[analyze_memory] Fix ELF section mapping for RTL87xx and LN882X platforms (#13213)

esphome/analyze_memory/const.py

@@ -9,10 +9,44 @@ ESPHOME_COMPONENT_PATTERN = re.compile(r"esphome::([a-zA-Z0-9_]+)::")
 # Maps standard section names to their various platform-specific variants
 # Note: Order matters! More specific patterns (.bss) must come before general ones (.dram)
 # because ESP-IDF uses names like ".dram0.bss" which would match ".dram" otherwise
+#
+# Platform-specific sections:
+# - ESP8266/ESP32: .iram*, .dram*
+# - LibreTiny RTL87xx: .xip.code_* (flash), .ram.code_* (RAM)
+# - LibreTiny BK7231: .itcm.code (fast RAM), .vectors (interrupt vectors)
+# - LibreTiny LN882X: .flash_text, .flash_copy* (flash code)
 SECTION_MAPPING = {
-    ".text": frozenset([".text", ".iram"]),
+    ".text": frozenset(
-    ".rodata": frozenset([".rodata"]),
+        [
-    ".bss": frozenset([".bss"]),  # Must be before .data to catch ".dram0.bss"
+            ".text",
+            ".iram",
+            # LibreTiny RTL87xx XIP (eXecute In Place) flash code
+            ".xip.code",
+            # LibreTiny RTL87xx RAM code
+            ".ram.code_text",
+            # LibreTiny BK7231 fast RAM code and vectors
+            ".itcm.code",
+            ".vectors",
+            # LibreTiny LN882X flash code
+            ".flash_text",
+            ".flash_copy",
+        ]
+    ),
+    ".rodata": frozenset(
+        [
+            ".rodata",
+            # LibreTiny RTL87xx read-only data in RAM
+            ".ram.code_rodata",
+        ]
+    ),
+    # .bss patterns - must be before .data to catch ".dram0.bss"
+    ".bss": frozenset(
+        [
+            ".bss",
+            # LibreTiny LN882X BSS
+            ".bss_ram",
+        ]
+    ),
     ".data": frozenset([".data", ".dram"]),
 }
 

script/determine-jobs.py

@@ -90,6 +90,8 @@ class Platform(StrEnum):
     ESP32_S2_IDF = "esp32-s2-idf"
     ESP32_S3_IDF = "esp32-s3-idf"
     BK72XX_ARD = "bk72xx-ard"  # LibreTiny BK7231N
+    RTL87XX_ARD = "rtl87xx-ard"  # LibreTiny RTL8720x
+    LN882X_ARD = "ln882x-ard"  # LibreTiny LN882x
     RP2040_ARD = "rp2040-ard"  # Raspberry Pi Pico
 
 
@@ -122,8 +124,8 @@ PLATFORM_SPECIFIC_COMPONENTS = frozenset(
 #                      fastest build times, most sensitive to code size changes
 # 3. ESP32 IDF - Primary ESP32 platform, most representative of modern ESPHome
 # 4-6. Other ESP32 variants - Less commonly used but still supported
-# 7. BK72XX - LibreTiny platform (good for detecting LibreTiny-specific changes)
+# 7-9. LibreTiny platforms (BK72XX, RTL87XX, LN882X) - good for detecting LibreTiny-specific changes
-# 8. RP2040 - Raspberry Pi Pico platform
+# 10. RP2040 - Raspberry Pi Pico platform
 MEMORY_IMPACT_PLATFORM_PREFERENCE = [
     Platform.ESP32_C6_IDF,  # ESP32-C6 IDF (newest, supports Thread/Zigbee)
     Platform.ESP8266_ARD,  # ESP8266 Arduino (most memory constrained, fastest builds)
@@ -132,6 +134,8 @@ MEMORY_IMPACT_PLATFORM_PREFERENCE = [
     Platform.ESP32_S2_IDF,  # ESP32-S2 IDF
     Platform.ESP32_S3_IDF,  # ESP32-S3 IDF
     Platform.BK72XX_ARD,  # LibreTiny BK7231N
+    Platform.RTL87XX_ARD,  # LibreTiny RTL8720x
+    Platform.LN882X_ARD,  # LibreTiny LN882x
     Platform.RP2040_ARD,  # Raspberry Pi Pico
 ]
 
@@ -411,6 +415,8 @@ def _detect_platform_hint_from_filename(filename: str) -> Platform | None:
     - wifi_component_esp8266.cpp, *_esp8266.h -> ESP8266_ARD
     - *_esp32*.cpp -> ESP32 IDF (generic)
     - *_libretiny.cpp, *_bk72*.* -> BK72XX (LibreTiny)
+    - *_rtl87*.* -> RTL87XX (LibreTiny Realtek)
+    - *_ln882*.* -> LN882X (LibreTiny Lightning)
     - *_pico.cpp, *_rp2040.* -> RP2040_ARD
 
     Args:
@@ -444,7 +450,12 @@ def _detect_platform_hint_from_filename(filename: str) -> Platform | None:
     if "esp32" in filename_lower:
         return Platform.ESP32_IDF
 
-    # LibreTiny (via 'libretiny' pattern or BK72xx-specific files)
+    # LibreTiny platforms (check specific variants before generic libretiny)
+    # Check specific variants first to handle paths like libretiny/wifi_rtl87xx.cpp
+    if "rtl87" in filename_lower:
+        return Platform.RTL87XX_ARD
+    if "ln882" in filename_lower:
+        return Platform.LN882X_ARD
     if "libretiny" in filename_lower or "bk72" in filename_lower:
         return Platform.BK72XX_ARD
 

tests/script/test_determine_jobs.py

@@ -1472,6 +1472,24 @@ def test_detect_memory_impact_config_runs_at_component_limit(tmp_path: Path) ->
             determine_jobs.Platform.BK72XX_ARD,
         ),
         ("esphome/components/ble/ble_bk72xx.cpp", determine_jobs.Platform.BK72XX_ARD),
+        # RTL87xx (LibreTiny Realtek) detection
+        (
+            "tests/components/logger/test.rtl87xx-ard.yaml",
+            determine_jobs.Platform.RTL87XX_ARD,
+        ),
+        (
+            "esphome/components/libretiny/wifi_rtl87xx.cpp",
+            determine_jobs.Platform.RTL87XX_ARD,
+        ),
+        # LN882x (LibreTiny Lightning) detection
+        (
+            "tests/components/logger/test.ln882x-ard.yaml",
+            determine_jobs.Platform.LN882X_ARD,
+        ),
+        (
+            "esphome/components/libretiny/wifi_ln882x.cpp",
+            determine_jobs.Platform.LN882X_ARD,
+        ),
         # RP2040 / Raspberry Pi Pico detection
         ("esphome/components/gpio/gpio_rp2040.cpp", determine_jobs.Platform.RP2040_ARD),
         ("esphome/components/wifi/wifi_rp2040.cpp", determine_jobs.Platform.RP2040_ARD),
@@ -1501,6 +1519,10 @@ def test_detect_memory_impact_config_runs_at_component_limit(tmp_path: Path) ->
         "esp32_in_name",
         "libretiny",
         "bk72xx",
+        "rtl87xx_test_yaml",
+        "rtl87xx_wifi",
+        "ln882x_test_yaml",
+        "ln882x_wifi",
         "rp2040_gpio",
         "rp2040_wifi",
         "pico_i2c",