sw/device/lib/arch/device_sim_dv.c

/*
 * Copyright 2023 Google LLC
 * Copyright lowRISC contributors
 *
 * 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 <stdbool.h>

#include "sw/device/lib/arch/device.h"

/**
 * Device-specific symbol definitions for the Verilator device.
 */

const device_type_t kDeviceType = kDeviceSimDV;

// TODO: DV testbench completely randomizes these. Need to add code to
// retrieve these from a preloaded memory location set by the testbench.

const uint64_t kClockFreqCpuMhz = 96;

const uint64_t kClockFreqCpuHz = kClockFreqCpuMhz * 1000 * 1000;

uint64_t to_cpu_cycles(uint64_t usec) { return usec * kClockFreqCpuMhz; }

const uint64_t kClockFreqHiSpeedPeripheralHz = 96 * 1000 * 1000;  // 96MHz

const uint64_t kClockFreqPeripheralHz = 24 * 1000 * 1000;  // 24MHz

const uint64_t kClockFreqUsbHz = 48 * 1000 * 1000;  // 48MHz

const uint64_t kClockFreqAonHz = 200 * 1000;  // 200kHz

const uint64_t kClockFreqSpiFlashHz = 5 * 1000 * 1000; // 5MHz
const uint64_t kClockFreqSpiDisplayHz = 5 * 1000 * 1000; // 5MHz
const uint64_t kClockFreqSpiPassthroughHz = 5 * 1000 * 1000; // 5MHz

const uint64_t kUartBaudrate = 1 * 1000 * 1000;  // 1Mbps

const uint32_t kUartNCOValue =
    CALCULATE_UART_NCO(kUartBaudrate, kClockFreqPeripheralHz);

const uint32_t kUartTxFifoCpuCycles =
    CALCULATE_UART_TX_FIFO_CPU_CYCLES(kUartBaudrate, kClockFreqCpuHz);

const uint32_t kAstCheckPollCpuCycles =
    CALCULATE_AST_CHECK_POLL_CPU_CYCLES(kClockFreqCpuHz);

// Defined in `hw/top_earlgrey/dv/env/chip_env_pkg.sv`
const uintptr_t kDeviceTestStatusAddress = 0x503ffff8;

// Defined in `hw/top_earlgrey/dv/env/chip_env_pkg.sv`
const uintptr_t kDeviceLogBypassUartAddress = 0x503ffffc;

const bool kJitterEnabled = false;

void device_fpga_version_print(void) {}