77c350c149
Adds support for virtual e-fuses on esp32 socs Signed-off-by: Marcio Ribeiro <marcio.ribeiro@espressif.com>
48 lines
1.6 KiB
Plaintext
48 lines
1.6 KiB
Plaintext
# Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
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# SPDX-License-Identifier: Apache-2.0
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if SOC_FAMILY_ESPRESSIF_ESP32
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config ESP32_EFUSE_VIRTUAL
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bool "Simulate eFuse operations in RAM"
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help
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If "y" - The virtual mode is enabled and all eFuse operations (read and write) are redirected
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to RAM instead of eFuse registers, all permanent changes (via eFuse) are disabled.
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If it is "y", then SECURE_FLASH_ENCRYPTION_MODE_RELEASE cannot be used.
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Because the EFUSE VIRT mode is for testing only.
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During startup, the eFuses are copied into RAM. This mode is useful for fast tests.
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config ESP32_EFUSE_VIRTUAL_KEEP_IN_FLASH
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bool "Keep eFuses in flash"
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depends on ESP32_EFUSE_VIRTUAL
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help
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In addition to the "Simulate eFuse operations in RAM" option, this option just adds
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a feature to keep eFuses after reboots in flash memory. To use this mode the partition_table
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should have the `sys_partition` partition.
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During startup, the eFuses are copied from flash or,
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in case if flash is empty, from real eFuse to RAM and then update flash.
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This mode is useful when need to keep changes after reboot
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(testing secure_boot and flash_encryption).
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config ESP32_EFUSE_VIRTUAL_OFFSET
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hex
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depends on ESP32_EFUSE_VIRTUAL_KEEP_IN_FLASH
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default $(dt_nodelabel_reg_addr_hex,sys_partition) if $(dt_nodelabel_exists,sys_partition)
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default 0x0
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config ESP32_EFUSE_VIRTUAL_SIZE
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hex
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depends on ESP32_EFUSE_VIRTUAL_KEEP_IN_FLASH
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default 0x2000 if $(dt_nodelabel_exists,sys_partition)
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default 0x0
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config ESP32_EFUSE_MAX_BLK_LEN
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int
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default 192 if SOC_SERIES_ESP32
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default 256
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endif # SOC_FAMILY_ESPRESSIF_ESP32
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