[bsp][pico] add flash driver (#8161)

bsp/raspberry-pico/Kconfig

@@ -43,6 +43,12 @@ menu "Onboard Peripheral Drivers"
             select PKG_USING_LV_MUSIC_DEMO
             default y
     endif
+
+    config BSP_USING_ON_CHIP_FLASH
+        bool "Enable On-Chip FLASH"
+        select FAL_DEBUG_CONFIG
+        select FAL_PART_HAS_TABLE_CFG
+        default n
 endmenu
 
 menu "On-chip Peripheral Drivers"

bsp/raspberry-pico/drivers/SConscript

@@ -28,6 +28,9 @@ if GetDepend('BSP_USING_SPI'):
 if GetDepend('BSP_USING_I2C'):
     src += ['drv_i2c.c']
 
+if GetDepend('BSP_USING_ON_CHIP_FLASH'):
+    src += ['drv_flash.c']
+
 group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
 
 Return('group')

bsp/raspberry-pico/drivers/drv_flash.c

@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author            Notes
+ * 2023-10-19     ChuShicheng       first version
+ */
+#include "drv_flash.h"
+#include "board.h"
+#include "hardware/flash.h"
+
+#ifdef BSP_USING_ON_CHIP_FLASH
+
+#define DBG_LEVEL DBG_LOG
+#define LOG_TAG  "DRV.FLASH"
+#include <rtdbg.h>
+
+#define FLASH_SIZE           2 * 1024 * 1024
+#define FLASH_START_ADRESS   0x0000000
+
+int _flash_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size)
+{
+    rt_memcpy(buf, (const void *)(XIP_BASE + addr), size);
+
+    return size;
+}
+
+int _flash_write(rt_uint32_t addr, const rt_uint8_t *buf, size_t size)
+{
+    if (addr % FLASH_PAGE_SIZE != 0)
+    {
+        LOG_E("write addr must be %d-byte alignment", FLASH_PAGE_SIZE);
+        return -RT_EINVAL;
+    }
+
+    if (size % FLASH_PAGE_SIZE != 0)
+    {
+        LOG_E("write size must be %d-byte alignment", FLASH_PAGE_SIZE);
+        return -RT_EINVAL;
+    }
+
+    flash_range_program(addr, buf, size);
+
+    return size;
+}
+
+int _flash_erase(rt_uint32_t addr, size_t size)
+{
+    if(size % FLASH_SECTOR_SIZE)
+    {
+        LOG_E("erase size must be %d-byte alignment", FLASH_SECTOR_SIZE);
+    }
+
+    flash_range_erase(addr, size);
+
+    return size;
+}
+
+#ifdef RT_USING_FAL
+
+#include "fal.h"
+
+static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size);
+static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size);
+static int fal_flash_erase(long offset, size_t size);
+
+const struct fal_flash_dev _onchip_flash =
+{
+    "onchip_flash",
+    FLASH_START_ADRESS,
+    FLASH_SIZE,
+    FLASH_PAGE_SIZE,
+    {
+        NULL,
+        fal_flash_read,
+        fal_flash_write,
+        fal_flash_erase
+    }
+};
+
+static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size)
+{
+    return _flash_read(_onchip_flash.addr + offset, buf, size);
+}
+
+static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size)
+{
+    return _flash_write(_onchip_flash.addr + offset, buf, size);
+}
+
+static int fal_flash_erase(long offset, size_t size)
+{
+    return _flash_erase(_onchip_flash.addr + offset, size);
+}
+
+static int rt_hw_on_chip_flash_init(void)
+{
+    fal_init();
+    return RT_EOK;
+}
+INIT_COMPONENT_EXPORT(rt_hw_on_chip_flash_init);
+
+#endif /* RT_USING_FAL */
+
+#endif /* BSP_USING_ON_CHIP_FLASH */

bsp/raspberry-pico/drivers/drv_flash.h

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author            Notes
+ * 2023-10-19     ChuShicheng       first version
+ */
+
+#ifndef __DRV_FLASH_H__
+#define __DRV_FLASH_H__
+
+#include <rtthread.h>
+
+int _flash_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size);
+int _flash_write(rt_uint32_t addr, const rt_uint8_t *buf, size_t size);
+int _flash_erase(rt_uint32_t addr, size_t size);
+
+#endif  /* __DRV_FLASH_H__ */