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Add Checksums to Firmware & External App images (#1809)

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* Pad image to 1MB and add simple checksum

* Test code to verify firmware checksum

* Comment out unneeded zlib

* Add files via upload

* Print space remaining in ROM

* Append checksum to external apps too

* Check external app checksums when loading

* Is it 2024 already?!

* Validate firmware checksum before flashing

* Add files via upload

* Added flash error warning to nav screen

* Clang

* Replaced some hard-coded values with #defines

* Check FW checksum before USB serial flash too

* Add files via upload
This commit is contained in:
Mark Thompson 2024-01-24 16:37:21 -06:00 • committed by GitHub
parent 2d98c5d311
commit 6a6c6d6502
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GPG key ID: B5690EEEBB952194
13 changed files with 179 additions and 13 deletions
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4
firmware/common/portapack_persistent_memory.cpp
View file

@ -32,6 +32,7 @@
#include "string_format.hpp"
#include "ui_styles.hpp"
#include "ui_painter.hpp"
#include "ui_flash_utility.hpp"
#include "utility.hpp"
#include "rtc_time.hpp"
@ -1051,6 +1052,9 @@ bool debug_dump() {
pmem_dump_file.write_line("Ext APPS version req'd: 0x" + to_string_hex(VERSION_MD5));
pmem_dump_file.write_line("GCC version: " + to_string_dec_int(__GNUC__) + "." + to_string_dec_int(__GNUC_MINOR__) + "." + to_string_dec_int(__GNUC_PATCHLEVEL__));
// firmware checksum
pmem_dump_file.write_line("Firmware calculated checksum: 0x" + to_string_hex(simple_checksum(FLASH_STARTING_ADDRESS, FLASH_ROM_SIZE), 8));
// write persistent memory
pmem_dump_file.write_line("\n[Persistent Memory]");

7
firmware/common/utility.cpp
View file

@ -235,3 +235,10 @@ std::string join(char c, std::initializer_list<std::string_view> strings) {
return result;
}
uint32_t simple_checksum(uint32_t buffer_address, uint32_t length) {
uint32_t checksum = 0;
for (uint32_t i = 0; i < length; i += 4)
checksum += *(uint32_t*)(buffer_address + i);
return checksum;
}

2
firmware/common/utility.hpp
View file

@ -217,4 +217,6 @@ struct range_t {
std::string join(char c, std::initializer_list<std::string_view> strings);
uint32_t simple_checksum(uint32_t buffer_address, uint32_t length);
#endif /*__UTILITY_H__*/