sw/device/cheriot/soundstream/spi.cc

/*
 * 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.
 */

/*
 * Barebones SPI Flash support for reading data from SPI at startup.
 */
#include "spi.h"

#include <fail-simulator-on-error.h>
#include <thread.h>

#include <debug.hh>

#include "hw/top_matcha/sw/autogen/top_matcha.h"
#include "sw/device/lib/spi_flash.h"

/// Expose debugging features unconditionally for this compartment.
using Debug = ConditionalDebug<false, "SPI">;

#include "compat.h"

typedef uint8_t spi_host_t[TOP_MATCHA_SPI_HOST0_SIZE_BYTES];
typedef uint8_t flash_ctrl_t[TOP_MATCHA_FLASH_CTRL_CORE_SIZE_BYTES];
typedef uint8_t otp_t[TOP_MATCHA_OTP_CTRL_CORE_SIZE_BYTES];

void spi_init(void) {
  Debug::log("spi_init: called from Thread {}", thread_id_get());
  CHECK_DIF_OK(
      spi_flash_init((uintptr_t)MMIO_CAPABILITY(spi_host_t, spi_host),
                     (uintptr_t)MMIO_CAPABILITY(flash_ctrl_t, flash_ctrl),
                     (uintptr_t)MMIO_CAPABILITY(otp_t, otp)));
}

void spi_load_file_from_tar(const char* filename, void* addr,
                            size_t max_mem_addr) {
  Debug::log("Load {} at {}, max {} ", filename, addr, max_mem_addr);
  CHECK_DIF_OK(load_file_from_tar(filename, addr, max_mem_addr));
}