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esp_hw_support: create esp_cpu

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Create a esp_cpu header that contains CPU-related functions and
utilities.
This commit is contained in:
Renz Bagaporo
2021-02-19 20:23:32 +08:00
parent 7e0e91bf76
commit 0f03f450ff
17 changed files with 162 additions and 122 deletions
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components/esp_hw_support/include/esp_cpu.h
+109
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@@ -0,0 +1,109 @@
// Copyright 2010-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _ESP_CPU_H
#define _ESP_CPU_H
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include "hal/cpu_hal.h"
#ifdef __cplusplus
extern "C" {
#endif
#define ESP_WATCHPOINT_LOAD 0x40000000
#define ESP_WATCHPOINT_STORE 0x80000000
#define ESP_WATCHPOINT_ACCESS 0xC0000000
typedef uint32_t esp_cpu_ccount_t;
/** @brief Read current stack pointer address
*
*/
static inline void *esp_cpu_get_sp(void)
{
return cpu_hal_get_sp();
}
/**
* @brief Stall CPU using RTC controller
* @param cpu_id ID of the CPU to stall (0 = PRO, 1 = APP)
*/
void esp_cpu_stall(int cpu_id);
/**
* @brief Un-stall CPU using RTC controller
* @param cpu_id ID of the CPU to un-stall (0 = PRO, 1 = APP)
*/
void esp_cpu_unstall(int cpu_id);
/**
* @brief Reset CPU using RTC controller
* @param cpu_id ID of the CPU to reset (0 = PRO, 1 = APP)
*/
void esp_cpu_reset(int cpu_id);
/**
* @brief Returns true if a JTAG debugger is attached to CPU
* OCD (on chip debug) port.
*
* @note If "Make exception and panic handlers JTAG/OCD aware"
* is disabled, this function always returns false.
*/
bool esp_cpu_in_ocd_debug_mode(void);
static inline esp_cpu_ccount_t esp_cpu_get_ccount(void)
{
return cpu_hal_get_cycle_count();
}
static inline void esp_cpu_set_ccount(esp_cpu_ccount_t val)
{
cpu_hal_set_cycle_count(val);
}
/**
* @brief Set a watchpoint to break/panic when a certain memory range is accessed.
*
* @param no Watchpoint number. On the ESP32, this can be 0 or 1.
* @param adr Base address to watch
* @param size Size of the region, starting at the base address, to watch. Must
* be one of 2^n, with n in [0..6].
* @param flags One of ESP_WATCHPOINT_* flags
*
* @return ESP_ERR_INVALID_ARG on invalid arg, ESP_OK otherwise
*
* @warning The ESP32 watchpoint hardware watches a region of bytes by effectively
* masking away the lower n bits for a region with size 2^n. If adr does
* not have zero for these lower n bits, you may not be watching the
* region you intended.
*/
esp_err_t esp_cpu_set_watchpoint(int no, void *adr, int size, int flags);
/**
* @brief Clear a watchpoint
*
* @param no Watchpoint to clear
*
*/
void esp_cpu_clear_watchpoint(int no);
#ifdef __cplusplus
}
#endif
#endif // _ESP_CPU_H
components/esp_hw_support/include/soc/cpu.h
+6 -57
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@@ -19,6 +19,8 @@
#include <stdbool.h>
#include <stddef.h>
#include "esp_cpu.h"
#if __XTENSA__
#include "xt_instr_macros.h"
// [refactor-todo] not actually needed in this header now,
@@ -29,59 +31,18 @@
#include "xtensa/config/specreg.h"
#endif
#include "hal/cpu_hal.h"
#ifdef __cplusplus
extern "C" {
#endif
/** @brief Read current stack pointer address
*
/** @brief Read current stack pointer address.
* Superseded by esp_cpu_get_sp in esp_cpu.h.
*/
static inline void *get_sp(void)
static inline __attribute__((deprecated)) void *get_sp(void)
{
return cpu_hal_get_sp();
return esp_cpu_get_sp();
}
/**
* @brief Stall CPU using RTC controller
* @param cpu_id ID of the CPU to stall (0 = PRO, 1 = APP)
*/
void esp_cpu_stall(int cpu_id);
/**
* @brief Un-stall CPU using RTC controller
* @param cpu_id ID of the CPU to un-stall (0 = PRO, 1 = APP)
*/
void esp_cpu_unstall(int cpu_id);
/**
* @brief Reset CPU using RTC controller
* @param cpu_id ID of the CPU to reset (0 = PRO, 1 = APP)
*/
void esp_cpu_reset(int cpu_id);
/**
* @brief Returns true if a JTAG debugger is attached to CPU
* OCD (on chip debug) port.
*
* @note If "Make exception and panic handlers JTAG/OCD aware"
* is disabled, this function always returns false.
*/
bool esp_cpu_in_ocd_debug_mode(void);
/**
* @brief Convert the PC register value to its true address
*
* The address of the current instruction is not stored as an exact uint32_t
* representation in PC register. This function will convert the value stored in
* the PC register to a uint32_t address.
*
* @param pc_raw The PC as stored in register format.
*
* @return Address in uint32_t format
*/
static inline uint32_t esp_cpu_process_stack_pc(uint32_t pc)
{
if (pc & 0x80000000) {
@@ -92,18 +53,6 @@ static inline uint32_t esp_cpu_process_stack_pc(uint32_t pc)
return pc - 3;
}
typedef uint32_t esp_cpu_ccount_t;
static inline esp_cpu_ccount_t esp_cpu_get_ccount(void)
{
return cpu_hal_get_cycle_count();
}
static inline void esp_cpu_set_ccount(esp_cpu_ccount_t val)
{
cpu_hal_set_cycle_count(val);
}
/**
* @brief Configure CPU to disable access to invalid memory regions
*