLEAR_PERI_REG_MASK(LP_WDT_INT_ENA_REG, LP_WDT_SUPER_WDT_INT_ENA); /* SWD */
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CLEAR_PERI_REG_MASK(LP_TIMER_LP_INT_ENA_REG, LP_TIMER_MAIN_TIMER_LP_INT_ENA); /* MAIN_TIMER */
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CLEAR_PERI_REG_MASK(LP_ANALOG_PERI_LP_INT_ENA_REG, LP_ANALOG_PERI_BOD_MODE0_LP_INT_ENA); /* BROWN_OUT */
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CLEAR_PERI_REG_MASK(LP_WDT_INT_ENA_REG, LP_WDT_LP_WDT_INT_ENA); /* WDT */
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CLEAR_PERI_REG_MASK(PMU_HP_INT_ENA_REG, PMU_SOC_WAKEUP_INT_ENA); /* SLP_REJECT */
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CLEAR_PERI_REG_MASK(PMU_HP_INT_ENA_REG, PMU_SOC_SLEEP_REJECT_INT_ENA); /* SLP_WAKEUP */
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// SET CLR
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SET_PERI_REG_MASK(LP_WDT_INT_CLR_REG, LP_WDT_SUPER_WDT_INT_CLR); /* SWD */
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SET_PERI_REG_MASK(LP_TIMER_LP_INT_CLR_REG, LP_TIMER_MAIN_TIMER_LP_INT_CLR); /* MAIN_TIMER */
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SET_PERI_REG_MASK(LP_ANALOG_PERI_LP_INT_CLR_REG, LP_ANALOG_PERI_LP_INT_CLR_REG); /* BROWN_OUT */
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SET_PERI_REG_MASK(LP_WDT_INT_CLR_REG, LP_WDT_LP_WDT_INT_CLR); /* WDT */
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#else
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REG_WRITE(RTC_CNTL_INT_ENA_REG, 0);
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REG_WRITE(RTC_CNTL_INT_CLR_REG, UINT32_MAX);
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#endif
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}
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