From a9b93ca0e55cab4787cceb2bea80f8a54d493611 Mon Sep 17 00:00:00 2001
From: Zhou Xiao <zhouxiao@espressif.com>
Date: Tue, 7 Apr 2026 19:02:14 +0800
Subject: [PATCH] fix(ble_log): ensure BLE Log IRAM functions are placed in
 IRAM on ESP32C2

On ESP32C2 with BT_CTRL_RUN_IN_FLASH_ONLY, the bt_default linker scheme
routes .iram1 sections to flash_text, causing BLE_LOG_IRAM_ATTR functions
to end up in flash instead of IRAM. Define a dedicated .ble_log_iram1
section for ESP32C2 and route it to iram0_bt_text unconditionally.
---
 .../bt/common/ble_log/src/internal_include/ble_log_util.h   | 4 ++++
 components/bt/linker_esp32c2.lf                             | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/components/bt/common/ble_log/src/internal_include/ble_log_util.h b/components/bt/common/ble_log/src/internal_include/ble_log_util.h
index 01834595e2..adc827c55e 100644
--- a/components/bt/common/ble_log/src/internal_include/ble_log_util.h
+++ b/components/bt/common/ble_log/src/internal_include/ble_log_util.h
@@ -37,7 +37,11 @@
 #define BLE_LOG_INLINE                          inline
 
 /* Section */
+#if defined(CONFIG_IDF_TARGET_ESP32C2)
+#define BLE_LOG_IRAM_ATTR                       _SECTION_ATTR_IMPL(".ble_log_iram1", __COUNTER__)
+#else
 #define BLE_LOG_IRAM_ATTR                       IRAM_ATTR
+#endif
 
 /* Memory operation */
 #define BLE_LOG_MEM_CAP                         (MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT | MALLOC_CAP_DMA)
diff --git a/components/bt/linker_esp32c2.lf b/components/bt/linker_esp32c2.lf
index c9ab4c2e49..3a07d7fde4 100644
--- a/components/bt/linker_esp32c2.lf
+++ b/components/bt/linker_esp32c2.lf
@@ -14,6 +14,10 @@ entries:
 entries:
     .sleep_iram1+
 
+[sections:bt_ble_log_iram_text]
+entries:
+    .ble_log_iram1+
+
 [sections:bt_bss]
 entries:
     .bss+
@@ -33,6 +37,7 @@ entries:
 entries:
     if BT_CTRL_RUN_IN_FLASH_ONLY = y:
         bt_iram_text -> flash_text
+        bt_ble_log_iram_text -> iram0_bt_text
         bt_bss -> dram0_bt_bss
         bt_common -> dram0_bt_bss
         bt_data -> dram0_bt_data
@@ -49,6 +54,7 @@ entries:
             bt_sleep_iram_text -> flash_text
     else:
         bt_iram_text -> iram0_bt_text
+        bt_ble_log_iram_text -> iram0_bt_text
         bt_bss -> dram0_bt_bss
         bt_common -> dram0_bt_bss
         bt_data -> dram0_bt_data