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/* ----------------------------------------------------------------------- *
*
* Copyright 2006 Erwan Velu - All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* -----------------------------------------------------------------------
*/
#include <stdio.h>
#include <string.h>
#include "dmi/dmi.h"
void to_dmi_header(struct dmi_header *h, u8 *data)
{
h->type=data[0];
h->length=data[1];
h->handle=WORD(data+2);
h->data=data;
}
void dmi_system_uuid(u8 *p, s_dmi *dmi)
{
int only0xFF=1, only0x00=1;
int i;
for(i=0; i<16 && (only0x00 || only0xFF); i++)
{
if(p[i]!=0x00) only0x00=0;
if(p[i]!=0xFF) only0xFF=0;
}
if(only0xFF)
{
sprintf(dmi->system.uuid,"Not Present");
return;
}
if(only0x00)
{
sprintf(dmi->system.uuid,"Not Settable");
return;
}
sprintf(dmi->system.uuid,"%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
}
static void dmi_base_board_features(u8 code, s_dmi *dmi)
{
if((code&0x1F)!=0)
{
int i;
printf("\n");
for(i=0; i<=4; i++)
if(code&(1<<i))
((bool *)(& dmi->base_board.features))[i]=true;
}
}
static void dmi_processor_voltage(u8 code, s_dmi *dmi)
{
/* 3.3.5.4 */
static const float voltage[]={
5.0,
3.3,
2.9
};
int i;
if(code&0x80)
dmi->processor.voltage=((float)(code&0x7f)/10);
else
{
for(i=0; i<=2; i++)
if(code&(1<<i))
dmi->processor.voltage=voltage[i];
}
}
static void dmi_processor_id(u8 type, u8 *p, const char *version, s_dmi *dmi)
{
/*
* Extra flags are now returned in the ECX register when one calls
* the CPUID instruction. Their meaning is explained in table 6, but
* DMI doesn't support this yet.
*/
u32 eax, edx;
int sig=0;
/*
* This might help learn about new processors supporting the
* CPUID instruction or another form of identification.
*/
sprintf(dmi->processor.id,"ID: %02X %02X %02X %02X %02X %02X %02X %02X\n",
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
if(type==0x05) /* 80386 */
{
u16 dx=WORD(p);
/*
* 80386 have a different signature.
*/
dmi->processor.signature.type=(dx >>12);
dmi->processor.signature.family=((dx>>8)&0xF);
dmi->processor.signature.stepping=(dx>>4)&0xF;
dmi->processor.signature.minor_stepping=(dx&0xF);
return;
}
if(type==0x06) /* 80486 */
{
u16 dx=WORD(p);
/*
* Not all 80486 CPU support the CPUID instruction, we have to find
* wether the one we have here does or not. Note that this trick
* works only because we know that 80486 must be little-endian.
*/
if((dx&0x0F00)==0x0400
&& ((dx&0x00F0)==0x0040 || (dx&0x00F0)>=0x0070)
&& ((dx&0x000F)>=0x0003))
sig=1;
else
{
dmi->processor.signature.type=((dx >>12)&0x3);
dmi->processor.signature.family=((dx>>8)&0xF);
dmi->processor.signature.model=((dx>>4)&0xF);
dmi->processor.signature.stepping=(dx&0xF);
return;
}
}
else if((type>=0x0B && type<=0x13) /* Intel, Cyrix */
|| (type>=0xB0 && type<=0xB3) /* Intel */
|| type==0xB5 /* Intel */
|| type==0xB9) /* Intel */
sig=1;
else if((type>=0x18 && type<=0x1D) /* AMD */
|| type==0x1F /* AMD */
|| (type>=0xB6 && type<=0xB7) /* AMD */
|| (type>=0x83 && type<=0x85)) /* AMD */
sig=2;
else if(type==0x01 || type==0x02)
{
/*
* Some X86-class CPU have family "Other" or "Unknown". In this case,
* we use the version string to determine if they are known to
* support the CPUID instruction.
*/
if(strncmp(version, "Pentium III MMX", 15)==0)
sig=1;
else if(strncmp(version, "AMD Athlon(TM)", 14)==0
|| strncmp(version, "AMD Opteron(tm)", 15)==0)
sig=2;
else
return;
}
else /* not X86-class */
return;
eax=DWORD(p);
edx=DWORD(p+4);
switch(sig)
{
case 1: /* Intel */
dmi->processor.signature.type=((eax >>12)&0x3);
dmi->processor.signature.family=(((eax>>16)&0xFF0)+((eax>>8)&0x00F));
dmi->processor.signature.model=(((eax>>12)&0xF0)+((eax>>4)&0x0F));
dmi->processor.signature.stepping=(eax&0xF);
break;
case 2: /* AMD */
dmi->processor.signature.family=(((eax>>8)&0xF)==0xF?(eax>>20)&0xFF:(eax>>8)&0xF);
dmi->processor.signature.model =(((eax>>4)&0xF)==0xF?(eax>>16)&0xF :(eax>>4)&0xF);
dmi->processor.signature.stepping=(eax&0xF);
break;
}
edx=DWORD(p+4);
if((edx&0x3FF7FDFF)!=0)
{
int i;
for(i=0; i<=31; i++)
if(cpu_flags_strings[i]!=NULL && edx&(1<<i))
((bool *)(& dmi->processor.cpu_flags))[i]=true;
//printf("%s\t%s\n", prefix, flags[i]);
}
}
void dmi_system_wake_up_type(u8 code, s_dmi *dmi)
{
/* 3.3.2.1 */
static const char *type[]={
"Reserved", /* 0x00 */
"Other",
"Unknown",
"APM Timer",
"Modem Ring",
"LAN Remote",
"Power Switch",
"PCI PME#",
"AC Power Restored" /* 0x08 */
};
if(code<=0x08) {
strcpy(dmi->system.wakeup_type,type[code]);
} else {
strcpy(dmi->system.wakeup_type,out_of_spec);
}
return;
}
void dmi_bios_runtime_size(u32 code, s_dmi *dmi)
{
if(code&0x000003FF) {
dmi->bios.runtime_size=code;
strcpy(dmi->bios.runtime_size_unit,"bytes");
} else {
dmi->bios.runtime_size=code >>10;
strcpy(dmi->bios.runtime_size_unit,"KB");
}
}
void dmi_bios_characteristics(u64 code, s_dmi *dmi)
{
int i;
/*
* This isn't very clear what this bit is supposed to mean
*/
if(code.l&(1<<3))
{
((bool *)(& dmi->bios.characteristics))[0]=true;
return;
}
for(i=4; i<=31; i++)
if(code.l&(1<<i))
((bool *)(& dmi->bios.characteristics))[i-3]=true;
}
void dmi_bios_characteristics_x1(u8 code, s_dmi *dmi)
{
int i;
for(i=0; i<=7; i++)
if(code&(1<<i))
((bool *)(& dmi->bios.characteristics_x1))[i]=true;
}
void dmi_bios_characteristics_x2(u8 code, s_dmi *dmi)
{
int i;
for(i=0; i<=2; i++)
if(code&(1<<i))
((bool *)(& dmi->bios.characteristics_x2))[i]=true;
}
const char *dmi_string(struct dmi_header *dm, u8 s)
{
char *bp=(char *)dm->data;
size_t i, len;
if(s==0)
return "Not Specified";
bp+=dm->length;
while(s>1 && *bp)
{
bp+=strlen(bp);
bp++;
s--;
}
if(!*bp)
return bad_index;
/* ASCII filtering */
len=strlen(bp);
for(i=0; i<len; i++)
if(bp[i]<32 || bp[i]==127)
bp[i]='.';
return bp;
}
inline int dmi_checksum(u8 *buf)
{
u8 sum=0;
int a;
for(a=0; a<15; a++)
sum+=buf[a];
return (sum==0);
}
int dmi_interate() {
u8 buf[16];
char *p,*q;
p=(char *)0xF0000; /* The start address to look at the dmi table */
for (q = p; q < p + 0x10000; q += 16) {
memcpy(buf, q, 15);
if(memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf)) {
dmitable.num = buf[13]<<8|buf[12];
dmitable.len = buf[7]<<8|buf[6];
dmitable.base = buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];
dmitable.ver = (buf[0x06]<<8)+buf[0x07];
/*
* DMI version 0.0 means that the real version is taken from
* the SMBIOS version, which we don't know at this point.
*/
if(buf[14]!=0)
printf("DMI %d.%d present.\n",buf[14]>>4, buf[14]&0x0F);
else
printf("DMI present.\n");
printf("%d structures occupying %d bytes.\n",dmitable.num, dmitable.len);
printf("DMI table at 0x%08X.\n",dmitable.base);
return 1;
}
}
dmitable.base=0;
dmitable.num=0;
dmitable.ver=0;
dmitable.len=0;
return 0;
}
void dmi_decode(struct dmi_header *h, u16 ver, s_dmi *dmi)
{
u8 *data=h->data;
/*
* Note: DMI types 37, 38 and 39 are untested
*/
switch(h->type)
{
case 0: /* 3.3.1 BIOS Information */
// printf("BIOS Information\n");
if(h->length<0x12) break;
strcpy(dmi->bios.vendor,dmi_string(h,data[0x04]));
strcpy(dmi->bios.version,dmi_string(h,data[0x05]));
strcpy(dmi->bios.release_date,dmi_string(h,data[0x08]));
dmi->bios.address=WORD(data+0x06);
dmi_bios_runtime_size((0x10000-WORD(data+0x06))<<4,dmi);
dmi->bios.rom_size=(data[0x09]+1)<<6;
strcpy(dmi->bios.rom_size_unit,"kB");
dmi_bios_characteristics(QWORD(data+0x0A),dmi);
if(h->length<0x13) break;
dmi_bios_characteristics_x1(data[0x12], dmi);
if(h->length<0x14) break;
dmi_bios_characteristics_x2(data[0x13], dmi);
if(h->length<0x18) break;
if(data[0x14]!=0xFF && data[0x15]!=0xFF)
sprintf(dmi->bios.bios_revision,"%u.%u",
data[0x14], data[0x15]);
if(data[0x16]!=0xFF && data[0x17]!=0xFF)
sprintf(dmi->bios.firmware_revision,"%u.%u",
data[0x16], data[0x17]);
break;
case 1: /* 3.3.2 System Information */
// printf("System Information\n");
if(h->length<0x08) break;
strcpy(dmi->system.manufacturer,dmi_string(h,data[0x04]));
strcpy(dmi->system.product_name,dmi_string(h,data[0x05]));
strcpy(dmi->system.version,dmi_string(h,data[0x06]));
strcpy(dmi->system.serial,dmi_string(h,data[0x07]));
if(h->length<0x19) break;
dmi_system_uuid(data+0x08,dmi);
dmi_system_wake_up_type(data[0x18],dmi);
if(h->length<0x1B) break;
strcpy(dmi->system.sku_number,dmi_string(h,data[0x19]));
strcpy(dmi->system.family,dmi_string(h,data[0x1A]));
break;
case 2: /* 3.3.3 Base Board Information */
// printf("Base Board Information\n");
if(h->length<0x08) break;
strcpy(dmi->base_board.manufacturer,dmi_string(h,data[0x04]));
strcpy(dmi->base_board.product_name,dmi_string(h,data[0x05]));
strcpy(dmi->base_board.version,dmi_string(h,data[0x06]));
strcpy(dmi->base_board.serial,dmi_string(h,data[0x07]));
if(h->length<0x0F) break;
strcpy(dmi->base_board.asset_tag,dmi_string(h,data[0x08]));
dmi_base_board_features(data[0x09], dmi);
strcpy(dmi->base_board.location,dmi_string(h,data[0x0A]));
strcpy(dmi->base_board.type,dmi_string(h,data[0x0D]));
if(h->length<0x0F+data[0x0E]*sizeof(u16)) break;
break;
case 3: /* 3.3.4 Chassis Information */
// printf("Chassis Information\n");
if(h->length<0x09) break;
strcpy(dmi->chassis.manufacturer,dmi_string(h,data[0x04]));
strcpy(dmi->chassis.type,dmi_chassis_type(data[0x05]&0x7F));
strcpy(dmi->chassis.lock,dmi_chassis_lock(data[0x05]>>7));
strcpy(dmi->chassis.version,dmi_string(h,data[0x06]));
strcpy(dmi->chassis.serial,dmi_string(h,data[0x07]));
strcpy(dmi->chassis.asset_tag,dmi_string(h,data[0x08]));
if(h->length<0x0D) break;
strcpy(dmi->chassis.boot_up_state,dmi_chassis_state(data[0x09]));
strcpy(dmi->chassis.power_supply_state,dmi_chassis_state(data[0x0A]));
strcpy(dmi->chassis.thermal_state,dmi_chassis_state(data[0x0B]));
strcpy(dmi->chassis.security_status,dmi_chassis_security_status(data[0x0C]));
if(h->length<0x11) break;
sprintf(dmi->chassis.oem_information,"0x%08X\n",DWORD(data+0x0D));
if(h->length<0x15) break;
dmi->chassis.height=data[0x11];
dmi->chassis.nb_power_cords=data[0x12];
break;
case 4: /* 3.3.5 Processor Information */
// printf("Processor Information\n");
if(h->length<0x1A) break;
strcpy(dmi->processor.socket_designation,dmi_string(h, data[0x04]));
strcpy(dmi->processor.type,dmi_processor_type(data[0x05]));
strcpy(dmi->processor.family,dmi_processor_family(data[0x06]));
strcpy(dmi->processor.manufacturer,dmi_string(h, data[0x07]));
dmi_processor_id(data[0x06], data+8, dmi_string(h, data[0x10]), dmi);
strcpy(dmi->processor.version,dmi_string(h, data[0x10]));
dmi_processor_voltage(data[0x11],dmi);
dmi->processor.external_clock=WORD(data+0x12);
dmi->processor.max_speed=WORD(data+0x14);
dmi->processor.current_speed=WORD(data+0x16);
if(data[0x18]&(1<<6))
strcpy(dmi->processor.status,dmi_processor_status(data[0x18]&0x07));
else
sprintf(dmi->processor.status,"Unpopulated");
sprintf(dmi->processor.upgrade,dmi_processor_upgrade(data[0x19]));
if(h->length<0x20) break;
dmi_processor_cache(WORD(data+0x1A), "L1", ver,dmi->processor.cache1);
dmi_processor_cache(WORD(data+0x1C), "L2", ver,dmi->processor.cache2);
dmi_processor_cache(WORD(data+0x1E), "L3", ver,dmi->processor.cache3);
if(h->length<0x23) break;
strcpy(dmi->processor.serial,dmi_string(h, data[0x20]));
strcpy(dmi->processor.asset_tag,dmi_string(h, data[0x21]));
strcpy(dmi->processor.part_number,dmi_string(h, data[0x22]));
break;
}
}
void parse_dmitable(s_dmi *dmi) {
int i=0;
u8 *data = NULL;
u8 buf[dmitable.len];
memcpy(buf,(int *)dmitable.base,sizeof(u8) * dmitable.len);
data=buf;
while(i<dmitable.num && data+4<=buf+dmitable.len) /* 4 is the length of an SMBIOS structure header */ {
u8 *next;
struct dmi_header h;
to_dmi_header(&h, data);
/*
* If a short entry is found (less than 4 bytes), not only it
* is invalid, but we cannot reliably locate the next entry.
* Better stop at this point, and let the user know his/her
* table is broken.
*/
if(h.length<4)
{
printf("Invalid entry length (%u). DMI table is broken! Stop.\n\n", (unsigned int)h.length);
break;
}
// printf("Handle 0x%04X, DMI type %d, %d bytes\n", h.handle, h.type, h.length);
/* loo for the next handle */
next=data+h.length;
while(next-buf+1<dmitable.len && (next[0]!=0 || next[1]!=0))
next++;
next+=2;
if(next-buf<=dmitable.len)
{
dmi_decode(&h, dmitable.ver,dmi);
}
else
printf("\t<TRUNCATED>\n");
printf("\n");
data=next;
i++;
}
}
|
