/*
 * Copyright (c) 2014-2015 Wind River Systems, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/**
 * @brief Common parts of the linker scripts for the ARCv2/EM targets.
 */

#define _LINKER
#define _ASMLANGUAGE

#include <autoconf.h>
#include <sections.h>

#if defined(CONFIG_NSIM)
	EXTERN(_VectorTable)
#endif

#include <linker-defs.h>
#include <linker-tool.h>

/* physical address of RAM */
#ifdef CONFIG_HARVARD
	#define ROMABLE_REGION ICCM
	#define RAMABLE_REGION DCCM
#else
	#if defined(CONFIG_XIP) && (FLASH_SIZE != 0)
		#define ROMABLE_REGION FLASH
		#define RAMABLE_REGION SRAM
	#else
		#define ROMABLE_REGION SRAM
		#define RAMABLE_REGION SRAM
	#endif
#endif

#if defined(CONFIG_XIP)
	#define _DATA_IN_ROM __data_rom_start
#else
	#define _DATA_IN_ROM
#endif

OUTPUT_ARCH(arc)
ENTRY(__start)

MEMORY {
#ifdef FLASH_START
	FLASH (rx)  : ORIGIN = FLASH_START, LENGTH = FLASH_SIZE*1k
#endif
#ifdef ICCM_START
	ICCM  (rwx)  : ORIGIN = ICCM_START,  LENGTH = ICCM_SIZE*1k
#endif
#ifdef SRAM_START
	SRAM  (rwx) : ORIGIN = SRAM_START,  LENGTH = SRAM_SIZE*1k
#endif
#ifdef DCCM_START
	DCCM  (rw)  : ORIGIN = DCCM_START,  LENGTH = DCCM_SIZE*1k
#endif
	/* Used by and documented in include/linker/intlist.ld */
	IDT_LIST  (wx)      : ORIGIN = 0xFFFFF7FF, LENGTH = 2K
}

SECTIONS {
	GROUP_START(ROMABLE_REGION)

	SECTION_PROLOGUE(_TEXT_SECTION_NAME,,ALIGN(1024)) {
		_image_rom_start = .;
		_image_text_start = .;

/* when !XIP, .text is in RAM, and vector table must be at its very start */

		KEEP(*(.exc_vector_table))
		KEEP(*(".exc_vector_table.*"))
		KEEP(*(IRQ_VECTOR_TABLE))

#ifdef CONFIG_GEN_SW_ISR_TABLE
		KEEP(*(SW_ISR_TABLE))
#endif
		*(.text)
		*(".text.*")
		*(.gnu.linkonce.t.*)

		_image_text_end = .;
	} GROUP_LINK_IN(ROMABLE_REGION)

#include <linker/common-rom.ld>

	SECTION_PROLOGUE(_RODATA_SECTION_NAME,,) {
		KEEP(*(.openocd_dbg))
		KEEP(*(".openocd_dbg.*"))
		*(.rodata)
		*(".rodata.*")
		*(.gnu.linkonce.r.*)

#ifdef CONFIG_CUSTOM_RODATA_LD
/* Located in project source directory */
#include <custom-rodata.ld>
#endif

	} GROUP_LINK_IN(ROMABLE_REGION)

	_image_rom_end = .;
	__data_rom_start = ALIGN(4);	/* XIP imaged DATA ROM start addr */

	GROUP_END(ROMABLE_REGION)

	GROUP_START(RAMABLE_REGION)

	SECTION_DATA_PROLOGUE(_DATA_SECTION_NAME,,) {

/* when XIP, .text is in ROM, but vector table must be at start of .data */

		_image_ram_start = .;
		__data_ram_start = .;
		*(.data)
		*(".data.*")

#ifdef CONFIG_CUSTOM_RWDATA_LD
/* Located in project source directory */
#include <custom-rwdata.ld>
#endif

	} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)

#include <linker/common-ram.ld>

	__data_ram_end = .;

	SECTION_DATA_PROLOGUE(_BSS_SECTION_NAME,(NOLOAD),) {
		/*
		 * For performance, BSS section is assumed to be 4 byte aligned and
		 * a multiple of 4 bytes
		 */
		. = ALIGN(4);
		__bss_start = .;
		*(.bss)
		*(".bss.*")
		COMMON_SYMBOLS
		/*
		 * BSP clears this memory in words only and doesn't clear any
		 * potential left over bytes.
		 */
		__bss_end = ALIGN(4);
	} GROUP_DATA_LINK_IN(RAMABLE_REGION, RAMABLE_REGION)

	SECTION_PROLOGUE(_NOINIT_SECTION_NAME,(NOLOAD),) {
		/*
		 * This section is used for non-initialized objects that
		 * will not be cleared during the boot process.
		 */
		*(.noinit)
		*(".noinit.*")

	} GROUP_LINK_IN(RAMABLE_REGION)

	/* Define linker symbols */
	_image_ram_end = .;
	_end = .; /* end of image */

	GROUP_END(RAMABLE_REGION)

	/* Data Closely Coupled Memory (DCCM) */
	GROUP_START(DCCM)
	GROUP_END(DCCM)

	SECTION_PROLOGUE(initlevel_error, (OPTIONAL),)
	{
		DEVICE_INIT_UNDEFINED_SECTION()
	}
	ASSERT(SIZEOF(initlevel_error) == 0, "Undefined initialization levels used.")

#ifdef CONFIG_CUSTOM_SECTIONS_LD
/* Located in project source directory */
#include <custom-sections.ld>
#endif

#ifdef CONFIG_GEN_ISR_TABLES
#include <linker/intlist.ld>
#endif
	}