1 /* 2 * MPC8536 DS Board Setup 3 * 4 * Copyright 2008 Freescale Semiconductor, Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; either version 2 of the License, or (at your 9 * option) any later version. 10 */ 11 12 #include <linux/stddef.h> 13 #include <linux/kernel.h> 14 #include <linux/pci.h> 15 #include <linux/kdev_t.h> 16 #include <linux/delay.h> 17 #include <linux/seq_file.h> 18 #include <linux/interrupt.h> 19 #include <linux/of_platform.h> 20 21 #include <asm/system.h> 22 #include <asm/time.h> 23 #include <asm/machdep.h> 24 #include <asm/pci-bridge.h> 25 #include <mm/mmu_decl.h> 26 #include <asm/prom.h> 27 #include <asm/udbg.h> 28 #include <asm/mpic.h> 29 30 #include <sysdev/fsl_soc.h> 31 #include <sysdev/fsl_pci.h> 32 33 void __init mpc8536_ds_pic_init(void) 34 { 35 struct mpic *mpic; 36 struct resource r; 37 struct device_node *np; 38 39 np = of_find_node_by_type(NULL, "open-pic"); 40 if (np == NULL) { 41 printk(KERN_ERR "Could not find open-pic node\n"); 42 return; 43 } 44 45 if (of_address_to_resource(np, 0, &r)) { 46 printk(KERN_ERR "Failed to map mpic register space\n"); 47 of_node_put(np); 48 return; 49 } 50 51 mpic = mpic_alloc(np, r.start, 52 MPIC_PRIMARY | MPIC_WANTS_RESET | 53 MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, 54 0, 256, " OpenPIC "); 55 BUG_ON(mpic == NULL); 56 of_node_put(np); 57 58 mpic_init(mpic); 59 } 60 61 /* 62 * Setup the architecture 63 */ 64 static void __init mpc8536_ds_setup_arch(void) 65 { 66 #ifdef CONFIG_PCI 67 struct device_node *np; 68 #endif 69 70 if (ppc_md.progress) 71 ppc_md.progress("mpc8536_ds_setup_arch()", 0); 72 73 #ifdef CONFIG_PCI 74 for_each_node_by_type(np, "pci") { 75 if (of_device_is_compatible(np, "fsl,mpc8540-pci") || 76 of_device_is_compatible(np, "fsl,mpc8548-pcie")) { 77 struct resource rsrc; 78 of_address_to_resource(np, 0, &rsrc); 79 if ((rsrc.start & 0xfffff) == 0x8000) 80 fsl_add_bridge(np, 1); 81 else 82 fsl_add_bridge(np, 0); 83 } 84 } 85 86 #endif 87 88 printk("MPC8536 DS board from Freescale Semiconductor\n"); 89 } 90 91 static struct of_device_id __initdata mpc8536_ds_ids[] = { 92 { .type = "soc", }, 93 { .compatible = "soc", }, 94 { .compatible = "simple-bus", }, 95 { .compatible = "gianfar", }, 96 {}, 97 }; 98 99 static int __init mpc8536_ds_publish_devices(void) 100 { 101 return of_platform_bus_probe(NULL, mpc8536_ds_ids, NULL); 102 } 103 machine_device_initcall(mpc8536_ds, mpc8536_ds_publish_devices); 104 105 /* 106 * Called very early, device-tree isn't unflattened 107 */ 108 static int __init mpc8536_ds_probe(void) 109 { 110 unsigned long root = of_get_flat_dt_root(); 111 112 return of_flat_dt_is_compatible(root, "fsl,mpc8536ds"); 113 } 114 115 define_machine(mpc8536_ds) { 116 .name = "MPC8536 DS", 117 .probe = mpc8536_ds_probe, 118 .setup_arch = mpc8536_ds_setup_arch, 119 .init_IRQ = mpc8536_ds_pic_init, 120 #ifdef CONFIG_PCI 121 .pcibios_fixup_bus = fsl_pcibios_fixup_bus, 122 #endif 123 .get_irq = mpic_get_irq, 124 .restart = fsl_rstcr_restart, 125 .calibrate_decr = generic_calibrate_decr, 126 .progress = udbg_progress, 127 }; 128