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/* SPDX-License-Identifier: GPL-2.0-or-later */
/***************************************************************************
* Espressif chips common target API for OpenOCD *
* Copyright (C) 2021 Espressif Systems Ltd. *
***************************************************************************/
#ifndef OPENOCD_TARGET_ESP_H
#define OPENOCD_TARGET_ESP_H
#include <stdint.h>
#include <helper/bits.h>
/* must be in sync with ESP-IDF version */
/** Size of the pre-compiled target buffer for stub trampoline.
* @note Must be in sync with ESP-IDF version */
#define ESP_DBG_STUBS_CODE_BUF_SIZE 32 /* TODO: move this info to esp_dbg_stubs_desc */
/** Size of the pre-compiled target buffer for stack.
* @note Must be in sync with ESP-IDF version */
#define ESP_DBG_STUBS_STACK_MIN_SIZE 2048/* TODO: move this info to esp_dbg_stubs_desc */
/**
* Debug stubs table entries IDs
*
* @note Must be in sync with ESP-IDF version
*/
enum esp_dbg_stub_id {
ESP_DBG_STUB_ENTRY_MAGIC_NUM,
ESP_DBG_STUB_TABLE_SIZE,
ESP_DBG_STUB_TABLE_START,
ESP_DBG_STUB_DESC = ESP_DBG_STUB_TABLE_START, /*< Stubs descriptor ID */
ESP_DBG_STUB_ENTRY_FIRST,
ESP_DBG_STUB_ENTRY_GCOV = ESP_DBG_STUB_ENTRY_FIRST, /*< GCOV stub ID */
ESP_DBG_STUB_CAPABILITIES,
/* add new stub entries here */
ESP_DBG_STUB_ENTRY_MAX,
};
#define ESP_DBG_STUB_MAGIC_NUM_VAL 0xFEEDBEEF
#define ESP_DBG_STUB_CAP_GCOV_THREAD BIT(0)
/**
* Debug stubs descriptor. ID: ESP_DBG_STUB_DESC
*
* @note Must be in sync with ESP-IDF version
*/
struct esp_dbg_stubs_desc {
/** Address of pre-compiled target buffer for stub trampoline.
* Size of the buffer is ESP_DBG_STUBS_CODE_BUF_SIZE
*/
uint32_t tramp_addr;
/** Pre-compiled target buffer's addr for stack. The size of the buffer is ESP_DBG_STUBS_STACK_MIN_SIZE.
* Target has the buffer which is used for the stack of onboard algorithms.
* If stack size required by algorithm exceeds ESP_DBG_STUBS_STACK_MIN_SIZE,
* it should be allocated using onboard function pointed by 'data_alloc' and
* freed by 'data_free'. They fit to the minimal stack. See below.
*/
uint32_t min_stack_addr;
/** Address of malloc-like function to allocate buffer on target. */
uint32_t data_alloc;
/** Address of free-like function to free buffer allocated with data_alloc. */
uint32_t data_free;
};
/**
* Debug stubs info.
*/
struct esp_dbg_stubs {
/** Address. */
uint32_t base;
/** Table contents. */
uint32_t entries[ESP_DBG_STUB_ENTRY_MAX];
/** Number of table entries. */
uint32_t entries_count;
/** Debug stubs decsriptor. */
struct esp_dbg_stubs_desc desc;
};
struct esp_common {
const struct esp_algorithm_hw *algo_hw;
struct esp_dbg_stubs dbg_stubs;
};
int esp_common_init(struct esp_common *esp, const struct esp_algorithm_hw *algo_hw);
int esp_dbgstubs_table_read(struct target *target, struct esp_dbg_stubs *dbg_stubs);
#endif /* OPENOCD_TARGET_ESP_H */