sw/device/tests/kelvin/kelvin_hello_world.c

/*
 * Copyright 2023 Google LLC
 *
 * 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.
 */

// A Simple kelvin program.

#include <stddef.h>
#include <stdint.h>

const uint32_t kDataInput = 0x100000;
const uint32_t kDataSize = 0x1000;

int main(int argc, char *argv[]) {
  uint32_t *data = (uint32_t *)kDataInput;
  for (uint32_t i = 0; i < kDataSize / sizeof(uint32_t); ++i) {
    data[i] += 1;
  }
  asm volatile(".word 0x26000077");  // flushall
  return 0;
}