build and link hello-world for esp32s2beta

components/spi_flash/esp32s2beta/flash_ops_esp32s2beta.c

@@ -0,0 +1,65 @@
+// Copyright 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.
+
+#include <string.h>
+#include <sys/param.h>
+
+#include "esp_spi_flash.h"
+#include "esp_spi_flash_chip.h"
+#include "cache_utils.h"
+#include "soc/system_reg.h"
+#include "soc/soc_memory_layout.h"
+#include "esp32s2beta/rom/spi_flash.h"
+#include "esp32s2beta/rom/cache.h"
+
+esp_rom_spiflash_result_t IRAM_ATTR spi_flash_write_encrypted_chip(size_t dest_addr, const void *src, size_t size)
+{
+    const spi_flash_guard_funcs_t *ops = spi_flash_guard_get();
+    esp_rom_spiflash_result_t rc;
+
+    if (!esp_ptr_internal(src)) {
+        uint8_t block[128]; // Need to buffer in RAM as we write
+        while (size > 0) {
+            size_t next_block = MIN(size, sizeof(block));
+            memcpy(block, src, next_block);
+
+            esp_rom_spiflash_result_t r = spi_flash_write_encrypted_chip(dest_addr, block, next_block);
+            if (r != ESP_ROM_SPIFLASH_RESULT_OK) {
+                return r;
+            }
+
+            size -= next_block;
+            dest_addr += next_block;
+            src = ((uint8_t *)src) + next_block;
+        }
+        bzero(block, sizeof(block));
+
+        return ESP_ROM_SPIFLASH_RESULT_OK;
+    }
+    else { // Already in internal memory
+        rc = spi_flash_unlock();
+        if (rc != ESP_ROM_SPIFLASH_RESULT_OK) {
+            return rc;
+        }
+
+        if (ops && ops->start) {
+            ops->start();
+        }
+        rc = SPI_Encrypt_Write(dest_addr, src, size);
+        if (ops && ops->end) {
+            ops->end();
+        }
+        return rc;
+    }
+}