[chip flash] add drv_flash_l1.c for stm32l1xxx (#9077)

* [chip flash] add drv_flash_l1.c for stm32l1xxx

* [fix] Modified the SConscript file to support building for STM32L1xxx.

bsp/stm32/libraries/HAL_Drivers/drivers/SConscript

@@ -89,6 +89,9 @@ if GetDepend(['BSP_USING_ON_CHIP_FLASH', 'SOC_SERIES_STM32F4']):
 if GetDepend(['BSP_USING_ON_CHIP_FLASH', 'SOC_SERIES_STM32F7']):
     src += [os.path.join('drv_flash', 'drv_flash_f7.c')]
 
+if GetDepend(['BSP_USING_ON_CHIP_FLASH', 'SOC_SERIES_STM32L1']):
+    src += [os.path.join('drv_flash', 'drv_flash_l1.c')]
+
 if GetDepend(['BSP_USING_ON_CHIP_FLASH', 'SOC_SERIES_STM32L4']):
     src += [os.path.join('drv_flash', 'drv_flash_l4.c')]
 

bsp/stm32/libraries/HAL_Drivers/drivers/drv_flash/drv_flash_l1.c

@@ -0,0 +1,188 @@
+/*
+ * Copyright (c) 2024, chasel
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author            Notes
+ * 2024-6-21      chasel            first version
+ */
+
+#include <board.h>
+#include <rtconfig.h>
+#include <rtdef.h>
+
+#ifdef BSP_USING_ON_CHIP_FLASH
+#include "drv_config.h"
+#include "drv_flash.h"
+
+#if defined(RT_USING_FAL)
+#include "fal.h"
+#endif
+
+#define DRV_DEBUG
+#define LOG_TAG                "drv.flash"
+#include <drv_log.h>
+
+/**
+ * Read data from flash.
+ * @note This operation's units is word.
+ *
+ * @param addr flash address
+ * @param buf buffer to store read data
+ * @param size read bytes size
+ *
+ * @return result
+ */
+int stm32_flash_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size)
+{
+    size_t i;
+
+    if ((addr + size) > STM32_FLASH_END_ADDRESS)
+    {
+        LOG_E("read outrange flash size! addr is (0x%p)", (void* )(addr + size));
+        return -RT_EINVAL;
+    }
+
+    for (i = 0; i < size; i++, buf++, addr++)
+    {
+        *buf = *(rt_uint8_t *) addr;
+    }
+
+    return size;
+}
+
+/**
+ * Write data to flash.
+ * @note This operation's units is word.
+ * @note This operation must after erase. @see flash_erase.
+ *
+ * @param addr flash address
+ * @param buf the write data buffer
+ * @param size write bytes size
+ *
+ * @return result
+ */
+
+int stm32_flash_write(rt_uint32_t addr, const uint8_t *buf, size_t size)
+{
+    rt_err_t result = RT_EOK;
+    rt_uint32_t end_addr = addr + size;
+
+    if (addr % 4 != 0)
+    {
+        LOG_E("write addr must be 4-byte alignment");
+        return -RT_EINVAL;
+    }
+
+    if ((end_addr) > STM32_FLASH_END_ADDRESS)
+    {
+        LOG_E("write outrange flash size! addr is (0x%p)", (void * )(addr + size));
+        return -RT_EINVAL;
+    }
+
+    HAL_FLASH_Unlock();
+
+    while (addr < end_addr)
+    {
+        if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, addr, *((rt_uint32_t *) buf)) == HAL_OK)
+        {
+            if (*(rt_uint32_t *) addr != *(rt_uint32_t *) buf)
+            {
+                result = -RT_ERROR;
+                break;
+            }
+            addr += 4;
+            buf += 4;
+        }
+        else
+        {
+            result = -RT_ERROR;
+            break;
+        }
+    }
+
+    HAL_FLASH_Lock();
+
+    if (result != RT_EOK)
+    {
+        return result;
+    }
+
+    return size;
+}
+
+/**
+ * Erase data on flash.
+ * @note This operation is irreversible.
+ * @note This operation's units is different which on many chips.
+ *
+ * @param addr flash address
+ * @param size erase bytes size
+ *
+ * @return result
+ */
+int stm32_flash_erase(rt_uint32_t addr, size_t size)
+{
+    rt_err_t result = RT_EOK;
+    uint32_t PAGEError = 0;
+
+    /*Variable used for Erase procedure*/
+    FLASH_EraseInitTypeDef EraseInitStruct;
+
+    if ((addr + size) > STM32_FLASH_END_ADDRESS)
+    {
+        LOG_E("ERROR: erase outrange flash size! addr is (0x%p)\n", (void * )(addr + size));
+        return -RT_EINVAL;
+    }
+
+    HAL_FLASH_Unlock();
+
+    /* Fill EraseInit structure*/
+    EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
+    EraseInitStruct.PageAddress = addr;
+    EraseInitStruct.NbPages = (size + FLASH_PAGE_SIZE - 1) / FLASH_PAGE_SIZE;
+
+    if (HAL_FLASHEx_Erase(&EraseInitStruct, &PAGEError) != HAL_OK)
+    {
+        result = -RT_ERROR;
+        goto __exit;
+    }
+
+    __exit: HAL_FLASH_Lock();
+
+    if (result != RT_EOK)
+    {
+        return result;
+    }
+
+    LOG_D("erase done: addr (0x%p), size %d", (void* )addr, size);
+    return size;
+}
+
+#if defined(RT_USING_FAL)
+
+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 stm32_onchip_flash = { "onchip_flash", STM32_FLASH_START_ADRESS, STM32_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 stm32_flash_read(stm32_onchip_flash.addr + offset, buf, size);
+}
+
+static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size)
+{
+    return stm32_flash_write(stm32_onchip_flash.addr + offset, buf, size);
+}
+
+static int fal_flash_erase(long offset, size_t size)
+{
+    return stm32_flash_erase(stm32_onchip_flash.addr + offset, size);
+}
+
+#endif
+#endif /* BSP_USING_ON_CHIP_FLASH */