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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
#ifndef ELOG_INTERNAL_H_
#define ELOG_INTERNAL_H_
/* ELOG header */
struct elog_header {
u32 magic;
u8 version;
u8 header_size;
u8 reserved[2];
} __attribute__ ((packed));
/* ELOG related constants */
#define ELOG_SIGNATURE 0x474f4c45 /* 'ELOG' */
#define ELOG_VERSION 1
/* SMBIOS event log header */
struct event_header {
u8 type;
u8 length;
u8 year;
u8 month;
u8 day;
u8 hour;
u8 minute;
u8 second;
} __attribute__ ((packed));
/* SMBIOS Type 15 related constants */
#define ELOG_HEADER_TYPE_OEM 0x88
typedef enum elog_area_state {
ELOG_AREA_UNDEFINED, /* Initial boot strap state */
ELOG_AREA_EMPTY, /* Entire area is empty */
ELOG_AREA_HAS_CONTENT, /* Area has some content */
} elog_area_state;
typedef enum elog_header_state {
ELOG_HEADER_INVALID,
ELOG_HEADER_VALID,
} elog_header_state;
typedef enum elog_event_buffer_state {
ELOG_EVENT_BUFFER_OK,
ELOG_EVENT_BUFFER_CORRUPTED,
} elog_event_buffer_state;
/*
* Internal handler for event log buffers
*/
struct elog_descriptor {
elog_area_state area_state;
elog_header_state header_state;
elog_event_buffer_state event_buffer_state;
void *backing_store;
u8 *data;
u32 flash_base;
u16 total_size;
u16 data_size;
u16 next_event_offset;
u16 last_event_offset;
u16 last_event_size;
u16 event_count;
};
#endif /* ELOG_INTERNAL_H_ */
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