zephyr/soc/espressif/esp32s3/soc_cache.c

/*
 * Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include "soc.h"

#ifndef CONFIG_MCUBOOT
extern int _instruction_reserved_start;
extern int _instruction_reserved_end;
extern int _rodata_reserved_start;
extern int _rodata_reserved_end;

extern void rom_config_data_cache_mode(uint32_t cfg_cache_size, uint8_t cfg_cache_ways,
				       uint8_t cfg_cache_line_size);
extern void rom_config_instruction_cache_mode(uint32_t cfg_cache_size, uint8_t cfg_cache_ways,
					      uint8_t cfg_cache_line_size);
extern void Cache_Set_IDROM_MMU_Info(uint32_t instr_page_num, uint32_t rodata_page_num,
				     uint32_t rodata_start, uint32_t rodata_end, int i_off,
				     int ro_off);
extern void Cache_Enable_ICache(uint32_t autoload);

void IRAM_ATTR esp_config_instruction_cache_mode(void)
{
	rom_config_instruction_cache_mode(CONFIG_ESP32S3_INSTRUCTION_CACHE_SIZE,
					  CONFIG_ESP32S3_ICACHE_ASSOCIATED_WAYS,
					  CONFIG_ESP32S3_INSTRUCTION_CACHE_LINE_SIZE);
}

void IRAM_ATTR esp_config_data_cache_mode(void)
{
	Cache_Suspend_DCache();
	rom_config_data_cache_mode(CONFIG_ESP32S3_DATA_CACHE_SIZE,
				   CONFIG_ESP32S3_DCACHE_ASSOCIATED_WAYS,
				   CONFIG_ESP32S3_DATA_CACHE_LINE_SIZE);
	Cache_Resume_DCache(0);

	/* Configure the Cache MMU size for instruction and rodata in flash. */
	uint32_t _instruction_size =
		(uint32_t)&_instruction_reserved_end - (uint32_t)&_instruction_reserved_start;
	uint32_t cache_mmu_irom_size =
		((_instruction_size + CONFIG_MMU_PAGE_SIZE - 1) / CONFIG_MMU_PAGE_SIZE) *
		sizeof(uint32_t);
	uint32_t _rodata_size = (uint32_t)&_rodata_reserved_end - (uint32_t)&_rodata_reserved_start;
	uint32_t cache_mmu_drom_size =
		((_rodata_size + CONFIG_MMU_PAGE_SIZE - 1) / CONFIG_MMU_PAGE_SIZE) *
		sizeof(uint32_t);

	Cache_Set_IDROM_MMU_Size(cache_mmu_irom_size, CACHE_DROM_MMU_MAX_END - cache_mmu_irom_size);

	int s_instr_flash2spiram_off = 0;
	int s_rodata_flash2spiram_off = 0;
	Cache_Set_IDROM_MMU_Info(cache_mmu_irom_size / sizeof(uint32_t),
				 cache_mmu_drom_size / sizeof(uint32_t),
				 (uint32_t)&_rodata_reserved_start, (uint32_t)&_rodata_reserved_end,
				 s_instr_flash2spiram_off, s_rodata_flash2spiram_off);
}
#endif /* CONFIG_MCUBOOT */