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

rtas.c (2987B)

      1/*
      2 * This work is licensed under the terms of the GNU GPL, version 2 or later.
      3 * See the COPYING file in the top-level directory.
      4 */
      5
      6#include "qemu/osdep.h"
      7#include "libqtest.h"
      8#include "rtas.h"
      9
     10static void qrtas_copy_args(QTestState *qts, uint64_t target_args,
     11                            uint32_t nargs, uint32_t *args)
     12{
     13    int i;
     14
     15    for (i = 0; i < nargs; i++) {
     16        qtest_writel(qts, target_args + i * sizeof(uint32_t), args[i]);
     17    }
     18}
     19
     20static void qrtas_copy_ret(QTestState *qts, uint64_t target_ret,
     21                           uint32_t nret, uint32_t *ret)
     22{
     23    int i;
     24
     25    for (i = 0; i < nret; i++) {
     26        ret[i] = qtest_readl(qts, target_ret + i * sizeof(uint32_t));
     27    }
     28}
     29
     30static uint64_t qrtas_call(QTestState *qts, QGuestAllocator *alloc,
     31                           const char *name,
     32                           uint32_t nargs, uint32_t *args,
     33                           uint32_t nret, uint32_t *ret)
     34{
     35    uint64_t res;
     36    uint64_t target_args, target_ret;
     37
     38    target_args = guest_alloc(alloc, nargs * sizeof(uint32_t));
     39    target_ret = guest_alloc(alloc, nret * sizeof(uint32_t));
     40
     41    qrtas_copy_args(qts, target_args, nargs, args);
     42    res = qtest_rtas_call(qts, name, nargs, target_args, nret, target_ret);
     43    qrtas_copy_ret(qts, target_ret, nret, ret);
     44
     45    guest_free(alloc, target_ret);
     46    guest_free(alloc, target_args);
     47
     48    return res;
     49}
     50
     51int qrtas_get_time_of_day(QTestState *qts, QGuestAllocator *alloc,
     52                          struct tm *tm, uint32_t *ns)
     53{
     54    int res;
     55    uint32_t ret[8];
     56
     57    res = qrtas_call(qts, alloc, "get-time-of-day", 0, NULL, 8, ret);
     58    if (res != 0) {
     59        return res;
     60    }
     61
     62    res = ret[0];
     63    memset(tm, 0, sizeof(*tm));
     64    tm->tm_year = ret[1] - 1900;
     65    tm->tm_mon = ret[2] - 1;
     66    tm->tm_mday = ret[3];
     67    tm->tm_hour = ret[4];
     68    tm->tm_min = ret[5];
     69    tm->tm_sec = ret[6];
     70    *ns = ret[7];
     71
     72    return res;
     73}
     74
     75uint32_t qrtas_ibm_read_pci_config(QTestState *qts, QGuestAllocator *alloc,
     76                                   uint64_t buid,
     77                                   uint32_t addr, uint32_t size)
     78{
     79    int res;
     80    uint32_t args[4], ret[2];
     81
     82    args[0] = addr;
     83    args[1] = buid >> 32;
     84    args[2] = buid & 0xffffffff;
     85    args[3] = size;
     86    res = qrtas_call(qts, alloc, "ibm,read-pci-config", 4, args, 2, ret);
     87    if (res != 0) {
     88        return -1;
     89    }
     90
     91    if (ret[0] != 0) {
     92        return -1;
     93    }
     94
     95    return ret[1];
     96}
     97
     98int qrtas_ibm_write_pci_config(QTestState *qts, QGuestAllocator *alloc,
     99                               uint64_t buid,
    100                               uint32_t addr, uint32_t size, uint32_t val)
    101{
    102    int res;
    103    uint32_t args[5], ret[1];
    104
    105    args[0] = addr;
    106    args[1] = buid >> 32;
    107    args[2] = buid & 0xffffffff;
    108    args[3] = size;
    109    args[4] = val;
    110    res = qrtas_call(qts, alloc, "ibm,write-pci-config", 5, args, 1, ret);
    111    if (res != 0) {
    112        return -1;
    113    }
    114
    115    if (ret[0] != 0) {
    116        return -1;
    117    }
    118
    119    return 0;
    120}