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/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/ioapic.h>
#include <asm/lapic.h>
u32 io_apic_read(u32 reg)
{
writel(reg, IO_APIC_INDEX);
return readl(IO_APIC_DATA);
}
void io_apic_write(u32 reg, u32 val)
{
writel(reg, IO_APIC_INDEX);
writel(val, IO_APIC_DATA);
}
void io_apic_set_id(int ioapic_id)
{
int bsp_lapicid = lapicid();
debug("IOAPIC: Initialising IOAPIC at %08x\n", IO_APIC_ADDR);
debug("IOAPIC: Bootstrap Processor Local APIC = %#02x\n", bsp_lapicid);
if (ioapic_id) {
debug("IOAPIC: ID = 0x%02x\n", ioapic_id);
/* Set IOAPIC ID if it has been specified */
io_apic_write(0x00, (io_apic_read(0x00) & 0xf0ffffff) |
(ioapic_id << 24));
}
}
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