1 /* 2 * MPC85xx RDB Board Setup 3 * 4 * Copyright 2009 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 #undef DEBUG 34 35 #ifdef DEBUG 36 #define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 37 #else 38 #define DBG(fmt, args...) 39 #endif 40 41 42 void __init mpc85xx_rdb_pic_init(void) 43 { 44 struct mpic *mpic; 45 struct resource r; 46 struct device_node *np; 47 48 np = of_find_node_by_type(NULL, "open-pic"); 49 if (np == NULL) { 50 printk(KERN_ERR "Could not find open-pic node\n"); 51 return; 52 } 53 54 if (of_address_to_resource(np, 0, &r)) { 55 printk(KERN_ERR "Failed to map mpic register space\n"); 56 of_node_put(np); 57 return; 58 } 59 60 mpic = mpic_alloc(np, r.start, 61 MPIC_PRIMARY | MPIC_WANTS_RESET | 62 MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | 63 MPIC_SINGLE_DEST_CPU, 64 0, 256, " OpenPIC "); 65 66 BUG_ON(mpic == NULL); 67 of_node_put(np); 68 69 mpic_init(mpic); 70 71 } 72 73 /* 74 * Setup the architecture 75 */ 76 #ifdef CONFIG_SMP 77 extern void __init mpc85xx_smp_init(void); 78 #endif 79 static void __init mpc85xx_rdb_setup_arch(void) 80 { 81 #ifdef CONFIG_PCI 82 struct device_node *np; 83 #endif 84 85 if (ppc_md.progress) 86 ppc_md.progress("mpc85xx_rdb_setup_arch()", 0); 87 88 #ifdef CONFIG_PCI 89 for_each_node_by_type(np, "pci") { 90 if (of_device_is_compatible(np, "fsl,mpc8548-pcie")) 91 fsl_add_bridge(np, 0); 92 } 93 94 #endif 95 96 #ifdef CONFIG_SMP 97 mpc85xx_smp_init(); 98 #endif 99 100 printk(KERN_INFO "MPC85xx RDB board from Freescale Semiconductor\n"); 101 } 102 103 static struct of_device_id __initdata mpc85xxrdb_ids[] = { 104 { .type = "soc", }, 105 { .compatible = "soc", }, 106 { .compatible = "simple-bus", }, 107 { .compatible = "gianfar", }, 108 {}, 109 }; 110 111 static int __init mpc85xxrdb_publish_devices(void) 112 { 113 return of_platform_bus_probe(NULL, mpc85xxrdb_ids, NULL); 114 } 115 machine_device_initcall(p2020_rdb, mpc85xxrdb_publish_devices); 116 117 /* 118 * Called very early, device-tree isn't unflattened 119 */ 120 static int __init p2020_rdb_probe(void) 121 { 122 unsigned long root = of_get_flat_dt_root(); 123 124 if (of_flat_dt_is_compatible(root, "fsl,P2020RDB")) 125 return 1; 126 return 0; 127 } 128 129 define_machine(p2020_rdb) { 130 .name = "P2020 RDB", 131 .probe = p2020_rdb_probe, 132 .setup_arch = mpc85xx_rdb_setup_arch, 133 .init_IRQ = mpc85xx_rdb_pic_init, 134 #ifdef CONFIG_PCI 135 .pcibios_fixup_bus = fsl_pcibios_fixup_bus, 136 #endif 137 .get_irq = mpic_get_irq, 138 .restart = fsl_rstcr_restart, 139 .calibrate_decr = generic_calibrate_decr, 140 .progress = udbg_progress, 141 }; 142