flash/esp: Adds ESP32-S3 flash support

contrib/loaders/flash/esp/esp32/stub_flasher_chip.c

@@ -178,16 +178,6 @@ static bool esp32_flash_cache_enabled(uint32_t cpuid)
 	return result;
 }
 
-static inline uint32_t stub_get_coreid()
-{
-	int id;
-	__asm__ volatile (
-		"rsr.prid %0\n"
-		" extui %0,%0,13,1"
-		: "=r" (id));
-	return id;
-}
-
 static uint32_t esp32_flash_exec_usr_cmd(uint32_t cmd)
 {
 	uint32_t status_value = ESP_ROM_SPIFLASH_BUSY_FLAG;

contrib/loaders/flash/esp/esp32s3/Makefile

@@ -0,0 +1,59 @@
+# Makefile to compile the flasher stub program
+#
+# Note that YOU DO NOT NEED TO COMPILE THIS IN ORDER TO JUST USE
+
+# See the comments in the top of the Makefile for parameters that
+# you probably want to override.
+#
+# Copyright (c) 2021 Espressif Systems
+# All rights reserved
+#
+#
+# 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, write to the Free Software Foundation, Inc., 51 Franklin
+# Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# Prefix for ESP32-S3 cross compilers (can include a directory path)
+CROSS ?= xtensa-esp32s3-elf-
+
+# Path to the esp-idf root dir
+IDF_PATH ?= ../..
+
+STUB_CHIP_PATH := $(shell pwd)
+STUB_COMMON_PATH := $(STUB_CHIP_PATH)/..
+STUB_CHIP_ARCH_PATH := $(STUB_COMMON_PATH)/xtensa
+STUB_OBJ_DEPS := sdkconfig.h
+STUB_LD_SCRIPT := stub.ld
+STUB_CHIP := ESP32S3
+
+SRCS := $(IDF_PATH)/components/app_trace/port/xtensa/port.c \
+	$(IDF_PATH)/components/xtensa/eri.c \
+	$(IDF_PATH)/components/esp_hw_support/port/esp32s3/rtc_clk.c \
+	$(IDF_PATH)/components/esp_hw_support/port/esp32s3/rtc_clk_init.c \
+	$(IDF_PATH)/components/esp_hw_support/port/esp32s3/rtc_time.c
+
+CFLAGS := -mlongcalls -mtext-section-literals
+
+INCLUDES := -I$(IDF_PATH)/components/esp32s3/include -I$(IDF_PATH)/components/soc/esp32s3/include \
+	-I$(IDF_PATH)/components/esp_rom/include/esp32s3 -I$(IDF_PATH)/components/xtensa/esp32s3/include \
+	-I$(IDF_PATH)/components/hal/esp32s3/include \
+	-I$(IDF_PATH)/components/esp_hw_support/port/esp32s3/private_include \
+	-I$(IDF_PATH)/components/esp_hw_support/port/esp32s3 \
+	-I$(IDF_PATH)/components/xtensa/include \
+	-I$(IDF_PATH)/components/freertos/include \
+	-I$(IDF_PATH)/components/freertos/port/xtensa/include
+
+DEFINES :=
+
+LDFLAGS := -L$(IDF_PATH)/components/esp32s3/ld -T$(IDF_PATH)/components/esp_rom/esp32s3/ld/esp32s3.rom.ld \
+	-T$(IDF_PATH)/components/esp_rom/esp32s3/ld/esp32s3.rom.api.ld
+
+include ../stub_common.mk

contrib/loaders/flash/esp/esp32s3/sdkconfig.h

@@ -0,0 +1,33 @@
+#ifndef _STUB_SDKCONFIG_H_
+#define _STUB_SDKCONFIG_H_
+
+#define CONFIG_IDF_TARGET_ARCH_XTENSA 1
+#define CONFIG_IDF_TARGET_ESP32S3 1
+#define CONFIG_FREERTOS_UNICORE 0
+/* Use ROM flash driver patch
+ * #define CONFIG_SPI_FLASH_ROM_DRIVER_PATCH       1
+ * Disable application module multi-threading lock */
+#define CONFIG_APPTRACE_LOCK_ENABLE       0
+/* Enable apptarce module for flash data transfers */
+#define CONFIG_APPTRACE_DEST_JTAG 1
+#define CONFIG_APPTRACE_MEMBUFS_APPTRACE_PROTO_ENABLE 1
+#define CONFIG_APPTRACE_ENABLE 1
+#define CONFIG_APPTRACE_BUF_SIZE 0
+#define CONFIG_APPTRACE_PENDING_DATA_SIZE_MAX 0
+/* Debug UART number */
+#define CONFIG_CONSOLE_UART_NUM                 0
+/* Debug UART baudrate */
+#define CONFIG_CONSOLE_UART_BAUDRATE            115200
+/* alloc apptrace data buffers on stack */
+#define CONFIG_STUB_STACK_DATA_POOL_SIZE        (2*CONFIG_APPTRACE_BUF_SIZE)
+
+/* needed due to apptrace sources usage */
+#define CONFIG_LOG_MAXIMUM_LEVEL                0
+/* needed due to various checks in IDF headers */
+#define CONFIG_FREERTOS_MAX_TASK_NAME_LEN       16
+/* TODO: use current clk, get it from PLL settings */
+#define CONFIG_ESP32S3_DEFAULT_CPU_FREQ_MHZ       160
+/* Unused by stub, just for compilation of IDF */
+#define CONFIG_PARTITION_TABLE_OFFSET           0x8000
+
+#endif	/*_STUB_SDKCONFIG_H_ */

contrib/loaders/flash/esp/esp32s3/stub.ld

@@ -0,0 +1,29 @@
+/***************************************************************************
+ *   LD script for ESP32-S3 flasher stub                                   *
+ *   Copyright (C) 2021 Espressif Systems Ltd.                             *
+ *   Author: Alexey Gerenkov <alexey@espressif.com>                        *
+ *                                                                         *
+ *   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, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ ***************************************************************************/
+
+MEMORY {
+  /* place stub at the beginning of the OpenOCD working area,
+     remaining space will be used for other chunks */
+  iram : org = 0x403B0000, len = 0x4000
+  dram : org = 0x3FCE0000, len = 0xC000
+}
+
+INCLUDE stub_common.ld