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fix(system_internal): Avoid the sec clock reset caused due to resetting all crypto peripherals

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This commit is contained in:
harshal.patil
2025-05-22 14:16:57 +05:30
parent d86c2bde3e
commit e08189f37b
4 changed files with 38 additions and 22 deletions
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16
components/esp_system/port/soc/esp32c5/system_internal.c
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@ -64,19 +64,23 @@ void IRAM_ATTR esp_system_reset_modules_on_exit(void)
// Reset crypto peripherals. This ensures a clean state for the crypto peripherals after a CPU restart // Reset crypto peripherals. This ensures a clean state for the crypto peripherals after a CPU restart
// and hence avoiding any possibility with crypto failure in ROM security workflows. // and hence avoiding any possibility with crypto failure in ROM security workflows.
// We also avoid resetting all the crypto peripherals at once because it would create a period when
// all the peripherals are reset at the same time, which triggers a hardware SEC reset. The SEC reset
// causes the crypto -> APB path to be reset, but the APB -> crypto path is not reset. This asymmetry
// results in the crypto module hanging and refusing all access.
SET_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN); SET_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN);
SET_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
SET_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
SET_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
SET_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN); CLEAR_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN);
SET_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
CLEAR_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN); CLEAR_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
SET_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN); CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN); CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN); CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
SET_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN); CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
SET_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN); CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
} }

16
components/esp_system/port/soc/esp32c61/system_internal.c
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@ -64,19 +64,23 @@ void IRAM_ATTR esp_system_reset_modules_on_exit(void)
// Reset crypto peripherals. This ensures a clean state for the crypto peripherals after a CPU restart // Reset crypto peripherals. This ensures a clean state for the crypto peripherals after a CPU restart
// and hence avoiding any possibility with crypto failure in ROM security workflows. // and hence avoiding any possibility with crypto failure in ROM security workflows.
// We also avoid resetting all the crypto peripherals at once because it would create a period when
// all the peripherals are reset at the same time, which triggers a hardware SEC reset. The SEC reset
// causes the crypto -> APB path to be reset, but the APB -> crypto path is not reset. This asymmetry
// results in the crypto module hanging and refusing all access.
SET_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN); SET_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN);
SET_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
SET_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
SET_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
SET_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN); CLEAR_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN);
SET_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
CLEAR_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN); CLEAR_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
SET_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN); CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN); CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN); CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
SET_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN); CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
SET_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN); CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
} }

16
components/esp_system/port/soc/esp32h21/system_internal.c
View File

@ -59,19 +59,23 @@ void IRAM_ATTR esp_system_reset_modules_on_exit(void)
// Reset crypto peripherals. This ensures a clean state for the crypto peripherals after a CPU restart // Reset crypto peripherals. This ensures a clean state for the crypto peripherals after a CPU restart
// and hence avoiding any possibility with crypto failure in ROM security workflows. // and hence avoiding any possibility with crypto failure in ROM security workflows.
// We also avoid resetting all the crypto peripherals at once because it would create a period when
// all the peripherals are reset at the same time, which triggers a hardware SEC reset. The SEC reset
// causes the crypto -> APB path to be reset, but the APB -> crypto path is not reset. This asymmetry
// results in the crypto module hanging and refusing all access.
SET_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN); SET_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN);
SET_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
SET_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
SET_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
SET_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN); CLEAR_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN);
SET_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
CLEAR_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN); CLEAR_PERI_REG_MASK(PCR_DS_CONF_REG, PCR_DS_RST_EN);
SET_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN); CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN); CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN); CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
SET_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN); CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
SET_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN); CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
} }

12
components/esp_system/port/soc/esp32h4/system_internal.c
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@ -55,15 +55,19 @@ void IRAM_ATTR esp_system_reset_modules_on_exit(void)
// Reset crypto peripherals. This ensures a clean state for the crypto peripherals after a CPU restart // Reset crypto peripherals. This ensures a clean state for the crypto peripherals after a CPU restart
// and hence avoiding any possibility with crypto failure in ROM security workflows. // and hence avoiding any possibility with crypto failure in ROM security workflows.
// We also avoid resetting all the crypto peripherals at once because it would create a period when
// all the peripherals are reset at the same time, which triggers a hardware SEC reset. The SEC reset
// causes the crypto -> APB path to be reset, but the APB -> crypto path is not reset. This asymmetry
// results in the crypto module hanging and refusing all access.
SET_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN); SET_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN);
SET_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
SET_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN); CLEAR_PERI_REG_MASK(PCR_AES_CONF_REG, PCR_AES_RST_EN);
SET_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN); CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN); CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN); CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
SET_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN); CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
} }