ulp: Added ULP RISC-V support for esp32s3

This commit adds support for ULP RISC-V for esp32s3. Signed-off-by: Sudeep Mohanty <sudeep.mohanty@espressif.com>
2021-12-23 11:42:47 +05:30
parent 90ad86e0d8
commit 2ed15d8b1e
27 changed files with 408 additions and 168 deletions
@@ -0,0 +1,43 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include "esp_err.h"
+#include "ulp_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Run the program loaded into RTC memory
+ * @return  ESP_OK on success
+ */
+esp_err_t ulp_riscv_run(void);
+
+/**
+ * @brief Load ULP-RISC-V program binary into RTC memory
+ *
+ * Different than ULP FSM, the binary program has no special format, it is the ELF
+ * file generated by RISC-V toolchain converted to binary format using objcopy.
+ *
+ * Linker script in components/ulp/ld/esp32s3.ulp.riscv.ld produces ELF files which
+ * correspond to this format. This linker script produces binaries with load_addr == 0.
+ *
+ * @param program_binary pointer to program binary
+ * @param program_size_bytes size of the program binary
+ * @return
+ *      - ESP_OK on success
+ *      - ESP_ERR_INVALID_SIZE if program_size_bytes is more than 8KiB
+ */
+esp_err_t ulp_riscv_load_binary(const uint8_t* program_binary, size_t program_size_bytes);
+
+#ifdef __cplusplus
+}
+#endif
@@ -1,20 +1,12 @@
-// Copyright 2016-2018 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.
+/*
+ * SPDX-FileCopyrightText: 2016-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #pragma once

-/* This file contains definitions that are common between esp32/ulp.h
-   and esp32s2/ulp.h
+/* This file contains definitions that are common between esp32/ulp.h,
+   esp32s2/ulp.h and esp32s3/ulp.h
 */

 #ifdef __cplusplus