diff options
Diffstat (limited to 'src/soc/mediatek/mt8183/sspm.c')
-rw-r--r-- | src/soc/mediatek/mt8183/sspm.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8183/sspm.c b/src/soc/mediatek/mt8183/sspm.c new file mode 100644 index 0000000000..559034eacb --- /dev/null +++ b/src/soc/mediatek/mt8183/sspm.c @@ -0,0 +1,42 @@ +/* + * 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); +} |