/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2023 Alessandro Gatti
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

/* Output format is 32 bits little endian. */
OUTPUT_FORMAT("elf32-littleriscv", "elf32-littleriscv", "elf32-littleriscv");

/*
 * Memory layout:
 *
 * 0x8000_0000: .text
 *   .........: .rodata
 * 0x8040_0000: .data
 *   .........: _global_pointer
 *   .........: .bss
 * 0x8060_0000: .stack
 * 0x8060_0000: _sstack
 * 0x8060_FFFF: _estack
 */
MEMORY
{
	ROM   (xr)  : ORIGIN = 0x80000000,                LENGTH = 4M
	RAM   (xrw) : ORIGIN = ORIGIN(ROM) + LENGTH(ROM), LENGTH = 2M
	STACK (rw)  : ORIGIN = ORIGIN(RAM) + LENGTH(RAM), LENGTH = 64K 
}

SECTIONS
{
	/* Code + Read-Only data segment */

	.text : ALIGN (4K)
	{
		*(.start)
		*(.text)
		. = ALIGN (4K);
		*(.rodata)
		_sirodata = .;
	} > ROM

	.rodata : AT (_sirodata) ALIGN (4K)
	{
		*(.rodata)
	} > ROM

	/* Data + BSS segment */

	.data : ALIGN (4K)
	{
		*(.data)
		_sibss = .;
	} > RAM

	.bss : AT (_sibss) ALIGN (4K)
	{
		/* Mark global pointer address. */
		_global_pointer = .;

		/* Mark BSS start. */
		. = . + 4;
		_sbss = .;
		*(.bss)
		/* Mark BSS end. */
		_ebss = .;
	} > RAM

	/* Isolated stack segment. */

	.stack : ALIGN(4K)
	{
		/* Mark stack start. */
		_sstack = .;
		. = LENGTH(STACK);
		/* Mark stack end. */
		_estack = .;
	} > STACK
}