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/*******************************************************************************
* (c) Copyright 2015 Microsemi SoC Products Group. All rights reserved.
*
* file name : debug-in-microsemi-smartfusion2-external-ram.ld
* SmartFusion2 Cortex-M3 linker script for creating a SoftConsole downloadable
* debug image executing in external eRAM.
*
* Some current (April 2015) dev kit memory map possibilities are
* --Type-------Device-----------address start---address end----size---Dbus--RAM IC-------SF2--Comment---------------
* --eNVM-------M2S010-----------0x60000000------0x6007FFFF-----256KB---------------------010------------------------
* --eNVM-------M2S090-----------0x60000000------0x6007FFFF-----512KB---------------------090------------------------
* --eSRAM------M2Sxxx-----------0x20000000------0x2000FFFF-----64KB----------------------xxx--All have same amount--
* --eSRAM------M2Sxxx-----------0x20000000------0x20013FFF-----80KB----------------------xxx--If ECC/SECDED not used
* --Fabric-----M2S010-----------0x30000000------0x6007FFFF-----400Kb---------------------010--note-K bits-----------
* --Fabric-----M2S090-----------0x30000000------0x6007FFFF-----2074Kb--------------------090--note-K bits-----------
* --LPDDR------STARTER-KIT------0xA0000000------0xA3FFFFFF-----64MB---16--MT46H32M16-----050------------------------
* --LPDDR------484-STARTER-KIT--0xA0000000------0xA3FFFFFF-----64MB---16--MT46H32M16-----010------------------------
* --LPDDR------SEC-EVAL-KIT-----0xA0000000------0xA3FFFFFF-----64MB---16--MT46H32M16LF---090--Security eval kit-----
* --DDR3-------ADevKit----------0xA0000000------0xBFFFFFFF-----1GB----32--MT41K256M8DA---150------------------------
* --Some older physical memory map possibilities are
* --Type-------location---------address start---address end----size---Dbus---RAM IC------SF2--Comment--------------
* --LPDDR------EVAL KIT---------0xA0000000------0xA3FFFFFF-----64MB-=-16--MT46H32M16LF---025--Eval Kit--------------
* --DDR3-------DevKit-----------0xA0000000------0xAFFFFFFF-----512MB--16--MT41K256M8DA---050------------------------
*
* Example linker scripts use lowest practical values so will work accross dev kits
* eNVM=256KB eRAM=64KB External memory = 64MB
*
* On reset, the eNVM region is mapped to 0x00000000
* This is changed below by setting the __smartfusion2_memory_remap variable as required.
* Options are detailed below.
*
* SVN $Revision: 7419 $
* SVN $Date: 2015-05-15 21:20:21 +0530 (Fri, 15 May 2015) $
*/
OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
GROUP(-lc -lgcc -lm)
OUTPUT_ARCH(arm)
ENTRY(Reset_Handler)
SEARCH_DIR(.)
__DYNAMIC = 0;
/*******************************************************************************
* Start of board customization.
*******************************************************************************/
MEMORY
{
/*
* In general, example LD scripts use lowest common memory footprint
* accross dev boards so will work with all devices. Currently this is 64MB
* Program and data space is split evenly in this example 32MB each
*/
/* SmartFusion2 internal eSRAM */
esram (rwx) : ORIGIN = 0x20000000, LENGTH = 64k
/* SmartFusion2 development board external RAM */
external_ram (rwx) : ORIGIN = 0x00000000, LENGTH = 32m
/* External MDDR RAM used for data section. */
/* Must be enough room allocated for data section between 0xA0000000 and data_external_ram */
data_external_ram (rw) : ORIGIN = 0xA2000000, LENGTH = 32m
}
ESRAM_START_ADDRESS = 0x20000000; /* Must be the same value MEMORY region ram ORIGIN above. */
ESRAM_SIZE = 64k; /* Must be the same value MEMORY region ram LENGTH above. */
MAIN_STACK_SIZE = 64k; /* Cortex main stack size. */
MIN_SIZE_HEAP = 64k; /* needs to be calculated for your application */
TOP_OF_MDDR = 0xA4000000; /* Top address of the external MDDR memory. */
/*******************************************************************************
* End of board customization.
*******************************************************************************/
/*PROVIDE (__main_ram_size = ESRAM_SIZE); */
PROVIDE (__main_stack_start = ESRAM_START_ADDRESS + ESRAM_SIZE);
PROVIDE (__process_stack_start = __main_stack_start - MAIN_STACK_SIZE);
PROVIDE (_estack = __main_stack_start);
PROVIDE (__mirrored_nvm = 0); /* Indicate to startup code that NVM is not mirrored to VMA address .text copy is required. */
/*
* Remap instruction for startup code and debugger.
* set __smartfusion2_memory_remap to one of the following:
* 0: remap eNVM to address 0x00000000 Production mode or debugging from eNVM
* 1: remap eSRAM to address 0x00000000 Debugging from eSRAM
* 2: remap external DDR memory to address 0x00000000 Debugging from DDR memory
*/
PROVIDE (__smartfusion2_memory_remap = 2);
SECTIONS
{
.vector_table : ALIGN(0x10)
{
__vector_table_load = LOADADDR(.vector_table);
__vector_table_start = .;
__vector_table_vma_base_address = .; /* required by debugger for start address */
KEEP(*(.isr_vector))
. = ALIGN(0x10);
_evector_table = .;
} >external_ram
.text : ALIGN(0x10)
{
CREATE_OBJECT_SYMBOLS
__text_load = LOADADDR(.text);
__text_start = .;
*(.text .text.* .gnu.linkonce.t.*)
*(.plt)
*(.gnu.warning)
*(.glue_7t) *(.glue_7) *(.vfp11_veneer)
. = ALIGN(0x4);
/* These are for running static constructors and destructors under ELF. */
KEEP (*crtbegin.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*crtend.o(.ctors))
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*crtend.o(.dtors))
*(.rodata .rodata.* .gnu.linkonce.r.*)
*(.ARM.extab* .gnu.linkonce.armextab.*)
*(.gcc_except_table)
*(.eh_frame_hdr)
*(.eh_frame)
KEEP (*(.vector_table))
KEEP (*(.init))
KEEP (*(.fini))
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array))
PROVIDE_HIDDEN (__preinit_array_end = .);
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
PROVIDE_HIDDEN (__init_array_end = .);
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
PROVIDE_HIDDEN (__fini_array_end = .);
. = ALIGN(0x10);
} >external_ram
/* .ARM.exidx is sorted, so has to go in its own output section. */
__exidx_start = .;
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} >external_ram
__exidx_end = .;
_etext = .;
PROVIDE(__text_end = .);
.data : ALIGN(0x10)
{
__data_load = LOADADDR (.data);
_sidata = LOADADDR (.data);
__data_start = .;
_sdata = .;
KEEP(*(.jcr))
*(.got.plt) *(.got)
*(.shdata)
*(.data .data.* .gnu.linkonce.d.*)
. = ALIGN(0x10);
_edata = .;
} >data_external_ram
.bss : ALIGN(0x10)
{
__bss_start__ = . ;
_sbss = .;
*(.shbss)
*(.bss .bss.* .gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(0x10);
__bss_end__ = .;
_end = .;
__end = _end;
_ebss = .;
PROVIDE(end = .);
} >data_external_ram
.heap : ALIGN(0x10)
{
__heap_start__ = .;
. += MIN_SIZE_HEAP; /* will generate error if this minimum size not available */
. += (ABSOLUTE(TOP_OF_MDDR) - . );
. = ALIGN(0x10);
_eheap = .;
} >data_external_ram
.stack : ALIGN(0x10)
{
__stack_start__ = .;
. += MAIN_STACK_SIZE;
. = ALIGN(0x10);
_estack = .;
} >esram
.stab 0 (NOLOAD) :
{
*(.stab)
}
.stabstr 0 (NOLOAD) :
{
*(.stabstr)
}
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) }
/DISCARD/ : { *(.note.GNU-stack) *(.isr_vector) }
}
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