diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2007-07-11 12:18:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-12 10:55:56 -0700 |
| commit | c39736823232bc3ca113c8228fa852c09fba300e (patch) | |
| tree | 94fe2f8b27879cee904b09d1effb91ccc3ce6e0a /arch/i386/kernel/verify_cpu.S | |
| parent | 91a6c462b02d8dc02dbe95e5a407d78078a38d01 (diff) | |
| download | talos-op-linux-c39736823232bc3ca113c8228fa852c09fba300e.tar.gz talos-op-linux-c39736823232bc3ca113c8228fa852c09fba300e.zip | |
Remove old i386 setup code
This removes the old i386 setup code. This is done as a separate patch
to avoid breaking git bisect as some of the i386 code was also used by
the old x86-64 code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/i386/kernel/verify_cpu.S')
| -rw-r--r-- | arch/i386/kernel/verify_cpu.S | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/arch/i386/kernel/verify_cpu.S b/arch/i386/kernel/verify_cpu.S deleted file mode 100644 index fff4aa61d7c3..000000000000 --- a/arch/i386/kernel/verify_cpu.S +++ /dev/null @@ -1,94 +0,0 @@ -/* Check if CPU has some minimum CPUID bits - This runs in 16bit mode so that the caller can still use the BIOS - to output errors on the screen */ -#include <asm/cpufeature.h> -#include <asm/msr.h> - -verify_cpu: - pushfl # Save caller passed flags - pushl $0 # Kill any dangerous flags - popfl - -#if CONFIG_X86_MINIMUM_CPU_FAMILY >= 4 - pushfl - pop %eax - orl $(1<<18),%eax # try setting AC - push %eax - popfl - pushfl - popl %eax - testl $(1<<18),%eax - jz bad -#endif -#if REQUIRED_MASK0 != 0 - pushfl # standard way to check for cpuid - popl %eax - movl %eax,%ebx - xorl $0x200000,%eax - pushl %eax - popfl - pushfl - popl %eax - cmpl %eax,%ebx - pushfl # standard way to check for cpuid - popl %eax - movl %eax,%ebx - xorl $0x200000,%eax - pushl %eax - popfl - pushfl - popl %eax - cmpl %eax,%ebx - jz bad # REQUIRED_MASK0 != 0 requires CPUID - - movl $0x0,%eax # See if cpuid 1 is implemented - cpuid - cmpl $0x1,%eax - jb bad # no cpuid 1 - -#if REQUIRED_MASK0 & NEED_CMPXCHG64 - /* Some VIA C3s need magic MSRs to enable CX64. Do this here */ - cmpl $0x746e6543,%ebx # Cent - jne 1f - cmpl $0x48727561,%edx # aurH - jne 1f - cmpl $0x736c7561,%ecx # auls - jne 1f - movl $1,%eax # check model - cpuid - movl %eax,%ebx - shr $8,%ebx - andl $0xf,%ebx - cmp $6,%ebx # check family == 6 - jne 1f - shr $4,%eax - andl $0xf,%eax - cmpl $6,%eax # check model >= 6 - jb 1f - # assume models >= 6 all support this MSR - movl $MSR_VIA_FCR,%ecx - rdmsr - orl $((1<<1)|(1<<7)),%eax # enable CMPXCHG64 and PGE - wrmsr -1: -#endif - movl $0x1,%eax # Does the cpu have what it takes - cpuid - -#if CONFIG_X86_MINIMUM_CPU_FAMILY > 4 -#error add proper model checking here -#endif - - andl $REQUIRED_MASK0,%edx - xorl $REQUIRED_MASK0,%edx - jnz bad -#endif /* REQUIRED_MASK0 */ - - popfl - xor %eax,%eax - ret - -bad: - popfl - movl $1,%eax - ret |
