113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
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#include "../include/cmos.h"
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#include "../include/memory.h"
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#include "../include/io.h"
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#include "../include/vga.h"
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#include "../include/common.h"
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static void cpuid(unsigned int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx) {
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*eax = op;
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*ecx = 0;
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asm volatile("cpuid"
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: "=a" (*eax), //输出参数
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"=b" (*ebx),
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"=c" (*ecx),
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"=d" (*edx)
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: "0" (*eax), "2" (*ecx) //输入参数
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: "memory");
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}
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static void get_vendor_name(cpu_t *c) {
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int cpuid_level;
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char x86_vendor_id[16] = {0};
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cpuid(0x00000000, (unsigned int *) &cpuid_level,
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(unsigned int *) &x86_vendor_id[0],
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(unsigned int *) &x86_vendor_id[8],
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(unsigned int *) &x86_vendor_id[4]);
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c->vendor = x86_vendor_id;
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}
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static void get_model_name(cpu_t *c) {
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unsigned int *v = (unsigned int *) c->model_name;
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cpuid(0x80000002, &v[0], &v[1], &v[2], &v[3]);
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cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]);
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cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]);
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c->model_name[48] = 0;
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}
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static void get_cpu_address_sizes(cpu_t *c) {
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unsigned int eax, ebx, ecx, edx;
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cpuid(0x80000008, &eax, &ebx, &ecx, &edx);
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c->virt_bits = (eax >> 8) & 0xff;
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c->phys_bits = eax & 0xff;
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}
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void print_cpu_id() {
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cpu_t *c = (cpu_t *) kmalloc(sizeof(cpu_t));
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get_vendor_name(c);
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get_model_name(c);
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get_cpu_address_sizes(c);
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printf("CPU Vendor: %s\n", c->vendor);
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printf("CPU Name: %s\n", c->model_name);
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printf("CPU Cache: %d\n",c->phys_bits);
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printf("CPU Virtual Address: 0x%x\n",c->virt_bits);
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kfree(c);
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}
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uint8_t read_cmos(uint8_t p) {
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uint8_t data;
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outb(CMOS_INDEX, p);
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data = inb(CMOS_DATA);
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outb(CMOS_INDEX, 0x80);
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return data;
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}
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static uint32_t get_hour() {
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return bcd2hex(read_cmos(CMOS_CUR_HOUR));
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}
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;static uint32_t get_min() {
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return bcd2hex(read_cmos(CMOS_CUR_MIN));
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}
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static uint32_t get_sec() {
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return bcd2hex(read_cmos(CMOS_CUR_SEC));
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}
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static uint32_t get_day_of_month() {
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return bcd2hex(read_cmos(CMOS_MON_DAY));
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}
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static uint32_t get_day_of_week() {
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return bcd2hex(read_cmos(CMOS_WEEK_DAY));
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}
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static uint32_t get_mon() {
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return bcd2hex(read_cmos(CMOS_CUR_MON));
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}
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static uint32_t get_year() {
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return (bcd2hex(read_cmos(CMOS_CUR_CEN)) * 100) + bcd2hex(read_cmos(CMOS_CUR_YEAR)) + 1980;
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}
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static int is_leap_year(int year) {
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if (year % 4 != 0) return 0;
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if (year % 400 == 0) return 1;
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return year % 100 != 0;
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}
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char *get_date_time() {
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char *s = (char *) kmalloc(40);
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int year = get_year(), month = get_mon(), day = get_day_of_month();
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int hour = get_hour(), min = get_min(), sec = get_sec();
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int day_of_months[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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if (is_leap_year(year)) day_of_months[2]++;
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#ifdef NEED_UTC_8
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hour += 8;
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if (hour >= 24) hour -= 24, day++;
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if (day > day_of_months[month]) day = 1, month++;
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if (month > 12) month = 1, year++;
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#endif
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sprintf(s, "%d/%d/%d %d:%d:%d", year, month, day, hour, min, sec);
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return s;
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}
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