524ed20dc8
As part of the work of deprecating TinyCrypt in favor of PSA crypto API, this commit fixes some kconfigs in order to reduce the RAM footprint. In all involved samples RAM usage was extremely high even with TinyCrypt (usually > 98%) and of course it got overflowed once TinyCrypt got replaced by Mbed TLS's PSA Crypto API. Signed-off-by: Valerio Setti <vsetti@baylibre.com>
114 lines
3.0 KiB
Plaintext
114 lines
3.0 KiB
Plaintext
CONFIG_BT=y
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CONFIG_BT_SMP=y
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CONFIG_BT_CENTRAL=y
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# Drivers and peripherals
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CONFIG_I2C=n
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CONFIG_WATCHDOG=n
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CONFIG_PINCTRL=n
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CONFIG_SPI=n
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CONFIG_GPIO=n
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CONFIG_SERIAL=n
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# Power management
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CONFIG_PM=n
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# Interrupts
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CONFIG_DYNAMIC_INTERRUPTS=n
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CONFIG_IRQ_OFFLOAD=n
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# Memory protection
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CONFIG_THREAD_STACK_INFO=n
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CONFIG_THREAD_CUSTOM_DATA=n
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CONFIG_FPU=n
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# Boot
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CONFIG_BOOT_BANNER=n
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CONFIG_BOOT_DELAY=0
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# Console
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CONFIG_CONSOLE=n
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CONFIG_UART_CONSOLE=n
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CONFIG_STDOUT_CONSOLE=n
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CONFIG_PRINTK=n
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CONFIG_EARLY_CONSOLE=n
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# Build
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CONFIG_SIZE_OPTIMIZATIONS=y
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# ARM
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CONFIG_ARM_MPU=n
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# In order to correctly tune the stack sizes for the threads the following
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# Configurations can enabled to print the current use:
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# CONFIG_THREAD_NAME=y
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# CONFIG_THREAD_ANALYZER=y
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# CONFIG_THREAD_ANALYZER_AUTO=y
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# CONFIG_THREAD_ANALYZER_RUN_UNLOCKED=y
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# CONFIG_THREAD_ANALYZER_USE_PRINTK=y
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# CONFIG_THREAD_ANALYZER_AUTO_INTERVAL=20
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# CONFIG_CONSOLE=y
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# CONFIG_UART_CONSOLE=y
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# CONFIG_SERIAL=y
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# CONFIG_PRINTK=y
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# Example output of thread analyzer
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# BT RX : STACK: unused 576 usage 448 / 1024 (43 %); CPU: 0 %
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# BT RX pri : STACK: unused 260 usage 188 / 448 (41 %); CPU: 0 %
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# BT ECC : STACK: unused 256 usage 888 / 1144 (77 %); CPU: 1 %
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# BT TX : STACK: unused 296 usage 344 / 640 (53 %); CPU: 0 %
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# thread_analyzer : STACK: unused 128 usage 384 / 512 (75 %); CPU: 1 %
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# sysworkq : STACK: unused 856 usage 168 / 1024 (16 %); CPU: 0 %
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# logging : STACK: unused 232 usage 536 / 768 (69 %); CPU: 0 %
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# idle 00 : STACK: unused 208 usage 48 / 256 (18 %); CPU: 97 %
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# main : STACK: unused 576 usage 448 / 1024 (43 %); CPU: 0 %
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CONFIG_BT_RX_STACK_SIZE=1024
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CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y
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CONFIG_BT_HCI_TX_STACK_SIZE=640
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CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
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CONFIG_IDLE_STACK_SIZE=128
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CONFIG_MAIN_STACK_SIZE=640
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CONFIG_ISR_STACK_SIZE=1024
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# Disable features not needed
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CONFIG_TIMESLICING=n
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CONFIG_COMMON_LIBC_MALLOC=n
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CONFIG_LOG=n
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CONFIG_ASSERT=n
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# Disable Bluetooth features not needed
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# CONFIG_BT_DEBUG_NONE=y
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CONFIG_BT_ASSERT=n
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CONFIG_BT_DATA_LEN_UPDATE=n
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CONFIG_BT_PHY_UPDATE=n
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CONFIG_BT_GATT_CACHING=n
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CONFIG_BT_GATT_SERVICE_CHANGED=n
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CONFIG_BT_GAP_PERIPHERAL_PREF_PARAMS=n
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CONFIG_BT_SETTINGS_CCC_LAZY_LOADING=y
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CONFIG_BT_HCI_VS=n
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# Disable Bluetooth controller features not needed
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CONFIG_BT_CTLR_PRIVACY=n
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CONFIG_BT_CTLR_PHY_2M=n
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# Reduce Bluetooth buffers
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CONFIG_BT_BUF_EVT_DISCARDABLE_COUNT=1
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CONFIG_BT_BUF_EVT_DISCARDABLE_SIZE=45
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CONFIG_BT_BUF_EVT_RX_COUNT=2
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CONFIG_BT_L2CAP_TX_BUF_COUNT=2
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CONFIG_BT_CTLR_RX_BUFFERS=1
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CONFIG_BT_BUF_ACL_TX_COUNT=3
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CONFIG_BT_BUF_ACL_TX_SIZE=27
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# Limit the number of key slots in PSA Crypto core to reduce
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# RAM footprint
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CONFIG_MBEDTLS_PSA_KEY_SLOT_COUNT=5
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# This is required because otherwise there won't be
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# __heap_start/__heap_end symbols defined in the build. This
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# is due to Mbed TLS which at boot uses standard calloc/free
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# functions and only after the initialization done from Zephyr
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# it switches to its internal memory management functions.
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CONFIG_COMMON_LIBC_MALLOC=y
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