feat(esp32c5): Add UART stub support

Author: KonstantinKondrashov

esptool/targets/esp32c5.py

@@ -9,6 +9,7 @@
 from .esp32c6 import ESP32C6ROM
 from ..loader import ESPLoader
 from ..reset import HardReset
+from ..util import FatalError
 
 
 class ESP32C5ROM(ESP32C6ROM):
@@ -29,7 +30,7 @@ class ESP32C5ROM(ESP32C6ROM):
     UARTDEV_BUF_NO = 0x4085F51C  # Variable in ROM .bss which indicates the port in use
 
     # Magic value for ESP32C5
-    CHIP_DETECT_MAGIC_VALUE = [0x8082C5DC]
+    CHIP_DETECT_MAGIC_VALUE = [0x1101406F]
 
     FLASH_FREQUENCY = {
         "80m": 0xF,
@@ -119,5 +120,33 @@ def change_baud(self, baud):
         else:
             ESPLoader.change_baud(self, baud)
 
+    def check_spi_connection(self, spi_connection):
+        if not set(spi_connection).issubset(set(range(0, 29))):
+            raise FatalError("SPI Pin numbers must be in the range 0-28.")
+        if any([v for v in spi_connection if v in [13, 14]]):
+            print(
+                "WARNING: GPIO pins 13 and 14 are used by USB-Serial/JTAG, "
+                "consider using other pins for SPI flash connection."
+            )
+
+
+class ESP32C5StubLoader(ESP32C5ROM):
+    """Access class for ESP32C5 stub loader, runs on top of ROM.
+
+    (Basically the same as ESP32StubLoader, but different base class.
+    Can possibly be made into a mixin.)
+    """
+
+    FLASH_WRITE_SIZE = 0x4000  # matches MAX_WRITE_BLOCK in stub_loader.c
+    STATUS_BYTES_LENGTH = 2  # same as ESP8266, different to ESP32 ROM
+    IS_STUB = True
+
+    def __init__(self, rom_loader):
+        self.secure_download_mode = rom_loader.secure_download_mode
+        self._port = rom_loader._port
+        self._trace_enabled = rom_loader._trace_enabled
+        self.cache = rom_loader.cache
+        self.flush_input()  # resets _slip_reader
+
 
-# TODO: [ESP32C5] ESPTOOL-825, IDF-8631 support stub flasher
+ESP32C5ROM.STUB_CLASS = ESP32C5StubLoader

esptool/targets/stub_flasher/stub_flasher_32c5.json

@@ -0,0 +1,8 @@
+{
+    "entry": 1082131910,
+    "text": "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",
+    "text_start": 1082130432,
+    "data": "DACEQO4IgEA6CYBAkgmAQGAKgEDMCoBAegqAQLYHgEAcCoBAXAqAQKYJgEBmB4BA2gmAQGYHgEDICIBADAmAQDoJgECSCYBA2giAQCAIgEBQCIBA1giAQCQNgEA6CYBA5AuAQNgMgECyBoBAAg2AQLIGgECyBoBAsgaAQLIGgECyBoBAsgaAQLIGgECyBoBAgAuAQLIGgEAADIBA2AyAQA==",
+    "data_start": 1082469288,
+    "bss_start": 1082392576
+}

esptool/targets/stub_flasher/stub_flasher_32c5beta3.json

@@ -1,8 +1,8 @@
 {
-    "entry": 1082132164,
-    "text": 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y7/AvzPZQZlTWVEZZtlkmWpZaBlv2S2ZM1kxGTbZNCWGCgA==",
+    "entry": 1082131910,
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+    "data": "DACEQO4IgEA6CYBAkgmAQGAKgEDMCoBAegqAQLYHgEAcCoBAXAqAQKYJgEBmB4BA2gmAQGYHgEDICIBADAmAQDoJgECSCYBA2giAQCAIgEBQCIBA1giAQCQNgEA6CYBA5AuAQNgMgECyBoBAAg2AQLIGgECyBoBAsgaAQLIGgECyBoBAsgaAQLIGgECyBoBAgAuAQLIGgEAADIBA2AyAQA==",
+    "data_start": 1082469288,
     "bss_start": 1082392576
 }

flasher_stub/Makefile

@@ -68,6 +68,7 @@ STUB_ELF_32H2_BETA_1 = $(BUILD_DIR)/$(STUB)_32h2beta1.elf
 STUB_ELF_32H2_BETA_2 = $(BUILD_DIR)/$(STUB)_32h2beta2.elf
 STUB_ELF_32C2 = $(BUILD_DIR)/$(STUB)_32c2.elf
 STUB_ELF_32C6 = $(BUILD_DIR)/$(STUB)_32c6.elf
+STUB_ELF_32C5 = $(BUILD_DIR)/$(STUB)_32c5.elf
 STUB_ELF_32C5_BETA_3 = $(BUILD_DIR)/$(STUB)_32c5beta3.elf
 STUB_ELF_32H2 = $(BUILD_DIR)/$(STUB)_32h2.elf
 STUB_ELF_32P4 = $(BUILD_DIR)/$(STUB)_32p4.elf
@@ -94,6 +95,7 @@ STUBS_ELF += \
   $(STUB_ELF_32H2_BETA_2) \
   $(STUB_ELF_32C2) \
   $(STUB_ELF_32C6) \
+  $(STUB_ELF_32C5) \
   $(STUB_ELF_32C5_BETA_3) \
   $(STUB_ELF_32H2) \
   $(STUB_ELF_32P4)
@@ -171,6 +173,10 @@ $(STUB_ELF_32C6): $(SRCS) $(BUILD_DIR) ld/stub_32c6.ld
 	@echo "  CC(32C6)   $^ -> $@"
 	$(Q) $(CROSS_ESPRISCV32)gcc $(CFLAGS_ESPRISCV32) -DESP32C6=1 -Tstub_32c6.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)
 
+$(STUB_ELF_32C5): $(SRCS) $(BUILD_DIR) ld/stub_32c5.ld
+	@echo "  CC(32C5)   $^ -> $@"
+	$(Q) $(CROSS_ESPRISCV32)gcc $(CFLAGS_ESPRISCV32) -DESP32C5=1 -Tstub_32c5.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)
+
 $(STUB_ELF_32C5_BETA_3): $(SRCS) $(BUILD_DIR) ld/stub_32c5_beta_3.ld
 	@echo "  CC(32C5BETA3)   $^ -> $@"
 	$(Q) $(CROSS_ESPRISCV32)gcc $(CFLAGS_ESPRISCV32) -DESP32C5BETA3=1 -Tstub_32c5_beta_3.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)

flasher_stub/compare_stubs.py

@@ -68,9 +68,8 @@ def diff(path_to_new, path_to_old):
     same = True
     for chip in esptool.CHIP_LIST:
         print("Comparing {} stub: ".format(chip), end="")
-        # TODO: [ESP32C5] ESPTOOL-825 remove when supported stub flasher
         # TODO: [ESP32C61] IDF-9241 remove when supported stub flasher
-        if chip in ["esp32c5", "esp32c61"]:
+        if chip in ["esp32c61"]:
             print(f"{chip} has not supported stub yet, skipping...")
             continue
 

flasher_stub/include/rom_functions.h

@@ -18,11 +18,11 @@ int uart_rx_one_char(uint8_t *ch);
 uint8_t uart_rx_one_char_block();
 int uart_tx_one_char(char ch);
 
-#if ESP32C6 || ESP32H2 || ESP32C5BETA3 || ESP32P4
+#if ESP32C6 || ESP32H2 || ESP32C5 || ESP32C5BETA3 || ESP32P4
 /* uart_tx_one_char doesn't send data to USB device serial, needs to be replaced */
 int uart_tx_one_char2(char ch);
 #define uart_tx_one_char(ch) uart_tx_one_char2(ch)
-#endif // ESP32C6 || ESP32H2 || ESP32C5BETA3 || ESP32P4
+#endif // ESP32C6 || ESP32H2 || ESP32C5 || ESP32C5BETA3 || ESP32P4
 
 void uart_div_modify(uint32_t uart_no, uint32_t baud_div);