u-boot/arch/x86/cpu/baytrail/pci.c

/*
 * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <pci.h>
#include <asm/pci.h>
#include <asm/fsp/fsp_support.h>

DECLARE_GLOBAL_DATA_PTR;

void board_pci_setup_hose(struct pci_controller *hose)
{
	hose->first_busno = 0;
	hose->last_busno = 0;

	/* PCI memory space */
	pci_set_region(hose->regions + 0,
		       CONFIG_PCI_MEM_BUS,
		       CONFIG_PCI_MEM_PHYS,
		       CONFIG_PCI_MEM_SIZE,
		       PCI_REGION_MEM);

	/* PCI IO space */
	pci_set_region(hose->regions + 1,
		       CONFIG_PCI_IO_BUS,
		       CONFIG_PCI_IO_PHYS,
		       CONFIG_PCI_IO_SIZE,
		       PCI_REGION_IO);

	pci_set_region(hose->regions + 2,
		       CONFIG_PCI_PREF_BUS,
		       CONFIG_PCI_PREF_PHYS,
		       CONFIG_PCI_PREF_SIZE,
		       PCI_REGION_PREFETCH);

	pci_set_region(hose->regions + 3,
		       0,
		       0,
		       gd->ram_size < 0x80000000 ? gd->ram_size : 0x80000000,
		       PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);

	hose->region_count = 4;
}