stm32: If the memory usage is high, the flash is abnormal. #14779
Description
Describe the bug
If the memory usage on the STM32 board is high, flash will behave abnormally.
If you do flash, the board will not do anything.
To Reproduce
The test was stm32f4_disco.
I modified hello_world slightly to increase memory usage.
Steps to reproduce the behavior:
west init zephyrproject -m https://github.com/KwonTae-young/zephyr/ --mr memory_usage_flash
cd zephyrproject/zephyr
source zephyr-env.sh
mkdir samples/hello_world/build
cd samples/hello_world/build/
cmake -DBOARD=stm32f4_disco ..
make -j8 flash
Expected behavior
I expected to see hello world in console.
Impact
If memory usage is high, flash will behave abnormally.
Screenshots or console output
Memory usage is 83.59%.
No errors occur during build and flash.
root:build# pwd
/tmp/zephyrproject/zephyr/samples/hello_world/build
root:build#
root:build# cmake -DBOARD=stm32f4_disco ..
Zephyr version: 1.14.0
-- Found PythonInterp: /usr/bin/python3 (found suitable version "3.6.7", minimum required is "3.4")
-- Selected BOARD stm32f4_disco
-- Found west: /usr/local/bin/west (found suitable version "0.5.6", minimum required is "0.5.4")
-- Loading /tmp/zephyrproject/zephyr/boards/arm/stm32f4_disco/stm32f4_disco.dts as base
-- Overlaying /tmp/zephyrproject/zephyr/dts/common/common.dts
Parsing Kconfig tree in /tmp/zephyrproject/zephyr/Kconfig
Loading /tmp/zephyrproject/zephyr/boards/arm/stm32f4_disco/stm32f4_disco_defconfig as base
Merging /tmp/zephyrproject/zephyr/samples/hello_world/prj.conf
Configuration written to '/tmp/zephyrproject/zephyr/samples/hello_world/build/zephyr/.config'
-- Cache files will be written to: /root/.cache/zephyr
-- The C compiler identification is GNU 8.3.0
-- The CXX compiler identification is GNU 8.3.0
-- The ASM compiler identification is GNU
-- Found assembler: /opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc
-- Performing Test toolchain_is_ok
-- Performing Test toolchain_is_ok - Success
-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/zephyrproject/zephyr/samples/hello_world/build
root:build#
root:build#
root:build# make -j8 flash
Scanning dependencies of target driver_validation_h_target
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[ 4%] Built target syscall_macros_h_target
[ 4%] Generating include/generated/syscall_dispatch.c, include/generated/syscall_list.h
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[ 94%] Linking C executable zephyr_prebuilt.elf
Memory region Used Size Region Size %age Used
FLASH: 14040 B 1 MB 1.34%
SRAM: 164352 B 192 KB 83.59%
IDT_LIST: 184 B 2 KB 8.98%
[ 94%] Built target zephyr_prebuilt
Scanning dependencies of target linker_pass_final_script_target
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[ 98%] Linking C executable zephyr.elf
Generating files from zephyr.elf for board: stm32f4_disco
[ 98%] Built target kernel_elf
Scanning dependencies of target flash
[100%] Flashing stm32f4_disco
Using runner: openocd
Open On-Chip Debugger 0.10.0+dev-g0b1cbf175-dirty (2019-03-08-20:54)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 2000 kHz
adapter_nsrst_delay: 100
none separate
srst_only separate srst_nogate srst_open_drain connect_deassert_srst
Info : clock speed 2000 kHz
Info : STLINK V2J25M14 (API v2) VID:PID 0483:374B
Info : Target voltage: 2.889911
Info : stm32f4x.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : Listening on port 3333 for gdb connections
TargetName Type Endian TapName State
-- ------------------ ---------- ------ ------------------ ------------
0* stm32f4x.cpu hla_target little stm32f4x.cpu running
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
adapter speed: 1800 kHz
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x080011ac msp: 0x200277a0
auto erase enabled
Info : device id = 0x10076413
Info : flash size = 1024 kbytes
wrote 16384 bytes from file /tmp/zephyrproject/zephyr/samples/hello_world/build/zephyr/zephyr.elf in 1.886646s (8.481 KiB/s)
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
adapter speed: 1800 kHz
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x080011ac msp: 0x200277a0
verified 14040 bytes in 0.173583s (78.988 KiB/s)
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
adapter speed: 1800 kHz
shutdown command invoked
[100%] Built target flash
root:build#
However, you can not see any output from the console.
Environment (please complete the following information):
- OS: Ubuntu 18.04
- Toolchain: Zephyr SDK 0.10.0
- Commit SHA: 1f6ab22
Additional context
- Test on another board
I also tested it innrf52840_pca10056.
Even if memory usage is99.6%, it will work after flash.
***** Booting Zephyr OS zephyr-v1.13.0-5942-g1f6ab221f242 *****
Hello World! nrf52840_pca10056
0x20000008
sizeof(test) = 256000
- Change memory usage
stm32f4_discoreduces the memory usage to 63.25%, and the flash works normally.
Below is the console output by memory usage instm32f4_disco.
- SIZE = 30000(63.25%)
***** Booting Zephyr OS zephyr-v1.13.0-5942-g1f6ab221f242 *****
Hello World! stm32f4_disco
0x20000008
sizeof(test) = 120000
- SIZE = 40000(83.59%)
- Flash with ST-Link Utility
I tried to flash zephyr.bin generated by build usingST-Link Utility.
The result was the same.
I'm sorry I do not have enough English.
Thank you.