diff options
Diffstat (limited to 'biosdecode.c')
| -rw-r--r-- | biosdecode.c | 666 |
1 files changed, 0 insertions, 666 deletions
diff --git a/biosdecode.c b/biosdecode.c deleted file mode 100644 index 354234e..0000000 --- a/biosdecode.c +++ /dev/null @@ -1,666 +0,0 @@ -/* - * BIOS Decode - * - * (C) 2000-2002 Alan Cox <alan@redhat.com> - * (C) 2002-2007 Jean Delvare <khali@linux-fr.org> - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * For the avoidance of doubt the "preferred form" of this code is one which - * is in an open unpatent encumbered format. Where cryptographic key signing - * forms part of the process of creating an executable the information - * including keys needed to generate an equivalently functional executable - * are deemed to be part of the source code. - * - * References: - * - DMTF "System Management BIOS Reference Specification" - * Version 2.3.4 - * http://www.dmtf.org/standards/smbios - * - Intel "Preboot Execution Environment (PXE) Specification" - * Version 2.1 - * http://www.intel.com/labs/manage/wfm/wfmspecs.htm - * - ACPI "Advanced Configuration and Power Interface Specification" - * Revision 2.0 - * http://www.acpi.info/spec20.htm - * - Phoenix "BIOS32 Service Directory" - * Revision 0.4 - * http://www.phoenix.com/en/support/white+papers-specs/ - * - Microsoft "Plug and Play BIOS Specification" - * Version 1.0A - * http://www.microsoft.com/hwdev/tech/PnP/ - * - Microsoft "PCI IRQ Routing Table Specification" - * Version 1.0 - * http://www.microsoft.com/hwdev/archive/BUSBIOS/pciirq.asp - * - Compaq "Technical Reference Guide for Compaq Deskpro 4000 and 6000" - * First Edition - * http://h18000.www1.hp.com/support/techpubs/technical_reference_guides/113a1097.html - * - IBM "Using the BIOS Build ID to identify Thinkpad systems" - * Revision 2005-09-19 - * http://www-307.ibm.com/pc/support/site.wss/MIGR-45120.html - * - Fujitsu application panel technical details - * As of July 23rd, 2004 - * http://apanel.sourceforge.net/tech.php - */ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <getopt.h> - -#include "version.h" -#include "config.h" -#include "types.h" -#include "util.h" - -/* Options are global */ -struct opt -{ - const char* devmem; - unsigned int flags; -}; -static struct opt opt; - -#define FLAG_VERSION (1<<0) -#define FLAG_HELP (1<<1) - -struct bios_entry { - const char *anchor; - size_t anchor_len; /* computed */ - off_t low_address; - off_t high_address; - size_t (*length)(const u8 *); - int (*decode)(const u8*, size_t); -}; - - -/* - * SMBIOS - */ - -static size_t smbios_length(const u8 *p) -{ - return(p[0x05]==0x1E?0x1F:p[0x05]); -} - -static int smbios_decode(const u8 *p, size_t len) -{ - if(len<0x1F || !checksum(p, p[0x05]) - || memcmp("_DMI_", p+0x10, 5)!=0 - || !checksum(p+0x10, 0x0F)) - return 0; - - printf("SMBIOS %u.%u present.\n", - p[0x06], p[0x07]); - printf("\tStructure Table Length: %u bytes\n", - WORD(p+0x16)); - printf("\tStructure Table Address: 0x%08X\n", - DWORD(p+0x18)); - printf("\tNumber Of Structures: %u\n", - WORD(p+0x1C)); - printf("\tMaximum Structure Size: %u bytes\n", - WORD(p+0x08)); - - return 1; -} - -static size_t dmi_length(const u8 *p) -{ - (void) p; - - return(0x0F); -} - -static int dmi_decode(const u8 *p, size_t len) -{ - if(len<0x0F || !checksum(p, len)) - return 0; - - printf("Legacy DMI %u.%u present.\n", - p[0x0E]>>4, p[0x0E]&0x0F); - printf("\tStructure Table Length: %u bytes\n", - WORD(p+0x06)); - printf("\tStructure Table Address: 0x%08X\n", - DWORD(p+0x08)); - printf("\tNumber Of Structures: %u\n", - WORD(p+0x0C)); - - return 1; -} - -/* - * SYSID - */ - -static size_t sysid_length(const u8 *p) -{ - return WORD(p+0x08); -} - -static int sysid_decode(const u8 *p, size_t len) -{ - if(len<0x11 || !checksum(p, WORD(p+0x08))) - return 0; - - printf("SYSID present.\n"); - printf("\tRevision: %u\n", - p[0x10]); - printf("\tStructure Table Address: 0x%08X\n", - DWORD(p+0x0A)); - printf("\tNumber Of Structures: %u\n", - WORD(p+0x0E)); - - return 1; -} - -/* - * PnP - */ - -static size_t pnp_length(const u8 *p) -{ - return(p[0x05]); -} - -static const char *pnp_event_notification(u8 code) -{ - static const char *notification[]={ - "Not Supported", /* 0x0 */ - "Polling", - "Asynchronous", - "Unknown" /* 0x3 */ - }; - - return notification[code]; -} - -static int pnp_decode(const u8 *p, size_t len) -{ - if(len<0x21 || !checksum(p, p[0x05])) - return 0; - - printf("PNP BIOS %u.%u present.\n", - p[0x04]>>4, p[0x04]&0x0F); - printf("\tEvent Notification: %s\n", - pnp_event_notification(WORD(p+0x06)&0x03)); - if((WORD(p+0x06)&0x03)==0x01) - printf("\tEvent Notification Flag Address: 0x%08X\n", - DWORD(p+0x09)); - printf("\tReal Mode 16-bit Code Address: %04X:%04X\n", - WORD(p+0x0F), WORD(p+0x0D)); - printf("\tReal Mode 16-bit Data Address: %04X:0000\n", - WORD(p+0x1B)); - printf("\t16-bit Protected Mode Code Address: 0x%08X\n", - DWORD(p+0x13)+WORD(p+0x11)); - printf("\t16-bit Protected Mode Data Address: 0x%08X\n", - DWORD(p+0x1D)); - if(DWORD(p+0x17)!=0) - printf("\tOEM Device Identifier: %c%c%c%02X%02X\n", - 0x40+((p[0x17]>>2)&0x1F), - 0x40+((p[0x17]&0x03)<<3)+((p[0x18]>>5)&0x07), - 0x40+(p[0x18]&0x1F), p[0x19], p[0x20]); - - return 1; -} - -/* - * ACPI - */ - -static size_t acpi_length(const u8 *p) -{ - return(p[15]==2?36:20); -} - -static const char *acpi_revision(u8 code) -{ - switch(code) - { - case 0: - return " 1.0"; - case 2: - return " 2.0"; - default: - return ""; - } -} - -static int acpi_decode(const u8 *p, size_t len) -{ - if(len<20 || !checksum(p, 20)) - return 0; - - printf("ACPI%s present.\n", - acpi_revision(p[15])); - printf("\tOEM Identifier: %c%c%c%c%c%c\n", - p[9], p[10], p[11], p[12], p[13], p[14]); - printf("\tRSD Table 32-bit Address: 0x%08X\n", - DWORD(p+16)); - - if(len<36) - return 1; - - if(DWORD(p+20)>len || !checksum(p, DWORD(p+20))) - return 0; - - if(DWORD(p+20)<32) return 1; - - printf("\tXSD Table 64-bit Address: 0x%08X%08X\n", - QWORD(p+24).h, QWORD(p+24).l); - - return 1; -} - -/* - * Sony - */ - -static size_t sony_length(const u8 *p) -{ - return(p[0x05]); -} - -static int sony_decode(const u8 *p, size_t len) -{ - if(!checksum(p, len)) - return 0; - - printf("Sony system detected.\n"); - - return 1; -} - -/* - * BIOS32 - */ - -static size_t bios32_length(const u8 *p) -{ - return p[0x09]<<4; -} - -static int bios32_decode(const u8 *p, size_t len) -{ - if(len<0x0A || !checksum(p, p[0x09]<<4)) - return 0; - - printf("BIOS32 Service Directory present.\n"); - printf("\tRevision: %u\n", - p[0x08]); - printf("\tCalling Interface Address: 0x%08X\n", - DWORD(p+0x04)); - - return 1; -} - -/* - * PIR - */ - -static void pir_irqs(u16 code) -{ - if(code==0) - printf(" None"); - else - { - u8 i; - - for(i=0; i<16; i++) - if(code&(1<<i)) - printf(" %u", i); - } -} - -static void pir_slot_number(u8 code) -{ - if(code==0) - printf(" on-board"); - else - printf(" slot number %u", code); -} - -static size_t pir_length(const u8 *p) -{ - return WORD(p+6); -} - -static int pir_decode(const u8 *p, size_t len) -{ - int i; - - if(len<32 || !checksum(p, WORD(p+6))) - return 0; - - printf("PCI Interrupt Routing %u.%u present.\n", - p[5], p[4]); - printf("\tRouter ID: %02x:%02x.%1x\n", - p[8], p[9]>>3, p[9]&0x07); - printf("\tExclusive IRQs:"); - pir_irqs(WORD(p+10)); - printf("\n"); - if(DWORD(p+12)!=0) - printf("\tCompatible Router: %04x:%04x\n", - WORD(p+12), WORD(p+14)); - if(DWORD(p+16)!=0) - printf("\tMiniport Data: 0x%08X\n", - DWORD(p+16)); - - for(i=1; i<=(WORD(p+6)-32)/16; i++) - { - printf("\tSlot Entry %u: ID %02x:%02x,", - i, p[(i+1)*16], p[(i+1)*16+1]>>3); - pir_slot_number(p[(i+1)*16+14]); - printf("\n"); -/* printf("\tSlot Entry %u\n", i); - printf("\t\tID: %02x:%02x\n", - p[(i+1)*16], p[(i+1)*16+1]>>3); - printf("\t\tLink Value for INTA#: %u\n", - p[(i+1)*16+2]); - printf("\t\tIRQ Bitmap for INTA#:"); - pir_irqs(WORD(p+(i+1)*16+3)); - printf("\n"); - printf("\t\tLink Value for INTB#: %u\n", - p[(i+1)*16+5]); - printf("\t\tIRQ Bitmap for INTB#:"); - pir_irqs(WORD(p+(i+1)*16+6)); - printf("\n"); - printf("\t\tLink Value for INTC#: %u\n", - p[(i+1)*16+8]); - printf("\t\tIRQ Bitmap for INTC#:"); - pir_irqs(WORD(p+(i+1)*16+9)); - printf("\n"); - printf("\t\tLink Value for INTD#: %u\n", - p[(i+1)*16+11]); - printf("\t\tIRQ Bitmap for INTD#:"); - pir_irqs(WORD(p+(i+1)*16+12)); - printf("\n"); - printf("\t\tSlot Number:"); - pir_slot_number(p[(i+1)*16+14]); - printf("\n");*/ - } - - return 1; -} - -/* - * Compaq-specific entries - */ - -static size_t compaq_length(const u8 *p) -{ - return (p[4]*10+5); -} - -static int compaq_decode(const u8 *p, size_t len) -{ - unsigned int i; - (void) len; - - printf("Compaq-specific entries present.\n"); - - /* integrity checking (lack of checksum) */ - for(i=0; i<p[4]; i++) - { - /* - * We do not check for truncated entries, because the length - * was computed from the number of records in compaq_length - * right above, so it can't be wrong. - */ - if(p[5+i*10]!='$' || !(p[6+i*10]>='A' && p[6+i*10]<='Z') - || !(p[7+i*10]>='A' && p[7+i*10]<='Z') - || !(p[8+i*10]>='A' && p[8+i*10]<='Z')) - { - printf("\t Abnormal entry! Please report. [%02X %02X " - "%02X %02X]\n", p[5+i*10], p[6+i*10], - p[7+i*10], p[8+i*10]); - return 0; - } - } - - for(i=0; i<p[4]; i++) - { - printf("\tEntry %u: %c%c%c%c at 0x%08X (%u bytes)\n", - i+1, p[5+i*10], p[6+i*10], p[7+i*10], p[8+i*10], - DWORD(p+9+i*10), WORD(p+13+i*10)); - } - - return 1; -} - -/* - * VPD (vital product data, IBM-specific) - */ - -static void vpd_print_entry(const char *name, const u8 *p, size_t len) -{ - size_t i; - - printf("\t%s: ", name); - for(i=0; i<len; i++) - if(p[i]>=32 && p[i]<127) - printf("%c", p[i]); - printf("\n"); -} - -static size_t vpd_length(const u8 *p) -{ - return (p[5]); -} - -static int vpd_decode(const u8 *p, size_t len) -{ - if(len<0x30) - return 0; - - /* XSeries have longer records. */ - if(!(len>=0x45 && checksum(p, len)) - /* Some Netvista seem to work with this. */ - && !checksum(p, 0x30) - /* The Thinkpad checksum does *not* include the first 13 bytes. */ - && !checksum(p+0x0D, 0x30-0x0D)) - return 0; - - printf("VPD present.\n"); - - vpd_print_entry("BIOS Build ID", p+0x0D, 9); - vpd_print_entry("Box Serial Number", p+0x16, 7); - vpd_print_entry("Motherboard Serial Number", p+0x1D, 11); - vpd_print_entry("Machine Type/Model", p+0x28, 7); - - if(len<0x45) - return 1; - - vpd_print_entry("BIOS Release Date", p+0x30, 8); - - return 1; -} - -/* - * Fujitsu application panel - */ - -static size_t fjkeyinf_length(const u8 *p) -{ - (void) p; - /* - * We don't know at this point, it's somewhere between 12 and 32. - * So we return the max, it shouldn't hurt. - */ - return 32; -} - -static int fjkeyinf_decode(const u8 *p, size_t len) -{ - (void) len; - int i; - - printf("Fujitsu application panel present.\n"); - - for (i = 0; i < 6; i++) - { - if (*(p+8+i*4)==0) - return 1; - printf("\tDevice %d: type %u, chip %u", i+1, - *(p+8+i*4), *(p+8+i*4+2)); - if (*(p+8+i*4+1)) /* Access method */ - printf(", SMBus address 0x%x", *(p+8+i*4+3) >> 1); - printf("\n"); - } - - return 1; -} - -/* - * Main - */ - -static struct bios_entry bios_entries[]={ - { "_SM_", 0, 0xF0000, 0xFFFFF, smbios_length, smbios_decode }, - { "_DMI_", 0, 0xF0000, 0xFFFFF, dmi_length, dmi_decode }, - { "_SYSID_", 0, 0xE0000, 0xFFFFF, sysid_length, sysid_decode }, - { "$PnP", 0, 0xF0000, 0xFFFFF, pnp_length, pnp_decode }, - { "RSD PTR ", 0, 0xE0000, 0xFFFFF, acpi_length, acpi_decode }, - { "$SNY", 0, 0xE0000, 0xFFFFF, sony_length, sony_decode }, - { "_32_", 0, 0xE0000, 0xFFFFF, bios32_length, bios32_decode }, - { "$PIR", 0, 0xF0000, 0xFFFFF, pir_length, pir_decode }, - { "32OS", 0, 0xE0000, 0xFFFFF, compaq_length, compaq_decode }, - { "\252\125VPD", 0, 0xF0000, 0xFFFFF, vpd_length, vpd_decode }, - { "FJKEYINF", 0, 0xF0000, 0xFFFFF, fjkeyinf_length, fjkeyinf_decode }, - { NULL, 0, 0, 0, NULL, NULL } -}; - -/* Believe it or not, this is significantly faster than memcmp and strncmp */ -static inline int anchor_match(const struct bios_entry *entry, const char *p) -{ - size_t i; - - for(i=0; i<entry->anchor_len; i++) - if(entry->anchor[i]!=p[i]) - return 0; - - return 1; -} - -/* Return -1 on error, 0 on success */ -static int parse_command_line(int argc, char * const argv[]) -{ - int option; - const char *optstring = "d:hV"; - struct option longopts[]={ - { "dev-mem", required_argument, NULL, 'd' }, - { "help", no_argument, NULL, 'h' }, - { "version", no_argument, NULL, 'V' }, - { 0, 0, 0, 0 } - }; - - while((option=getopt_long(argc, argv, optstring, longopts, NULL))!=-1) - switch(option) - { - case 'd': - opt.devmem=optarg; - break; - case 'h': - opt.flags|=FLAG_HELP; - break; - case 'V': - opt.flags|=FLAG_VERSION; - break; - case '?': - return -1; - } - - return 0; -} - -static void print_help(void) -{ - static const char *help= - "Usage: biosdecode [OPTIONS]\n" - "Options are:\n" - " -d, --dev-mem FILE Read memory from device FILE (default: " DEFAULT_MEM_DEV ")\n" - " -h, --help Display this help text and exit\n" - " -V, --version Display the version and exit\n"; - - printf("%s", help); -} - -int main(int argc, char * const argv[]) -{ - u8 *buf; - off_t fp; - int i; - - if(sizeof(u8)!=1 || sizeof(u16)!=2 || sizeof(u32)!=4) - { - fprintf(stderr, "%s: compiler incompatibility\n", argv[0]); - exit(255); - } - - /* Set default option values */ - opt.devmem=DEFAULT_MEM_DEV; - opt.flags=0; - - if(parse_command_line(argc, argv)<0) - exit(2); - - if(opt.flags & FLAG_HELP) - { - print_help(); - return 0; - } - - if(opt.flags & FLAG_VERSION) - { - printf("%s\n", VERSION); - return 0; - } - - printf("# biosdecode %s\n", VERSION); - - if((buf=mem_chunk(0xE0000, 0x20000, opt.devmem))==NULL) - exit(1); - - /* Compute anchor lengths once and for all */ - for(i=0; bios_entries[i].anchor!=NULL; i++) - bios_entries[i].anchor_len = strlen(bios_entries[i].anchor); - - for(fp=0xE0000; fp<=0xFFFF0; fp+=16) - { - u8 *p=buf+fp-0xE0000; - - for(i=0; bios_entries[i].anchor!=NULL; i++) - { - if(anchor_match(&bios_entries[i], (char *)p) - && fp>=bios_entries[i].low_address - && fp<bios_entries[i].high_address) - { - off_t len=bios_entries[i].length(p); - - if(fp+len-1<=bios_entries[i].high_address) - { - if(bios_entries[i].decode(p, len)) - { - fp+=(((len-1)>>4)<<4); - break; - } - } - } - } - } - - free(buf); - - return 0; -} |