cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

mc146818rtc_regs.h (2643B)

      1/*
      2 * QEMU MC146818 RTC emulation
      3 *
      4 * Copyright (c) 2003-2004 Fabrice Bellard
      5 *
      6 * Permission is hereby granted, free of charge, to any person obtaining a copy
      7 * of this software and associated documentation files (the "Software"), to deal
      8 * in the Software without restriction, including without limitation the rights
      9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     10 * copies of the Software, and to permit persons to whom the Software is
     11 * furnished to do so, subject to the following conditions:
     12 *
     13 * The above copyright notice and this permission notice shall be included in
     14 * all copies or substantial portions of the Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     22 * THE SOFTWARE.
     23 */
     24
     25#ifndef HW_RTC_MC146818RTC_REGS_H
     26#define HW_RTC_MC146818RTC_REGS_H
     27
     28#include "qemu/timer.h"
     29#include "qemu/host-utils.h"
     30
     31#define RTC_SECONDS             0
     32#define RTC_SECONDS_ALARM       1
     33#define RTC_MINUTES             2
     34#define RTC_MINUTES_ALARM       3
     35#define RTC_HOURS               4
     36#define RTC_HOURS_ALARM         5
     37#define RTC_ALARM_DONT_CARE    0xC0
     38
     39#define RTC_DAY_OF_WEEK         6
     40#define RTC_DAY_OF_MONTH        7
     41#define RTC_MONTH               8
     42#define RTC_YEAR                9
     43
     44#define RTC_REG_A               10
     45#define RTC_REG_B               11
     46#define RTC_REG_C               12
     47#define RTC_REG_D               13
     48
     49/* PC cmos mappings */
     50#define RTC_CENTURY              0x32
     51#define RTC_IBM_PS2_CENTURY_BYTE 0x37
     52
     53#define REG_A_UIP 0x80
     54
     55#define REG_B_SET  0x80
     56#define REG_B_PIE  0x40
     57#define REG_B_AIE  0x20
     58#define REG_B_UIE  0x10
     59#define REG_B_SQWE 0x08
     60#define REG_B_DM   0x04
     61#define REG_B_24H  0x02
     62
     63#define REG_C_UF   0x10
     64#define REG_C_IRQF 0x80
     65#define REG_C_PF   0x40
     66#define REG_C_AF   0x20
     67#define REG_C_MASK 0x70
     68
     69static inline uint32_t periodic_period_to_clock(int period_code)
     70{
     71    if (!period_code) {
     72        return 0;
     73   }
     74
     75    if (period_code <= 2) {
     76        period_code += 7;
     77    }
     78    /* period in 32 Khz cycles */
     79   return 1 << (period_code - 1);
     80}
     81
     82#define RTC_CLOCK_RATE            32768
     83
     84static inline int64_t periodic_clock_to_ns(int64_t clocks)
     85{
     86    return muldiv64(clocks, NANOSECONDS_PER_SECOND, RTC_CLOCK_RATE);
     87}
     88
     89#endif