1/* 2 * Architecture- / platform-specific boot-time initialization code for 3 * IBM PowerPC 4xx based boards. Adapted from original 4 * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek 5 * <dan@net4x.com>. 6 * 7 * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu> 8 * 9 * Rewritten and ported to the merged powerpc tree: 10 * Copyright 2007 IBM Corporation 11 * Josh Boyer <jwboyer@linux.vnet.ibm.com> 12 * 13 * 2002 (c) MontaVista, Software, Inc. This file is licensed under 14 * the terms of the GNU General Public License version 2. This program 15 * is licensed "as is" without any warranty of any kind, whether express 16 * or implied. 17 */ 18 19#include <linux/init.h> 20#include <linux/of_platform.h> 21#include <linux/rtc.h> 22 23#include <asm/machdep.h> 24#include <asm/prom.h> 25#include <asm/udbg.h> 26#include <asm/time.h> 27#include <asm/uic.h> 28#include <asm/pci-bridge.h> 29#include <asm/ppc4xx.h> 30 31static __initdata struct of_device_id walnut_of_bus[] = { 32 { .compatible = "ibm,plb3", }, 33 { .compatible = "ibm,opb", }, 34 { .compatible = "ibm,ebc", }, 35 {}, 36}; 37 38static int __init walnut_device_probe(void) 39{ 40 of_platform_bus_probe(NULL, walnut_of_bus, NULL); 41 of_instantiate_rtc(); 42 43 return 0; 44} 45machine_device_initcall(walnut, walnut_device_probe); 46 47static int __init walnut_probe(void) 48{ 49 unsigned long root = of_get_flat_dt_root(); 50 51 if (!of_flat_dt_is_compatible(root, "ibm,walnut")) 52 return 0; 53 54 ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC; 55 56 return 1; 57} 58 59define_machine(walnut) { 60 .name = "Walnut", 61 .probe = walnut_probe, 62 .progress = udbg_progress, 63 .init_IRQ = uic_init_tree, 64 .get_irq = uic_get_irq, 65 .restart = ppc4xx_reset_system, 66 .calibrate_decr = generic_calibrate_decr, 67}; 68