enable HAL FLASH API on Fast Models MPS2 targets

Author: Qinghao Shi

targets/TARGET_ARM_FM/TARGET_FVP_MPS2/flash_api.c

@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2017-2018 ARM Limited
+ *
+ * Licensed under the Apache License Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "device.h"
+#include "flash_api.h"
+#include "memory_zones.h"
+
+/* Fast Model FVP MPS2 is modeling after V2M-MPS2 platform with a FPGA (AN385).
+ * The implementation emulates flash over SRAM.
+ */
+
+#define FLASH_PAGE_SIZE   256
+#define FLASH_OFS_START   FLASH_START
+#define FLASH_SECTOR_SIZE 0x1000
+#define FLASH_OFS_END     (FLASH_OFS_START + FLASH_SIZE)
+
+int32_t flash_init(flash_t *obj)
+{
+    (void)obj;
+
+    return 0;
+}
+
+int32_t flash_free(flash_t *obj)
+{
+    (void)obj;
+
+    return 0;
+}
+
+int32_t flash_erase_sector(flash_t *obj, uint32_t address)
+{
+    (void)obj;
+
+    memset((void *)address, 0xff, FLASH_SECTOR_SIZE);
+
+    return 0;
+}
+
+int32_t flash_read(flash_t *obj, uint32_t address,
+                   uint8_t *data, uint32_t size)
+{
+    (void)obj;
+
+    memcpy(data, (void *)address, size);
+
+    return 0;
+}
+
+int32_t flash_program_page(flash_t *obj, uint32_t address,
+                           const uint8_t *data, uint32_t size)
+{
+    (void)obj;
+
+    memcpy((void *)address, data, size);
+
+    return 0;
+}
+
+uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
+{
+    (void)obj;
+
+    if (address < FLASH_OFS_START || address >= FLASH_OFS_END) {
+        return MBED_FLASH_INVALID_SIZE;
+    }
+
+    return FLASH_SECTOR_SIZE;
+}
+
+uint32_t flash_get_page_size(const flash_t *obj)
+{
+    (void)obj;
+
+    return FLASH_PAGE_SIZE;
+}
+
+uint32_t flash_get_start_address(const flash_t *obj)
+{
+    (void)obj;
+
+    return FLASH_OFS_START;
+}
+
+uint32_t flash_get_size(const flash_t *obj)
+{
+    (void)obj;
+
+    return FLASH_SIZE;
+}

targets/TARGET_ARM_FM/TARGET_FVP_MPS2/memory_zones.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2017-2018 ARM Limited
+ *
+ * Licensed under the Apache License Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * This file contains the information of memory zones for code and data on
+ * ARM Versatile Express Cortex-M Prototyping Systems (V2M-MPS2) TRM.
+ * It is used in startup code and linker scripts of supported compilers (ARM and
+ * GCC_ARM).
+ *
+ * WARNING: IAR does not include this file and re-define these values in
+ * MPS2.icf file. Please make sure that the two files share the same values.
+ *
+ * These memory zones are defined in section 4.2 of ARM V2M-MPS2 RTL and
+ * Fast Model Reference Guide.
+ */
+
+#ifndef MEMORY_ZONES_H
+#define MEMORY_ZONES_H
+
+/*
+ * Code memory zones
+ * Please note that MPS2 on Fast Models do not simulate persistent flash memory.
+ * The FLASH memory zone is a 256 KiB SRAM block and named FLASH
+ * only to keep the same name than in the CMSDK RTL and Fast Models Reference
+ * Guide.
+ */
+#define FLASH_START      0x00000000
+#define FLASH_SIZE       0x00040000 /* 256 KiB */
+#define ZBT_SRAM1_START  0x00400000
+#define ZBT_SRAM1_SIZE   0x00400000 /* 4 MiB */
+
+/* Data memory zones */
+#define ZBT_SRAM2_START  0x20000000
+#define ZBT_SRAM2_SIZE   0x00800000 /* 8 MiB */
+
+#endif /* MEMORY_ZONES_H */
+

targets/TARGET_ARM_FM/TARGET_FVP_MPS2/objects.h

@@ -73,6 +73,11 @@ struct analogin_s {
     __IO uint32_t address;
 };
 
+/* This structure is not used by the HAL implementation. */
+struct flash_s {
+    uint8_t not_used;
+};
+
 #include "gpio_object.h"
 
 #ifdef __cplusplus

targets/targets.json

@@ -4239,7 +4239,7 @@
         "public": false,
         "supported_toolchains": ["GCC_ARM", "ARM", "IAR"],
         "OUTPUT_EXT": "elf",
-        "device_has": ["AACI", "ANALOGIN", "CLCD", "I2C", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "SERIAL", "SERIAL_FC", "SPI", "SPISLAVE", "TSC", "USTICKER"],
+        "device_has": ["AACI", "ANALOGIN", "CLCD", "FLASH", "I2C", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "SERIAL", "SERIAL_FC", "SPI", "SPISLAVE", "TSC", "USTICKER"],
         "release_versions": ["5"]
     },
     "FVP_MPS2_M0": {