support.c

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
 
#include <stddef.h>
 
#include "sw/device/lib/arch/device.h"
#include "sw/device/lib/dif/dif_uart.h"
#include "sw/device/lib/runtime/print.h"
#include "sw/device/lib/testing/test_framework/check.h"
#include "sw/device/lib/testing/test_framework/status.h"
 
#include "hw/top_earlgrey/sw/autogen/top_earlgrey.h"
 
// These symbopls are provided by the riscv-compliance libraries.
extern void run_rvc_test(void);
extern volatile uint32_t begin_signature[];
extern volatile uint32_t end_signature[];
 
static dif_uart_t uart0;
 
int opentitan_compliance_main(int argc, char **argv) {
  CHECK_DIF_OK(dif_uart_init(
      mmio_region_from_addr(TOP_EARLGREY_UART0_BASE_ADDR), &uart0));
  CHECK_DIF_OK(
      dif_uart_configure(&uart0, (dif_uart_config_t){
                                     .baudrate = kUartBaudrate,
                                     .clk_freq_hz = kClockFreqPeripheralHz,
                                     .parity_enable = kDifToggleDisabled,
                                     .parity = kDifUartParityEven,
                                     .tx_enable = kDifToggleEnabled,
                                     .rx_enable = kDifToggleEnabled,
                                 }));
  base_uart_stdout(&uart0);
 
  run_rvc_test();
 
  ptrdiff_t size = end_signature - begin_signature;
  for (int i = 0; i < size; ++i) {
    base_printf("SIG: %08x\r\n", begin_signature[i]);
  }
 
  // Above values are checked for correctness externally post-simulation.
  test_status_set(kTestStatusPassed);
 
  // Unreachable code.
  return 0;
}