diff options
Diffstat (limited to 'src/arch/x86/lib/cpu_common.c')
-rw-r--r-- | src/arch/x86/lib/cpu_common.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/src/arch/x86/lib/cpu_common.c b/src/arch/x86/lib/cpu_common.c deleted file mode 100644 index af0ab2ae98..0000000000 --- a/src/arch/x86/lib/cpu_common.c +++ /dev/null @@ -1,65 +0,0 @@ -#include <console/console.h> -#include <cpu/cpu.h> -#include <arch/io.h> -#include <string.h> -#include <cpu/x86/mtrr.h> -#include <cpu/x86/msr.h> -#include <cpu/x86/lapic.h> -#include <arch/cpu.h> -#include <device/path.h> -#include <device/device.h> -#include <smp/spinlock.h> - -#ifndef __x86_64__ -/* Standard macro to see if a specific flag is changeable */ -static inline int flag_is_changeable_p(uint32_t flag) -{ - uint32_t f1, f2; - - asm( - "pushfl\n\t" - "pushfl\n\t" - "popl %0\n\t" - "movl %0,%1\n\t" - "xorl %2,%0\n\t" - "pushl %0\n\t" - "popfl\n\t" - "pushfl\n\t" - "popl %0\n\t" - "popfl\n\t" - : "=&r" (f1), "=&r" (f2) - : "ir" (flag)); - return ((f1^f2) & flag) != 0; -} - -/* Probe for the CPUID instruction */ -int cpu_have_cpuid(void) -{ - return flag_is_changeable_p(X86_EFLAGS_ID); -} - -#else - -int cpu_have_cpuid(void) -{ - return 1; -} -#endif - -int cpu_cpuid_extended_level(void) -{ - return cpuid_eax(0x80000000); -} - -int cpu_phys_address_size(void) -{ - if (!(cpu_have_cpuid())) - return 32; - - if (cpu_cpuid_extended_level() >= 0x80000008) - return cpuid_eax(0x80000008) & 0xff; - - if (cpuid_edx(1) & (CPUID_FEATURE_PAE | CPUID_FEATURE_PSE36)) - return 36; - return 32; -} |