boards/risc-v/qemu-rv/rv-virt/scripts/ld-protected.mem

/****************************************************************************
 * boards/risc-v/qemu-rv/rv-virt/scripts/ld-protected.mem
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you 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 <nuttx/config.h>

/* Memory layout for ld-protected.script and ld-userland.script
 *
 * |-CONFIG_RAM_START
 * |        |-CONFIG_NUTTX_USERSPACE
 * +--------+----------+--------+--------+
 * | kflash | uflash   | ksram  | usram  |
 * +--------+----------+--------+--------+
 * |>-- FLASH_SIZE ---<|>-- SRAM_SIZE --<|
 *
 */

#define KFLASH_ADDR   (CONFIG_RAM_START)
#define UFLASH_ADDR   (CONFIG_NUTTX_USERSPACE)
#define KFLASH_SIZE   (UFLASH_ADDR - KFLASH_ADDR)
#define UFLASH_SIZE   (KFLASH_SIZE)

#define FLASH_SIZE    (0x100000)   /* needs be POT */
#define SRAM_SIZE     (0x200000)   /* needs be POT */

#if KFLASH_SIZE < 0
#error "Invalid KFLASH_SIZE!"
#endif

#if KFLASH_SIZE + UFLASH_SIZE > FLASH_SIZE
#error "Adjust FLASH_SIZE please!"
#endif

#if CONFIG_RAM_SIZE < FLASH_SIZE + SRAM_SIZE
#error "CONFIG_RAM_SIZE too small?"
#endif

#define KSRAM_SIZE    (SRAM_SIZE / 2)
#define USRAM_SIZE    (SRAM_SIZE - KSRAM_SIZE)

#define KSRAM_ADDR    (KFLASH_ADDR + FLASH_SIZE)
#define USRAM_ADDR    (KSRAM_ADDR + KSRAM_SIZE)

MEMORY
{
  kflash (rx)  : ORIGIN = KFLASH_ADDR, LENGTH = KFLASH_SIZE
  uflash (rx)  : ORIGIN = UFLASH_ADDR, LENGTH = UFLASH_SIZE
  ksram (rwx)  : ORIGIN = KSRAM_ADDR, LENGTH = KSRAM_SIZE
  usram (rwx)  : ORIGIN = USRAM_ADDR, LENGTH = USRAM_SIZE
}