arch/powerpc/platforms/83xx/mpc8360e_pb.c

   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 PB 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
  59 unsigned long isa_io_base = 0;
  60 unsigned long isa_mem_base = 0;
  61 #endif
  62
  63 static u8 *bcsr_regs = NULL;
  64
  65 u8 *get_bcsr(void)
  66 {
  67         return bcsr_regs;
  68 }
  69
  70 /* ************************************************************************
  71  *
  72  * Setup the architecture
  73  *
  74  */
  75 static void __init mpc8360_sys_setup_arch(void)
  76 {
  77         struct device_node *np;
  78
  79         if (ppc_md.progress)
  80                 ppc_md.progress("mpc8360_sys_setup_arch()", 0);
  81
  82         np = of_find_node_by_type(NULL, "cpu");
  83         if (np != 0) {
  84                 const unsigned int *fp =
  85                     get_property(np, "clock-frequency", NULL);
  86                 if (fp != 0)
  87                         loops_per_jiffy = *fp / HZ;
  88                 else
  89                         loops_per_jiffy = 50000000 / HZ;
  90                 of_node_put(np);
  91         }
  92
  93         /* Map BCSR area */
  94         np = of_find_node_by_name(NULL, "bcsr");
  95         if (np != 0) {
  96                 struct resource res;
  97
  98                 of_address_to_resource(np, 0, &res);
  99                 bcsr_regs = ioremap(res.start, res.end - res.start +1);
 100                 of_node_put(np);
 101         }
 102
 103 #ifdef CONFIG_PCI
 104         for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
 105                 add_bridge(np);
 106         ppc_md.pci_exclude_device = mpc83xx_exclude_device;
 107 #endif
 108
 109 #ifdef CONFIG_QUICC_ENGINE
 110         qe_reset();
 111
 112         if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
 113                 par_io_init(np);
 114                 of_node_put(np);
 115
 116                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
 117                         par_io_of_config(np);
 118         }
 119
 120         if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
 121                         != NULL){
 122                 /* Reset the Ethernet PHY */
 123                 bcsr_regs[9] &= ~0x20;
 124                 udelay(1000);
 125                 bcsr_regs[9] |= 0x20;
 126                 iounmap(bcsr_regs);
 127                 of_node_put(np);
 128         }
 129
 130 #endif                          /* CONFIG_QUICC_ENGINE */
 131
 132 #ifdef CONFIG_BLK_DEV_INITRD
 133         if (initrd_start)
 134                 ROOT_DEV = Root_RAM0;
 135         else
 136 #endif
 137 #ifdef  CONFIG_ROOT_NFS
 138                 ROOT_DEV = Root_NFS;
 139 #else
 140                 ROOT_DEV = Root_HDA1;
 141 #endif
 142 }
 143
 144 static int __init mpc8360_declare_of_platform_devices(void)
 145 {
 146         struct device_node *np;
 147
 148         for (np = NULL; (np = of_find_compatible_node(np, "network",
 149                                         "ucc_geth")) != NULL;) {
 150                 int ucc_num;
 151                 char bus_id[BUS_ID_SIZE];
 152
 153                 ucc_num = *((uint *) get_property(np, "device-id", NULL)) - 1;
 154                 snprintf(bus_id, BUS_ID_SIZE, "ucc_geth.%u", ucc_num);
 155                 of_platform_device_create(np, bus_id, NULL);
 156         }
 157
 158         return 0;
 159 }
 160 device_initcall(mpc8360_declare_of_platform_devices);
 161
 162 static void __init mpc8360_sys_init_IRQ(void)
 163 {
 164
 165         struct device_node *np;
 166
 167         np = of_find_node_by_type(NULL, "ipic");
 168         if (!np)
 169                 return;
 170
 171         ipic_init(np, 0);
 172
 173         /* Initialize the default interrupt mapping priorities,
 174          * in case the boot rom changed something on us.
 175          */
 176         ipic_set_default_priority();
 177         of_node_put(np);
 178
 179 #ifdef CONFIG_QUICC_ENGINE
 180         np = of_find_node_by_type(NULL, "qeic");
 181         if (!np)
 182                 return;
 183
 184         qe_ic_init(np, 0);
 185         of_node_put(np);
 186 #endif                          /* CONFIG_QUICC_ENGINE */
 187 }
 188
 189 #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
 190 extern ulong ds1374_get_rtc_time(void);
 191 extern int ds1374_set_rtc_time(ulong);
 192
 193 static int __init mpc8360_rtc_hookup(void)
 194 {
 195         struct timespec tv;
 196
 197         ppc_md.get_rtc_time = ds1374_get_rtc_time;
 198         ppc_md.set_rtc_time = ds1374_set_rtc_time;
 199
 200         tv.tv_nsec = 0;
 201         tv.tv_sec = (ppc_md.get_rtc_time) ();
 202         do_settimeofday(&tv);
 203
 204         return 0;
 205 }
 206
 207 late_initcall(mpc8360_rtc_hookup);
 208 #endif
 209
 210 /*
 211  * Called very early, MMU is off, device-tree isn't unflattened
 212  */
 213 static int __init mpc8360_sys_probe(void)
 214 {
 215         char *model = of_get_flat_dt_prop(of_get_flat_dt_root(),
 216                                           "model", NULL);
 217         if (model == NULL)
 218                 return 0;
 219         if (strcmp(model, "MPC8360EPB"))
 220                 return 0;
 221
 222         DBG("MPC8360EMDS-PB found\n");
 223
 224         return 1;
 225 }
 226
 227 define_machine(mpc8360_sys) {
 228         .name           = "MPC8360E PB",
 229         .probe          = mpc8360_sys_probe,
 230         .setup_arch     = mpc8360_sys_setup_arch,
 231         .init_IRQ       = mpc8360_sys_init_IRQ,
 232         .get_irq        = ipic_get_irq,
 233         .restart        = mpc83xx_restart,
 234         .time_init      = mpc83xx_time_init,
 235         .calibrate_decr = generic_calibrate_decr,
 236         .progress       = udbg_progress,
 237 };