| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2012 Chromium OS Authors |
| * |
| * 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 |
| */ |
| |
| /* mailbox 0: header */ |
| typedef struct { |
| u8 signature[16]; |
| u32 size; |
| u32 version; |
| u8 sbios_version[32]; |
| u8 vbios_version[16]; |
| u8 driver_version[16]; |
| u32 mailboxes; |
| u8 reserved[164]; |
| } __attribute__((packed)) opregion_header_t; |
| |
| #define IGD_OPREGION_SIGNATURE "IntelGraphicsMem" |
| #define IGD_OPREGION_VERSION 2 |
| |
| #define IGD_MBOX1 (1 << 0) |
| #define IGD_MBOX2 (1 << 1) |
| #define IGD_MBOX3 (1 << 2) |
| #define IGD_MBOX4 (1 << 3) |
| #define IGD_MBOX5 (1 << 4) |
| |
| #define MAILBOXES_MOBILE (IGD_MBOX1 | IGD_MBOX2 | IGD_MBOX3 | \ |
| IGD_MBOX4 | IGD_MBOX5) |
| #define MAILBOXES_DESKTOP (IGD_MBOX2 | IGD_MBOX4) |
| |
| #define SBIOS_VERSION_SIZE 32 |
| |
| /* mailbox 1: public acpi methods */ |
| typedef struct { |
| u32 drdy; |
| u32 csts; |
| u32 cevt; |
| u8 reserved1[20]; |
| u32 didl[8]; |
| u32 cpdl[8]; |
| u32 cadl[8]; |
| u32 nadl[8]; |
| u32 aslp; |
| u32 tidx; |
| u32 chpd; |
| u32 clid; |
| u32 cdck; |
| u32 sxsw; |
| u32 evts; |
| u32 cnot; |
| u32 nrdy; |
| u8 reserved2[60]; |
| } __attribute__((packed)) opregion_mailbox1_t; |
| |
| /* mailbox 2: software sci interface */ |
| typedef struct { |
| u32 scic; |
| u32 parm; |
| u32 dslp; |
| u8 reserved[244]; |
| } __attribute__((packed)) opregion_mailbox2_t; |
| |
| /* mailbox 3: power conservation */ |
| typedef struct { |
| u32 ardy; |
| u32 aslc; |
| u32 tche; |
| u32 alsi; |
| u32 bclp; |
| u32 pfit; |
| u32 cblv; |
| u16 bclm[20]; |
| u32 cpfm; |
| u32 epfm; |
| u8 plut[74]; |
| u32 pfmb; |
| u32 ccdv; |
| u32 pcft; |
| u8 reserved[94]; |
| } __attribute__((packed)) opregion_mailbox3_t; |
| |
| #define IGD_BACKLIGHT_BRIGHTNESS 0xff |
| #define IGD_INITIAL_BRIGHTNESS 0x64 |
| |
| #define IGD_FIELD_VALID (1 << 31) |
| #define IGD_WORD_FIELD_VALID (1 << 15) |
| #define IGD_PFIT_STRETCH 6 |
| |
| /* mailbox 4: vbt */ |
| typedef struct { |
| u8 gvd1[7168]; |
| } __attribute__((packed)) opregion_vbt_t; |
| |
| /* IGD OpRegion */ |
| typedef struct { |
| opregion_header_t header; |
| opregion_mailbox1_t mailbox1; |
| opregion_mailbox2_t mailbox2; |
| opregion_mailbox3_t mailbox3; |
| opregion_vbt_t vbt; |
| } __attribute__((packed)) igd_opregion_t; |
| |
| /* Intel Video BIOS (Option ROM) */ |
| typedef struct { |
| u16 signature; |
| u8 size; |
| u8 reserved[21]; |
| u16 pcir_offset; |
| u16 vbt_offset; |
| } __attribute__((packed)) optionrom_header_t; |
| |
| #define OPROM_SIGNATURE 0xaa55 |
| |
| typedef struct { |
| u32 signature; |
| u16 vendor; |
| u16 device; |
| u16 reserved1; |
| u16 length; |
| u8 revision; |
| u8 classcode[3]; |
| u16 imagelength; |
| u16 coderevision; |
| u8 codetype; |
| u8 indicator; |
| u16 reserved2; |
| } __attribute__((packed)) optionrom_pcir_t; |
| |
| typedef struct { |
| u8 hdr_signature[20]; |
| u16 hdr_version; |
| u16 hdr_size; |
| u16 hdr_vbt_size; |
| u8 hdr_vbt_checksum; |
| u8 hdr_reserved; |
| u32 hdr_vbt_datablock; |
| u32 hdr_aim[4]; |
| u8 datahdr_signature[16]; |
| u16 datahdr_version; |
| u16 datahdr_size; |
| u16 datahdr_datablocksize; |
| u8 coreblock_id; |
| u16 coreblock_size; |
| u16 coreblock_biossize; |
| u8 coreblock_biostype; |
| u8 coreblock_releasestatus; |
| u8 coreblock_hwsupported; |
| u8 coreblock_integratedhw; |
| u8 coreblock_biosbuild[4]; |
| u8 coreblock_biossignon[155]; |
| } __attribute__((packed)) optionrom_vbt_t; |
| |
| #define VBT_SIGNATURE 0x54425624 |