pinebuds/scripts/link/rom.lds.S

305 lines
6.9 KiB
ArmAsm
Raw Normal View History

2022-08-15 04:20:27 -05:00
/***************************************************************************
*
* Copyright 2015-2019 BES.
* All rights reserved. All unpublished rights reserved.
*
* No part of this work may be used or reproduced in any form or by any
* means, or stored in a database or retrieval system, without prior written
* permission of BES.
*
* Use of this work is governed by a license granted by BES.
* This work contains confidential and proprietary information of
* BES. which is protected by copyright, trade secret,
* trademark and other intellectual property rights.
*
****************************************************************************/
#include "plat_addr_map.h"
#define HEAP_SECTION_SIZE 0x40
#define STACK_SECTION_SIZE 0x1000
#define CP_STACK_SECTION_SIZE 0x1000
/* Linker script to configure memory regions. */
MEMORY
{
ROM (rx) : ORIGIN = ROM_BASE, LENGTH = ROM_SIZE /* see plat_addr_map.h and common.mk */
RAM (rwx) : ORIGIN = RAM_BASE, LENGTH = RAM_SIZE
RAMX (rwx) : ORIGIN = RAMX_BASE, LENGTH = RAM_SIZE
#if defined(CHIP_HAS_CP) && (RAMCP_SIZE > 0)
RAMCP (rwx) : ORIGIN = RAMCP_BASE, LENGTH = RAMCP_SIZE
RAMCPX (rwx) : ORIGIN = RAMCPX_BASE, LENGTH = RAMCPX_SIZE
#endif
}
/* Library configurations */
GROUP(libgcc.a)
/* Linker script to place sections and symbol values. Should be used together
* with other linker script that defines memory regions ROM and RAM.
* It references following symbols, which must be defined in code:
* Reset_Handler : Entry of reset handler
*
* It defines following symbols, which code can use without definition:
* __export_fn_rom
* __exidx_start
* __exidx_end
* __rom_etext
* __rom_data_start__
* __rom_data_end__
* __rom_bss_start__
* __rom_bss_end__
* __rom_HeapLimit
* __rom_StackLimit
* __rom_StackTop
* __rom_stack
* __Vectors_End
* __Vectors_Size
* __free_rom_ram
* __rom_end
* __free_rom
* __audio_const_rom_start
* __audio_const_rom_end
* __audio_const_rom_size
*/
ENTRY(Reset_Handler)
SECTIONS
{
.rom_text (ORIGIN(ROM)) :
{
KEEP(*(.vectors))
*(.text*)
#ifndef NOSTD
KEEP(*(.init))
KEEP(*(.fini))
/* .ctors */
*crtbegin.o(.ctors)
*crtbegin?.o(.ctors)
*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
*(SORT(.ctors.*))
*(.ctors)
/* .dtors */
*crtbegin.o(.dtors)
*crtbegin?.o(.dtors)
*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
*(SORT(.dtors.*))
*(.dtors)
#endif
. = ALIGN(4);
*(.rodata*)
#ifdef CHIP_HAS_AUDIO_CONST_ROM
__audio_const_rom_start = .;
KEEP(*audio_const_rom.o(.audio_const_index))
KEEP(*audio_const_rom.o(.rodata*))
__audio_const_rom_end = .;
__audio_const_rom_size = __audio_const_rom_end - __audio_const_rom_start;
#endif
#ifndef NOSTD
KEEP(*(.eh_frame*))
#endif
*(.note.gnu.build-id)
. = ALIGN(4);
} > ROM
.rom_got_info (.) :
{
__rom_got_info_start = .;
__rom_got_start = .;
*(.got)
. = ALIGN(4);
__rom_got_end = .;
__rom_got_plt_start = .;
*(.got.plt)
. = ALIGN(4);
__rom_igot_plt_start = .;
*(.igot.plt)
. = ALIGN(4);
__rom_dynamic_start = .;
*(.dynamic)
. = ALIGN(4);
__rom_got_info_end = .;
} > ROM
.ARM.extab (.) :
{
*(.ARM.extab* .gnu.linkonce.armextab.*)
} > ROM
__exidx_start = .;
.ARM.exidx (.) :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > ROM
__exidx_end = .;
. = ALIGN(4);
__rom_text0_end = .;
.vector_table (ORIGIN(RAM)) (NOLOAD) :
{
KEEP(*(.vector_table))
. = VECTOR_SECTION_SIZE;
. = ALIGN(4);
} > RAM
.reboot_param (.) (NOLOAD) :
{
KEEP(*(.reboot_param))
. = REBOOT_PARAM_SECTION_SIZE;
. = ALIGN(4);
} > RAM
.rom_ramx (RAM_TO_RAMX(.)) : AT (__rom_text0_end)
{
__rom_ramx_start = .;
*(.rom_ramx)
. = ALIGN(4);
__rom_ramx_end = .;
} > RAMX
__rom_etext = __rom_text0_end + SIZEOF(.rom_ramx);
.rom_data (RAMX_TO_RAM(.)) : AT (__rom_etext)
{
__rom_data_start__ = .;
*(.data*)
. = ALIGN(4);
#ifndef NOSTD
*(vtable)
. = ALIGN(4);
/* preinit data */
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP(*(.preinit_array))
PROVIDE_HIDDEN (__preinit_array_end = .);
. = ALIGN(4);
/* init data */
PROVIDE_HIDDEN (__init_array_start = .);
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array))
PROVIDE_HIDDEN (__init_array_end = .);
. = ALIGN(4);
/* finit data */
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP(*(SORT(.fini_array.*)))
KEEP(*(.fini_array))
PROVIDE_HIDDEN (__fini_array_end = .);
KEEP(*(.jcr*))
. = ALIGN(4);
#endif
/* All data end */
__rom_data_end__ = .;
} > RAM
.rom_bss (.) (NOLOAD) : AT (ADDR(.rom_bss))
{
. = ALIGN(4);
__rom_bss_start__ = .;
*(.bss*)
*(COMMON)
. = ALIGN(4);
__rom_bss_end__ = .;
#ifndef NOSTD
__bss_start__ = __rom_bss_start__;
__bss_end__ = __rom_bss_end__;
#endif
} > RAM
.rom_heap (.) (NOLOAD) :
{
. = ALIGN(8);
__rom_HeapBase = .;
#ifndef NOSTD
__end__ = .;
end = __end__;
. += HEAP_SECTION_SIZE;
#endif
. = ALIGN(8);
__rom_HeapLimit = .;
} > RAM
.scratch_buf (.) (NOLOAD) :
{
. = ALIGN(4);
*(.scratch_buf)
. = ALIGN(4);
} > RAM
/* .stack_dummy section doesn't contains any symbols. It is only
* used for linker to calculate size of stack sections, and assign
* values to stack symbols later */
.rom_stack_dummy (.) (COPY) :
{
. = STACK_SECTION_SIZE;
. = ALIGN(8);
} > RAM
/* Set stack top to end of RAM, and stack limit move down by
* size of stack_dummy section */
__rom_StackTop = ORIGIN(RAM) + LENGTH(RAM);
__rom_StackLimit = __rom_StackTop - SIZEOF(.rom_stack_dummy);
PROVIDE(__rom_stack = __rom_StackTop);
#ifndef NOSTD
__StackTop = __rom_StackTop;
PROVIDE(__stack = __rom_StackTop);
#endif
/* Check if data + heap + stack exceeds RAM limit */
ASSERT(__rom_StackLimit >= __rom_HeapLimit, "region RAM overflowed with stack")
__free_rom_ram = __rom_StackLimit - __rom_HeapLimit;
__rom_end = __rom_etext + SIZEOF(.rom_data);
#if defined(CHIP_HAS_CP) && (RAMCP_SIZE > 0)
.cp_ramx_last_dummy (NOLOAD) :
{
__cp_ramx_last_dummy_start = .;
} > RAMCPX
.cp_ram_last_dummy (NOLOAD) :
{
. = ALIGN(8);
__cp_ram_last_dummy_start = .;
} > RAMCP
__cp_stack_top = ORIGIN(RAMCP) + LENGTH(RAMCP);
__cp_stack_limit = __cp_stack_top - CP_STACK_SECTION_SIZE;
__free_ramcpx = ORIGIN(RAMCPX) + LENGTH(RAMCPX) - __cp_ramx_last_dummy_start;
ASSERT(__cp_stack_limit >= __cp_ram_last_dummy_start, "region RAMCP overflowed with stack")
__free_ramcp = __cp_stack_limit - __cp_ram_last_dummy_start;
#endif
.rom_export_fn (ORIGIN(ROM) + LENGTH(ROM) - ROM_BUILD_INFO_SECTION_SIZE - ROM_EXPORT_FN_SECTION_SIZE) :
{
__export_fn_rom = .;
KEEP(*(.export_fn))
. = ROM_EXPORT_FN_SECTION_SIZE;
} > ROM = 0x00000000
.rom_build_info (ORIGIN(ROM) + LENGTH(ROM) - ROM_BUILD_INFO_SECTION_SIZE) :
{
KEEP(*(.build_info))
. = ROM_BUILD_INFO_SECTION_SIZE;
} > ROM = 0x00000000
ASSERT(ADDR(.rom_export_fn) >= __rom_end, "region ROM overflowed with .rom_export_fn")
__free_rom = ADDR(.rom_export_fn) - __rom_end;
}