1/* 2 * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved. 3 * 4 * Author: Li Yang <LeoLi@freescale.com> 5 * Yin Olivia <Hong-hua.Yin@freescale.com> 6 * 7 * Description: 8 * MPC8360E MDS board specific routines. 9 * 10 * Changelog: 11 * Jun 21, 2006 Initial version 12 * 13 * This program is free software; you can redistribute it and/or modify it 14 * under the terms of the GNU General Public License as published by the 15 * Free Software Foundation; either version 2 of the License, or (at your 16 * option) any later version. 17 */ 18 19#include <linux/stddef.h> 20#include <linux/kernel.h> 21#include <linux/init.h> 22#include <linux/errno.h> 23#include <linux/reboot.h> 24#include <linux/pci.h> 25#include <linux/kdev_t.h> 26#include <linux/major.h> 27#include <linux/console.h> 28#include <linux/delay.h> 29#include <linux/seq_file.h> 30#include <linux/root_dev.h> 31#include <linux/initrd.h> 32 33#include <asm/of_device.h> 34#include <asm/of_platform.h> 35#include <asm/system.h> 36#include <asm/atomic.h> 37#include <asm/time.h> 38#include <asm/io.h> 39#include <asm/machdep.h> 40#include <asm/ipic.h> 41#include <asm/bootinfo.h> 42#include <asm/irq.h> 43#include <asm/prom.h> 44#include <asm/udbg.h> 45#include <sysdev/fsl_soc.h> 46#include <asm/qe.h> 47#include <asm/qe_ic.h> 48 49#include "mpc83xx.h" 50 51#undef DEBUG 52#ifdef DEBUG 53#define DBG(fmt...) udbg_printf(fmt) 54#else 55#define DBG(fmt...) 56#endif 57 58#ifndef CONFIG_PCI 59unsigned long isa_io_base = 0; 60unsigned long isa_mem_base = 0; 61#endif 62 63static u8 *bcsr_regs = NULL; 64 65/* ************************************************************************ 66 * 67 * Setup the architecture 68 * 69 */ 70static void __init mpc836x_mds_setup_arch(void) 71{ 72 struct device_node *np; 73 74 if (ppc_md.progress) 75 ppc_md.progress("mpc836x_mds_setup_arch()", 0); 76 77 /* Map BCSR area */ 78 np = of_find_node_by_name(NULL, "bcsr"); 79 if (np != 0) { 80 struct resource res; 81 82 of_address_to_resource(np, 0, &res); 83 bcsr_regs = ioremap(res.start, res.end - res.start +1); 84 of_node_put(np); 85 } 86 87#ifdef CONFIG_PCI 88 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) 89 add_bridge(np); 90 ppc_md.pci_exclude_device = mpc83xx_exclude_device; 91#endif 92 93#ifdef CONFIG_QUICC_ENGINE 94 qe_reset(); 95 96 if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) { 97 par_io_init(np); 98 of_node_put(np); 99 100 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) 101 par_io_of_config(np); 102 } 103 104 if ((np = of_find_compatible_node(NULL, "network", "ucc_geth")) 105 != NULL){ 106 /* Reset the Ethernet PHY */ 107 bcsr_regs[9] &= ~0x20; 108 udelay(1000); 109 bcsr_regs[9] |= 0x20; 110 iounmap(bcsr_regs); 111 of_node_put(np); 112 } 113 114#endif /* CONFIG_QUICC_ENGINE */ 115} 116 117static struct of_device_id mpc836x_ids[] = { 118 { .type = "soc", }, 119 { .compatible = "soc", }, 120 { .type = "qe", }, 121 { .type = "mdio", }, 122 {}, 123}; 124 125static int __init mpc836x_declare_of_platform_devices(void) 126{ 127 if (!machine_is(mpc836x_mds)) 128 return 0; 129 130 /* Publish the QE devices */ 131 of_platform_bus_probe(NULL, mpc836x_ids, NULL); 132 133 return 0; 134} 135device_initcall(mpc836x_declare_of_platform_devices); 136 137static void __init mpc836x_mds_init_IRQ(void) 138{ 139 struct device_node *np; 140 141 np = of_find_node_by_type(NULL, "ipic"); 142 if (!np) 143 return; 144 145 ipic_init(np, 0); 146 147 /* Initialize the default interrupt mapping priorities, 148 * in case the boot rom changed something on us. 149 */ 150 ipic_set_default_priority(); 151 of_node_put(np); 152 153#ifdef CONFIG_QUICC_ENGINE 154 np = of_find_node_by_type(NULL, "qeic"); 155 if (!np) 156 return; 157 158 qe_ic_init(np, 0); 159 of_node_put(np); 160#endif /* CONFIG_QUICC_ENGINE */ 161} 162 163#if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374) 164extern ulong ds1374_get_rtc_time(void); 165extern int ds1374_set_rtc_time(ulong); 166 167static int __init mpc8360_rtc_hookup(void) 168{ 169 struct timespec tv; 170 171 if (!machine_is(mpc836x_mds)) 172 return 0; 173 174 ppc_md.get_rtc_time = ds1374_get_rtc_time; 175 ppc_md.set_rtc_time = ds1374_set_rtc_time; 176 177 tv.tv_nsec = 0; 178 tv.tv_sec = (ppc_md.get_rtc_time) (); 179 do_settimeofday(&tv); 180 181 return 0; 182} 183 184late_initcall(mpc8360_rtc_hookup); 185#endif 186 187/* 188 * Called very early, MMU is off, device-tree isn't unflattened 189 */ 190static int __init mpc836x_mds_probe(void) 191{ 192 unsigned long root = of_get_flat_dt_root(); 193 194 return of_flat_dt_is_compatible(root, "MPC836xMDS"); 195} 196 197define_machine(mpc836x_mds) { 198 .name = "MPC836x MDS", 199 .probe = mpc836x_mds_probe, 200 .setup_arch = mpc836x_mds_setup_arch, 201 .init_IRQ = mpc836x_mds_init_IRQ, 202 .get_irq = ipic_get_irq, 203 .restart = mpc83xx_restart, 204 .time_init = mpc83xx_time_init, 205 .calibrate_decr = generic_calibrate_decr, 206 .progress = udbg_progress, 207}; 208