Additionally, always enable the partition MD5 check if flash encryption is on in
Release mode. This ensures the partition table ciphertext has not been modified
(CVE-2021-27926).
The exception is pre-V3.1 ESP-IDF bootloaders and partition tables, which
don't have support for the MD5 entry.
* Patched longjmp to be context-switch safe
longjmp modifies the windowbase and windowstart
registers, which isn't safe if a context switch
occurs during the modification. After a context
switch, windowstart and windowbase will be
different, leading to a wrongly set windowstart
bit due to longjmp writing it based on the
windowbase before the context switch. This
corrupts the registers at the next window
overflow reaching that wrongly set bit.
The solution is to disable interrupts during
this code. It is only 6 instructions long,
the impact shouldn't be significant.
The fix is implemented as a wrapper which
replaces the original first instructions of
longjmp which are buggy. Then, it jumps back
to execute the rest of the original longjmp
function.
Added a comparably reliable test to the
test apps.
esptool_py: Fix issue where build with limited components doesn't include esptool_py
Closes IDFGH-4876 and IDFGH-4874
See merge request espressif/esp-idf!12653
The CPU might prefetch instructions, which means it in some cases
will try to fetch instruction located after the last instruction in
flash.text.
Add dummy bytes to ensure fetching these wont result in an error,
e.g. MMU exceptions
ESP32 V1 and V2 - protection bits.
ESP32xx V2: revoke bits, protection bits
- refactor efuse component
- adds some APIs for esp32 chips as well as for esp32xx chips
- Cmake shows an error if the partition table has a test app.
- BOOTLOADER_APP_TEST depends on !BOOTLOADER_APP_ANTI_ROLLBACK.
- Bootloader does not boot the test app if secure version is low.
Closes: https://www.esp32.com/viewtopic.php?f=13&t=19164&p=71302#p71302
* Target components pull in xtensa component directly
* Use CPU HAL where applicable
* Remove unnecessary xtensa headers
* Compilation changes necessary to support non-xtensa gcc types (ie int32_t/uint32_t is no
longer signed/unsigned int).
Changes come from internal branch commit a6723fc
Currently USB CDC Download requires the `--no-stub` option of `esptool`. This change inverts the Kconfig option to negative, so that it can be `selected` by other options or enabled in applications through `sdkconfig.defaults`.
Summary of changes:
- bootloader_clock split into *_clock_init and *_clock_loader.
Only esp_clk_apb_freq is in *_clock_loader.
- bootloader_common moved out of loader; functions needed in loader
(or, referenced from bootloader_utility) were moved into
bootloader_common_loader.c.
- assert and abort moved into bootloader_panic, made part of the
loader
- rtc_clk and rtc_time made part of loader
Bootloader DRAM now ends at 0x3FFEAB00 which is the start of ROM
static RAM (reclaimable after app is running).
IRAM loader segment increased by 8KB.
Available total static RAM for the app is now reduced by 16KB.
Allows booting in QIO/QOUT mode or with PSRAM on ESP32-PICO-V3 and
ESP32-PICO-V3-O2 without any config changes.
Custom WP pins (needed for fully custom circuit boards) should still be compatible.
flash_enctryption: enabled flash encryption example on esp32s2
bootloader: raise WDT overflow value providing sufficient interval to encrypt app partition
flash_ encrypt: Fixed the TODOs on flash encryption key generation for esp32s2
flash_encryption: added secure boot features to flash enctryption for esp32s2
bootloader: leave only esp32s2 compatible potentially insecure options on menuconfig.
flash_encryption: removed secure boot version 1 from esp32s2 encryption code
flash_encryption: added CONFIG_SECURE_FLASH_REQUIRE_ALREADY_ENABLED option for esp32s2
flash_encryption: fixed the count of left plaintext flash
flash_encryption: disable dcache and icache download when using encryption in release mode
flash_encryption: add cache potentally insecure options for s2 chips
flash_encryption: fixed bug which bricked some chips in relase mode
This commit updates the watchdog timers (MWDT and RWDT)
in the following ways:
- Add seprate LL for MWDT and RWDT.
- Add a combined WDT HAL for all Watchdog Timers
- Update int_wdt.c and task_wdt.c to use WDT HAL
- Remove most dependencies on LL or direct register access
in other components. They will now use the WDT HAL
- Update use of watchdogs (including RTC WDT) in bootloader and
startup code to use the HAL layer.
Change the default bootloader config to -Os to save size.
This is a useful feature because it allows switching between debug
and release configs in the app without also needing to account for a
size change in the bootloader.
Goal is that multiple faults would be required to bypass a boot-time signature check.
- Also strengthens some address range checks for safe app memory addresses
- Change pre-enable logic to also check the bootloader signature before enabling SBV2 on ESP32
Add some additional checks for invalid sections:
- Sections only partially in DRAM or IRAM are invalid
- If a section is in D/IRAM, allow the possibility only some is in D/IRAM
- Only pass sections that are entirely in the same type of RTC memory region
