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Diffstat (limited to 'src/ec/google/common/mec.h')
-rw-r--r-- | src/ec/google/common/mec.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/ec/google/common/mec.h b/src/ec/google/common/mec.h new file mode 100644 index 0000000000..3452bada7a --- /dev/null +++ b/src/ec/google/common/mec.h @@ -0,0 +1,43 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Google LLC + * + * 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. + */ + +#ifndef EC_GOOGLE_COMMON_MEC_H +#define EC_GOOGLE_COMMON_MEC_H + +#include <stddef.h> +#include <stdint.h> + +/* Indicate read or write from MEC IO region */ +enum mec_io_type { + MEC_IO_READ, + MEC_IO_WRITE +}; + +/* + * mec_io_bytes - Read / write bytes to MEC EMI port + * + * @type: Indicate read or write operation + * @base: Base address for MEC EMI region + * @offset: Base read / write address + * @buffer: Destination / source buffer + * @size: Number of bytes to read / write + * + * @returns 8-bit checksum of all bytes read or written + */ + +uint8_t mec_io_bytes(enum mec_io_type type, uint16_t base, + uint16_t offset, void *buffer, size_t size); + +#endif /* EC_GOOGLE_COMMON_MEC_H */ |