102 lines
4.0 KiB
Plaintext
102 lines
4.0 KiB
Plaintext
/****************************************************************************
|
|
* boards/risc-v/esp32c3-legacy/common/scripts/protected_memory.ld
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* ESP32-C3 Linker Script Memory Layout for Protected Mode
|
|
*
|
|
* This file describes the memory layout (memory blocks) as virtual
|
|
* memory addresses.
|
|
*
|
|
* kernel-space.ld and user-space.ld contain output sections to link compiler
|
|
* output into these memory blocks for the Kernel and User images,
|
|
* respectively.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include "esp32c3_aliases.ld"
|
|
|
|
#define SRAM_IRAM_START 0x4037c000
|
|
#define SRAM_DRAM_START 0x3fc7c000
|
|
|
|
/* ICache size is fixed to 16KB on ESP32-C3 */
|
|
|
|
#define ICACHE_SIZE 0x4000
|
|
#define I_D_SRAM_OFFSET (SRAM_IRAM_START - SRAM_DRAM_START)
|
|
|
|
/* 2nd stage bootloader iram_loader_seg start address */
|
|
|
|
#define SRAM_IRAM_END 0x403d0000
|
|
#define SRAM_DRAM_END SRAM_IRAM_END - I_D_SRAM_OFFSET
|
|
|
|
#define SRAM_IRAM_ORG (SRAM_IRAM_START + ICACHE_SIZE)
|
|
#define SRAM_DRAM_ORG (SRAM_DRAM_START + ICACHE_SIZE)
|
|
|
|
#define I_D_SRAM_SIZE SRAM_DRAM_END - SRAM_DRAM_ORG
|
|
|
|
MEMORY
|
|
{
|
|
metadata (RX) : org = 0x0, len = 0x18
|
|
ROM (RX) : org = ORIGIN(metadata) + LENGTH(metadata),
|
|
len = 0x100000 - ORIGIN(ROM)
|
|
|
|
/* Below values assume the flash cache is on, and have the blocks this
|
|
* uses subtracted from the length of the various regions. The 'data access
|
|
* port' dram/drom regions map to the same iram/irom regions but are
|
|
* connected to the data port of the CPU and e.g. allow bytewise access.
|
|
*/
|
|
|
|
KIRAM (RWX) : org = SRAM_IRAM_ORG, len = 64K
|
|
UIRAM (RWX) : org = SRAM_IRAM_ORG + 64K, len = 256K
|
|
|
|
/* Flash mapped instruction data. */
|
|
|
|
/* The 0x20 offset for the KIROM region is a convenience for the Kernel
|
|
* binary image generation in Espressif Application Image format.
|
|
* Flash cache has 64KB pages. The .bin file which is flashed to the chip
|
|
* has a 0x18 byte file header, and each segment has a 0x08 byte segment
|
|
* header. Setting this offset makes it simple to meet the flash cache MMU's
|
|
* constraint that (paddr % 64KB == vaddr % 64KB).
|
|
*/
|
|
|
|
KIROM (RX) : org = 0x42000020, len = 0x80000 - 0x20
|
|
UIROM (RX) : org = 0x42080000, len = 0x180000
|
|
|
|
/* Shared data RAM, excluding memory reserved for ROM bss/data/stack. */
|
|
|
|
KDRAM (RW) : org = SRAM_DRAM_ORG, len = 64K
|
|
UDRAM (RW) : org = SRAM_DRAM_ORG + 64K, len = 256K
|
|
|
|
/* Flash mapped constant data */
|
|
|
|
/* See KIROM region documentation above for the meaning of the 0x20 offset.
|
|
*
|
|
* The 0x18 offset for the UDROM region is a convenience for the User
|
|
* binary image generation following a custom image format, which defines
|
|
* a "metadata" output section containing some information that the Kernel
|
|
* needs for properly configuring the External Flash MMU when loading the
|
|
* User application image.
|
|
*/
|
|
|
|
KDROM (R) : org = 0x3c000020, len = 0x80000 - 0x20
|
|
UDROM (R) : org = 0x3c080018, len = 0x180000 - ORIGIN(ROM)
|
|
}
|