Import Mbed OS hard-float snapshot

targets/TARGET_Samsung/TARGET_SIDK_S1SBP6A/flash_api.c

@@ -0,0 +1,115 @@
+/****************************************************************************
+ *
+ * Copyright 2020 Samsung Electronics All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#if DEVICE_FLASH
+#include "flash_api.h"
+#include "mbed_critical.h"
+#include "cmsis.h"
+
+#define BP6A_FLASH_WRITE_SIZE        4
+#define BP6A_FLASH_PAGE_SIZE         2048
+#define BP6A_FLASH_MEM_BASE          0
+#define BP6A_FLASH_FULL_SIZE         (2*1024*1024)
+
+
+int32_t flash_init(flash_t *obj)
+{
+    modifyreg32(BP_FLASH_CTRL_BASE + UFC_DCYCRDCON_OFFSET, 0xFFFF, 0x9F4); // flash wait setting
+    return 0;
+}
+
+
+int32_t flash_free(flash_t *obj)
+{
+    return 0;
+}
+
+int32_t flash_erase_sector(flash_t *obj, uint32_t address)
+{
+    modifyreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET,
+                UFC_FRWCON_WRMD_MASK |
+                UFC_FRWCON_ERSMD_MASK,
+                UFC_FRWCON_WRMD(ERASE_MODE) |
+                UFC_FRWCON_ERSMD(SECTOR_ERASE_MODE));
+
+    putreg32(address, 0xFFFFFFFF); //load dummy
+
+    modifyreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET,
+                UFC_FRWCON_HVEN_MASK,
+                UFC_FRWCON_HVEN(1));
+
+    while (getreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET) & (0x01 << UFC_FRWCON_HVEN_SHIFT));
+
+    return 0;
+
+
+}
+
+int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size)
+{
+    uint32_t i;
+
+    for (i = 0; i < size; i += 4) {
+        modifyreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET,
+                    UFC_FRWCON_WRMD_MASK,
+                    UFC_FRWCON_WRMD(WRITE_MODE));
+        *((uint32_t *)(address + i)) = (uint32_t)(data[i] | data[i + 1] << 8 |
+                                                  data[i + 3] << 24 | data[i + 2] << 16);
+        modifyreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET,
+                    UFC_FRWCON_HVEN_MASK,
+                    UFC_FRWCON_HVEN(1));
+        while (getreg32(BP_FLASH_CTRL_BASE + UFC_FRWCON0_OFFSET) & (0x01 << UFC_FRWCON_HVEN_SHIFT));
+    }
+    return 0;
+}
+
+
+uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
+{
+    /*  1 sector = 1 page */
+    if (address >= (BP6A_FLASH_MEM_BASE + BP6A_FLASH_FULL_SIZE)) {
+        return MBED_FLASH_INVALID_SIZE;
+    } else {
+        return BP6A_FLASH_PAGE_SIZE;
+    }
+}
+
+uint32_t flash_get_page_size(const flash_t *obj)
+{
+    return BP6A_FLASH_WRITE_SIZE;
+}
+
+uint32_t flash_get_start_address(const flash_t *obj)
+{
+    return BP6A_FLASH_MEM_BASE;
+}
+
+uint32_t flash_get_size(const flash_t *obj)
+{
+    return BP6A_FLASH_FULL_SIZE;
+}
+
+uint8_t flash_get_erase_value(const flash_t *obj)
+{
+    UNUSED(obj);
+
+    return 0xFF;
+}
+
+#endif