Espressif ESP32-S2 Programming Manual page 820

Chapter 2. API Reference
• esp_efuse_set_key_purpose()
• esp_efuse_set_keypurpose_dis_write()
eFuse key block.
• esp_efuse_find_unused_key_block()
found.
• esp_efuse_count_unused_key_blocks()
range EFUSE_BLK_KEY0..EFUSE_BLK_KEY_MAX
• esp_efuse_get_digest_revoke()
tion bit.
• esp_efuse_set_digest_revoke()
• esp_efuse_get_write_protect_of_digest_revoke()
cure Boot public key digest revocation bit.
• esp_efuse_set_write_protect_of_digest_revoke()
Boot public key digest revocation bit.
How to add a new field
1. Find a free bits for field. Show esp_efuse_table.csv file or run idf.py show-efuse-table or the next
command:
$ ./efuse_table_gen.py esp32s2/esp_efuse_table.csv --info
eFuse coding scheme: NONE
# field_name
1 WR_DIS_FLASH_CRYPT_CNT
2 WR_DIS_BLK1
3 WR_DIS_BLK2
4 WR_DIS_BLK3
5 RD_DIS_BLK1
6 RD_DIS_BLK2
7 RD_DIS_BLK3
8 FLASH_CRYPT_CNT
9 MAC_FACTORY
10 MAC_FACTORY
11 MAC_FACTORY
12 MAC_FACTORY
13 MAC_FACTORY
14 MAC_FACTORY
15 MAC_FACTORY_CRC
16 CHIP_VER_DIS_APP_CPU
17 CHIP_VER_DIS_BT
18 CHIP_VER_PKG
19 CHIP_CPU_FREQ_LOW
20 CHIP_CPU_FREQ_RATED
21 CHIP_VER_REV1
22 ADC_VREF_AND_SDIO_DREF
23 XPD_SDIO_REG
24 SDIO_TIEH
25 SDIO_FORCE
26 ENCRYPT_CONFIG
27 CONSOLE_DEBUG_DISABLE
28 ABS_DONE_0
29 DISABLE_JTAG
30 DISABLE_DL_ENCRYPT
31 DISABLE_DL_DECRYPT
32 DISABLE_DL_CACHE
33 ENCRYPT_FLASH_KEY
34 SECURE_BOOT_KEY
35 MAC_CUSTOM_CRC
36 MAC_CUSTOM
37 ADC1_TP_LOW
Espressif Systems
- Sets a key purpose for an eFuse key block.
- Sets a write protection of the key purpose field for an
- Search for an unused key block and return the first one
- Returns the number of unused eFuse key blocks in the
- Returns the status of the Secure Boot public key digest revoca-
- Sets the Secure Boot public key digest revocation bit.
efuse_block
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK0
EFUSE_BLK1
EFUSE_BLK2
EFUSE_BLK3
EFUSE_BLK3
EFUSE_BLK3
809
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- Returns a write protection of the Se-
- Sets a write protection of the Secure
bit_start bit_count
2 1
7 1
8 1
9 1
16 1
17 1
18 1
20 7
32 8
40 8
48 8
56 8
64 8
72 8
80 8
96 1
97 1
105 3
108 1
109 1
111 1
136 6
142 1
143 1
144 1
188 4
194 1
196 1
198 1
199 1
200 1
201 1
0 256
0 256
0 8
8 48
96 7
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Release v4.4