arch/x86/kernel/devicetree.c

/*
 * Architecture specific OF callbacks.
 */
#include <linux/bootmem.h>
#include <linux/io.h>
#include <linux/list.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <linux/slab.h>

char __initdata cmd_line[COMMAND_LINE_SIZE];

unsigned int irq_create_of_mapping(struct device_node *controller,
				   const u32 *intspec, unsigned int intsize)
{
	return intspec[0];

}
EXPORT_SYMBOL_GPL(irq_create_of_mapping);

unsigned long pci_address_to_pio(phys_addr_t address)
{
	/*
	 * The ioport address can be directly used by inX / outX
	 */
	BUG_ON(address >= (1 << 16));
	return (unsigned long)address;
}
EXPORT_SYMBOL_GPL(pci_address_to_pio);

void __init early_init_dt_scan_chosen_arch(unsigned long node)
{
	BUG();
}

void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
	BUG();
}

void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
{
	return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS));
}

void __init add_dtb(u64 data)
{
	initial_boot_params = phys_to_virt((u64) (u32) data +
				offsetof(struct setup_data, data));
}