src/include/cpu/x86/smm.h

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2008-2009 coresystems GmbH
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  18  */
  19
  20
  21 /* AMD64 SMM State-Save Area
  22  * starts @ 0x7e00
  23  */
  24 typedef struct {
  25         u16     es_selector;
  26         u16     es_attributes;
  27         u32     es_limit;
  28         u64     es_base;
  29
  30         u16     cs_selector;
  31         u16     cs_attributcs;
  32         u32     cs_limit;
  33         u64     cs_base;
  34
  35         u16     ss_selector;
  36         u16     ss_attributss;
  37         u32     ss_limit;
  38         u64     ss_base;
  39
  40         u16     ds_selector;
  41         u16     ds_attributds;
  42         u32     ds_limit;
  43         u64     ds_base;
  44
  45         u16     fs_selector;
  46         u16     fs_attributfs;
  47         u32     fs_limit;
  48         u64     fs_base;
  49
  50         u16     gs_selector;
  51         u16     gs_attributgs;
  52         u32     gs_limit;
  53         u64     gs_base;
  54
  55         u8      reserved0[4];
  56         u16     gdtr_limit;
  57         u8      reserved1[2];
  58         u64     gdtr_base;
  59
  60         u16     ldtr_selector;
  61         u16     ldtr_attributes;
  62         u32     ldtr_limit;
  63         u64     ldtr_base;
  64
  65         u8      reserved2[4];
  66         u16     idtr_limit;
  67         u8      reserved3[2];
  68         u64     idtr_base;
  69
  70         u16     tr_selector;
  71         u16     tr_attributes;
  72         u32     tr_limit;
  73         u64     tr_base;
  74
  75         u8      reserved4[40];
  76
  77         u8      io_restart;
  78         u8      autohalt_restart;
  79
  80         u8      reserved5[6];
  81
  82         u64     efer;
  83
  84         u8      reserved6[36];
  85
  86         u32     smm_revision;
  87         u32     smbase;
  88
  89         u8      reserved7[68];
  90
  91         u64     cr4;
  92         u64     cr3;
  93         u64     cr0;
  94         u64     dr7;
  95         u64     dr6;
  96
  97         u64     rflags;
  98         u64     rip;
  99         u64     r15;
 100         u64     r14;
 101         u64     r13;
 102         u64     r12;
 103         u64     r11;
 104         u64     r10;
 105         u64     r9;
 106         u64     r8;
 107
 108         u64     rdi;
 109         u64     rsi;
 110         u64     rpb;
 111         u64     rsp;
 112         u64     rbx;
 113         u64     rdx;
 114         u64     rcx;
 115         u64     rax;
 116 } __attribute__((packed)) amd64_smm_state_save_area_t;
 117
 118
 119 /* Intel Core 2 (EM64T) SMM State-Save Area
 120  * starts @ 0x7d00
 121  */
 122 typedef struct {
 123         u8      reserved0[208];
 124
 125         u32     gdtr_upper_base;
 126         u32     ldtr_upper_base;
 127         u32     idtr_upper_base;
 128
 129         u8      reserved1[4];
 130
 131         u64     io_rdi;
 132         u64     io_rip;
 133         u64     io_rcx;
 134         u64     io_rsi;
 135         u64     cr4;
 136
 137         u8      reserved2[68];
 138
 139         u64     gdtr_base;
 140         u64     idtr_base;
 141         u64     ldtr_base;
 142
 143         u8      reserved3[84];
 144
 145         u32     smm_revision;
 146         u32     smbase;
 147
 148         u16     io_restart;
 149         u16     autohalt_restart;
 150
 151         u8      reserved4[24];
 152
 153         u64     r15;
 154         u64     r14;
 155         u64     r13;
 156         u64     r12;
 157         u64     r11;
 158         u64     r10;
 159         u64     r9;
 160         u64     r8;
 161
 162         u64     rax;
 163         u64     rcx;
 164         u64     rdx;
 165         u64     rbx;
 166
 167         u64     rsp;
 168         u64     rbp;
 169         u64     rsi;
 170         u64     rdi;
 171
 172
 173         u64     io_mem_addr;
 174         u32     io_misc_info;
 175
 176         u32     es_sel;
 177         u32     cs_sel;
 178         u32     ss_sel;
 179         u32     ds_sel;
 180         u32     fs_sel;
 181         u32     gs_sel;
 182
 183         u32     ldtr_sel;
 184         u32     tr_sel;
 185
 186         u64     dr7;
 187         u64     dr6;
 188         u64     rip;
 189         u64     efer;
 190         u64     rflags;
 191
 192         u64     cr3;
 193         u64     cr0;
 194 } __attribute__((packed)) em64t_smm_state_save_area_t;
 195
 196
 197 /* Legacy x86 SMM State-Save Area
 198  * starts @ 0x7e00
 199  */
 200
 201 typedef struct {
 202         u8      reserved0[248];
 203         u32     smbase;
 204         u32     smm_revision;
 205         u16     io_restart;
 206         u16     autohalt_restart;
 207         u8      reserved1[132];
 208         u32     gdtbase;
 209         u8      reserved2[8];
 210         u32     idtbase;
 211         u8      reserved3[16];
 212         u32     es;
 213         u32     cs;
 214         u32     ss;
 215         u32     ds;
 216         u32     fs;
 217         u32     gs;
 218         u32     ldtbase;
 219         u32     tr;
 220         u32     dr7;
 221         u32     dr6;
 222         u32     eax;
 223         u32     ecx;
 224         u32     edx;
 225         u32     ebx;
 226         u32     esp;
 227         u32     ebp;
 228         u32     esi;
 229         u32     edi;
 230         u32     eip;
 231         u32     eflags;
 232         u32     cr3;
 233         u32     cr0;
 234 } __attribute__((packed)) legacy_smm_state_save_area_t;
 235
 236 typedef enum {
 237         AMD64,
 238         EM64T,
 239         LEGACY
 240 } save_state_type_t;
 241
 242
 243 typedef struct {
 244         save_state_type_t type;
 245         union {
 246         amd64_smm_state_save_area_t *amd64_state_save;
 247         em64t_smm_state_save_area_t *em64t_state_save;
 248         legacy_smm_state_save_area_t *legacy_state_save;
 249         };
 250 } smm_state_save_area_t;
 251