sw/device/lib/arch/device_smc_fpga_nexus.c

// Copyright 2022 Google LLC.
// Copyright lowRISC contributors.
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0

#include <assert.h>
#include <stdbool.h>

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

/**
 * @file
 * @brief Device-specific symbol definitions for the Nexus SMC device.
 */

const device_type_t kDeviceType = kDeviceFpgaNexus;

// 10 MHz
const uint64_t kClockFreqCpuMhz = 10;

const uint64_t kClockFreqCpuHz = kClockFreqCpuMhz * 1000 * 1000;

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

const uint64_t kClockFreqPeripheralHz = 25 * 100 * 1000;  // 2.5MHz

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

const uint64_t kClockFreqAonHz = 250 * 1000;  // 250kHz

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 = 115200;

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);

const uintptr_t kDeviceTestStatusAddress = 0x0;

const uintptr_t kDeviceLogBypassUartAddress = 0;

const bool kJitterEnabled = false;