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 /* AMD64 SMM State-Save Area
  21  * starts @ 0x7e00
  22  */
  23 typedef struct {
  24         u16     es_selector;
  25         u16     es_attributes;
  26         u32     es_limit;
  27         u64     es_base;
  28
  29         u16     cs_selector;
  30         u16     cs_attributcs;
  31         u32     cs_limit;
  32         u64     cs_base;
  33
  34         u16     ss_selector;
  35         u16     ss_attributss;
  36         u32     ss_limit;
  37         u64     ss_base;
  38
  39         u16     ds_selector;
  40         u16     ds_attributds;
  41         u32     ds_limit;
  42         u64     ds_base;
  43
  44         u16     fs_selector;
  45         u16     fs_attributfs;
  46         u32     fs_limit;
  47         u64     fs_base;
  48
  49         u16     gs_selector;
  50         u16     gs_attributgs;
  51         u32     gs_limit;
  52         u64     gs_base;
  53
  54         u8      reserved0[4];
  55         u16     gdtr_limit;
  56         u8      reserved1[2];
  57         u64     gdtr_base;
  58
  59         u16     ldtr_selector;
  60         u16     ldtr_attributes;
  61         u32     ldtr_limit;
  62         u64     ldtr_base;
  63
  64         u8      reserved2[4];
  65         u16     idtr_limit;
  66         u8      reserved3[2];
  67         u64     idtr_base;
  68
  69         u16     tr_selector;
  70         u16     tr_attributes;
  71         u32     tr_limit;
  72         u64     tr_base;
  73
  74         u8      reserved4[40];
  75
  76         u8      io_restart;
  77         u8      autohalt_restart;
  78
  79         u8      reserved5[6];
  80
  81         u64     efer;
  82
  83         u8      reserved6[36];
  84
  85         u32     smm_revision;
  86         u32     smbase;
  87
  88         u8      reserved7[68];
  89
  90         u64     cr4;
  91         u64     cr3;
  92         u64     cr0;
  93         u64     dr7;
  94         u64     dr6;
  95
  96         u64     rflags;
  97         u64     rip;
  98         u64     r15;
  99         u64     r14;
 100         u64     r13;
 101         u64     r12;
 102         u64     r11;
 103         u64     r10;
 104         u64     r9;
 105         u64     r8;
 106
 107         u64     rdi;
 108         u64     rsi;
 109         u64     rpb;
 110         u64     rsp;
 111         u64     rbx;
 112         u64     rdx;
 113         u64     rcx;
 114         u64     rax;
 115 } __attribute__((packed)) amd64_smm_state_save_area_t;
 116
 117
 118 /* Intel Core 2 (EM64T) SMM State-Save Area
 119  * starts @ 0x7d00
 120  */
 121 typedef struct {
 122         u8      reserved0[208];
 123
 124         u32     gdtr_upper_base;
 125         u32     ldtr_upper_base;
 126         u32     idtr_upper_base;
 127
 128         u8      reserved1[4];
 129
 130         u64     io_rdi;
 131         u64     io_rip;
 132         u64     io_rcx;
 133         u64     io_rsi;
 134         u64     cr4;
 135
 136         u8      reserved2[68];
 137
 138         u64     gdtr_base;
 139         u64     idtr_base;
 140         u64     ldtr_base;
 141
 142         u8      reserved3[84];
 143
 144         u32     smm_revision;
 145         u32     smbase;
 146
 147         u16     io_restart;
 148         u16     autohalt_restart;
 149
 150         u8      reserved4[24];
 151
 152         u64     r15;
 153         u64     r14;
 154         u64     r13;
 155         u64     r12;
 156         u64     r11;
 157         u64     r10;
 158         u64     r9;
 159         u64     r8;
 160
 161         u64     rax;
 162         u64     rcx;
 163         u64     rdx;
 164         u64     rbx;
 165
 166         u64     rsp;
 167         u64     rbp;
 168         u64     rsi;
 169         u64     rdi;
 170
 171
 172         u64     io_mem_addr;
 173         u32     io_misc_info;
 174
 175         u32     es_sel;
 176         u32     cs_sel;
 177         u32     ss_sel;
 178         u32     ds_sel;
 179         u32     fs_sel;
 180         u32     gs_sel;
 181
 182         u32     ldtr_sel;
 183         u32     tr_sel;
 184
 185         u64     dr7;
 186         u64     dr6;
 187         u64     rip;
 188         u64     efer;
 189         u64     rflags;
 190
 191         u64     cr3;
 192         u64     cr0;
 193 } __attribute__((packed)) em64t_smm_state_save_area_t;
 194
 195
 196 /* Legacy x86 SMM State-Save Area
 197  * starts @ 0x7e00
 198  */
 199
 200 typedef struct {
 201         u8      reserved0[248];
 202         u32     smbase;
 203         u32     smm_revision;
 204         u16     io_restart;
 205         u16     autohalt_restart;
 206         u8      reserved1[132];
 207         u32     gdtbase;
 208         u8      reserved2[8];
 209         u32     idtbase;
 210         u8      reserved3[16];
 211         u32     es;
 212         u32     cs;
 213         u32     ss;
 214         u32     ds;
 215         u32     fs;
 216         u32     gs;
 217         u32     ldtbase;
 218         u32     tr;
 219         u32     dr7;
 220         u32     dr6;
 221         u32     eax;
 222         u32     ecx;
 223         u32     edx;
 224         u32     ebx;
 225         u32     esp;
 226         u32     ebp;
 227         u32     esi;
 228         u32     edi;
 229         u32     eip;
 230         u32     eflags;
 231         u32     cr3;
 232         u32     cr0;
 233 } __attribute__((packed)) legacy_smm_state_save_area_t;
 234
 235 typedef enum {
 236         AMD64,
 237         EM64T,
 238         LEGACY
 239 } save_state_type_t;
 240
 241
 242 typedef struct {
 243         save_state_type_t type;
 244         union {
 245         amd64_smm_state_save_area_t *amd64_state_save;
 246         em64t_smm_state_save_area_t *em64t_state_save;
 247         legacy_smm_state_save_area_t *legacy_state_save;
 248         };
 249 } smm_state_save_area_t;
 250
 251
 252 /* SMI handler function prototypes */
 253 void smi_handler(u32 smm_revision);
 254
 255 void io_trap_handler(int smif);
 256 int southbridge_io_trap_handler(int smif);
 257 int mainboard_io_trap_handler(int smif);
 258
 259 void southbridge_smi_set_eos(void);
 260
 261 void __attribute__((weak)) cpu_smi_handler(unsigned int node, smm_state_save_area_t *state_save);
 262 void __attribute__((weak)) northbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save);
 263 void __attribute__((weak)) southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save);
 264