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/system.h>
  35 #include <asm/atomic.h>
  36 #include <asm/time.h>
  37 #include <asm/io.h>
  38 #include <asm/machdep.h>
  39 #include <asm/ipic.h>
  40 #include <asm/bootinfo.h>
  41 #include <asm/irq.h>
  42 #include <asm/prom.h>
  43 #include <asm/udbg.h>
  44 #include <sysdev/fsl_soc.h>
  45 #include <asm/qe.h>
  46 #include <asm/qe_ic.h>
  47
  48 #include "mpc83xx.h"
  49
  50 #undef DEBUG
  51 #ifdef DEBUG
  52 #define DBG(fmt...) udbg_printf(fmt)
  53 #else
  54 #define DBG(fmt...)
  55 #endif
  56
  57 #ifndef CONFIG_PCI
  58 unsigned long isa_io_base = 0;
  59 unsigned long isa_mem_base = 0;
  60 #endif
  61
  62 static u8 *bcsr_regs = NULL;
  63
  64 u8 *get_bcsr(void)
  65 {
  66         return bcsr_regs;
  67 }
  68
  69 /* ************************************************************************
  70  *
  71  * Setup the architecture
  72  *
  73  */
  74 static void __init mpc8360_sys_setup_arch(void)
  75 {
  76         struct device_node *np;
  77
  78         if (ppc_md.progress)
  79                 ppc_md.progress("mpc8360_sys_setup_arch()", 0);
  80
  81         np = of_find_node_by_type(NULL, "cpu");
  82         if (np != 0) {
  83                 const unsigned int *fp =
  84                     get_property(np, "clock-frequency", NULL);
  85                 if (fp != 0)
  86                         loops_per_jiffy = *fp / HZ;
  87                 else
  88                         loops_per_jiffy = 50000000 / HZ;
  89                 of_node_put(np);
  90         }
  91
  92         /* Map BCSR area */
  93         np = of_find_node_by_name(NULL, "bcsr");
  94         if (np != 0) {
  95                 struct resource res;
  96
  97                 of_address_to_resource(np, 0, &res);
  98                 bcsr_regs = ioremap(res.start, res.end - res.start +1);
  99                 of_node_put(np);
 100         }
 101
 102 #ifdef CONFIG_PCI
 103         for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
 104                 add_bridge(np);
 105         ppc_md.pci_exclude_device = mpc83xx_exclude_device;
 106 #endif
 107
 108 #ifdef CONFIG_QUICC_ENGINE
 109         qe_reset();
 110
 111         if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
 112                 par_io_init(np);
 113                 of_node_put(np);
 114
 115                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
 116                         par_io_of_config(np);
 117         }
 118
 119         if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
 120                         != NULL){
 121                 /* Reset the Ethernet PHY */
 122                 bcsr_regs[9] &= ~0x20;
 123                 udelay(1000);
 124                 bcsr_regs[9] |= 0x20;
 125                 iounmap(bcsr_regs);
 126                 of_node_put(np);
 127         }
 128
 129 #endif                          /* CONFIG_QUICC_ENGINE */
 130
 131 #ifdef CONFIG_BLK_DEV_INITRD
 132         if (initrd_start)
 133                 ROOT_DEV = Root_RAM0;
 134         else
 135 #endif
 136 #ifdef  CONFIG_ROOT_NFS
 137                 ROOT_DEV = Root_NFS;
 138 #else
 139                 ROOT_DEV = Root_HDA1;
 140 #endif
 141 }
 142
 143 static int __init mpc8360_declare_of_platform_devices(void)
 144 {
 145         struct device_node *np;
 146
 147         for (np = NULL; (np = of_find_compatible_node(np, "network",
 148                                         "ucc_geth")) != NULL;) {
 149                 int ucc_num;
 150                 char bus_id[BUS_ID_SIZE];
 151
 152                 ucc_num = *((uint *) get_property(np, "device-id", NULL)) - 1;
 153                 snprintf(bus_id, BUS_ID_SIZE, "ucc_geth.%u", ucc_num);
 154                 of_platform_device_create(np, bus_id, NULL);
 155         }
 156
 157         return 0;
 158 }
 159 device_initcall(mpc8360_declare_of_platform_devices);
 160
 161 void __init mpc8360_sys_init_IRQ(void)
 162 {
 163
 164         struct device_node *np;
 165
 166         np = of_find_node_by_type(NULL, "ipic");
 167         if (!np)
 168                 return;
 169
 170         ipic_init(np, 0);
 171
 172         /* Initialize the default interrupt mapping priorities,
 173          * in case the boot rom changed something on us.
 174          */
 175         ipic_set_default_priority();
 176         of_node_put(np);
 177
 178 #ifdef CONFIG_QUICC_ENGINE
 179         np = of_find_node_by_type(NULL, "qeic");
 180         if (!np)
 181                 return;
 182
 183         qe_ic_init(np, 0);
 184         of_node_put(np);
 185 #endif                          /* CONFIG_QUICC_ENGINE */
 186 }
 187
 188 #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
 189 extern ulong ds1374_get_rtc_time(void);
 190 extern int ds1374_set_rtc_time(ulong);
 191
 192 static int __init mpc8360_rtc_hookup(void)
 193 {
 194         struct timespec tv;
 195
 196         ppc_md.get_rtc_time = ds1374_get_rtc_time;
 197         ppc_md.set_rtc_time = ds1374_set_rtc_time;
 198
 199         tv.tv_nsec = 0;
 200         tv.tv_sec = (ppc_md.get_rtc_time) ();
 201         do_settimeofday(&tv);
 202
 203         return 0;
 204 }
 205
 206 late_initcall(mpc8360_rtc_hookup);
 207 #endif
 208
 209 /*
 210  * Called very early, MMU is off, device-tree isn't unflattened
 211  */
 212 static int __init mpc8360_sys_probe(void)
 213 {
 214         char *model = of_get_flat_dt_prop(of_get_flat_dt_root(),
 215                                           "model", NULL);
 216         if (model == NULL)
 217                 return 0;
 218         if (strcmp(model, "MPC8360EPB"))
 219                 return 0;
 220
 221         DBG("MPC8360EMDS-PB found\n");
 222
 223         return 1;
 224 }
 225
 226 define_machine(mpc8360_sys) {
 227         .name           = "MPC8360E PB",
 228         .probe          = mpc8360_sys_probe,
 229         .setup_arch     = mpc8360_sys_setup_arch,
 230         .init_IRQ       = mpc8360_sys_init_IRQ,
 231         .get_irq        = ipic_get_irq,
 232         .restart        = mpc83xx_restart,
 233         .time_init      = mpc83xx_time_init,
 234         .calibrate_decr = generic_calibrate_decr,
 235         .progress       = udbg_progress,
 236 };