Patrick Georgi | ac95903 | 2020-05-05 22:49:26 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Stefan Reinauer | 37f3935 | 2009-09-01 10:03:01 +0000 | [diff] [blame] | 2 | |
| 3 | #include <sys/types.h> |
| 4 | #include <sys/stat.h> |
| 5 | #include <fcntl.h> |
| 6 | #include <unistd.h> |
| 7 | #include <string.h> |
| 8 | #include <errno.h> |
| 9 | |
| 10 | #include "msrtool.h" |
| 11 | |
Stefan Reinauer | 9018b6e | 2011-03-14 09:08:27 +0000 | [diff] [blame] | 12 | /* This Darwin support requires DirectHW, which is available at |
Paul Menzel | a8843de | 2017-06-05 12:33:23 +0200 | [diff] [blame] | 13 | * https://www.coreboot.org/DirectHW |
Peter Stuge | 34b876c | 2009-11-16 17:29:22 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
Stefan Reinauer | 37f3935 | 2009-09-01 10:03:01 +0000 | [diff] [blame] | 16 | int darwin_probe(const struct sysdef *system) |
| 17 | { |
| 18 | #ifdef __DARWIN__ |
| 19 | return iopl(3) == 0; |
| 20 | #else |
| 21 | return 0; |
| 22 | #endif |
| 23 | } |
| 24 | |
| 25 | int darwin_open(uint8_t cpu, enum SysModes mode) |
| 26 | { |
Stefan Reinauer | 84d69f7 | 2009-10-05 10:23:36 +0000 | [diff] [blame] | 27 | #ifdef __DARWIN__ |
Stefan Reinauer | 37f3935 | 2009-09-01 10:03:01 +0000 | [diff] [blame] | 28 | if (cpu > 0) { |
| 29 | fprintf(stderr, "%s: only core 0 is supported on Mac OS X right now.\n", __func__); |
| 30 | return 0; |
| 31 | } |
| 32 | return 1; |
Stefan Reinauer | 84d69f7 | 2009-10-05 10:23:36 +0000 | [diff] [blame] | 33 | #else |
| 34 | return 0; |
| 35 | #endif |
Stefan Reinauer | 37f3935 | 2009-09-01 10:03:01 +0000 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | int darwin_close(uint8_t cpu) |
| 39 | { |
| 40 | return 1; |
| 41 | } |
| 42 | |
| 43 | int darwin_rdmsr(uint8_t cpu, uint32_t addr, struct msr *val) |
| 44 | { |
Stefan Reinauer | 84d69f7 | 2009-10-05 10:23:36 +0000 | [diff] [blame] | 45 | #ifdef __DARWIN__ |
Stefan Reinauer | 37f3935 | 2009-09-01 10:03:01 +0000 | [diff] [blame] | 46 | msr_t msr; |
| 47 | |
| 48 | msr = rdmsr(addr); |
| 49 | |
| 50 | val->hi = msr.lo; |
| 51 | val->lo = msr.hi; |
| 52 | return 1; |
Stefan Reinauer | 84d69f7 | 2009-10-05 10:23:36 +0000 | [diff] [blame] | 53 | #else |
| 54 | return 0; |
| 55 | #endif |
Stefan Reinauer | 37f3935 | 2009-09-01 10:03:01 +0000 | [diff] [blame] | 56 | } |