1 /* 2 * arch/powerpc/platforms/83xx/mpc832x_rdb.c 3 * 4 * Copyright (C) Freescale Semiconductor, Inc. 2007. All rights reserved. 5 * 6 * Description: 7 * MPC832x RDB board specific routines. 8 * This file is based on mpc832x_mds.c and mpc8313_rdb.c 9 * Author: Michael Barkowski <michael.barkowski@freescale.com> 10 * 11 * This program is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License as published by the 13 * Free Software Foundation; either version 2 of the License, or (at your 14 * option) any later version. 15 */ 16 17 #include <linux/pci.h> 18 19 #include <asm/of_platform.h> 20 #include <asm/time.h> 21 #include <asm/ipic.h> 22 #include <asm/udbg.h> 23 #include <asm/qe.h> 24 #include <asm/qe_ic.h> 25 26 #include "mpc83xx.h" 27 28 #undef DEBUG 29 #ifdef DEBUG 30 #define DBG(fmt...) udbg_printf(fmt) 31 #else 32 #define DBG(fmt...) 33 #endif 34 35 /* ************************************************************************ 36 * 37 * Setup the architecture 38 * 39 */ 40 static void __init mpc832x_rdb_setup_arch(void) 41 { 42 #if defined(CONFIG_PCI) || defined(CONFIG_QUICC_ENGINE) 43 struct device_node *np; 44 #endif 45 46 if (ppc_md.progress) 47 ppc_md.progress("mpc832x_rdb_setup_arch()", 0); 48 49 #ifdef CONFIG_PCI 50 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) 51 mpc83xx_add_bridge(np); 52 53 ppc_md.pci_exclude_device = mpc83xx_exclude_device; 54 #endif 55 56 #ifdef CONFIG_QUICC_ENGINE 57 qe_reset(); 58 59 if ((np = of_find_node_by_name(np, "par_io")) != NULL) { 60 par_io_init(np); 61 of_node_put(np); 62 63 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) 64 par_io_of_config(np); 65 } 66 #endif /* CONFIG_QUICC_ENGINE */ 67 } 68 69 static struct of_device_id mpc832x_ids[] = { 70 { .type = "soc", }, 71 { .compatible = "soc", }, 72 { .type = "qe", }, 73 { .type = "mdio", }, 74 {}, 75 }; 76 77 static int __init mpc832x_declare_of_platform_devices(void) 78 { 79 if (!machine_is(mpc832x_rdb)) 80 return 0; 81 82 /* Publish the QE devices */ 83 of_platform_bus_probe(NULL, mpc832x_ids, NULL); 84 85 return 0; 86 } 87 device_initcall(mpc832x_declare_of_platform_devices); 88 89 void __init mpc832x_rdb_init_IRQ(void) 90 { 91 92 struct device_node *np; 93 94 np = of_find_node_by_type(NULL, "ipic"); 95 if (!np) 96 return; 97 98 ipic_init(np, 0); 99 100 /* Initialize the default interrupt mapping priorities, 101 * in case the boot rom changed something on us. 102 */ 103 ipic_set_default_priority(); 104 of_node_put(np); 105 106 #ifdef CONFIG_QUICC_ENGINE 107 np = of_find_node_by_type(NULL, "qeic"); 108 if (!np) 109 return; 110 111 qe_ic_init(np, 0); 112 of_node_put(np); 113 #endif /* CONFIG_QUICC_ENGINE */ 114 } 115 116 /* 117 * Called very early, MMU is off, device-tree isn't unflattened 118 */ 119 static int __init mpc832x_rdb_probe(void) 120 { 121 unsigned long root = of_get_flat_dt_root(); 122 123 return of_flat_dt_is_compatible(root, "MPC832xRDB"); 124 } 125 126 define_machine(mpc832x_rdb) { 127 .name = "MPC832x RDB", 128 .probe = mpc832x_rdb_probe, 129 .setup_arch = mpc832x_rdb_setup_arch, 130 .init_IRQ = mpc832x_rdb_init_IRQ, 131 .get_irq = ipic_get_irq, 132 .restart = mpc83xx_restart, 133 .time_init = mpc83xx_time_init, 134 .calibrate_decr = generic_calibrate_decr, 135 .progress = udbg_progress, 136 }; 137