mirror of
https://github.com/apache/nuttx.git
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esp32s2: Add support to EFUSE
This commit is contained in:
Alan Carvalho de Assis
committed by
Xiang Xiao
Xiang Xiao
parent
1be9d7c57f
commit
2bdb7c0e8d
@@ -354,6 +354,12 @@ config ESP32S2_SPIRAM
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bool "SPI RAM Support"
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default n
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config ESP32S2_EFUSE
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bool "EFUSE support"
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default n
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---help---
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Enable ESP32-S2 efuse support.
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config ESP32S2_TIMER0
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bool "64-bit Timer 0 (Group 0 Timer 0)"
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default n
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@@ -42,6 +42,12 @@ ifeq ($(CONFIG_ESP32S2_UART),y)
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CHIP_CSRCS += esp32s2_serial.c
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endif
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ifeq ($(CONFIG_ESP32S2_EFUSE),y)
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CHIP_CSRCS += esp32s2_efuse.c
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CHIP_CSRCS += esp32s2_efuse_table.c
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CHIP_CSRCS += esp32s2_efuse_lowerhalf.c
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endif
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ifeq ($(CONFIG_ESP32S2_RNG),y)
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CHIP_CSRCS += esp32s2_rng.c
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endif
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,189 @@
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/****************************************************************************
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* arch/xtensa/src/esp32s2/esp32s2_efuse.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_XTENSA_SRC_ESP32S2_ESP32S2_EFUSE_H
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#define __ARCH_XTENSA_SRC_ESP32S2_ESP32S2_EFUSE_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/efuse/efuse.h>
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* Type of eFuse blocks for ESP32S2 */
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typedef enum
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{
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EFUSE_BLK0 = 0, /**< Number of eFuse BLOCK0. REPEAT_DATA */
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EFUSE_BLK1 = 1, /**< Number of eFuse BLOCK1. MAC_SPI_8M_SYS */
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EFUSE_BLK2 = 2, /**< Number of eFuse BLOCK2. SYS_DATA_PART1 */
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EFUSE_BLK_SYS_DATA_PART1 = 2, /**< Number of eFuse BLOCK2. SYS_DATA_PART1 */
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EFUSE_BLK3 = 3, /**< Number of eFuse BLOCK3. USER_DATA */
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EFUSE_BLK_USER_DATA = 3, /**< Number of eFuse BLOCK3. USER_DATA */
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EFUSE_BLK4 = 4, /**< Number of eFuse BLOCK4. KEY0 */
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EFUSE_BLK_KEY0 = 4, /**< Number of eFuse BLOCK4. KEY0 */
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EFUSE_BLK5 = 5, /**< Number of eFuse BLOCK5. KEY1 */
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EFUSE_BLK_KEY1 = 5, /**< Number of eFuse BLOCK5. KEY1 */
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EFUSE_BLK6 = 6, /**< Number of eFuse BLOCK6. KEY2 */
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EFUSE_BLK_KEY2 = 6, /**< Number of eFuse BLOCK6. KEY2 */
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EFUSE_BLK7 = 7, /**< Number of eFuse BLOCK7. KEY3 */
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EFUSE_BLK_KEY3 = 7, /**< Number of eFuse BLOCK7. KEY3 */
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EFUSE_BLK8 = 8, /**< Number of eFuse BLOCK8. KEY4 */
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EFUSE_BLK_KEY4 = 8, /**< Number of eFuse BLOCK8. KEY4 */
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EFUSE_BLK9 = 9, /**< Number of eFuse BLOCK9. KEY5 */
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EFUSE_BLK_KEY5 = 9, /**< Number of eFuse BLOCK9. KEY5 */
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EFUSE_BLK_KEY_MAX = 10,
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EFUSE_BLK10 = 10, /**< Number of eFuse BLOCK10. SYS_DATA_PART2 */
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EFUSE_BLK_SYS_DATA_PART2 = 10, /**< Number of eFuse BLOCK10. SYS_DATA_PART2 */
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EFUSE_BLK_MAX
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} esp_efuse_block_t;
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/****************************************************************************
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* Name: efuse_func_proc_t
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*
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* Description:
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* This is type of function that will handle the efuse field register.
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*
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* Input Parameters:
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* num_reg - The register number in the block.
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* bit_start - Start bit in the register.
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* bit_count - The number of bits used in the register.
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* arr - A pointer to an array or variable.
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* bits_counter - Counter bits.
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise -1 (ERROR).
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*
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****************************************************************************/
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typedef int (*efuse_func_proc_t) (uint32_t num_reg,
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int bit_start,
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int bit_count,
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void *arr, int *bits_counter);
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/****************************************************************************
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* Public Functions Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: esp32s2_efuse_read_field
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*
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* Description:
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* Read value from EFUSE, writing it into an array.
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*
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* Input Parameters:
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* field - A pointer to describing the fields of efuse
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* dst - A pointer to array that contains the data for reading
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* dst_size_bits - The number of bits required to read
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise -1 (ERROR).
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*
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****************************************************************************/
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int esp32s2_efuse_read_field(const efuse_desc_t *field[], void *dst,
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size_t dst_size_bits);
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/****************************************************************************
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* Name: esp32s2_efuse_write_field
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*
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* Description:
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* Write array to EFUSE.
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*
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* Input Parameters:
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* field - A pointer to describing the fields of efuse
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* src - A pointer to array that contains the data for writing
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* src_size_bits - The number of bits required to write
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise -1 (ERROR).
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*
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****************************************************************************/
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int esp32s2_efuse_write_field(const efuse_desc_t *field[],
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const void *src, size_t src_size_bits);
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/****************************************************************************
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* Name: esp32s2_efuse_burn_efuses
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*
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* Description:
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* Burn values written to the efuse write registers.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None.
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*
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****************************************************************************/
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void esp32s2_efuse_burn_efuses(void);
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/****************************************************************************
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* Name: esp32s2_efuse_initialize
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*
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* Description:
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* Initialize the efuse driver. The efuse is initialized
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* and registered as 'devpath'.
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*
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* Input Parameters:
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* devpath - The full path to the efuse device.
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* This should be of the form /dev/efuse
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise -1 (ERROR).
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*
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****************************************************************************/
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int esp32s2_efuse_initialize(const char *devpath);
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#ifdef __cplusplus
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}
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#endif
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#undef EXTERN
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_XTENSA_SRC_ESP32S2_ESP32S2_EFUSE_H */
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@@ -0,0 +1,241 @@
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/****************************************************************************
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* arch/xtensa/src/esp32s2/esp32s2_efuse_lowerhalf.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdlib.h>
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#include <debug.h>
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#include <assert.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/efuse/efuse.h>
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#include "hardware/esp32s2_soc.h"
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#include "esp32s2_efuse.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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struct esp32s2_efuse_lowerhalf_s
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{
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const struct efuse_ops_s *ops; /* Lower half operations */
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void *upper; /* Pointer to efuse_upperhalf_s */
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};
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/****************************************************************************
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* Private Functions Prototypes
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****************************************************************************/
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/* "Lower half" driver methods */
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static int esp32s2_efuse_lowerhalf_read(struct efuse_lowerhalf_s *lower,
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const efuse_desc_t *field[],
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uint8_t *data, size_t bits_len);
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static int esp32s2_efuse_lowerhalf_write(struct efuse_lowerhalf_s *lower,
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const efuse_desc_t *field[],
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const uint8_t *data,
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size_t bits_len);
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static int esp32s2_efuse_lowerhalf_ioctl(struct efuse_lowerhalf_s *lower,
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int cmd, unsigned long arg);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* "Lower half" driver methods */
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static const struct efuse_ops_s g_esp32s2_efuse_ops =
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{
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.read_field = esp32s2_efuse_lowerhalf_read,
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.write_field = esp32s2_efuse_lowerhalf_write,
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.ioctl = esp32s2_efuse_lowerhalf_ioctl,
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};
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/* EFUSE lower-half */
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static struct esp32s2_efuse_lowerhalf_s g_esp32s2_efuse_lowerhalf =
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{
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.ops = &g_esp32s2_efuse_ops,
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.upper = NULL,
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};
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/****************************************************************************
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* Private functions
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****************************************************************************/
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/****************************************************************************
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* Name: esp32s2_efuse_lowerhalf_read
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*
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* Description:
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* Read value from EFUSE, writing it into an array.
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*
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* Input Parameters:
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* lower - A pointer the publicly visible representation of
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* the "lower-half" driver state structure
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* field - A pointer to describing the fields of efuse
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* dst - A pointer to array that contains the data for reading
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* bits_len - The number of bits required to read
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise -1 (ERROR).
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*
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****************************************************************************/
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static int esp32s2_efuse_lowerhalf_read(struct efuse_lowerhalf_s *lower,
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const efuse_desc_t *field[],
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uint8_t *data, size_t bits_len)
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{
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int ret = OK;
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/* Read the requested field */
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ret = esp32s2_efuse_read_field(field, data, bits_len);
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return ret;
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}
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/****************************************************************************
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* Name: esp32s2_efuse_lowerhalf_write
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*
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* Description:
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* Write array to EFUSE.
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*
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* Input Parameters:
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* lower - A pointer the publicly visible representation of
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* the "lower-half" driver state structure
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* field - A pointer to describing the fields of efuse
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* data - A pointer to array that contains the data for writing
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* bits_len - The number of bits required to write
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise -1 (ERROR).
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*
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****************************************************************************/
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static int esp32s2_efuse_lowerhalf_write(struct efuse_lowerhalf_s *lower,
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const efuse_desc_t *field[],
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const uint8_t *data,
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size_t bits_len)
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{
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irqstate_t flags;
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int ret = OK;
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flags = enter_critical_section();
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/* Write the blob data to the field */
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ret = esp32s2_efuse_write_field(field, data, bits_len);
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/* Burn the EFUSEs */
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esp32s2_efuse_burn_efuses();
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leave_critical_section(flags);
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return ret;
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}
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/****************************************************************************
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* Name: esp32s2_efuse_lowerhalf_ioctl
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*
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* Description:
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* Initialize the efuse driver. The efuse is initialized
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* and registered as 'devpath'.
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*
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* Input Parameters:
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* lower - A pointer the publicly visible representation of
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* the "lower-half" driver state structure
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* cmd - The ioctl command value
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* arg - The optional argument that accompanies the 'cmd'
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise -1 (ERROR).
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*
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****************************************************************************/
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static int esp32s2_efuse_lowerhalf_ioctl(struct efuse_lowerhalf_s *lower,
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int cmd, unsigned long arg)
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{
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int ret = OK;
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switch (cmd)
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{
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/* We don't have proprietary EFUSE ioctls */
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default:
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{
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minfo("Unrecognized cmd: %d\n", cmd);
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ret = -ENOTTY;
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}
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break;
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}
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return ret;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: esp32s2_efuse_initialize
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*
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* Description:
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* Initialize the efuse driver. The efuse is initialized
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* and registered as 'devpath'.
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*
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* Input Parameters:
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* devpath - The full path to the efuse device.
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* This should be of the form /dev/efuse
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise -1 (ERROR).
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*
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****************************************************************************/
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int esp32s2_efuse_initialize(const char *devpath)
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{
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struct esp32s2_efuse_lowerhalf_s *lower = NULL;
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int ret = OK;
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DEBUGASSERT(devpath != NULL);
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lower = &g_esp32s2_efuse_lowerhalf;
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/* Register the efuse upper driver */
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lower->upper = efuse_register(devpath,
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(struct efuse_lowerhalf_s *)lower);
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if (lower->upper == NULL)
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{
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/* The actual cause of the failure may have been a failure to allocate
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* perhaps a failure to register the efuser driver (such as if the
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* 'devpath' were not unique). We know here but we return EEXIST to
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* indicate the failure (implying the non-unique devpath).
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*/
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ret = -EEXIST;
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}
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return ret;
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}
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File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user