1/* 2 * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved. 3 * 4 * Description: 5 * MPC832xE MDS board specific routines. 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 */ 12 13#include <linux/stddef.h> 14#include <linux/kernel.h> 15#include <linux/init.h> 16#include <linux/errno.h> 17#include <linux/reboot.h> 18#include <linux/pci.h> 19#include <linux/kdev_t.h> 20#include <linux/major.h> 21#include <linux/console.h> 22#include <linux/delay.h> 23#include <linux/seq_file.h> 24#include <linux/root_dev.h> 25#include <linux/initrd.h> 26 27#include <asm/of_device.h> 28#include <asm/of_platform.h> 29#include <asm/system.h> 30#include <asm/atomic.h> 31#include <asm/time.h> 32#include <asm/io.h> 33#include <asm/machdep.h> 34#include <asm/ipic.h> 35#include <asm/bootinfo.h> 36#include <asm/irq.h> 37#include <asm/prom.h> 38#include <asm/udbg.h> 39#include <sysdev/fsl_soc.h> 40#include <asm/qe.h> 41#include <asm/qe_ic.h> 42 43#include "mpc83xx.h" 44 45#undef DEBUG 46#ifdef DEBUG 47#define DBG(fmt...) udbg_printf(fmt) 48#else 49#define DBG(fmt...) 50#endif 51 52#ifndef CONFIG_PCI 53unsigned long isa_io_base = 0; 54unsigned long isa_mem_base = 0; 55#endif 56 57static u8 *bcsr_regs = NULL; 58 59/* ************************************************************************ 60 * 61 * Setup the architecture 62 * 63 */ 64static void __init mpc832x_sys_setup_arch(void) 65{ 66 struct device_node *np; 67 68 if (ppc_md.progress) 69 ppc_md.progress("mpc832x_sys_setup_arch()", 0); 70 71 /* Map BCSR area */ 72 np = of_find_node_by_name(NULL, "bcsr"); 73 if (np != 0) { 74 struct resource res; 75 76 of_address_to_resource(np, 0, &res); 77 bcsr_regs = ioremap(res.start, res.end - res.start +1); 78 of_node_put(np); 79 } 80 81#ifdef CONFIG_PCI 82 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) 83 add_bridge(np); 84 ppc_md.pci_exclude_device = mpc83xx_exclude_device; 85#endif 86 87#ifdef CONFIG_QUICC_ENGINE 88 qe_reset(); 89 90 if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) { 91 par_io_init(np); 92 of_node_put(np); 93 94 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) 95 par_io_of_config(np); 96 } 97 98 if ((np = of_find_compatible_node(NULL, "network", "ucc_geth")) 99 != NULL){ 100 /* Reset the Ethernet PHY */ 101 bcsr_regs[9] &= ~0x20; 102 udelay(1000); 103 bcsr_regs[9] |= 0x20; 104 iounmap(bcsr_regs); 105 of_node_put(np); 106 } 107#endif /* CONFIG_QUICC_ENGINE */ 108} 109 110static struct of_device_id mpc832x_ids[] = { 111 { .type = "soc", }, 112 { .compatible = "soc", }, 113 { .type = "qe", }, 114 { .type = "mdio", }, 115 {}, 116}; 117 118static int __init mpc832x_declare_of_platform_devices(void) 119{ 120 if (!machine_is(mpc832x_mds)) 121 return 0; 122 123 /* Publish the QE devices */ 124 of_platform_bus_probe(NULL, mpc832x_ids, NULL); 125 126 return 0; 127} 128device_initcall(mpc832x_declare_of_platform_devices); 129 130static void __init mpc832x_sys_init_IRQ(void) 131{ 132 struct device_node *np; 133 134 np = of_find_node_by_type(NULL, "ipic"); 135 if (!np) 136 return; 137 138 ipic_init(np, 0); 139 140 /* Initialize the default interrupt mapping priorities, 141 * in case the boot rom changed something on us. 142 */ 143 ipic_set_default_priority(); 144 of_node_put(np); 145 146#ifdef CONFIG_QUICC_ENGINE 147 np = of_find_node_by_type(NULL, "qeic"); 148 if (!np) 149 return; 150 151 qe_ic_init(np, 0); 152 of_node_put(np); 153#endif /* CONFIG_QUICC_ENGINE */ 154} 155 156#if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374) 157extern ulong ds1374_get_rtc_time(void); 158extern int ds1374_set_rtc_time(ulong); 159 160static int __init mpc832x_rtc_hookup(void) 161{ 162 struct timespec tv; 163 164 if (!machine_is(mpc832x_mds)) 165 return 0; 166 167 ppc_md.get_rtc_time = ds1374_get_rtc_time; 168 ppc_md.set_rtc_time = ds1374_set_rtc_time; 169 170 tv.tv_nsec = 0; 171 tv.tv_sec = (ppc_md.get_rtc_time) (); 172 do_settimeofday(&tv); 173 174 return 0; 175} 176 177late_initcall(mpc832x_rtc_hookup); 178#endif 179 180/* 181 * Called very early, MMU is off, device-tree isn't unflattened 182 */ 183static int __init mpc832x_sys_probe(void) 184{ 185 unsigned long root = of_get_flat_dt_root(); 186 187 return of_flat_dt_is_compatible(root, "MPC832xMDS"); 188} 189 190define_machine(mpc832x_mds) { 191 .name = "MPC832x MDS", 192 .probe = mpc832x_sys_probe, 193 .setup_arch = mpc832x_sys_setup_arch, 194 .init_IRQ = mpc832x_sys_init_IRQ, 195 .get_irq = ipic_get_irq, 196 .restart = mpc83xx_restart, 197 .time_init = mpc83xx_time_init, 198 .calibrate_decr = generic_calibrate_decr, 199 .progress = udbg_progress, 200}; 201