<p>tsaitgaist has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/c/osmo-asf4-dfu/+/16849">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">restrict flash and SRAM size in linker script<br><br>since the bootloader should not exceed 16 kB, the linker script now<br>limits the rom section to 16 kB.<br>this will prevent generating larger bootloader images, which could<br>overlap with the application starting at 16 kB.<br><br>the SRAM size has also been reduce to 192 kB.<br>this is the least amount SAME54 micro-controllers have.<br><br>Change-Id: I5641adf1363346acb5f50fbaef0083508d5bfee8<br>---<br>M gcc/Makefile<br>R gcc/gcc/same54_flash.ld<br>D gcc/gcc/same54p20a_sram.ld<br>3 files changed, 6 insertions(+), 167 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmo-asf4-dfu refs/changes/49/16849/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/gcc/Makefile b/gcc/Makefile</span><br><span>index 3493102..ccf2af3 100644</span><br><span>--- a/gcc/Makefile</span><br><span>+++ b/gcc/Makefile</span><br><span>@@ -190,7 +190,7 @@</span><br><span> $(QUOTE)arm-none-eabi-gcc$(QUOTE) -o $(OUTPUT_FILE_NAME).elf $(OBJS_AS_ARGS) -Wl,--start-group -lm -Wl,--end-group -mthumb \</span><br><span> -Wl,-Map="$(OUTPUT_FILE_NAME).map" --specs=nano.specs -Wl,--gc-sections -mcpu=cortex-m4 \</span><br><span> \</span><br><span style="color: hsl(0, 100%, 40%);">--T"../gcc/gcc/same54p20a_flash.ld" \</span><br><span style="color: hsl(120, 100%, 40%);">+-T"../gcc/gcc/same54_flash.ld" \</span><br><span> -L"../gcc/gcc"</span><br><span> @echo Finished building target: $@</span><br><span> </span><br><span>diff --git a/gcc/gcc/same54p20a_flash.ld b/gcc/gcc/same54_flash.ld</span><br><span>similarity index 91%</span><br><span>rename from gcc/gcc/same54p20a_flash.ld</span><br><span>rename to gcc/gcc/same54_flash.ld</span><br><span>index 6aa3fb1..f005197 100644</span><br><span>--- a/gcc/gcc/same54p20a_flash.ld</span><br><span>+++ b/gcc/gcc/same54_flash.ld</span><br><span>@@ -1,7 +1,7 @@</span><br><span> /**</span><br><span> * \file</span><br><span> *</span><br><span style="color: hsl(0, 100%, 40%);">- * \brief Linker script for running in internal FLASH on the SAME54P20A</span><br><span style="color: hsl(120, 100%, 40%);">+ * \brief Linker script for running in internal FLASH on SAME54 devices</span><br><span> *</span><br><span> * Copyright (c) 2018 Microchip Technology Inc.</span><br><span> *</span><br><span>@@ -35,9 +35,10 @@</span><br><span> /* Memory Spaces Definitions */</span><br><span> MEMORY</span><br><span> {</span><br><span style="color: hsl(0, 100%, 40%);">- rom (rx) : ORIGIN = 0x00000000, LENGTH = 0x00100000</span><br><span style="color: hsl(0, 100%, 40%);">- /* The first word of the RAM is used for the DFU magic */</span><br><span style="color: hsl(0, 100%, 40%);">- ram (rwx) : ORIGIN = 0x20000000 + 4, LENGTH = 0x00040000 - 4</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Limit flash for bootloader to first 16 kB */</span><br><span style="color: hsl(120, 100%, 40%);">+ rom (rx) : ORIGIN = 0x00000000, LENGTH = 16K</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Least amount of SRAM for SAME54 micro-controller is 182 kB. The first word of the RAM is used for the DFU magic */</span><br><span style="color: hsl(120, 100%, 40%);">+ ram (rwx) : ORIGIN = 0x20000000 + 4, LENGTH = 192K - 4</span><br><span> bkupram (rwx) : ORIGIN = 0x47000000, LENGTH = 0x00002000</span><br><span> qspi (rwx) : ORIGIN = 0x04000000, LENGTH = 0x01000000</span><br><span> }</span><br><span>diff --git a/gcc/gcc/same54p20a_sram.ld b/gcc/gcc/same54p20a_sram.ld</span><br><span>deleted file mode 100644</span><br><span>index b3be5b3..0000000</span><br><span>--- a/gcc/gcc/same54p20a_sram.ld</span><br><span>+++ /dev/null</span><br><span>@@ -1,162 +0,0 @@</span><br><span style="color: hsl(0, 100%, 40%);">-/**</span><br><span style="color: hsl(0, 100%, 40%);">- * \file</span><br><span style="color: hsl(0, 100%, 40%);">- *</span><br><span style="color: hsl(0, 100%, 40%);">- * \brief Linker script for running in internal SRAM on the SAME54P20A</span><br><span style="color: hsl(0, 100%, 40%);">- *</span><br><span style="color: hsl(0, 100%, 40%);">- * Copyright (c) 2018 Microchip Technology Inc.</span><br><span style="color: hsl(0, 100%, 40%);">- *</span><br><span style="color: hsl(0, 100%, 40%);">- * \asf_license_start</span><br><span style="color: hsl(0, 100%, 40%);">- *</span><br><span style="color: hsl(0, 100%, 40%);">- * \page License</span><br><span style="color: hsl(0, 100%, 40%);">- *</span><br><span style="color: hsl(0, 100%, 40%);">- * SPDX-License-Identifier: Apache-2.0</span><br><span style="color: hsl(0, 100%, 40%);">- *</span><br><span style="color: hsl(0, 100%, 40%);">- * Licensed under the Apache License, Version 2.0 (the "License"); you may</span><br><span style="color: hsl(0, 100%, 40%);">- * not use this file except in compliance with the License.</span><br><span style="color: hsl(0, 100%, 40%);">- * You may obtain a copy of the Licence at</span><br><span style="color: hsl(0, 100%, 40%);">- * </span><br><span style="color: hsl(0, 100%, 40%);">- * http://www.apache.org/licenses/LICENSE-2.0</span><br><span style="color: hsl(0, 100%, 40%);">- * </span><br><span style="color: hsl(0, 100%, 40%);">- * Unless required by applicable law or agreed to in writing, software</span><br><span style="color: hsl(0, 100%, 40%);">- * distributed under the License is distributed on an AS IS BASIS, WITHOUT</span><br><span style="color: hsl(0, 100%, 40%);">- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span><br><span style="color: hsl(0, 100%, 40%);">- * See the License for the specific language governing permissions and</span><br><span style="color: hsl(0, 100%, 40%);">- * limitations under the License.</span><br><span style="color: hsl(0, 100%, 40%);">- *</span><br><span style="color: hsl(0, 100%, 40%);">- * \asf_license_stop</span><br><span style="color: hsl(0, 100%, 40%);">- *</span><br><span style="color: hsl(0, 100%, 40%);">- */</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">-OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")</span><br><span style="color: hsl(0, 100%, 40%);">-OUTPUT_ARCH(arm)</span><br><span style="color: hsl(0, 100%, 40%);">-SEARCH_DIR(.)</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">-/* Memory Spaces Definitions */</span><br><span style="color: hsl(0, 100%, 40%);">-MEMORY</span><br><span style="color: hsl(0, 100%, 40%);">-{</span><br><span style="color: hsl(0, 100%, 40%);">- ram (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00040000</span><br><span style="color: hsl(0, 100%, 40%);">- bkupram (rwx) : ORIGIN = 0x47000000, LENGTH = 0x00002000</span><br><span style="color: hsl(0, 100%, 40%);">- qspi (rwx) : ORIGIN = 0x04000000, LENGTH = 0x01000000</span><br><span style="color: hsl(0, 100%, 40%);">-}</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">-/* The stack size used by the application. NOTE: you need to adjust according to your application. */</span><br><span style="color: hsl(0, 100%, 40%);">-STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : DEFINED(__stack_size__) ? __stack_size__ : 0x10000;</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">-/* Section Definitions */</span><br><span style="color: hsl(0, 100%, 40%);">-SECTIONS</span><br><span style="color: hsl(0, 100%, 40%);">-{</span><br><span style="color: hsl(0, 100%, 40%);">- .text :</span><br><span style="color: hsl(0, 100%, 40%);">- {</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- _sfixed = .;</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP(*(.vectors .vectors.*))</span><br><span style="color: hsl(0, 100%, 40%);">- *(.text .text.* .gnu.linkonce.t.*)</span><br><span style="color: hsl(0, 100%, 40%);">- *(.glue_7t) *(.glue_7)</span><br><span style="color: hsl(0, 100%, 40%);">- *(.rodata .rodata* .gnu.linkonce.r.*)</span><br><span style="color: hsl(0, 100%, 40%);">- *(.ARM.extab* .gnu.linkonce.armextab.*)</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* Support C constructors, and C destructors in both user code</span><br><span style="color: hsl(0, 100%, 40%);">- and the C library. This also provides support for C++ code. */</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP(*(.init))</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- __preinit_array_start = .;</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(.preinit_array))</span><br><span style="color: hsl(0, 100%, 40%);">- __preinit_array_end = .;</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- __init_array_start = .;</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(SORT(.init_array.*)))</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(.init_array))</span><br><span style="color: hsl(0, 100%, 40%);">- __init_array_end = .;</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*crtbegin.o(.ctors))</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(SORT(.ctors.*)))</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*crtend.o(.ctors))</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP(*(.fini))</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- __fini_array_start = .;</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(.fini_array))</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(SORT(.fini_array.*)))</span><br><span style="color: hsl(0, 100%, 40%);">- __fini_array_end = .;</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*crtbegin.o(.dtors))</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*(SORT(.dtors.*)))</span><br><span style="color: hsl(0, 100%, 40%);">- KEEP (*crtend.o(.dtors))</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- _efixed = .; /* End of text section */</span><br><span style="color: hsl(0, 100%, 40%);">- } > ram</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* .ARM.exidx is sorted, so has to go in its own output section. */</span><br><span style="color: hsl(0, 100%, 40%);">- PROVIDE_HIDDEN (__exidx_start = .);</span><br><span style="color: hsl(0, 100%, 40%);">- .ARM.exidx :</span><br><span style="color: hsl(0, 100%, 40%);">- {</span><br><span style="color: hsl(0, 100%, 40%);">- *(.ARM.exidx* .gnu.linkonce.armexidx.*)</span><br><span style="color: hsl(0, 100%, 40%);">- } > ram</span><br><span style="color: hsl(0, 100%, 40%);">- PROVIDE_HIDDEN (__exidx_end = .);</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- _etext = .;</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- .relocate : AT (_etext)</span><br><span style="color: hsl(0, 100%, 40%);">- {</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- _srelocate = .;</span><br><span style="color: hsl(0, 100%, 40%);">- *(.ramfunc .ramfunc.*);</span><br><span style="color: hsl(0, 100%, 40%);">- *(.data .data.*);</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- _erelocate = .;</span><br><span style="color: hsl(0, 100%, 40%);">- } > ram</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- .bkupram (NOLOAD):</span><br><span style="color: hsl(0, 100%, 40%);">- {</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(8);</span><br><span style="color: hsl(0, 100%, 40%);">- _sbkupram = .;</span><br><span style="color: hsl(0, 100%, 40%);">- *(.bkupram .bkupram.*);</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(8);</span><br><span style="color: hsl(0, 100%, 40%);">- _ebkupram = .;</span><br><span style="color: hsl(0, 100%, 40%);">- } > bkupram</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- .qspi (NOLOAD):</span><br><span style="color: hsl(0, 100%, 40%);">- {</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(8);</span><br><span style="color: hsl(0, 100%, 40%);">- _sqspi = .;</span><br><span style="color: hsl(0, 100%, 40%);">- *(.qspi .qspi.*);</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(8);</span><br><span style="color: hsl(0, 100%, 40%);">- _eqspi = .;</span><br><span style="color: hsl(0, 100%, 40%);">- } > qspi</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* .bss section which is used for uninitialized data */</span><br><span style="color: hsl(0, 100%, 40%);">- .bss (NOLOAD) :</span><br><span style="color: hsl(0, 100%, 40%);">- {</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- _sbss = . ;</span><br><span style="color: hsl(0, 100%, 40%);">- _szero = .;</span><br><span style="color: hsl(0, 100%, 40%);">- *(.bss .bss.*)</span><br><span style="color: hsl(0, 100%, 40%);">- *(COMMON)</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- _ebss = . ;</span><br><span style="color: hsl(0, 100%, 40%);">- _ezero = .;</span><br><span style="color: hsl(0, 100%, 40%);">- } > ram</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* stack section */</span><br><span style="color: hsl(0, 100%, 40%);">- .stack (NOLOAD):</span><br><span style="color: hsl(0, 100%, 40%);">- {</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(8);</span><br><span style="color: hsl(0, 100%, 40%);">- _sstack = .;</span><br><span style="color: hsl(0, 100%, 40%);">- . = . + STACK_SIZE;</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(8);</span><br><span style="color: hsl(0, 100%, 40%);">- _estack = .;</span><br><span style="color: hsl(0, 100%, 40%);">- } > ram</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- . = ALIGN(4);</span><br><span style="color: hsl(0, 100%, 40%);">- _end = . ;</span><br><span style="color: hsl(0, 100%, 40%);">-}</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/c/osmo-asf4-dfu/+/16849">change 16849</a>. 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<div style="display:none"> Gerrit-Project: osmo-asf4-dfu </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-Change-Id: I5641adf1363346acb5f50fbaef0083508d5bfee8 </div>
<div style="display:none"> Gerrit-Change-Number: 16849 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: tsaitgaist <kredon@sysmocom.de> </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>