--- /dev/null
+/***************************************************************************
+ * ESP32-S3 target API for OpenOCD *
+ * Copyright (C) 2020 Espressif Systems Ltd. *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
+ ***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <helper/time_support.h>
+#include <target/target.h>
+#include <target/target_type.h>
+#include <target/smp.h>
+#include "assert.h"
+#include "esp32s3.h"
+#include "esp_xtensa_smp.h"
+
+/*
+This is a JTAG driver for the ESP32_S3, the are two Tensilica cores inside
+the ESP32_S3 chip. For more information please have a look into ESP32_S3 target
+implementation.
+*/
+
+/* ESP32_S3 memory map */
+#define ESP32_S3_IRAM_LOW 0x40370000
+#define ESP32_S3_IRAM_HIGH 0x403E0000
+#define ESP32_S3_IROM_MASK_LOW 0x40000000
+#define ESP32_S3_IROM_MASK_HIGH 0x40060000
+#define ESP32_S3_DRAM_LOW 0x3FC88000
+#define ESP32_S3_DRAM_HIGH 0x3FD00000
+#define ESP32_S3_RTC_IRAM_LOW 0x600FE000
+#define ESP32_S3_RTC_IRAM_HIGH 0x60100000
+#define ESP32_S3_RTC_DRAM_LOW 0x600FE000
+#define ESP32_S3_RTC_DRAM_HIGH 0x60100000
+#define ESP32_S3_RTC_DATA_LOW 0x50000000
+#define ESP32_S3_RTC_DATA_HIGH 0x50002000
+#define ESP32_S3_EXTRAM_DATA_LOW 0x3D000000
+#define ESP32_S3_EXTRAM_DATA_HIGH 0x3E000000
+#define ESP32_S3_SYS_RAM_LOW 0x60000000UL
+#define ESP32_S3_SYS_RAM_HIGH (ESP32_S3_SYS_RAM_LOW + 0x10000000UL)
+#define ESP32_S3_RTC_SLOW_MEM_BASE ESP32_S3_RTC_DATA_LOW
+
+/* ESP32_S3 WDT */
+#define ESP32_S3_WDT_WKEY_VALUE 0x50D83AA1
+#define ESP32_S3_TIMG0_BASE 0x6001F000
+#define ESP32_S3_TIMG1_BASE 0x60020000
+#define ESP32_S3_TIMGWDT_CFG0_OFF 0x48
+#define ESP32_S3_TIMGWDT_PROTECT_OFF 0x64
+#define ESP32_S3_TIMG0WDT_CFG0 (ESP32_S3_TIMG0_BASE + ESP32_S3_TIMGWDT_CFG0_OFF)
+#define ESP32_S3_TIMG1WDT_CFG0 (ESP32_S3_TIMG1_BASE + ESP32_S3_TIMGWDT_CFG0_OFF)
+#define ESP32_S3_TIMG0WDT_PROTECT (ESP32_S3_TIMG0_BASE + ESP32_S3_TIMGWDT_PROTECT_OFF)
+#define ESP32_S3_TIMG1WDT_PROTECT (ESP32_S3_TIMG1_BASE + ESP32_S3_TIMGWDT_PROTECT_OFF)
+#define ESP32_S3_RTCCNTL_BASE 0x60008000
+#define ESP32_S3_RTCWDT_CFG_OFF 0x98
+#define ESP32_S3_RTCWDT_PROTECT_OFF 0xB0
+#define ESP32_S3_SWD_CONF_OFF 0xB0
+#define ESP32_S3_SWD_WPROTECT_OFF 0xB4
+#define ESP32_S3_RTCWDT_CFG (ESP32_S3_RTCCNTL_BASE + ESP32_S3_RTCWDT_CFG_OFF)
+#define ESP32_S3_RTCWDT_PROTECT (ESP32_S3_RTCCNTL_BASE + ESP32_S3_RTCWDT_PROTECT_OFF)
+#define ESP32_S3_SWD_CONF_REG (ESP32_S3_RTCCNTL_BASE + ESP32_S3_SWD_CONF_OFF)
+#define ESP32_S3_SWD_WPROTECT_REG (ESP32_S3_RTCCNTL_BASE + ESP32_S3_SWD_WPROTECT_OFF)
+#define ESP32_S3_SWD_AUTO_FEED_EN_M BIT(31)
+#define ESP32_S3_SWD_WKEY_VALUE 0x8F1D312AU
+
+#define ESP32_S3_TRACEMEM_BLOCK_SZ 0x4000
+
+/* ESP32_S3 dport regs */
+#define ESP32_S3_DR_REG_SYSTEM_BASE 0x600c0000
+#define ESP32_S3_SYSTEM_CORE_1_CONTROL_0_REG (ESP32_S3_DR_REG_SYSTEM_BASE + 0x014)
+#define ESP32_S3_SYSTEM_CONTROL_CORE_1_CLKGATE_EN BIT(1)
+
+/* ESP32_S3 RTC regs */
+#define ESP32_S3_RTC_CNTL_SW_CPU_STALL_REG (ESP32_S3_RTCCNTL_BASE + 0xBC)
+#define ESP32_S3_RTC_CNTL_SW_CPU_STALL_DEF 0x0
+
+/* this should map local reg IDs to GDB reg mapping as defined in xtensa-config.c 'rmap' in
+ *xtensa-overlay */
+static const unsigned int esp32s3_gdb_regs_mapping[ESP32_S3_NUM_REGS] = {
+ XT_REG_IDX_PC,
+ XT_REG_IDX_AR0, XT_REG_IDX_AR1, XT_REG_IDX_AR2, XT_REG_IDX_AR3,
+ XT_REG_IDX_AR4, XT_REG_IDX_AR5, XT_REG_IDX_AR6, XT_REG_IDX_AR7,
+ XT_REG_IDX_AR8, XT_REG_IDX_AR9, XT_REG_IDX_AR10, XT_REG_IDX_AR11,
+ XT_REG_IDX_AR12, XT_REG_IDX_AR13, XT_REG_IDX_AR14, XT_REG_IDX_AR15,
+ XT_REG_IDX_AR16, XT_REG_IDX_AR17, XT_REG_IDX_AR18, XT_REG_IDX_AR19,
+ XT_REG_IDX_AR20, XT_REG_IDX_AR21, XT_REG_IDX_AR22, XT_REG_IDX_AR23,
+ XT_REG_IDX_AR24, XT_REG_IDX_AR25, XT_REG_IDX_AR26, XT_REG_IDX_AR27,
+ XT_REG_IDX_AR28, XT_REG_IDX_AR29, XT_REG_IDX_AR30, XT_REG_IDX_AR31,
+ XT_REG_IDX_AR32, XT_REG_IDX_AR33, XT_REG_IDX_AR34, XT_REG_IDX_AR35,
+ XT_REG_IDX_AR36, XT_REG_IDX_AR37, XT_REG_IDX_AR38, XT_REG_IDX_AR39,
+ XT_REG_IDX_AR40, XT_REG_IDX_AR41, XT_REG_IDX_AR42, XT_REG_IDX_AR43,
+ XT_REG_IDX_AR44, XT_REG_IDX_AR45, XT_REG_IDX_AR46, XT_REG_IDX_AR47,
+ XT_REG_IDX_AR48, XT_REG_IDX_AR49, XT_REG_IDX_AR50, XT_REG_IDX_AR51,
+ XT_REG_IDX_AR52, XT_REG_IDX_AR53, XT_REG_IDX_AR54, XT_REG_IDX_AR55,
+ XT_REG_IDX_AR56, XT_REG_IDX_AR57, XT_REG_IDX_AR58, XT_REG_IDX_AR59,
+ XT_REG_IDX_AR60, XT_REG_IDX_AR61, XT_REG_IDX_AR62, XT_REG_IDX_AR63,
+ XT_REG_IDX_LBEG, XT_REG_IDX_LEND, XT_REG_IDX_LCOUNT, XT_REG_IDX_SAR,
+ XT_REG_IDX_WINDOWBASE, XT_REG_IDX_WINDOWSTART, XT_REG_IDX_CONFIGID0, XT_REG_IDX_CONFIGID1,
+ XT_REG_IDX_PS, XT_REG_IDX_THREADPTR, XT_REG_IDX_BR, XT_REG_IDX_SCOMPARE1,
+ XT_REG_IDX_ACCLO, XT_REG_IDX_ACCHI,
+ XT_REG_IDX_M0, XT_REG_IDX_M1, XT_REG_IDX_M2, XT_REG_IDX_M3,
+ ESP32_S3_REG_IDX_GPIOOUT,
+ XT_REG_IDX_F0, XT_REG_IDX_F1, XT_REG_IDX_F2, XT_REG_IDX_F3,
+ XT_REG_IDX_F4, XT_REG_IDX_F5, XT_REG_IDX_F6, XT_REG_IDX_F7,
+ XT_REG_IDX_F8, XT_REG_IDX_F9, XT_REG_IDX_F10, XT_REG_IDX_F11,
+ XT_REG_IDX_F12, XT_REG_IDX_F13, XT_REG_IDX_F14, XT_REG_IDX_F15,
+ XT_REG_IDX_FCR, XT_REG_IDX_FSR,
+ ESP32_S3_REG_IDX_ACCX_0, ESP32_S3_REG_IDX_ACCX_1,
+ ESP32_S3_REG_IDX_QACC_H_0, ESP32_S3_REG_IDX_QACC_H_1, ESP32_S3_REG_IDX_QACC_H_2,
+ ESP32_S3_REG_IDX_QACC_H_3, ESP32_S3_REG_IDX_QACC_H_4,
+ ESP32_S3_REG_IDX_QACC_L_0, ESP32_S3_REG_IDX_QACC_L_1, ESP32_S3_REG_IDX_QACC_L_2,
+ ESP32_S3_REG_IDX_QACC_L_3, ESP32_S3_REG_IDX_QACC_L_4,
+ ESP32_S3_REG_IDX_SAR_BYTE, ESP32_S3_REG_IDX_FFT_BIT_WIDTH,
+ ESP32_S3_REG_IDX_UA_STATE_0, ESP32_S3_REG_IDX_UA_STATE_1, ESP32_S3_REG_IDX_UA_STATE_2,
+ ESP32_S3_REG_IDX_UA_STATE_3,
+ ESP32_S3_REG_IDX_Q0, ESP32_S3_REG_IDX_Q1, ESP32_S3_REG_IDX_Q2, ESP32_S3_REG_IDX_Q3,
+ ESP32_S3_REG_IDX_Q4, ESP32_S3_REG_IDX_Q5, ESP32_S3_REG_IDX_Q6, ESP32_S3_REG_IDX_Q7,
+
+ XT_REG_IDX_MMID, XT_REG_IDX_IBREAKENABLE,
+ XT_REG_IDX_MEMCTL, XT_REG_IDX_ATOMCTL, XT_REG_IDX_OCD_DDR,
+ XT_REG_IDX_IBREAKA0, XT_REG_IDX_IBREAKA1, XT_REG_IDX_DBREAKA0, XT_REG_IDX_DBREAKA1,
+ XT_REG_IDX_DBREAKC0, XT_REG_IDX_DBREAKC1,
+ XT_REG_IDX_EPC1, XT_REG_IDX_EPC2, XT_REG_IDX_EPC3, XT_REG_IDX_EPC4,
+ XT_REG_IDX_EPC5, XT_REG_IDX_EPC6, XT_REG_IDX_EPC7, XT_REG_IDX_DEPC,
+ XT_REG_IDX_EPS2, XT_REG_IDX_EPS3, XT_REG_IDX_EPS4, XT_REG_IDX_EPS5,
+ XT_REG_IDX_EPS6, XT_REG_IDX_EPS7,
+ XT_REG_IDX_EXCSAVE1, XT_REG_IDX_EXCSAVE2, XT_REG_IDX_EXCSAVE3, XT_REG_IDX_EXCSAVE4,
+ XT_REG_IDX_EXCSAVE5, XT_REG_IDX_EXCSAVE6, XT_REG_IDX_EXCSAVE7, XT_REG_IDX_CPENABLE,
+ XT_REG_IDX_INTERRUPT, XT_REG_IDX_INTSET, XT_REG_IDX_INTCLEAR, XT_REG_IDX_INTENABLE,
+ XT_REG_IDX_VECBASE, XT_REG_IDX_EXCCAUSE, XT_REG_IDX_DEBUGCAUSE, XT_REG_IDX_CCOUNT,
+ XT_REG_IDX_PRID, XT_REG_IDX_ICOUNT, XT_REG_IDX_ICOUNTLEVEL, XT_REG_IDX_EXCVADDR,
+ XT_REG_IDX_CCOMPARE0, XT_REG_IDX_CCOMPARE1, XT_REG_IDX_CCOMPARE2,
+ XT_REG_IDX_MISC0, XT_REG_IDX_MISC1, XT_REG_IDX_MISC2, XT_REG_IDX_MISC3,
+
+ XT_REG_IDX_PWRCTL, XT_REG_IDX_PWRSTAT, XT_REG_IDX_ERISTAT,
+ XT_REG_IDX_CS_ITCTRL, XT_REG_IDX_CS_CLAIMSET, XT_REG_IDX_CS_CLAIMCLR,
+ XT_REG_IDX_CS_LOCKACCESS, XT_REG_IDX_CS_LOCKSTATUS, XT_REG_IDX_CS_AUTHSTATUS,
+ XT_REG_IDX_FAULT_INFO,
+ XT_REG_IDX_TRAX_ID, XT_REG_IDX_TRAX_CTRL, XT_REG_IDX_TRAX_STAT,
+ XT_REG_IDX_TRAX_DATA, XT_REG_IDX_TRAX_ADDR, XT_REG_IDX_TRAX_PCTRIGGER,
+ XT_REG_IDX_TRAX_PCMATCH, XT_REG_IDX_TRAX_DELAY, XT_REG_IDX_TRAX_MEMSTART,
+ XT_REG_IDX_TRAX_MEMEND,
+ XT_REG_IDX_PMG, XT_REG_IDX_PMPC, XT_REG_IDX_PM0, XT_REG_IDX_PM1,
+ XT_REG_IDX_PMCTRL0, XT_REG_IDX_PMCTRL1, XT_REG_IDX_PMSTAT0, XT_REG_IDX_PMSTAT1,
+ XT_REG_IDX_OCD_ID, XT_REG_IDX_OCD_DCRCLR, XT_REG_IDX_OCD_DCRSET, XT_REG_IDX_OCD_DSR,
+ XT_REG_IDX_A0, XT_REG_IDX_A1, XT_REG_IDX_A2, XT_REG_IDX_A3,
+ XT_REG_IDX_A4, XT_REG_IDX_A5, XT_REG_IDX_A6, XT_REG_IDX_A7,
+ XT_REG_IDX_A8, XT_REG_IDX_A9, XT_REG_IDX_A10, XT_REG_IDX_A11,
+ XT_REG_IDX_A12, XT_REG_IDX_A13, XT_REG_IDX_A14, XT_REG_IDX_A15,
+};
+
+/* actually this table contains user + TIE registers
+ * TODO: for TIE registers we need to specify custom access functions instead of `xtensa_user_reg_xxx_type`*/
+static const struct xtensa_user_reg_desc esp32s3_user_regs[ESP32_S3_NUM_REGS - XT_NUM_REGS] = {
+ { "gpio_out", 0x00, 0, 32, &xtensa_user_reg_u32_type },
+ { "accx_0", 0x01, 0, 32, &xtensa_user_reg_u32_type },
+ { "accx_1", 0x02, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_h_0", 0x03, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_h_1", 0x04, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_h_2", 0x05, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_h_3", 0x06, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_h_4", 0x07, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_l_0", 0x08, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_l_1", 0x09, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_l_2", 0x0A, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_l_3", 0x0B, 0, 32, &xtensa_user_reg_u32_type },
+ { "qacc_l_4", 0x0C, 0, 32, &xtensa_user_reg_u32_type },
+ { "sar_byte", 0x0D, 0, 32, &xtensa_user_reg_u32_type },
+ { "fft_bit_width", 0x0E, 0, 32, &xtensa_user_reg_u32_type },
+ { "ua_state_0", 0x0F, 0, 32, &xtensa_user_reg_u32_type },
+ { "ua_state_1", 0x10, 0, 32, &xtensa_user_reg_u32_type },
+ { "ua_state_2", 0x11, 0, 32, &xtensa_user_reg_u32_type },
+ { "ua_state_3", 0x12, 0, 32, &xtensa_user_reg_u32_type },
+ { "q0", 0x13, 0, 128, &xtensa_user_reg_u128_type },
+ { "q1", 0x14, 0, 128, &xtensa_user_reg_u128_type },
+ { "q2", 0x15, 0, 128, &xtensa_user_reg_u128_type },
+ { "q3", 0x16, 0, 128, &xtensa_user_reg_u128_type },
+ { "q4", 0x17, 0, 128, &xtensa_user_reg_u128_type },
+ { "q5", 0x18, 0, 128, &xtensa_user_reg_u128_type },
+ { "q6", 0x19, 0, 128, &xtensa_user_reg_u128_type },
+ { "q7", 0x20, 0, 128, &xtensa_user_reg_u128_type },
+};
+
+struct esp32s3_common {
+ struct esp_xtensa_smp_common esp_xtensa_smp;
+};
+
+static int esp32s3_fetch_user_regs(struct target *target);
+static int esp32s3_queue_write_dirty_user_regs(struct target *target);
+
+static const struct xtensa_config esp32s3_xtensa_cfg = {
+ .density = true,
+ .aregs_num = XT_AREGS_NUM_MAX,
+ .windowed = true,
+ .coproc = true,
+ .fp_coproc = true,
+ .loop = true,
+ .miscregs_num = 4,
+ .threadptr = true,
+ .boolean = true,
+ .reloc_vec = true,
+ .proc_id = true,
+ .cond_store = true,
+ .mac16 = true,
+ .user_regs_num = ARRAY_SIZE(esp32s3_user_regs),
+ .user_regs = esp32s3_user_regs,
+ .fetch_user_regs = esp32s3_fetch_user_regs,
+ .queue_write_dirty_user_regs = esp32s3_queue_write_dirty_user_regs,
+ .gdb_general_regs_num = ESP32_S3_NUM_REGS_G_COMMAND,
+ .gdb_regs_mapping = esp32s3_gdb_regs_mapping,
+ .irom = {
+ .count = 2,
+ .regions = {
+ {
+ .base = ESP32_S3_IROM_LOW,
+ .size = ESP32_S3_IROM_HIGH - ESP32_S3_IROM_LOW,
+ .access = XT_MEM_ACCESS_READ,
+ },
+ {
+ .base = ESP32_S3_IROM_MASK_LOW,
+ .size = ESP32_S3_IROM_MASK_HIGH - ESP32_S3_IROM_MASK_LOW,
+ .access = XT_MEM_ACCESS_READ,
+ }
+ }
+ },
+ .iram = {
+ .count = 2,
+ .regions = {
+ {
+ .base = ESP32_S3_IRAM_LOW,
+ .size = ESP32_S3_IRAM_HIGH - ESP32_S3_IRAM_LOW,
+ .access = XT_MEM_ACCESS_READ | XT_MEM_ACCESS_WRITE,
+ },
+ {
+ .base = ESP32_S3_RTC_IRAM_LOW,
+ .size = ESP32_S3_RTC_IRAM_HIGH - ESP32_S3_RTC_IRAM_LOW,
+ .access = XT_MEM_ACCESS_READ | XT_MEM_ACCESS_WRITE,
+ },
+ }
+ },
+ .drom = {
+ .count = 1,
+ .regions = {
+ {
+ .base = ESP32_S3_DROM_LOW,
+ .size = ESP32_S3_DROM_HIGH - ESP32_S3_DROM_LOW,
+ .access = XT_MEM_ACCESS_READ,
+ },
+ }
+ },
+ .dram = {
+ .count = 4,
+ .regions = {
+ {
+ .base = ESP32_S3_DRAM_LOW,
+ .size = ESP32_S3_DRAM_HIGH - ESP32_S3_DRAM_LOW,
+ .access = XT_MEM_ACCESS_READ | XT_MEM_ACCESS_WRITE,
+ },
+ {
+ .base = ESP32_S3_RTC_DRAM_LOW,
+ .size = ESP32_S3_RTC_DRAM_HIGH - ESP32_S3_RTC_DRAM_LOW,
+ .access = XT_MEM_ACCESS_READ | XT_MEM_ACCESS_WRITE,
+ },
+ {
+ .base = ESP32_S3_RTC_DATA_LOW,
+ .size = ESP32_S3_RTC_DATA_HIGH - ESP32_S3_RTC_DATA_LOW,
+ .access = XT_MEM_ACCESS_READ | XT_MEM_ACCESS_WRITE,
+ },
+ {
+ .base = ESP32_S3_SYS_RAM_LOW,
+ .size = ESP32_S3_SYS_RAM_HIGH - ESP32_S3_SYS_RAM_LOW,
+ .access = XT_MEM_ACCESS_READ | XT_MEM_ACCESS_WRITE,
+ },
+ }
+ },
+ .exc = {
+ .enabled = true,
+ },
+ .irq = {
+ .enabled = true,
+ .irq_num = 32,
+ },
+ .high_irq = {
+ .enabled = true,
+ .excm_level = 3,
+ .nmi_num = 1,
+ },
+ .tim_irq = {
+ .enabled = true,
+ .comp_num = 3,
+ },
+ .debug = {
+ .enabled = true,
+ .irq_level = 6,
+ .ibreaks_num = 2,
+ .dbreaks_num = 2,
+ .icount_sz = 32,
+ },
+ .trace = {
+ .enabled = true,
+ .mem_sz = ESP32_S3_TRACEMEM_BLOCK_SZ,
+ },
+};
+
+static int esp32s3_fetch_user_regs(struct target *target)
+{
+ LOG_DEBUG("%s: user regs fetching is not implemented!", target_name(target));
+ return ERROR_OK;
+}
+
+static int esp32s3_queue_write_dirty_user_regs(struct target *target)
+{
+ LOG_DEBUG("%s: user regs writing is not implemented!", target_name(target));
+ return ERROR_OK;
+}
+
+/* Reset ESP32-S3's peripherals.
+ * 1. OpenOCD makes sure the target is halted; if not, tries to halt it.
+ * If that fails, tries to reset it (via OCD) and then halt.
+ * 2. OpenOCD loads the stub code into RTC_SLOW_MEM.
+ * 3. Executes the stub code from address 0x50000004.
+ * 4. The stub code changes the reset vector to 0x50000000, and triggers
+ * a system reset using RTC_CNTL_SW_SYS_RST bit.
+ * 5. Once the PRO CPU is out of reset, it executes the stub code from address 0x50000000.
+ * The stub code disables the watchdog, re-enables JTAG and the APP CPU,
+ * restores the reset vector, and enters an infinite loop.
+ * 6. OpenOCD waits until it can talk to the OCD module again, then halts the target.
+ * 7. OpenOCD restores the contents of RTC_SLOW_MEM.
+ *
+ * End result: all the peripherals except RTC_CNTL are reset, CPU's PC is undefined,
+ * PRO CPU is halted, APP CPU is in reset.
+ */
+
+const uint8_t esp32s3_reset_stub_code[] = {
+#include "../../../contrib/loaders/reset/espressif/esp32s3/cpu_reset_handler_code.inc"
+};
+
+static int esp32s3_soc_reset(struct target *target)
+{
+ int res;
+ struct target_list *head;
+ struct xtensa *xtensa;
+
+ LOG_DEBUG("start");
+ /* In order to write to peripheral registers, target must be halted first */
+ if (target->state != TARGET_HALTED) {
+ LOG_DEBUG("Target not halted before SoC reset, trying to halt it first");
+ xtensa_halt(target);
+ res = target_wait_state(target, TARGET_HALTED, 1000);
+ if (res != ERROR_OK) {
+ LOG_DEBUG("Couldn't halt target before SoC reset, trying to do reset-halt");
+ res = xtensa_assert_reset(target);
+ if (res != ERROR_OK) {
+ LOG_ERROR(
+ "Couldn't halt target before SoC reset! (xtensa_assert_reset returned %d)",
+ res);
+ return res;
+ }
+ alive_sleep(10);
+ xtensa_poll(target);
+ bool reset_halt_save = target->reset_halt;
+ target->reset_halt = true;
+ res = xtensa_deassert_reset(target);
+ target->reset_halt = reset_halt_save;
+ if (res != ERROR_OK) {
+ LOG_ERROR(
+ "Couldn't halt target before SoC reset! (xtensa_deassert_reset returned %d)",
+ res);
+ return res;
+ }
+ alive_sleep(10);
+ xtensa_poll(target);
+ xtensa_halt(target);
+ res = target_wait_state(target, TARGET_HALTED, 1000);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Couldn't halt target before SoC reset");
+ return res;
+ }
+ }
+ }
+
+ if (target->smp) {
+ foreach_smp_target(head, target->smp_targets) {
+ xtensa = target_to_xtensa(head->target);
+ /* if any of the cores is stalled unstall them */
+ if (xtensa_dm_core_is_stalled(&xtensa->dbg_mod)) {
+ LOG_TARGET_DEBUG(head->target, "Unstall CPUs before SW reset!");
+ res = target_write_u32(target,
+ ESP32_S3_RTC_CNTL_SW_CPU_STALL_REG,
+ ESP32_S3_RTC_CNTL_SW_CPU_STALL_DEF);
+ if (res != ERROR_OK) {
+ LOG_TARGET_ERROR(head->target, "Failed to unstall CPUs before SW reset!");
+ return res;
+ }
+ break; /* both cores are unstalled now, so exit the loop */
+ }
+ }
+ }
+
+ LOG_DEBUG("Loading stub code into RTC RAM");
+ uint8_t slow_mem_save[sizeof(esp32s3_reset_stub_code)];
+
+ /* Save contents of RTC_SLOW_MEM which we are about to overwrite */
+ res = target_read_buffer(target, ESP32_S3_RTC_SLOW_MEM_BASE, sizeof(slow_mem_save), slow_mem_save);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to save contents of RTC_SLOW_MEM (%d)!", res);
+ return res;
+ }
+
+ /* Write stub code into RTC_SLOW_MEM */
+ res = target_write_buffer(target,
+ ESP32_S3_RTC_SLOW_MEM_BASE,
+ sizeof(esp32s3_reset_stub_code),
+ esp32s3_reset_stub_code);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write stub (%d)!", res);
+ return res;
+ }
+
+ LOG_DEBUG("Resuming the target");
+ xtensa = target_to_xtensa(target);
+ xtensa->suppress_dsr_errors = true;
+ res = xtensa_resume(target, 0, ESP32_S3_RTC_SLOW_MEM_BASE + 4, 0, 0);
+ xtensa->suppress_dsr_errors = false;
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to run stub (%d)!", res);
+ return res;
+ }
+ LOG_DEBUG("resume done, waiting for the target to come alive");
+
+ /* Wait for SoC to reset */
+ alive_sleep(100);
+ int64_t timeout = timeval_ms() + 100;
+ bool get_timeout = false;
+ while (target->state != TARGET_RESET && target->state != TARGET_RUNNING) {
+ alive_sleep(10);
+ xtensa_poll(target);
+ if (timeval_ms() >= timeout) {
+ LOG_TARGET_ERROR(target,
+ "Timed out waiting for CPU to be reset, target state=%d",
+ target->state);
+ get_timeout = true;
+ break;
+ }
+ }
+
+ /* Halt the CPU again */
+ LOG_DEBUG("halting the target");
+ xtensa_halt(target);
+ res = target_wait_state(target, TARGET_HALTED, 1000);
+ if (res == ERROR_OK) {
+ LOG_DEBUG("restoring RTC_SLOW_MEM");
+ res = target_write_buffer(target, ESP32_S3_RTC_SLOW_MEM_BASE, sizeof(slow_mem_save), slow_mem_save);
+ if (res != ERROR_OK)
+ LOG_TARGET_ERROR(target, "Failed to restore contents of RTC_SLOW_MEM (%d)!", res);
+ } else {
+ LOG_TARGET_ERROR(target, "Timed out waiting for CPU to be halted after SoC reset");
+ }
+
+ return get_timeout ? ERROR_TARGET_TIMEOUT : res;
+}
+
+static int esp32s3_disable_wdts(struct target *target)
+{
+ /* TIMG1 WDT */
+ int res = target_write_u32(target, ESP32_S3_TIMG0WDT_PROTECT, ESP32_S3_WDT_WKEY_VALUE);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write ESP32_S3_TIMG0WDT_PROTECT (%d)!", res);
+ return res;
+ }
+ res = target_write_u32(target, ESP32_S3_TIMG0WDT_CFG0, 0);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write ESP32_S3_TIMG0WDT_CFG0 (%d)!", res);
+ return res;
+ }
+ /* TIMG2 WDT */
+ res = target_write_u32(target, ESP32_S3_TIMG1WDT_PROTECT, ESP32_S3_WDT_WKEY_VALUE);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write ESP32_S3_TIMG1WDT_PROTECT (%d)!", res);
+ return res;
+ }
+ res = target_write_u32(target, ESP32_S3_TIMG1WDT_CFG0, 0);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write ESP32_S3_TIMG1WDT_CFG0 (%d)!", res);
+ return res;
+ }
+ /* RTC WDT */
+ res = target_write_u32(target, ESP32_S3_RTCWDT_PROTECT, ESP32_S3_WDT_WKEY_VALUE);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write ESP32_S3_RTCWDT_PROTECT (%d)!", res);
+ return res;
+ }
+ res = target_write_u32(target, ESP32_S3_RTCWDT_CFG, 0);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write ESP32_S3_RTCWDT_CFG (%d)!", res);
+ return res;
+ }
+ /* Enable SWD auto-feed */
+ res = target_write_u32(target, ESP32_S3_SWD_WPROTECT_REG, ESP32_S3_SWD_WKEY_VALUE);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write ESP32_S3_SWD_WPROTECT_REG (%d)!", res);
+ return res;
+ }
+ uint32_t swd_conf_reg = 0;
+ res = target_read_u32(target, ESP32_S3_SWD_CONF_REG, &swd_conf_reg);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to read ESP32_S3_SWD_CONF_REG (%d)!", res);
+ return res;
+ }
+ swd_conf_reg |= ESP32_S3_SWD_AUTO_FEED_EN_M;
+ res = target_write_u32(target, ESP32_S3_SWD_CONF_REG, swd_conf_reg);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to write ESP32_S3_SWD_CONF_REG (%d)!", res);
+ return res;
+ }
+ return ERROR_OK;
+}
+
+static int esp32s3_on_halt(struct target *target)
+{
+ return esp32s3_disable_wdts(target);
+}
+
+static int esp32s3_arch_state(struct target *target)
+{
+ return ERROR_OK;
+}
+
+static int esp32s3_virt2phys(struct target *target,
+ target_addr_t virtual, target_addr_t *physical)
+{
+ if (physical) {
+ *physical = virtual;
+ return ERROR_OK;
+ }
+ return ERROR_FAIL;
+}
+
+
+static int esp32s3_target_init(struct command_context *cmd_ctx, struct target *target)
+{
+ return esp_xtensa_target_init(cmd_ctx, target);
+}
+
+static const struct xtensa_debug_ops esp32s3_dbg_ops = {
+ .queue_enable = xtensa_dm_queue_enable,
+ .queue_reg_read = xtensa_dm_queue_reg_read,
+ .queue_reg_write = xtensa_dm_queue_reg_write
+};
+
+static const struct xtensa_power_ops esp32s3_pwr_ops = {
+ .queue_reg_read = xtensa_dm_queue_pwr_reg_read,
+ .queue_reg_write = xtensa_dm_queue_pwr_reg_write
+};
+
+static const struct esp_xtensa_smp_chip_ops esp32s3_chip_ops = {
+ .reset = esp32s3_soc_reset,
+ .on_halt = esp32s3_on_halt
+};
+
+static int esp32s3_target_create(struct target *target, Jim_Interp *interp)
+{
+ struct xtensa_debug_module_config esp32s3_dm_cfg = {
+ .dbg_ops = &esp32s3_dbg_ops,
+ .pwr_ops = &esp32s3_pwr_ops,
+ .tap = target->tap,
+ .queue_tdi_idle = NULL,
+ .queue_tdi_idle_arg = NULL
+ };
+
+ struct esp32s3_common *esp32s3 = calloc(1, sizeof(struct esp32s3_common));
+ if (!esp32s3) {
+ LOG_ERROR("Failed to alloc memory for arch info!");
+ return ERROR_FAIL;
+ }
+
+ int ret = esp_xtensa_smp_init_arch_info(target,
+ &esp32s3->esp_xtensa_smp,
+ &esp32s3_xtensa_cfg,
+ &esp32s3_dm_cfg,
+ &esp32s3_chip_ops);
+ if (ret != ERROR_OK) {
+ LOG_ERROR("Failed to init arch info!");
+ free(esp32s3);
+ return ret;
+ }
+
+ /* Assume running target. If different, the first poll will fix this. */
+ target->state = TARGET_RUNNING;
+ target->debug_reason = DBG_REASON_NOTHALTED;
+ return ERROR_OK;
+}
+
+static const struct command_registration esp32s3_command_handlers[] = {
+ {
+ .usage = "",
+ .chain = esp_xtensa_smp_command_handlers,
+ },
+ {
+ .name = "esp32",
+ .usage = "",
+ .chain = smp_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+/** Holds methods for Xtensa targets. */
+struct target_type esp32s3_target = {
+ .name = "esp32s3",
+
+ .poll = esp_xtensa_smp_poll,
+ .arch_state = esp32s3_arch_state,
+
+ .halt = xtensa_halt,
+ .resume = esp_xtensa_smp_resume,
+ .step = esp_xtensa_smp_step,
+
+ .assert_reset = esp_xtensa_smp_assert_reset,
+ .deassert_reset = esp_xtensa_smp_deassert_reset,
+ .soft_reset_halt = esp_xtensa_smp_soft_reset_halt,
+
+ .virt2phys = esp32s3_virt2phys,
+ .mmu = xtensa_mmu_is_enabled,
+ .read_memory = xtensa_read_memory,
+ .write_memory = xtensa_write_memory,
+
+ .read_buffer = xtensa_read_buffer,
+ .write_buffer = xtensa_write_buffer,
+
+ .checksum_memory = xtensa_checksum_memory,
+
+ .get_gdb_arch = xtensa_get_gdb_arch,
+ .get_gdb_reg_list = xtensa_get_gdb_reg_list,
+
+ .add_breakpoint = esp_xtensa_breakpoint_add,
+ .remove_breakpoint = esp_xtensa_breakpoint_remove,
+
+ .add_watchpoint = esp_xtensa_smp_watchpoint_add,
+ .remove_watchpoint = esp_xtensa_smp_watchpoint_remove,
+
+ .target_create = esp32s3_target_create,
+ .init_target = esp32s3_target_init,
+ .examine = xtensa_examine,
+ .deinit_target = esp_xtensa_target_deinit,
+
+ .commands = esp32s3_command_handlers,
+};
projects / fw / openocd / commitdiff