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HEAD
i5000: halt second BSP
[coreboot.git]
/
src
/
northbridge
/
intel
/
i5000
/
halt_second_bsp.S
1
/* Save BIST result */
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movl %eax, %ebp
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/* Read the semaphore register of i5000 (BOFL0).
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If it returns zero, it means there was already
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another read by another CPU */
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movl $0x800080c0, %eax
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movw $0xcf8, %dx
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outl %eax, %dx
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addw $4, %dx
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inl %dx, %eax
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cmp $0, %eax
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jne 1f
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/* degrade BSP to AP */
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mov $0x1b, %ecx
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rdmsr
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andl $(~0x100), %eax
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wrmsr
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cli
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loop: hlt
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jmp loop
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1: /* Restore BIST */
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mov %ebp, %eax