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

@@ -529,3 +529,7 @@
 		dac-resolution = <12>;
 	};
 };
+
+/* Include common flash filesystem configuration */
+qspi_flash: &n25q128a1 {};
+#include "../common/arduino_flash_fs.dtsi"

variants/common/arduino_flash_fs.dtsi

@@ -0,0 +1,110 @@
+/*
+ * Common filesystem configuration
+ *
+ * This file defines the following:
+ *
+ * 1- Common partition layout for 16MB flash:
+ * - mbr: 4KB @ 0x000000 (Master Boot Record - protected)
+ * - wlan: ~1020KB @ 0x001000 (Network certificates)
+ * - ota: 5MB @ 0x100000 (OTA updates)
+ * - kvs: 1MB @ 0x600000 (Key-Value Store)
+ * - storage: 7MB @ 0x700000 (User data)
+ *
+ * 2- fstab entries and flash-disk devices for:
+ * - /wlan: (FAT) - Network certificates partition
+ * - /ota: (FAT) - OTA update partition
+ * - /storage (LittleFS) - User data partition
+ */
+&qspi_flash {
+	/delete-node/ partitions;
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		mbr_partition: partition@0 {
+			label = "mbr";
+			reg = <0x000000 DT_SIZE_K(4)>;
+		};
+
+		/* Partition 1: Network certificates 1MB - 4KB (MBR reserved at 0x0) */
+		wlan_partition: partition@1000 {
+			label = "wlan";
+			reg = <0x001000 (DT_SIZE_M(1) - DT_SIZE_K(4))>;
+		};
+
+		/* 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)>;
+		};
+	};
+};
+
+/ {
+	flash_disk0 {
+		status = "okay";
+		compatible = "zephyr,flash-disk";
+		partition = <&wlan_partition>;
+		disk-name = "wlan";
+		sector-size = <4096>;
+		cache-size = <4096>;
+	};
+
+	flash_disk1 {
+		status = "okay";
+		compatible = "zephyr,flash-disk";
+		partition = <&ota_partition>;
+		disk-name = "ota";
+		sector-size = <4096>;
+		cache-size = <4096>;
+	};
+
+	fstab {
+		compatible = "zephyr,fstab";
+
+		wlan_fs: wlan_fs {
+			compatible = "zephyr,fstab,fatfs";
+			automount;
+			disk-access;
+			mount-point = "/wlan:";
+		};
+
+		ota_fs: ota_fs {
+			compatible = "zephyr,fstab,fatfs";
+			automount;
+			disk-access;
+			mount-point = "/ota:";
+		};
+
+		storage_fs: storage_fs {
+			compatible = "zephyr,fstab,littlefs";
+			automount;
+			mount-point = "/storage";
+			partition = <&storage_partition>;
+			read-size = <16>;
+			prog-size = <4096>;
+			cache-size = <4096>;
+			lookahead-size = <32>;
+			block-cycles = <512>;
+		};
+	};
+};