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 <linux/atomic.h>
  30 #include <asm/time.h>
  31 #include <asm/io.h>
  32 #include <asm/machdep.h>
  33 #include <asm/ipic.h>
  34 #include <asm/irq.h>
  35 #include <asm/prom.h>
  36 #include <asm/udbg.h>
  37 #include <sysdev/fsl_soc.h>
  38 #include <sysdev/fsl_pci.h>
  39 #include <asm/qe.h>
  40 #include <asm/qe_ic.h>
  41
  42 #include "mpc83xx.h"
  43
  44 #undef DEBUG
  45 #ifdef DEBUG
  46 #define DBG(fmt...) udbg_printf(fmt)
  47 #else
  48 #define DBG(fmt...)
  49 #endif
  50
  51 /* ************************************************************************
  52  *
  53  * Setup the architecture
  54  *
  55  */
  56 static void __init mpc832x_sys_setup_arch(void)
  57 {
  58         struct device_node *np;
  59         u8 __iomem *bcsr_regs = NULL;
  60
  61         if (ppc_md.progress)
  62                 ppc_md.progress("mpc832x_sys_setup_arch()", 0);
  63
  64         /* Map BCSR area */
  65         np = of_find_node_by_name(NULL, "bcsr");
  66         if (np) {
  67                 struct resource res;
  68
  69                 of_address_to_resource(np, 0, &res);
  70                 bcsr_regs = ioremap(res.start, resource_size(&res));
  71                 of_node_put(np);
  72         }
  73
  74         mpc83xx_setup_pci();
  75
  76 #ifdef CONFIG_QUICC_ENGINE
  77         qe_reset();
  78
  79         if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
  80                 par_io_init(np);
  81                 of_node_put(np);
  82
  83                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
  84                         par_io_of_config(np);
  85         }
  86
  87         if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
  88                         != NULL){
  89                 /* Reset the Ethernet PHYs */
  90 #define BCSR8_FETH_RST 0x50
  91                 clrbits8(&bcsr_regs[8], BCSR8_FETH_RST);
  92                 udelay(1000);
  93                 setbits8(&bcsr_regs[8], BCSR8_FETH_RST);
  94                 iounmap(bcsr_regs);
  95                 of_node_put(np);
  96         }
  97 #endif                          /* CONFIG_QUICC_ENGINE */
  98 }
  99
 100 machine_device_initcall(mpc832x_mds, mpc83xx_declare_of_platform_devices);
 101
 102 /*
 103  * Called very early, MMU is off, device-tree isn't unflattened
 104  */
 105 static int __init mpc832x_sys_probe(void)
 106 {
 107         unsigned long root = of_get_flat_dt_root();
 108
 109         return of_flat_dt_is_compatible(root, "MPC832xMDS");
 110 }
 111
 112 define_machine(mpc832x_mds) {
 113         .name           = "MPC832x MDS",
 114         .probe          = mpc832x_sys_probe,
 115         .setup_arch     = mpc832x_sys_setup_arch,
 116         .init_IRQ       = mpc83xx_ipic_and_qe_init_IRQ,
 117         .get_irq        = ipic_get_irq,
 118         .restart        = mpc83xx_restart,
 119         .time_init      = mpc83xx_time_init,
 120         .calibrate_decr = generic_calibrate_decr,
 121         .progress       = udbg_progress,
 122 };