loader: sketch heap size config defined

andreagilardoni · andreagilardoni · commit 930166468bbc · 2026-02-24T13:23:30.000+01:00
Defined config for sketch heap size, now LLEXT_HEAP_SIZE defaults to this
value

Signed-off-by: Andrea Gilardoni &lt;a.gilardoni@arduino.cc&gt;
diff --git a/loader/Kconfig b/loader/Kconfig
@@ -4,6 +4,10 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
+config LLEXT_HEAP_SIZE
+	int
+	default SKETCH_HEAP_SIZE
+
 source "Kconfig.zephyr"
 
 config LLEXT_HEAP_REGION
@@ -17,3 +21,9 @@ config MAIN_STACK_REGION
 	depends on CODE_DATA_RELOCATION
 	help
 	  Specify the memory region for main stack.
+
+config SKETCH_HEAP_SIZE
+	int "Sketch heap size in KB"
+	default 32
+	help
+	  Specify the size in KB for the sketch heap
diff --git a/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf b/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf
@@ -14,7 +14,7 @@ CONFIG_LLEXT_STORAGE_WRITABLE=n
 CONFIG_SHARED_MULTI_HEAP=y
 CONFIG_HEAP_MEM_POOL_SIZE=32768
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_SKETCH_HEAP_SIZE=128
 CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=-1
 
 CONFIG_CODE_DATA_RELOCATION=y
diff --git a/variants/arduino_nano_33_ble_nrf52840_sense/arduino_nano_33_ble_nrf52840_sense.conf b/variants/arduino_nano_33_ble_nrf52840_sense/arduino_nano_33_ble_nrf52840_sense.conf
@@ -32,7 +32,7 @@ CONFIG_PWM=y
 
 CONFIG_LLEXT_STORAGE_WRITABLE=n
 CONFIG_HEAP_MEM_POOL_SIZE=16384
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_SKETCH_HEAP_SIZE=128
 CONFIG_MAIN_STACK_SIZE=16384
 CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=-1
 
diff --git a/variants/arduino_nano_matter_mgm240sd22vna/arduino_nano_matter_mgm240sd22vna.conf b/variants/arduino_nano_matter_mgm240sd22vna/arduino_nano_matter_mgm240sd22vna.conf
@@ -1,6 +1,6 @@
 CONFIG_MAIN_STACK_SIZE=16000
 CONFIG_HEAP_MEM_POOL_SIZE=112000
-CONFIG_LLEXT_HEAP_SIZE=64
+CONFIG_SKETCH_HEAP_SIZE=64
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
 CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=-1
 
diff --git a/variants/arduino_nicla_sense_me_nrf52832/arduino_nicla_sense_me_nrf52832.conf b/variants/arduino_nicla_sense_me_nrf52832/arduino_nicla_sense_me_nrf52832.conf
@@ -23,6 +23,6 @@ CONFIG_ADC=y
 
 CONFIG_LLEXT_STORAGE_WRITABLE=n
 CONFIG_HEAP_MEM_POOL_SIZE=8192
-CONFIG_LLEXT_HEAP_SIZE=15
+CONFIG_SKETCH_HEAP_SIZE=15
 CONFIG_MAIN_STACK_SIZE=2048
 CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=-1
diff --git a/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.conf b/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.conf
@@ -13,7 +13,7 @@ CONFIG_LLEXT_STORAGE_WRITABLE=n
 
 CONFIG_HEAP_MEM_POOL_SIZE=32768
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_SKETCH_HEAP_SIZE=128
 CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=-1
 
 CONFIG_CODE_DATA_RELOCATION=y
diff --git a/variants/arduino_portenta_c33_r7fa6m5bh3cfc/arduino_portenta_c33_r7fa6m5bh3cfc.conf b/variants/arduino_portenta_c33_r7fa6m5bh3cfc/arduino_portenta_c33_r7fa6m5bh3cfc.conf
@@ -25,7 +25,7 @@ CONFIG_LOG_BACKEND_UART_AUTOSTART=n
 CONFIG_LOG_DEFAULT_LEVEL=2
 
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_SKETCH_HEAP_SIZE=128
 CONFIG_HEAP_MEM_POOL_SIZE=32768
 CONFIG_ISR_STACK_SIZE=8192
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=8192
diff --git a/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.conf b/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.conf
@@ -29,7 +29,7 @@ CONFIG_ARM_MPU=y
 CONFIG_MAX_THREAD_BYTES=4
 
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_SKETCH_HEAP_SIZE=128
 
 CONFIG_CODE_DATA_RELOCATION=y
 CONFIG_MAIN_STACK_REGION="DTCM"
diff --git a/variants/arduino_uno_q_stm32u585xx/arduino_uno_q_stm32u585xx.conf b/variants/arduino_uno_q_stm32u585xx/arduino_uno_q_stm32u585xx.conf
@@ -1,6 +1,6 @@
 CONFIG_LLEXT_STORAGE_WRITABLE=n
 CONFIG_HEAP_MEM_POOL_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_SKETCH_HEAP_SIZE=128
 CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=-1
 
 CONFIG_FPU=y
