src/include/cpu/x86/smm.h

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2008 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 typedef uint64_t u64;
  22
  23 /* AMD64 SMM State-Save Area
  24  * starts @ 0x7e00
  25  */
  26 typedef struct {
  27         u16     es_selector;
  28         u16     es_attributes;
  29         u32     es_limit;
  30         u64     es_base;
  31
  32         u16     cs_selector;
  33         u16     cs_attributcs;
  34         u32     cs_limit;
  35         u64     cs_base;
  36
  37         u16     ss_selector;
  38         u16     ss_attributss;
  39         u32     ss_limit;
  40         u64     ss_base;
  41
  42         u16     ds_selector;
  43         u16     ds_attributds;
  44         u32     ds_limit;
  45         u64     ds_base;
  46
  47         u16     fs_selector;
  48         u16     fs_attributfs;
  49         u32     fs_limit;
  50         u64     fs_base;
  51
  52         u16     gs_selector;
  53         u16     gs_attributgs;
  54         u32     gs_limit;
  55         u64     gs_base;
  56
  57         u8      reserved0[4];
  58         u16     gdtr_limit;
  59         u8      reserved1[2];
  60         u64     gdtr_base;
  61
  62         u16     ldtr_selector;
  63         u16     ldtr_attributes;
  64         u32     ldtr_limit;
  65         u64     ldtr_base;
  66
  67         u8      reserved2[4];
  68         u16     idtr_limit;
  69         u8      reserved3[2];
  70         u64     idtr_base;
  71
  72         u16     tr_selector;
  73         u16     tr_attributes;
  74         u32     tr_limit;
  75         u64     tr_base;
  76
  77         u8      reserved4[40];
  78
  79         u8      io_restart;
  80         u8      autohalt_restart;
  81
  82         u8      reserved5[6];
  83
  84         u64     efer;
  85
  86         u8      reserved6[36];
  87
  88         u32     smm_revision;
  89         u32     smbase;
  90
  91         u8      reserved7[68];
  92
  93         u64     cr4;
  94         u64     cr3;
  95         u64     cr0;
  96         u64     dr7;
  97         u64     dr6;
  98
  99         u64     rflags;
 100         u64     rip;
 101         u64     r15;
 102         u64     r14;
 103         u64     r13;
 104         u64     r12;
 105         u64     r11;
 106         u64     r10;
 107         u64     r9;
 108         u64     r8;
 109
 110         u64     rdi;
 111         u64     rsi;
 112         u64     rpb;
 113         u64     rsp;
 114         u64     rbx;
 115         u64     rdx;
 116         u64     rcx;
 117         u64     rax;
 118 } __attribute__((packed)) amd64_smm_state_save_area_t;
 119
 120
 121 /* Intel Core 2 (EM64T) SMM State-Save Area
 122  * starts @ 0x7d00
 123  */
 124 typedef struct {
 125         u8      reserved0[208];
 126
 127         u32     gdtr_upper_base;
 128         u32     ldtr_upper_base;
 129         u32     idtr_upper_base;
 130
 131         u8      reserved1[4];
 132
 133         u64     io_rdi;
 134         u64     io_rip;
 135         u64     io_rcx;
 136         u64     io_rsi;
 137         u64     cr4;
 138
 139         u8      reserved2[68];
 140
 141         u64     gdtr_base;
 142         u64     idtr_base;
 143         u64     ldtr_base;
 144
 145         u8      reserved3[84];
 146
 147         u32     smm_revision;
 148         u32     smbase;
 149
 150         u16     io_restart;
 151         u16     autohalt_restart;
 152
 153         u8      reserved4[24];
 154
 155         u64     r15;
 156         u64     r14;
 157         u64     r13;
 158         u64     r12;
 159         u64     r11;
 160         u64     r10;
 161         u64     r9;
 162         u64     r8;
 163
 164         u64     rax;
 165         u64     rcx;
 166         u64     rdx;
 167         u64     rbx;
 168
 169         u64     rsp;
 170         u64     rbp;
 171         u64     rsi;
 172         u64     rdi;
 173
 174
 175         u64     io_mem_addr;
 176         u32     io_misc_info;
 177
 178         u32     es_sel;
 179         u32     cs_sel;
 180         u32     ss_sel;
 181         u32     ds_sel;
 182         u32     fs_sel;
 183         u32     gs_sel;
 184
 185         u32     ldtr_sel;
 186         u32     tr_sel;
 187
 188         u64     dr7;
 189         u64     dr6;
 190         u64     rip;
 191         u64     efer;
 192         u64     rflags;
 193
 194         u64     cr3;
 195         u64     cr0;
 196 } __attribute__((packed)) em64t_smm_state_save_area_t;
 197
 198
 199 /* Legacy x86 SMM State-Save Area
 200  * starts @ 0x7e00
 201  */
 202
 203 typedef struct {
 204         u8      reserved0[248];
 205         u32     smbase;
 206         u32     smm_revision;
 207         u16     io_restart;
 208         u16     autohalt_restart;
 209         u8      reserved1[132];
 210         u32     gdtbase;
 211         u8      reserved2[8];
 212         u32     idtbase;
 213         u8      reserved3[16];
 214         u32     es;
 215         u32     cs;
 216         u32     ss;
 217         u32     ds;
 218         u32     fs;
 219         u32     gs;
 220         u32     ldtbase;
 221         u32     tr;
 222         u32     dr7;
 223         u32     dr6;
 224         u32     eax;
 225         u32     ecx;
 226         u32     edx;
 227         u32     ebx;
 228         u32     esp;
 229         u32     ebp;
 230         u32     esi;
 231         u32     edi;
 232         u32     eip;
 233         u32     eflags;
 234         u32     cr3;
 235         u32     cr0;
 236 } __attribute__((packed)) legacy_smm_state_save_area_t;
 237
 238 typedef enum {
 239         AMD64,
 240         EM64T,
 241         LEGACY
 242 } save_state_type_t;
 243
 244
 245 typedef struct {
 246         save_state_type_t type;
 247         union {
 248         amd64_smm_state_save_area_t *amd64_state_save;
 249         em64t_smm_state_save_area_t *em64t_state_save;
 250         legacy_smm_state_save_area_t *legacy_state_save;
 251         };
 252 } smm_state_save_area_t;
 253