118 lines
3.9 KiB
C
118 lines
3.9 KiB
C
#include "dmi.h"
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#include <stdlib.h>
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LPBYTE dmi_table = NULL;
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WORD dmi_size = 0;
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WORD _dmi_max = 0;
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DMI_BIOS deafult_dmi_bios = {
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.Head.Type = 0x00,
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.Head.Length = 0x12,
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.Head.Handle = 0x0000,
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.Vendor = 0x01, // "American Megatrends Inc."
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.Version = 0x02, // "080015 "
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.StartSegment = 0x0000, // '00 f0'h
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.ReleaseDate = 0x03, // "07/28/2011"
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.ROMSize = 0x00, // 03h
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.Chars = 0x1f, // '1F 90 DA 8B'h
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.VerMajor = 0x08,
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.VerMinor = 0x0f,
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.ECVerMajor = 0xff,
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.ECVerMinor = 0xff,
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};
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DMI_SYSTEM default_dmi_system = {
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.Head.Type = 0x01,
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.Head.Length = 0x08,
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.Head.Handle = 0x0001,
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.Manufacturer = 0x01, // "NEC"
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.ProductName = 0x02, // "To Be Filled By O.E.M."
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.Version = 0x03, // "To Be Filled By O.E.M."
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.Serial = 0x04, // "To Be Filled By O.E.M."
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};
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DMI_STRING deafult_dmi_string = {
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.Head.Type = 0x0b,
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.Head.Length = 0x05,
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.Head.Handle = 0x0002,
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.NoStrings = 0x00,
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};
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static void dmi_init(void) {
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if (dmi_table) free(dmi_table);
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_dmi_max = 0xff;
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dmi_table = (LPBYTE)malloc(_dmi_max);
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memset(dmi_table, 0, _dmi_max);
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dmi_size = 0;
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}
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static void dmi_append(void* data, WORD size) {
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if (!dmi_table) return;
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while (dmi_size + (size + 1) >= _dmi_max) {
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LPBYTE new_table = (LPBYTE)realloc(dmi_table, _dmi_max += 0xff);
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if (!new_table) return;
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dmi_table = new_table;
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}
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memcpy(dmi_table + dmi_size, data, size);
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dmi_size += size;
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dmi_table[dmi_size++] = 0;
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dmi_table[dmi_size++] = 0;
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}
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static void dmi_append_with_strings(void* data, WORD size, int num_strings, ...) {
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va_list args;
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va_start(args, num_strings);
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dmi_append(data, size);
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dmi_size -= 2;
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for (int i = 0; i < num_strings; i++) {
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char* str = va_arg(args, char*);
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WORD len = strlen(str) & 0xffff;
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memcpy((char*)dmi_table + dmi_size, str, len + 1);
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dmi_size += len + 1;
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dmi_table[dmi_size - 1] = 0;
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}
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dmi_table[dmi_size++] = 0;
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va_end(args);
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}
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void dmi_build_default() {
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dmi_init();
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dmi_append_with_strings(&deafult_dmi_bios, sizeof deafult_dmi_bios, 3,
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"American Megatrends Inc.", "080015 ", "07/28/2011");
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// Platform AAM: Board type one of "Supermicro"(=1) or "Advantech"(=2)
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// Platform AAL: Board type one of "NEC"(=0) or "AAL2"(=3)
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dmi_append_with_strings(&default_dmi_system, sizeof default_dmi_system, 4, "NEC",
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"To Be Filled By O.E.M.", "To Be Filled By O.E.M.",
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"To Be Filled By O.E.M.");
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deafult_dmi_string.NoStrings = 5;
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dmi_append_with_strings(&deafult_dmi_string, sizeof deafult_dmi_string,
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// OEM strings:
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// 0: ??
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// 1: ??
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// 2: Platform ID (AAL, AAM)
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// AAL = Nvidia drivers
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// AAM = AMD drivers
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// *** = No dedicated drivers
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// 3: ??
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// 4: Board type (AAL, NEC, AAL2, " ", AAM, Supermicro, Advantech)
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// If present -> makes board = 4
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// AAL = 4
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// AAM = 4
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// Supermicro = 4
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// Advantech = 4
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// These values are pulled from an 846-5004D
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5, "DAC-BJ02", "DAC-BJ02", "AAL", "Advantech", "AAL2");
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}
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BYTE dmi_calc_checksum(const char* buf, int len) {
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int sum = 0;
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int a;
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for (a = 0; a < len; a++) sum += buf[a];
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return (BYTE)(sum == 0);
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} |