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Re-enabled self-updater with SAMD51 support.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| [submodule "lib/uf2"] | ||
| path = lib/uf2 | ||
| url = https://github.com/Microsoft/uf2.git |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| import sys | ||
| import os | ||
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| def update_crc(new_byte, current_crc): | ||
| crc = current_crc ^ new_byte << 8 | ||
| for cmpt in range(8): | ||
| if crc & 0x8000: | ||
| crc = crc << 1 ^ 0x1021 | ||
| else: | ||
| crc = crc << 1 | ||
| crc &= 0xffff | ||
| return crc | ||
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| # Load the bootloader file | ||
| bootloader_size = int(sys.argv[1]) | ||
| bin_name = sys.argv[2] | ||
| bootloader = bytearray() | ||
| with open(bin_name, "rb") as bootloader_bin: | ||
| bootloader.extend(bootloader_bin.read()) | ||
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| # Fill the remaining space with 0xff. | ||
| bootloader.extend([0xff] * (bootloader_size - len(bootloader))) | ||
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| # Output the bootloader binary data into C code to use in the self updater. | ||
| with open(os.path.dirname(bin_name) + "/selfdata.c", "w") as output: | ||
| output.write("#include <stdint.h>\n") | ||
| output.write("const uint8_t bootloader[{}] ".format(bootloader_size) + | ||
| "__attribute__ ((aligned (4))) = {") | ||
| crcs = [] | ||
| crc = 0 | ||
| for row in range(bootloader_size / 16): | ||
| # Save the crc every 1k. | ||
| if row % (1024 / 16) == 0 and row > 0: | ||
| crcs.append(crc) | ||
| crc = 0 | ||
| start_index = row * 16 | ||
| row_bytes = bootloader[start_index:start_index+16] | ||
| formatted_bytes = ["0x{:02x}".format(x) for x in row_bytes] | ||
| output.write(", ".join(formatted_bytes) + ",\n") | ||
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| # Update the crc | ||
| for b in row_bytes: | ||
| crc = update_crc(b, crc) | ||
| crcs.append(crc) # Add the last crc | ||
| output.write("\n};\n") | ||
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| crcs = ["0x{:04x}".format(x) for x in crcs] | ||
| output.write("const uint16_t bootloader_crcs[] = {" + | ||
| " ,".join(crcs) + "};\n") |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,163 @@ | ||
| /** | ||
| * \file | ||
| * | ||
| * \brief Linker script for running in internal FLASH on the SAMD51J19A | ||
| * | ||
| * Copyright (c) 2017 Microchip Technology Inc. | ||
| * | ||
| * \asf_license_start | ||
| * | ||
| * \page License | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may | ||
| * not use this file except in compliance with the License. | ||
| * You may obtain a copy of the Licence at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an AS IS BASIS, WITHOUT | ||
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| * | ||
| * \asf_license_stop | ||
| * | ||
| */ | ||
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| OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") | ||
| OUTPUT_ARCH(arm) | ||
| SEARCH_DIR(.) | ||
|
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||
| /* Memory Spaces Definitions */ | ||
| MEMORY | ||
| { | ||
| rom (rx) : ORIGIN = 0x00004000, LENGTH = 0x00080000 - 0x4000 | ||
| ram (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00030000 | ||
| bkupram (rwx) : ORIGIN = 0x47000000, LENGTH = 0x00002000 | ||
| qspi (rwx) : ORIGIN = 0x04000000, LENGTH = 0x01000000 | ||
| } | ||
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| /* The stack size used by the application. NOTE: you need to adjust according to your application. */ | ||
| STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : DEFINED(__stack_size__) ? __stack_size__ : 0xC000; | ||
|
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| /* Section Definitions */ | ||
| SECTIONS | ||
| { | ||
| .text : | ||
| { | ||
| . = ALIGN(4); | ||
| _sfixed = .; | ||
| KEEP(*(.vectors .vectors.*)) | ||
| *(.text .text.* .gnu.linkonce.t.*) | ||
| *(.glue_7t) *(.glue_7) | ||
| *(.rodata .rodata* .gnu.linkonce.r.*) | ||
| *(.ARM.extab* .gnu.linkonce.armextab.*) | ||
|
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| /* Support C constructors, and C destructors in both user code | ||
| and the C library. This also provides support for C++ code. */ | ||
| . = ALIGN(4); | ||
| KEEP(*(.init)) | ||
| . = ALIGN(4); | ||
| __preinit_array_start = .; | ||
| KEEP (*(.preinit_array)) | ||
| __preinit_array_end = .; | ||
|
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| . = ALIGN(4); | ||
| __init_array_start = .; | ||
| KEEP (*(SORT(.init_array.*))) | ||
| KEEP (*(.init_array)) | ||
| __init_array_end = .; | ||
|
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| . = ALIGN(4); | ||
| KEEP (*crtbegin.o(.ctors)) | ||
| KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) | ||
| KEEP (*(SORT(.ctors.*))) | ||
| KEEP (*crtend.o(.ctors)) | ||
|
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| . = ALIGN(4); | ||
| KEEP(*(.fini)) | ||
|
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| . = ALIGN(4); | ||
| __fini_array_start = .; | ||
| KEEP (*(.fini_array)) | ||
| KEEP (*(SORT(.fini_array.*))) | ||
| __fini_array_end = .; | ||
|
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| KEEP (*crtbegin.o(.dtors)) | ||
| KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) | ||
| KEEP (*(SORT(.dtors.*))) | ||
| KEEP (*crtend.o(.dtors)) | ||
|
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| . = ALIGN(4); | ||
| _efixed = .; /* End of text section */ | ||
| } > rom | ||
|
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| /* .ARM.exidx is sorted, so has to go in its own output section. */ | ||
| PROVIDE_HIDDEN (__exidx_start = .); | ||
| .ARM.exidx : | ||
| { | ||
| *(.ARM.exidx* .gnu.linkonce.armexidx.*) | ||
| } > rom | ||
| PROVIDE_HIDDEN (__exidx_end = .); | ||
|
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||
| . = ALIGN(4); | ||
| _etext = .; | ||
|
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| .relocate : AT (_etext) | ||
| { | ||
| . = ALIGN(4); | ||
| _srelocate = .; | ||
| *(.ramfunc .ramfunc.*); | ||
| *(.data .data.*); | ||
| . = ALIGN(4); | ||
| _erelocate = .; | ||
| } > ram | ||
|
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| .bkupram (NOLOAD): | ||
| { | ||
| . = ALIGN(8); | ||
| _sbkupram = .; | ||
| *(.bkupram .bkupram.*); | ||
| . = ALIGN(8); | ||
| _ebkupram = .; | ||
| } > bkupram | ||
|
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| .qspi (NOLOAD): | ||
| { | ||
| . = ALIGN(8); | ||
| _sqspi = .; | ||
| *(.qspi .qspi.*); | ||
| . = ALIGN(8); | ||
| _eqspi = .; | ||
| } > qspi | ||
|
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| /* .bss section which is used for uninitialized data */ | ||
| .bss (NOLOAD) : | ||
| { | ||
| . = ALIGN(4); | ||
| _sbss = . ; | ||
| _szero = .; | ||
| *(.bss .bss.*) | ||
| *(COMMON) | ||
| . = ALIGN(4); | ||
| _ebss = . ; | ||
| _ezero = .; | ||
| } > ram | ||
|
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| /* stack section */ | ||
| .stack (NOLOAD): | ||
| { | ||
| . = ALIGN(8); | ||
| _sstack = .; | ||
| . = . + STACK_SIZE; | ||
| . = ALIGN(8); | ||
| _estack = .; | ||
| } > ram | ||
|
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| . = ALIGN(4); | ||
| _end = . ; | ||
| } |
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