diff options
Diffstat (limited to 'src/cpu/intel/car')
| -rw-r--r-- | src/cpu/intel/car/cache_as_ram_ht.inc | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/src/cpu/intel/car/cache_as_ram_ht.inc b/src/cpu/intel/car/cache_as_ram_ht.inc index 65da51631b..2a8d854a10 100644 --- a/src/cpu/intel/car/cache_as_ram_ht.inc +++ b/src/cpu/intel/car/cache_as_ram_ht.inc @@ -127,16 +127,36 @@ bsp_init: post_code(0x24) - /* For a hyper-threading processor, cache must not be disabled - * on an AP on the same physical package with the BSP. - */ - movl $01, %eax + movl $1, %eax cpuid btl $28, %edx jnc sipi_complete bswapl %ebx - cmpb $01, %bh - jbe sipi_complete + movzx %bh, %edi + cmpb $1, %bh + jbe sipi_complete /* only one LAPIC ID in package */ + + movl $0, %eax + cpuid + movb $1, %bl + cmpl $4, %eax + jb cores_counted + movl $4, %eax + movl $0, %ecx + cpuid + shr $26, %eax + movb %al, %bl + inc %bl + +cores_counted: + movl %edi, %eax + divb %bl + cmpb $1, %al + jbe sipi_complete /* only LAPIC ID of a core */ + + /* For a hyper-threading processor, cache must not be disabled + * on an AP on the same physical package with the BSP. + */ hyper_threading_cpu: @@ -202,7 +222,7 @@ ap_init: ap_halt: cli 1: hlt - jnz 1b + jmp 1b |