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Merged
merged 5 commits into from
Aug 8, 2025
+16 −8
Merged

boot: Switch to picolibc #498

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8f52ec8
Revert "[nrf noup] boot: zephyr: Add NCS boot banner"
nordicjm Aug 7, 2025
679b062
Revert "[nrf noup] zephyr: Restore default RTC user channel count"
nordicjm Aug 7, 2025
9aa2209
[nrf fromtree] boot: Switch to picolibc
keith-packard May 10, 2025
7f173eb
[nrf noup] zephyr: Restore default RTC user channel count
Damian-Nordic Mar 21, 2022
82af926
[nrf noup] boot: zephyr: Add NCS boot banner
nordicjm Jun 11, 2024
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6 changes: 4 additions & 2 deletions boot/zephyr/prj.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -32,8 +32,10 @@ CONFIG_LOG_DEFAULT_LEVEL=0
CONFIG_MCUBOOT_LOG_LEVEL_INF=y
### Decrease footprint by ~4 KB in comparison to CBPRINTF_COMPLETE=y
CONFIG_CBPRINTF_NANO=y
### Use the minimal C library to reduce flash usage
CONFIG_MINIMAL_LIBC=y
### Use picolibc to reduce flash usage
CONFIG_PICOLIBC=y
### Disable malloc arena because we don't need it
CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=0
CONFIG_NRF_RTC_TIMER_USER_CHAN_COUNT=0

# NCS boot banner
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3 changes: 2 additions & 1 deletion boot/zephyr/socs/esp32_procpu.conf
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Expand Up @@ -16,4 +16,5 @@ CONFIG_LOG_DEFAULT_LEVEL=0
CONFIG_DEBUG=n

CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_MINIMAL_LIBC=y
CONFIG_PICOLIBC=y
CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=0
3 changes: 2 additions & 1 deletion boot/zephyr/socs/esp32c2.conf
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Expand Up @@ -17,4 +17,5 @@ CONFIG_DEBUG=n

CONFIG_XIP=n
CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_MINIMAL_LIBC=y
CONFIG_PICOLIBC=y
CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=0
3 changes: 2 additions & 1 deletion boot/zephyr/socs/esp32c3.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -17,4 +17,5 @@ CONFIG_DEBUG=n

CONFIG_XIP=n
CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_MINIMAL_LIBC=y
CONFIG_PICOLIBC=y
CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=0
3 changes: 2 additions & 1 deletion boot/zephyr/socs/esp32c6.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -17,4 +17,5 @@ CONFIG_DEBUG=n

CONFIG_XIP=n
CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_MINIMAL_LIBC=y
CONFIG_PICOLIBC=y
CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=0
3 changes: 2 additions & 1 deletion boot/zephyr/socs/esp32s2.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -16,4 +16,5 @@ CONFIG_LOG_DEFAULT_LEVEL=0
CONFIG_DEBUG=n

CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_MINIMAL_LIBC=y
CONFIG_PICOLIBC=y
CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=0
3 changes: 2 additions & 1 deletion boot/zephyr/socs/esp32s3_procpu.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -16,4 +16,5 @@ CONFIG_LOG_DEFAULT_LEVEL=0
CONFIG_DEBUG=n

CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_MINIMAL_LIBC=y
CONFIG_PICOLIBC=y
CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=0
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