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/*
* From coreboot file of same name
*
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright (C) 2014 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <asm/lapic.h>
#include <asm/post.h>
void lapic_setup(void)
{
#ifdef CONFIG_SMP
/* Only Pentium Pro and later have those MSR stuff */
debug("Setting up local apic: ");
/* Enable the local apic */
enable_lapic();
/* Set Task Priority to 'accept all' */
lapic_write_around(LAPIC_TASKPRI,
lapic_read_around(LAPIC_TASKPRI) & ~LAPIC_TPRI_MASK);
/* Put the local apic in virtual wire mode */
lapic_write_around(LAPIC_SPIV, (lapic_read_around(LAPIC_SPIV) &
~(LAPIC_VECTOR_MASK)) | LAPIC_SPIV_ENABLE);
lapic_write_around(LAPIC_LVT0, (lapic_read_around(LAPIC_LVT0) &
~(LAPIC_LVT_MASKED | LAPIC_LVT_LEVEL_TRIGGER |
LAPIC_LVT_REMOTE_IRR | LAPIC_INPUT_POLARITY |
LAPIC_SEND_PENDING | LAPIC_LVT_RESERVED_1 |
LAPIC_DELIVERY_MODE_MASK)) |
(LAPIC_LVT_REMOTE_IRR | LAPIC_SEND_PENDING |
LAPIC_DELIVERY_MODE_EXTINT));
lapic_write_around(LAPIC_LVT1, (lapic_read_around(LAPIC_LVT1) &
~(LAPIC_LVT_MASKED | LAPIC_LVT_LEVEL_TRIGGER |
LAPIC_LVT_REMOTE_IRR | LAPIC_INPUT_POLARITY |
LAPIC_SEND_PENDING | LAPIC_LVT_RESERVED_1 |
LAPIC_DELIVERY_MODE_MASK)) |
(LAPIC_LVT_REMOTE_IRR | LAPIC_SEND_PENDING |
LAPIC_DELIVERY_MODE_NMI));
debug("apic_id: 0x%02lx, ", lapicid());
#else /* !CONFIG_SMP */
/* Only Pentium Pro and later have those MSR stuff */
debug("Disabling local apic: ");
disable_lapic();
#endif /* CONFIG_SMP */
debug("done.\n");
post_code(POST_LAPIC);
}
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