coreboot/src/soc/mediatek/mt8183/sspm.c

43 lines
1.2 KiB
C

/*
* This file is part of the coreboot project.
*
* Copyright 2019 MediaTek Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/barrier.h>
#include <cbfs.h>
#include <console/console.h>
#include <arch/mmio.h>
#include <soc/sspm.h>
#include <string.h>
#define BUF_SIZE (64 * KiB)
static uint8_t sspm_bin[BUF_SIZE] __aligned(8);
void sspm_init(void)
{
const char *file_name = "sspm.bin";
size_t fw_size = cbfs_boot_load_file(file_name,
sspm_bin,
sizeof(sspm_bin),
CBFS_TYPE_RAW);
if (fw_size == 0)
die("SSPM file :sspm.bin not found.");
memcpy((void *)SSPM_SRAM_BASE, sspm_bin, fw_size);
/* Memory barrier to ensure that all fw code is loaded
before we release the reset pin. */
mb();
write32(&mt8183_sspm->sw_rstn, 0x1);
}