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fix(esp_tee): Avoid crypto peripherals reset with esp_restart() from REE

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- Reset the crypto peripherals during TEE initialization
This commit is contained in:
Laukik Hase
2026-07-09 11:56:01 +05:30
parent d39a11ace7
commit cf817f6a65
13 changed files with 111 additions and 158 deletions
Download Patch File Download Diff File Expand all files Collapse all files
components/esp_system/port/soc/esp32c5/system_internal.c
+7 -4
View File
@@ -85,21 +85,24 @@ void esp_system_reset_modules_on_exit(void)
// 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.
#if !CONFIG_SECURE_ENABLE_TEE
// Avoid resetting the TEE-protected crypto peripherals as it would lead to an APM fault
SET_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);
SET_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);
SET_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);
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_ECC_PD_CTRL_REG, PCR_ECC_MEM_FORCE_PD);
#endif // !CONFIG_SECURE_ENABLE_TEE
SET_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_RSA_CONF_REG, PCR_RSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
// UART's sclk is controlled in the PCR register and does not reset with the UART module. The ROM missed enabling
// it when initializing the ROM UART. If it is not turned on, it will trigger LP_WDT in the ROM.
components/esp_system/port/soc/esp32c6/system_internal.c
+5 -2
View File
@@ -68,19 +68,22 @@ void esp_system_reset_modules_on_exit(void)
// 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.
#if !CONFIG_SECURE_ENABLE_TEE
// Avoid resetting the TEE-protected crypto peripherals as it would lead to an APM fault
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_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_DS_CONF_REG, PCR_DS_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECC_PD_CTRL_REG, PCR_ECC_MEM_FORCE_PD);
#endif // !CONFIG_SECURE_ENABLE_TEE
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_REGDMA_CONF_REG, PCR_REGDMA_RST_EN);
components/esp_system/port/soc/esp32c61/system_internal.c
+5 -2
View File
@@ -83,13 +83,16 @@ void esp_system_reset_modules_on_exit(void)
// 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.
#if !CONFIG_SECURE_ENABLE_TEE
// Avoid resetting the TEE-protected crypto peripherals as it would lead to an APM fault
SET_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);
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_ECC_PD_CTRL_REG, PCR_ECC_MEM_FORCE_PD);
#endif
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
// UART's sclk is controlled in the PCR register and does not reset with the UART module. The ROM missed enabling
// it when initializing the ROM UART. If it is not turned on, it will trigger LP_WDT in the ROM.
components/esp_system/port/soc/esp32h2/system_internal.c
+7 -4
View File
@@ -65,21 +65,24 @@ void esp_system_reset_modules_on_exit(void)
// 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.
#if !CONFIG_SECURE_ENABLE_TEE
// Avoid resetting the TEE-protected crypto peripherals as it would lead to an APM fault
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_DS_CONF_REG, PCR_DS_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECC_CONF_REG, PCR_ECC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_HMAC_CONF_REG, PCR_HMAC_RST_EN);
CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_SHA_CONF_REG, PCR_SHA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECC_PD_CTRL_REG, PCR_ECC_MEM_FORCE_PD);
#endif // !CONFIG_SECURE_ENABLE_TEE
SET_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
SET_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_ECDSA_CONF_REG, PCR_ECDSA_RST_EN);
CLEAR_PERI_REG_MASK(PCR_RSA_CONF_REG, PCR_RSA_RST_EN);
// UART's sclk is controlled in the PCR register and does not reset with the UART module. The ROM missed enabling
// it when initializing the ROM UART. If it is not turned on, it will trigger LP_WDT in the ROM.