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configs/metro-m4: Add an option to build the Metro M4 image to run ou…
…t of SRAM. This ought to be a safer and quicker way to do the initial bring-up (having bricked the first Metro M4 due to a bad FLASH image).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| /**************************************************************************** | ||
| * configs/metro-m4/scripts/sram.ld | ||
| * | ||
| * Copyright (C) 2018 Gregory Nutt. All rights reserved. | ||
| * Author: Gregory Nutt <gnutt@nuttx.org> | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * | ||
| * 1. Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * 2. Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in | ||
| * the documentation and/or other materials provided with the | ||
| * distribution. | ||
| * 3. Neither the name NuttX nor the names of its contributors may be | ||
| * used to endorse or promote products derived from this software | ||
| * without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | ||
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | ||
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | ||
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | ||
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | ||
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | ||
| * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| * POSSIBILITY OF SUCH DAMAGE. | ||
| * | ||
| ****************************************************************************/ | ||
|
|
||
| /* The ATSAMD51J19 has 512Kb of FLASH beginning at address 0x0000:0000 and | ||
| * 192Kb of SRAM at address 0x2000:0000. Only sram is used by this linker | ||
| * script. | ||
| */ | ||
|
|
||
| MEMORY | ||
| { | ||
| flash (rx) : ORIGIN = 0x00000000, LENGTH = 512K | ||
| sram (rwx) : ORIGIN = 0x20000000, LENGTH = 192K | ||
| } | ||
|
|
||
| OUTPUT_ARCH(arm) | ||
| ENTRY(_stext) | ||
| EXTERN(_vectors) | ||
| SECTIONS | ||
| { | ||
| .text : | ||
| { | ||
| _stext = ABSOLUTE(.); | ||
| *(.vectors) | ||
| *(.text .text.*) | ||
| *(.fixup) | ||
| *(.gnu.warning) | ||
| *(.rodata .rodata.*) | ||
| *(.gnu.linkonce.t.*) | ||
| *(.glue_7) | ||
| *(.glue_7t) | ||
| *(.got) | ||
| *(.gcc_except_table) | ||
| *(.gnu.linkonce.r.*) | ||
| _etext = ABSOLUTE(.); | ||
| } > sram | ||
|
|
||
| .init_section : | ||
| { | ||
| _sinit = ABSOLUTE(.); | ||
| *(.init_array .init_array.*) | ||
| _einit = ABSOLUTE(.); | ||
| } > sram | ||
|
|
||
| .ARM.extab : | ||
| { | ||
| *(.ARM.extab*) | ||
| } > sram | ||
|
|
||
| __exidx_start = ABSOLUTE(.); | ||
| .ARM.exidx : | ||
| { | ||
| *(.ARM.exidx*) | ||
| } > sram | ||
| __exidx_end = ABSOLUTE(.); | ||
|
|
||
| .data : | ||
| { | ||
| _sdata = ABSOLUTE(.); | ||
| *(.data .data.*) | ||
| *(.gnu.linkonce.d.*) | ||
| CONSTRUCTORS | ||
| _edata = ABSOLUTE(.); | ||
| } > sram | ||
|
|
||
| .bss : | ||
| { | ||
| _sbss = ABSOLUTE(.); | ||
| *(.bss .bss.*) | ||
| *(.gnu.linkonce.b.*) | ||
| *(COMMON) | ||
| _ebss = ABSOLUTE(.); | ||
| } > sram | ||
|
|
||
| /* Stabs debugging sections. */ | ||
|
|
||
| .stab 0 : { *(.stab) } | ||
| .stabstr 0 : { *(.stabstr) } | ||
| .stab.excl 0 : { *(.stab.excl) } | ||
| .stab.exclstr 0 : { *(.stab.exclstr) } | ||
| .stab.index 0 : { *(.stab.index) } | ||
| .stab.indexstr 0 : { *(.stab.indexstr) } | ||
| .comment 0 : { *(.comment) } | ||
| .debug_abbrev 0 : { *(.debug_abbrev) } | ||
| .debug_info 0 : { *(.debug_info) } | ||
| .debug_line 0 : { *(.debug_line) } | ||
| .debug_pubnames 0 : { *(.debug_pubnames) } | ||
| .debug_aranges 0 : { *(.debug_aranges) } | ||
| } |