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/* SPDX-License-Identifier: GPL-2.0-only */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "msrtool.h"
/* This Darwin support requires DirectHW, which is available at
* https://www.coreboot.org/DirectHW
*/
int darwin_probe(const struct sysdef *system)
{
#ifdef __DARWIN__
return iopl(3) == 0;
#else
return 0;
#endif
}
int darwin_open(uint8_t cpu, enum SysModes mode)
{
#ifdef __DARWIN__
if (cpu > 0) {
fprintf(stderr, "%s: only core 0 is supported on Mac OS X right now.\n", __func__);
return 0;
}
return 1;
#else
return 0;
#endif
}
int darwin_close(uint8_t cpu)
{
return 1;
}
int darwin_rdmsr(uint8_t cpu, uint32_t addr, struct msr *val)
{
#ifdef __DARWIN__
msr_t msr;
msr = rdmsr(addr);
val->hi = msr.lo;
val->lo = msr.hi;
return 1;
#else
return 0;
#endif
}
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