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