diff options
| author | Stefan Reinauer <stepan@coresystems.de> | 2009-04-22 07:23:00 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2009-04-22 07:23:00 +0000 |
| commit | b5ab323a4036d86654c562b957d12f4dd4789bde (patch) | |
| tree | 6c57ff53e678efc73be10e532ceb2d5f0b56cb4f /util/ectool/ec.h | |
| parent | 7e16bf3a5511b83a28769f3ff3622b3ca5aadcab (diff) | |
A small utility to dump the RAM of a laptop's Embedded/Environmental
Controller. Nothing fancy, does not know any laptops, EC types, or what
the values mean. It just dumps them. For the dump method, have a look at
the ACPI 3.0b spec.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4163 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/ectool/ec.h')
| -rw-r--r-- | util/ectool/ec.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/util/ectool/ec.h b/util/ectool/ec.h new file mode 100644 index 0000000000..dde1ba313a --- /dev/null +++ b/util/ectool/ec.h @@ -0,0 +1,49 @@ +/* + * This file is part of the ectool project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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 _EC_H +#define _EC_H +#include <stdint.h> +#define EC_DATA 0x62 +#define EC_SC 0x66 + +/* EC_SC input */ +#define EC_SMI_EVT (1 << 6) // 1: SMI event pending +#define EC_SCI_EVT (1 << 5) // 1: SCI event pending +#define EC_BURST (1 << 4) // controller is in burst mode +#define EC_CMD (1 << 3) // 1: byte in data register is command + // 0: byte in data register is data +#define EC_IBF (1 << 1) // 1: input buffer full (data ready for ec) +#define EC_OBF (1 << 0) // 1: output buffer full (data ready for host) +/* EC_SC output */ +#define RD_EC 0x80 // Read Embedded Controller +#define WR_EC 0x81 // Write Embedded Controller +#define BE_EC 0x82 // Burst Enable Embedded Controller +#define BD_EC 0x83 // Burst Disable Embedded Controller +#define QR_EC 0x84 // Query Embedded Controller + +int send_ec_command(uint8_t command); +int send_ec_data(uint8_t data); +int send_ec_data_nowait(uint8_t data); +uint8_t recv_ec_data(void); +uint8_t ec_read(uint8_t addr); +#endif + |