diff options
Diffstat (limited to 'src/cpu/x86/lapic/boot_cpu.c')
-rw-r--r-- | src/cpu/x86/lapic/boot_cpu.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/cpu/x86/lapic/boot_cpu.c b/src/cpu/x86/lapic/boot_cpu.c new file mode 100644 index 0000000000..d3a8f6e7a7 --- /dev/null +++ b/src/cpu/x86/lapic/boot_cpu.c @@ -0,0 +1,10 @@ +#include <cpu/x86/msr.h> + +int boot_cpu(void) +{ + int bsp; + msr_t msr; + msr = rdmsr(0x1b); + bsp = !!(msr.lo & (1 << 8)); + return bsp; +} |