[Xen-changelog] Simplify x86_32 boot code by removing bogus P6 check (really it was a

[BitKeeper Bot <riel@xxxxxxxxxxx>]

ChangeSet 1.1764, 2005/06/28 09:08:24+01:00, kaf24@xxxxxxxxxxxxxxxxxxxx

        Simplify x86_32 boot code by removing bogus P6 check (really it was a
        486 check, and we can assume everyone has CPUID I think).
        Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>



 x86_32.S |   19 -------------------
 1 files changed, 19 deletions(-)


diff -Nru a/xen/arch/x86/boot/x86_32.S b/xen/arch/x86/boot/x86_32.S
--- a/xen/arch/x86/boot/x86_32.S        2005-06-28 05:02:50 -04:00
+++ b/xen/arch/x86/boot/x86_32.S        2005-06-28 05:02:50 -04:00
@@ -20,16 +20,10 @@
        /* Checksum: must be the negated sum of the first two fields. */
        .long   -0x1BADB005
         
-bad_cpu_msg:
-        .asciz "ERR: Not a P6-compatible CPU!"
 not_multiboot_msg:
         .asciz "ERR: Not a Multiboot bootloader!"
-bad_cpu:
-        mov     $bad_cpu_msg-__PAGE_OFFSET,%esi
-        jmp     print_err
 not_multiboot:
         mov     $not_multiboot_msg-__PAGE_OFFSET,%esi
-print_err:
         mov     $0xB8000,%edi  # VGA framebuffer
 1:      mov     (%esi),%bl
         test    %bl,%bl        # Terminate on '\0' sentinel
@@ -60,19 +54,6 @@
         /* Reset EFLAGS (subsumes CLI and CLD). */
        pushl   $0
        popf
-
-        /* CPU type checks. We need P6+. */
-        mov     $0x200000,%edx
-        pushfl
-        pop     %ecx
-        and     %edx,%ecx
-        jne     bad_cpu            # ID bit should be clear
-        pushl   %edx
-        popfl
-        pushfl
-        pop     %ecx
-        and     %edx,%ecx
-        je      bad_cpu            # ID bit should be set
 
         /* Set up FPU. */
         fninit

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