giga_r1: load firmware image from QSPI flash

Reduces flash image size by 400kB.

Author: pillo79

loader/blobs/4343WA1_bin_qspi.c

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2025 Arduino SA
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/devicetree.h>
+#include "wiced_resource.h"
+
+#define QUADSPI_MMAP_BASE   DT_REG_ADDR_BY_IDX(DT_NODELABEL(quadspi), 1)
+#define FLASH_CHIP_OFFSET   DT_REG_ADDR(DT_NODELABEL(qspi_flash))
+#define AIROC_PART_OFS      DT_REG_ADDR(DT_NODELABEL(airoc_firmware))
+
+#define FW_ADDR (QUADSPI_MMAP_BASE + FLASH_CHIP_OFFSET + AIROC_PART_OFS)
+#define FW_SIZE 421098 /* same as the _bin.c file */
+
+const resource_hnd_t wifi_firmware_image = {
+	RESOURCE_IN_MEMORY,
+	FW_SIZE,
+	{ .mem = { (const char *) FW_ADDR } }
+};

loader/blobs/CMakeLists.txt

@@ -14,5 +14,5 @@ endif()
 if(CONFIG_AIROC_WIFI_CUSTOM)
     zephyr_include_directories(${CMAKE_CURRENT_LIST_DIR}) # for wifi_nvram_image.h
     zephyr_library_sources(4343WA1_clm_blob.c)
-    zephyr_library_sources(4343WA1_bin.c)
+    zephyr_library_sources(4343WA1_bin_qspi.c) # use _bin.c for a static build
 endif()

variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf

@@ -70,6 +70,7 @@ CONFIG_SDIO_STACK=y
 CONFIG_SDHC_INIT_PRIORITY=75
 
 CONFIG_AIROC_WIFI_CUSTOM=y
+CONFIG_STM32_MEMMAP=y
 
 CONFIG_NETWORKING=y
 CONFIG_WIFI=y

variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.overlay

@@ -342,6 +342,45 @@
 	};
 };
 
+qspi_flash: &n25q128a1 {
+	/delete-node/ partitions;
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Partition 1: WiFi firmware and certificates 1MB - 4kB */
+		wlan_partition: partition@1000 {
+			label = "wlan";
+			reg = <0x001000 DT_SIZE_K(1020)>;
+		};
+
+		/* Partition 2: OTA 5MB */
+		ota_partition: partition@100000 {
+			label = "ota";
+			reg = <0x100000 DT_SIZE_M(5)>;
+		};
+
+		/* Partition 3: Provisioning KVStore 1MB */
+		kvs_partition: partition@600000 {
+			label = "kvs";
+			reg = <0x600000 DT_SIZE_M(1)>;
+		};
+
+		/* Partition 4: User data 7MB */
+		storage_partition: partition@700000 {
+			label = "storage";
+			reg = <0x700000 DT_SIZE_M(7)>;
+		};
+
+		/* Partition 5: Binary FW image for the Airoc WLAN */
+		airoc_firmware: partition@f80000 {
+			label = "4343WA1.bin";
+			reg = <0xf80000 DT_SIZE_K(512)>;
+		};
+	};
+};
+
 / {
 	zephyr,user {
 		digital-pin-gpios = <&arduino_header 6 0>,