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docs: clarify anti-rollback secure version bits for c2/c5

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Mahavir Jain
2026-03-23 16:21:26 +05:30
parent 56f95eac0b
commit 229a8a78fb
3 changed files with 10 additions and 5 deletions
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5
components/bootloader/Kconfig.app_rollback
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@@ -45,11 +45,14 @@ menu "Application Rollback"
default 32 if IDF_TARGET_ESP32
range 1 4 if IDF_TARGET_ESP32C2
default 4 if IDF_TARGET_ESP32C2
range 1 9 if IDF_TARGET_ESP32C5
default 9 if IDF_TARGET_ESP32C5
range 1 16
default 16
help
The size of the efuse secure version field.
Its length is limited to 32 bits for ESP32 and 16 bits for ESP32-S2.
Its length is limited to 32 bits for ESP32, 4 bits for ESP32-C2,
9 bits for ESP32-C5, and 16 bits for other targets.
This determines how many times the security version can be increased.
config BOOTLOADER_EFUSE_SECURE_VERSION_EMULATE