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feat(l2mem): enable buffer mode for ahb burst access

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This commit is contained in:
morris 2025-02-26 11:30:50 +08:00
parent 099c5a8a69
commit 2cd87223a8
2 changed files with 37 additions and 0 deletions
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6
components/esp_system/port/cpu_start.c
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@ -58,6 +58,7 @@
#include "esp32c2/rom/secure_boot.h"
#elif CONFIG_IDF_TARGET_ESP32P4
#include "soc/hp_sys_clkrst_reg.h"
#include "hal/l2mem_ll.h"
#elif CONFIG_IDF_TARGET_ESP32H21
#include "esp_memprot.h"
#endif
@ -403,6 +404,11 @@ void IRAM_ATTR call_start_cpu0(void)
);
#endif
#if CONFIG_IDF_TARGET_ESP32P4
// enable the buffer mode before any AHB burst happens, that's why we do it here
l2mem_ll_enable_ahb_burst_buffer(true, true);
#endif
#if SOC_BRANCH_PREDICTOR_SUPPORTED
esp_cpu_branch_prediction_enable();
#endif

31
components/hal/esp32p4/include/hal/l2mem_ll.h Normal file
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@ -0,0 +1,31 @@
/*
* SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#include "soc/hp_system_struct.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Enable the burst buffer for L2 memory
*
* @note During AHB burst access to the L2MEM, in order to reduce the AHB request to the L2MEM arbiter,
* enabling the buffer mode can improve the performance.
* @note This function must be called before any AHB burst access to the L2MEM.
*/
static inline void l2mem_ll_enable_ahb_burst_buffer(bool en_read, bool en_write)
{
HP_SYSTEM.l2_mem_ahb_buffer_ctrl.l2_mem_ahb_rdbuffer_en = en_read;
HP_SYSTEM.l2_mem_ahb_buffer_ctrl.l2_mem_ahb_wrbuffer_en = en_write;
}
#ifdef __cplusplus
}
#endif