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/*
* This file is part of the coreboot 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
*/
/* AMD64 SMM State-Save Area
* starts @ 0x7e00
*/
typedef struct {
u16 es_selector;
u16 es_attributes;
u32 es_limit;
u64 es_base;
u16 cs_selector;
u16 cs_attributcs;
u32 cs_limit;
u64 cs_base;
u16 ss_selector;
u16 ss_attributss;
u32 ss_limit;
u64 ss_base;
u16 ds_selector;
u16 ds_attributds;
u32 ds_limit;
u64 ds_base;
u16 fs_selector;
u16 fs_attributfs;
u32 fs_limit;
u64 fs_base;
u16 gs_selector;
u16 gs_attributgs;
u32 gs_limit;
u64 gs_base;
u8 reserved0[4];
u16 gdtr_limit;
u8 reserved1[2];
u64 gdtr_base;
u16 ldtr_selector;
u16 ldtr_attributes;
u32 ldtr_limit;
u64 ldtr_base;
u8 reserved2[4];
u16 idtr_limit;
u8 reserved3[2];
u64 idtr_base;
u16 tr_selector;
u16 tr_attributes;
u32 tr_limit;
u64 tr_base;
u8 reserved4[40];
u8 io_restart;
u8 autohalt_restart;
u8 reserved5[6];
u64 efer;
u8 reserved6[36];
u32 smm_revision;
u32 smbase;
u8 reserved7[68];
u64 cr4;
u64 cr3;
u64 cr0;
u64 dr7;
u64 dr6;
u64 rflags;
u64 rip;
u64 r15;
u64 r14;
u64 r13;
u64 r12;
u64 r11;
u64 r10;
u64 r9;
u64 r8;
u64 rdi;
u64 rsi;
u64 rpb;
u64 rsp;
u64 rbx;
u64 rdx;
u64 rcx;
u64 rax;
} __attribute__((packed)) amd64_smm_state_save_area_t;
/* Intel Core 2 (EM64T) SMM State-Save Area
* starts @ 0x7d00
*/
typedef struct {
u8 reserved0[208];
u32 gdtr_upper_base;
u32 ldtr_upper_base;
u32 idtr_upper_base;
u8 reserved1[4];
u64 io_rdi;
u64 io_rip;
u64 io_rcx;
u64 io_rsi;
u64 cr4;
u8 reserved2[68];
u64 gdtr_base;
u64 idtr_base;
u64 ldtr_base;
u8 reserved3[84];
u32 smm_revision;
u32 smbase;
u16 io_restart;
u16 autohalt_restart;
u8 reserved4[24];
u64 r15;
u64 r14;
u64 r13;
u64 r12;
u64 r11;
u64 r10;
u64 r9;
u64 r8;
u64 rax;
u64 rcx;
u64 rdx;
u64 rbx;
u64 rsp;
u64 rbp;
u64 rsi;
u64 rdi;
u64 io_mem_addr;
u32 io_misc_info;
u32 es_sel;
u32 cs_sel;
u32 ss_sel;
u32 ds_sel;
u32 fs_sel;
u32 gs_sel;
u32 ldtr_sel;
u32 tr_sel;
u64 dr7;
u64 dr6;
u64 rip;
u64 efer;
u64 rflags;
u64 cr3;
u64 cr0;
} __attribute__((packed)) em64t_smm_state_save_area_t;
/* Legacy x86 SMM State-Save Area
* starts @ 0x7e00
*/
typedef struct {
u8 reserved0[248];
u32 smbase;
u32 smm_revision;
u16 io_restart;
u16 autohalt_restart;
u8 reserved1[132];
u32 gdtbase;
u8 reserved2[8];
u32 idtbase;
u8 reserved3[16];
u32 es;
u32 cs;
u32 ss;
u32 ds;
u32 fs;
u32 gs;
u32 ldtbase;
u32 tr;
u32 dr7;
u32 dr6;
u32 eax;
u32 ecx;
u32 edx;
u32 ebx;
u32 esp;
u32 ebp;
u32 esi;
u32 edi;
u32 eip;
u32 eflags;
u32 cr3;
u32 cr0;
} __attribute__((packed)) legacy_smm_state_save_area_t;
typedef enum {
AMD64,
EM64T,
LEGACY
} save_state_type_t;
typedef struct {
save_state_type_t type;
union {
amd64_smm_state_save_area_t *amd64_state_save;
em64t_smm_state_save_area_t *em64t_state_save;
legacy_smm_state_save_area_t *legacy_state_save;
};
} smm_state_save_area_t;
/* SMI handler function prototypes */
void smi_handler(u32 smm_revision);
void io_trap_handler(int smif);
int southbridge_io_trap_handler(int smif);
int mainboard_io_trap_handler(int smif);
void southbridge_smi_set_eos(void);
void __attribute__((weak)) cpu_smi_handler(unsigned int node, smm_state_save_area_t *state_save);
void __attribute__((weak)) northbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save);
void __attribute__((weak)) southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save);
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