arch/powerpc/platforms/83xx/mpc832x_mds.c

   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 #include <linux/of_platform.h>
  27 #include <linux/of_device.h>
  28
  29 #include <asm/system.h>
  30 #include <linux/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/irq.h>
  36 #include <asm/prom.h>
  37 #include <asm/udbg.h>
  38 #include <sysdev/fsl_soc.h>
  39 #include <sysdev/fsl_pci.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 /* ************************************************************************
  53  *
  54  * Setup the architecture
  55  *
  56  */
  57 static void __init mpc832x_sys_setup_arch(void)
  58 {
  59         struct device_node *np;
  60         u8 __iomem *bcsr_regs = NULL;
  61
  62         if (ppc_md.progress)
  63                 ppc_md.progress("mpc832x_sys_setup_arch()", 0);
  64
  65         /* Map BCSR area */
  66         np = of_find_node_by_name(NULL, "bcsr");
  67         if (np) {
  68                 struct resource res;
  69
  70                 of_address_to_resource(np, 0, &res);
  71                 bcsr_regs = ioremap(res.start, resource_size(&res));
  72                 of_node_put(np);
  73         }
  74
  75         mpc83xx_setup_pci();
  76
  77 #ifdef CONFIG_QUICC_ENGINE
  78         qe_reset();
  79
  80         if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
  81                 par_io_init(np);
  82                 of_node_put(np);
  83
  84                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
  85                         par_io_of_config(np);
  86         }
  87
  88         if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
  89                         != NULL){
  90                 /* Reset the Ethernet PHYs */
  91 #define BCSR8_FETH_RST 0x50
  92                 clrbits8(&bcsr_regs[8], BCSR8_FETH_RST);
  93                 udelay(1000);
  94                 setbits8(&bcsr_regs[8], BCSR8_FETH_RST);
  95                 iounmap(bcsr_regs);
  96                 of_node_put(np);
  97         }
  98 #endif                          /* CONFIG_QUICC_ENGINE */
  99 }
 100
 101 machine_device_initcall(mpc832x_mds, mpc83xx_declare_of_platform_devices);
 102
 103 /*
 104  * Called very early, MMU is off, device-tree isn't unflattened
 105  */
 106 static int __init mpc832x_sys_probe(void)
 107 {
 108         unsigned long root = of_get_flat_dt_root();
 109
 110         return of_flat_dt_is_compatible(root, "MPC832xMDS");
 111 }
 112
 113 define_machine(mpc832x_mds) {
 114         .name           = "MPC832x MDS",
 115         .probe          = mpc832x_sys_probe,
 116         .setup_arch     = mpc832x_sys_setup_arch,
 117         .init_IRQ       = mpc83xx_ipic_and_qe_init_IRQ,
 118         .get_irq        = ipic_get_irq,
 119         .restart        = mpc83xx_restart,
 120         .time_init      = mpc83xx_time_init,
 121         .calibrate_decr = generic_calibrate_decr,
 122         .progress       = udbg_progress,
 123 };