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/*
* ARM64 Specific Low-Level ACPI Boot Support
*
* Copyright (C) 2013-2014, Linaro Ltd.
* Author: Al Stone <al.stone@linaro.org>
* Author: Graeme Gregory <graeme.gregory@linaro.org>
* Author: Hanjun Guo <hanjun.guo@linaro.org>
* Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
* Author: Naresh Bhat <naresh.bhat@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/cpumask.h>
#include <linux/memblock.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/bootmem.h>
#include <linux/smp.h>
int acpi_noirq; /* skip ACPI IRQ initialization */
int acpi_disabled;
EXPORT_SYMBOL(acpi_disabled);
int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
EXPORT_SYMBOL(acpi_pci_disabled);
/*
* __acpi_map_table() will be called before page_init(), so early_ioremap()
* or early_memremap() should be called here to for ACPI table mapping.
*/
char *__init __acpi_map_table(unsigned long phys, unsigned long size)
{
if (!phys || !size)
return NULL;
return early_memremap(phys, size);
}
void __init __acpi_unmap_table(char *map, unsigned long size)
{
if (!map || !size)
return;
early_memunmap(map, size);
}
/*
* acpi_boot_table_init() called from setup_arch(), always.
* 1. find RSDP and get its address, and then find XSDT
* 2. extract all tables and checksums them all
*
* We can parse ACPI boot-time tables such as MADT after
* this function is called.
*/
void __init acpi_boot_table_init(void)
{
/* If acpi_disabled, bail out */
if (acpi_disabled)
return;
/* Initialize the ACPI boot-time table parser. */
if (acpi_table_init())
disable_acpi();
}
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