text: /*
   * Common boot and setup code for both 32-bit and 64-bit.
   * Extracted from arch/powerpc/kernel/setup_64.c.
   *
   * Copyright (C) 2001 PPC64 Team, IBM Corp
   *
   *      This program is free software; you can redistribute it and/or
   *      modify it under the terms of the GNU General Public License
   *      as published by the Free Software Foundation; either version
   *      2 of the License, or (at your option) any later version.
   */
  
  #undef DEBUG
  
  #include <linux/export.h>
  #include <linux/string.h>
  #include <linux/sched.h>
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/reboot.h>
  #include <linux/delay.h>
  #include <linux/initrd.h>
  #include <linux/platform_device.h>
  #include <linux/seq_file.h>
  #include <linux/ioport.h>
  #include <linux/console.h>
  #include <linux/screen_info.h>
  #include <linux/root_dev.h>
  #include <linux/notifier.h>
  #include <linux/cpu.h>
  #include <linux/unistd.h>
  #include <linux/serial.h>
  #include <linux/serial_8250.h>
  #include <linux/debugfs.h>
  #include <linux/percpu.h>
  #include <linux/memblock.h>
  #include <linux/of_platform.h>
  #include <asm/io.h>
  #include <asm/paca.h>
  #include <asm/prom.h>
  #include <asm/processor.h>
  #include <asm/vdso_datapage.h>
  #include <asm/pgtable.h>
  #include <asm/smp.h>
  #include <asm/elf.h>
  #include <asm/machdep.h>
  #include <asm/time.h>
  #include <asm/cputable.h>
  #include <asm/sections.h>
  #include <asm/firmware.h>
  #include <asm/btext.h>
  #include <asm/nvram.h>
  #include <asm/setup.h>
  #include <asm/rtas.h>
  #include <asm/iommu.h>
  #include <asm/serial.h>
  #include <asm/cache.h>
  #include <asm/page.h>
  #include <asm/mmu.h>
  #include <asm/xmon.h>
  #include <asm/cputhreads.h>
  #include <mm/mmu_decl.h>
  #include <asm/fadump.h>
  
  #ifdef DEBUG
  #include <asm/udbg.h>
  #define DBG(fmt...) udbg_printf(fmt)
  #else
  #define DBG(fmt...)
  #endif
  
  /* The main machine-dep calls structure
   */
  struct machdep_calls ppc_md;
  EXPORT_SYMBOL(ppc_md);
  struct machdep_calls *machine_id;
  EXPORT_SYMBOL(machine_id);
  
  int boot_cpuid = -1;
  EXPORT_SYMBOL_GPL(boot_cpuid);
  
  unsigned long klimit = (unsigned long) _end;
  
  /*
   * This still seems to be needed... -- paulus
   */ 
  struct screen_info screen_info = {
  	.orig_x = 0,
  	.orig_y = 25,
  	.orig_video_cols = 80,
  	.orig_video_lines = 25,
  	.orig_video_isVGA = 1,
  	.orig_video_points = 16
  };
  #if defined(CONFIG_FB_VGA16_MODULE)
  EXPORT_SYMBOL(screen_info);
  #endif
  
  /* Variables required to store legacy IO irq routing */
  int of_i8042_kbd_irq;
  EXPORT_SYMBOL_GPL(of_i8042_kbd_irq);
  int of_i8042_aux_irq;
  EXPORT_SYMBOL_GPL(of_i8042_aux_irq);
  
  #ifdef __DO_IRQ_CANON
  /* XXX should go elsewhere eventually */
  int ppc_do_canonicalize_irqs;
  EXPORT_SYMBOL(ppc_do_canonicalize_irqs);
  #endif
  
  /* also used by kexec */
  void machine_shutdown(void)
  {
  #ifdef CONFIG_FA_DUMP
  	/*
  	 * if fadump is active, cleanup the fadump registration before we
  	 * shutdown.
  	 */
  	fadump_cleanup();
  #endif
  
  	if (ppc_md.machine_shutdown)
  		ppc_md.machine_shutdown();
  }
  
  void machine_restart(char *cmd)
  {
  	machine_shutdown();
  	if (ppc_md.restart)
  		ppc_md.restart(cmd);
  #ifdef CONFIG_SMP
  	smp_send_stop();
  #endif
  	printk(KERN_EMERG "System Halted, OK to turn off power\n");
  	local_irq_disable();
  	while (1) ;
  }
  
  void machine_power_off(void)
  {
  	machine_shutdown();
  	if (pm_power_off)
  		pm_power_off();
  #ifdef CONFIG_SMP
  	smp_send_stop();
  #endif
  	printk(KERN_EMERG "System Halted, OK to turn off power\n");
  	local_irq_disable();
  	while (1) ;
  }
  /* Used by the G5 thermal driver */
  EXPORT_SYMBOL_GPL(machine_power_off);
  
  void (*pm_power_off)(void);
  EXPORT_SYMBOL_GPL(pm_power_off);
  
  void machine_halt(void)
  {
  	machine_shutdown();
  	if (ppc_md.halt)
  		ppc_md.halt();
  #ifdef CONFIG_SMP
  	smp_send_stop();
  #endif
  	printk(KERN_EMERG "System Halted, OK to turn off power\n");
  	local_irq_disable();
  	while (1) ;
  }
  
  
  #ifdef CONFIG_TAU
  extern u32 cpu_temp(unsigned long cpu);
  extern u32 cpu_temp_both(unsigned long cpu);
  #endif /* CONFIG_TAU */
  
  #ifdef CONFIG_SMP
  DEFINE_PER_CPU(unsigned int, cpu_pvr);
  #endif
  
  static void show_cpuinfo_summary(struct seq_file *m)
  {
  	struct device_node *root;
  	const char *model = NULL;
  #if defined(CONFIG_SMP) && defined(CONFIG_PPC32)
  	unsigned long bogosum = 0;
  	int i;
  	for_each_online_cpu(i)
  		bogosum += loops_per_jiffy;
  	seq_printf(m, "total bogomips\t: %lu.%02lu\n",
  		   bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
  #endif /* CONFIG_SMP && CONFIG_PPC32 */
  	seq_printf(m, "timebase\t: %lu\n", ppc_tb_freq);
  	if (ppc_md.name)
  		seq_printf(m, "platform\t: %s\n", ppc_md.name);
  	root = of_find_node_by_path("/");
  	if (root)
  		model = of_get_property(root, "model", NULL);
  	if (model)
  		seq_printf(m, "model\t\t: %s\n", model);
  	of_node_put(root);
  
  	if (ppc_md.show_cpuinfo != NULL)
  		ppc_md.show_cpuinfo(m);
  
  #ifdef CONFIG_PPC32
  	/* Display the amount of memory */
  	seq_printf(m, "Memory\t\t: %d MB\n",
  		   (unsigned int)(total_memory / (1024 * 1024)));
  #endif
  }
  
  static int show_cpuinfo(struct seq_file *m, void *v)
  {
  	unsigned long cpu_id = (unsigned long)v - 1;
  	unsigned int pvr;
  	unsigned long proc_freq;
  	unsigned short maj;
  	unsigned short min;
  
  	/* We only show online cpus: disable preempt (overzealous, I
  	 * knew) to prevent cpu going down. */
  	preempt_disable();
  	if (!cpu_online(cpu_id)) {
  		preempt_enable();
  		return 0;
  	}
  
  #ifdef CONFIG_SMP
  	pvr = per_cpu(cpu_pvr, cpu_id);
  #else
  	pvr = mfspr(SPRN_PVR);
  #endif
  	maj = (pvr >> 8) & 0xFF;
  	min = pvr & 0xFF;
  
  	seq_printf(m, "processor\t: %lu\n", cpu_id);
  	seq_printf(m, "cpu\t\t: ");
  
  	if (cur_cpu_spec->pvr_mask)
  		seq_printf(m, "%s", cur_cpu_spec->cpu_name);
  	else
  		seq_printf(m, "unknown (%08x)", pvr);
  
  #ifdef CONFIG_ALTIVEC
  	if (cpu_has_feature(CPU_FTR_ALTIVEC))
  		seq_printf(m, ", altivec supported");
  #endif /* CONFIG_ALTIVEC */
  
  	seq_printf(m, "\n");
  
  #ifdef CONFIG_TAU
  	if (cur_cpu_spec->cpu_features & CPU_FTR_TAU) {
  #ifdef CONFIG_TAU_AVERAGE
  		/* more straightforward, but potentially misleading */
  		seq_printf(m,  "temperature \t: %u C (uncalibrated)\n",
  			   cpu_temp(cpu_id));
  #else
  		/* show the actual temp sensor range */
  		u32 temp;
  		temp = cpu_temp_both(cpu_id);
  		seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
  			   temp & 0xff, temp >> 16);
  #endif
  	}
  #endif /* CONFIG_TAU */
  
  	/*
  	 * Platforms that have variable clock rates, should implement
  	 * the method ppc_md.get_proc_freq() that reports the clock
  	 * rate of a given cpu. The rest can use ppc_proc_freq to
  	 * report the clock rate that is same across all cpus.
  	 */
  	if (ppc_md.get_proc_freq)
  		proc_freq = ppc_md.get_proc_freq(cpu_id);
  	else
  		proc_freq = ppc_proc_freq;
  
  	if (proc_freq)
  		seq_printf(m, "clock\t\t: %lu.%06luMHz\n",
  			   proc_freq / 1000000, proc_freq % 1000000);
  
  	if (ppc_md.show_percpuinfo != NULL)
  		ppc_md.show_percpuinfo(m, cpu_id);
  
  	/* If we are a Freescale core do a simple check so
  	 * we dont have to keep adding cases in the future */
  	if (PVR_VER(pvr) & 0x8000) {
  		switch (PVR_VER(pvr)) {
  		case 0x8000:	/* 7441/7450/7451, Voyager */
  		case 0x8001:	/* 7445/7455, Apollo 6 */
  		case 0x8002:	/* 7447/7457, Apollo 7 */
  		case 0x8003:	/* 7447A, Apollo 7 PM */
  		case 0x8004:	/* 7448, Apollo 8 */
  		case 0x800c:	/* 7410, Nitro */
  			maj = ((pvr >> 8) & 0xF);
  			min = PVR_MIN(pvr);
  			break;
  		default:	/* e500/book-e */
  			maj = PVR_MAJ(pvr);
  			min = PVR_MIN(pvr);
  			break;
  		}
  	} else {
  		switch (PVR_VER(pvr)) {
  			case 0x0020:	/* 403 family */
  				maj = PVR_MAJ(pvr) + 1;
  				min = PVR_MIN(pvr);
  				break;
  			case 0x1008:	/* 740P/750P ?? */
  				maj = ((pvr >> 8) & 0xFF) - 1;
  				min = pvr & 0xFF;
  				break;
  			default:
  				maj = (pvr >> 8) & 0xFF;
  				min = pvr & 0xFF;
  				break;
  		}
  	}
  
  	seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
  		   maj, min, PVR_VER(pvr), PVR_REV(pvr));
  
  #ifdef CONFIG_PPC32
  	seq_printf(m, "bogomips\t: %lu.%02lu\n",
  		   loops_per_jiffy / (500000/HZ),
  		   (loops_per_jiffy / (5000/HZ)) % 100);
  #endif
  
  #ifdef CONFIG_SMP
  	seq_printf(m, "\n");
  #endif
  
  	preempt_enable();
  
  	/* If this is the last cpu, print the summary */
  	if (cpumask_next(cpu_id, cpu_online_mask) >= nr_cpu_ids)
  		show_cpuinfo_summary(m);
  
  	return 0;
  }
  
  static void *c_start(struct seq_file *m, loff_t *pos)
  {
  	if (*pos == 0)	/* just in case, cpu 0 is not the first */
  		*pos = cpumask_first(cpu_online_mask);
  	else
  		*pos = cpumask_next(*pos - 1, cpu_online_mask);
  	if ((*pos) < nr_cpu_ids)
  		return (void *)(unsigned long)(*pos + 1);
  	return NULL;
  }
  
  static void *c_next(struct seq_file *m, void *v, loff_t *pos)
  {
  	(*pos)++;
  	return c_start(m, pos);
  }
  
  static void c_stop(struct seq_file *m, void *v)
  {
  }
  
  const struct seq_operations cpuinfo_op = {
  	.start =c_start,
  	.next =	c_next,
  	.stop =	c_stop,
  	.show =	show_cpuinfo,
  };
  
  void __init check_for_initrd(void)
  {
  #ifdef CONFIG_BLK_DEV_INITRD
  	DBG(" -> check_for_initrd()  initrd_start=0x%lx  initrd_end=0x%lx\n",
  	    initrd_start, initrd_end);
  
  	/* If we were passed an initrd, set the ROOT_DEV properly if the values
  	 * look sensible. If not, clear initrd reference.
  	 */
  	if (is_kernel_addr(initrd_start) && is_kernel_addr(initrd_end) &&
  	    initrd_end > initrd_start)
  		ROOT_DEV = Root_RAM0;
  	else
  		initrd_start = initrd_end = 0;
  
  	if (initrd_start)
  		pr_info("Found initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end);
  
  	DBG(" <- check_for_initrd()\n");
  #endif /* CONFIG_BLK_DEV_INITRD */
  }
  
  #ifdef CONFIG_SMP
  
  int threads_per_core, threads_per_subcore, threads_shift;
  cpumask_t threads_core_mask;
  EXPORT_SYMBOL_GPL(threads_per_core);
  EXPORT_SYMBOL_GPL(threads_per_subcore);
  EXPORT_SYMBOL_GPL(threads_shift);
  EXPORT_SYMBOL_GPL(threads_core_mask);
  
  static void __init cpu_init_thread_core_maps(int tpc)
  {
  	int i;
  
  	threads_per_core = tpc;
  	threads_per_subcore = tpc;
  	cpumask_clear(&threads_core_mask);
  
  	/* This implementation only supports power of 2 number of threads
  	 * for simplicity and performance
  	 */
  	threads_shift = ilog2(tpc);
  	BUG_ON(tpc != (1 << threads_shift));
  
  	for (i = 0; i < tpc; i++)
  		cpumask_set_cpu(i, &threads_core_mask);
  
  	printk(KERN_INFO "CPU maps initialized for %d thread%s per core\n",
  	       tpc, tpc > 1 ? "s" : "");
  	printk(KERN_DEBUG " (thread shift is %d)\n", threads_shift);
  }
  
  
  /**
   * setup_cpu_maps - initialize the following cpu maps:
   *                  cpu_possible_mask
   *                  cpu_present_mask
   *
   * Having the possible map set up early allows us to restrict allocations
   * of things like irqstacks to nr_cpu_ids rather than NR_CPUS.
   *
   * We do not initialize the online map here; cpus set their own bits in
   * cpu_online_mask as they come up.
   *
   * This function is valid only for Open Firmware systems.  finish_device_tree
   * must be called before using this.
   *
   * While we're here, we may as well set the "physical" cpu ids in the paca.
   *
   * NOTE: This must match the parsing done in early_init_dt_scan_cpus.
   */
  void __init smp_setup_cpu_maps(void)
  {
  	struct device_node *dn = NULL;
  	int cpu = 0;
  	int nthreads = 1;
  
  	DBG("smp_setup_cpu_maps()\n");
  
  	while ((dn = of_find_node_by_type(dn, "cpu")) && cpu < nr_cpu_ids) {
  		const __be32 *intserv;
  		__be32 cpu_be;
  		int j, len;
  
  		DBG("  * %s...\n", dn->full_name);
  
  		intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s",
  				&len);
  		if (intserv) {
  			DBG("    ibm,ppc-interrupt-server#s -> %d threads\n",
  			    nthreads);
  		} else {
  			DBG("    no ibm,ppc-interrupt-server#s -> 1 thread\n");
  			intserv = of_get_property(dn, "reg", &len);
  			if (!intserv) {
  				cpu_be = cpu_to_be32(cpu);
  				intserv = &cpu_be;	/* assume logical == phys */
  				len = 4;
  			}
  		}
  
  		nthreads = len / sizeof(int);
  
  		for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) {
  			bool avail;
  
  			DBG("    thread %d -> cpu %d (hard id %d)\n",
  			    j, cpu, be32_to_cpu(intserv[j]));
  
  			avail = of_device_is_available(dn);
  			if (!avail)
  				avail = !of_property_match_string(dn,
  						"enable-method", "spin-table");
  
  			set_cpu_present(cpu, avail);
  			set_hard_smp_processor_id(cpu, be32_to_cpu(intserv[j]));
  			set_cpu_possible(cpu, true);
  			cpu++;
  		}
  	}
  
  	/* If no SMT supported, nthreads is forced to 1 */
  	if (!cpu_has_feature(CPU_FTR_SMT)) {
  		DBG("  SMT disabled ! nthreads forced to 1\n");
  		nthreads = 1;
  	}
  
  #ifdef CONFIG_PPC64
  	/*
  	 * On pSeries LPAR, we need to know how many cpus
  	 * could possibly be added to this partition.
  	 */
  	if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR) &&
  	    (dn = of_find_node_by_path("/rtas"))) {
  		int num_addr_cell, num_size_cell, maxcpus;
  		const __be32 *ireg;
  
  		num_addr_cell = of_n_addr_cells(dn);
  		num_size_cell = of_n_size_cells(dn);
  
  		ireg = of_get_property(dn, "ibm,lrdr-capacity", NULL);
  
  		if (!ireg)
  			goto out;
  
  		maxcpus = be32_to_cpup(ireg + num_addr_cell + num_size_cell);
  
  		/* Double maxcpus for processors which have SMT capability */
  		if (cpu_has_feature(CPU_FTR_SMT))
  			maxcpus *= nthreads;
  
  		if (maxcpus > nr_cpu_ids) {
  			printk(KERN_WARNING
  			       "Partition configured for %d cpus, "
  			       "operating system maximum is %d.\n",
  			       maxcpus, nr_cpu_ids);
  			maxcpus = nr_cpu_ids;
  		} else
  			printk(KERN_INFO "Partition configured for %d cpus.\n",
  			       maxcpus);
  
  		for (cpu = 0; cpu < maxcpus; cpu++)
  			set_cpu_possible(cpu, true);
  	out:
  		of_node_put(dn);
  	}
  	vdso_data->processorCount = num_present_cpus();
  #endif /* CONFIG_PPC64 */
  
          /* Initialize CPU <=> thread mapping/
  	 *
  	 * WARNING: We assume that the number of threads is the same for
  	 * every CPU in the system. If that is not the case, then some code
  	 * here will have to be reworked
  	 */
  	cpu_init_thread_core_maps(nthreads);
  
  	/* Now that possible cpus are set, set nr_cpu_ids for later use */
  	setup_nr_cpu_ids();
  
  	free_unused_pacas();
  }
  #endif /* CONFIG_SMP */
  
  #ifdef CONFIG_PCSPKR_PLATFORM
  static __init int add_pcspkr(void)
  {
  	struct device_node *np;
  	struct platform_device *pd;
  	int ret;
  
  	np = of_find_compatible_node(NULL, NULL, "pnpPNP,100");
  	of_node_put(np);
  	if (!np)
  		return -ENODEV;
  
  	pd = platform_device_alloc("pcspkr", -1);
  	if (!pd)
  		return -ENOMEM;
  
  	ret = platform_device_add(pd);
  	if (ret)
  		platform_device_put(pd);
  
  	return ret;
  }
  device_initcall(add_pcspkr);
  #endif	/* CONFIG_PCSPKR_PLATFORM */
  
  void probe_machine(void)
  {
  	extern struct machdep_calls __machine_desc_start;
  	extern struct machdep_calls __machine_desc_end;
  
  	/*
  	 * Iterate all ppc_md structures until we find the proper
  	 * one for the current machine type
  	 */
  	DBG("Probing machine type ...\n");
  
  	for (machine_id = &__machine_desc_start;
  	     machine_id < &__machine_desc_end;
  	     machine_id++) {
  		DBG("  %s ...", machine_id->name);
  		memcpy(&ppc_md, machine_id, sizeof(struct machdep_calls));
  		if (ppc_md.probe()) {
  			DBG(" match !\n");
  			break;
  		}
  		DBG("\n");
  	}
  	/* What can we do if we didn't find ? */
  	if (machine_id >= &__machine_desc_end) {
  		DBG("No suitable machine found !\n");
  		for (;;);
  	}
  
  	printk(KERN_INFO "Using %s machine description\n", ppc_md.name);
  }
  
  /* Match a class of boards, not a specific device configuration. */
  int check_legacy_ioport(unsigned long base_port)
  {
  	struct device_node *parent, *np = NULL;
  	int ret = -ENODEV;
  
  	switch(base_port) {
  	case I8042_DATA_REG:
  		if (!(np = of_find_compatible_node(NULL, NULL, "pnpPNP,303")))
  			np = of_find_compatible_node(NULL, NULL, "pnpPNP,f03");
  		if (np) {
  			parent = of_get_parent(np);
  
  			of_i8042_kbd_irq = irq_of_parse_and_map(parent, 0);
  			if (!of_i8042_kbd_irq)
  				of_i8042_kbd_irq = 1;
  
  			of_i8042_aux_irq = irq_of_parse_and_map(parent, 1);
  			if (!of_i8042_aux_irq)
  				of_i8042_aux_irq = 12;
  
  			of_node_put(np);
  			np = parent;
  			break;
  		}
  		np = of_find_node_by_type(NULL, "8042");
  		/* Pegasos has no device_type on its 8042 node, look for the
  		 * name instead */
  		if (!np)
  			np = of_find_node_by_name(NULL, "8042");
  		if (np) {
  			of_i8042_kbd_irq = 1;
  			of_i8042_aux_irq = 12;
  		}
  		break;
  	case FDC_BASE: /* FDC1 */
  		np = of_find_node_by_type(NULL, "fdc");
  		break;
  	default:
  		/* ipmi is supposed to fail here */
  		break;
  	}
  	if (!np)
  		return ret;
  	parent = of_get_parent(np);
  	if (parent) {
  		if (strcmp(parent->type, "isa") == 0)
  			ret = 0;
  		of_node_put(parent);
  	}
  	of_node_put(np);
  	return ret;
  }
  EXPORT_SYMBOL(check_legacy_ioport);
  
  static int ppc_panic_event(struct notifier_block *this,
                               unsigned long event, void *ptr)
  {
  	/*
  	 * If firmware-assisted dump has been registered then trigger
  	 * firmware-assisted dump and let firmware handle everything else.
  	 */
  	crash_fadump(NULL, ptr);
  	ppc_md.panic(ptr);  /* May not return */
  	return NOTIFY_DONE;
  }
  
  static struct notifier_block ppc_panic_block = {
  	.notifier_call = ppc_panic_event,
  	.priority = INT_MIN /* may not return; must be done last */
  };
  
  void __init setup_panic(void)
  {
  	atomic_notifier_chain_register(&panic_notifier_list, &ppc_panic_block);
  }
  
  #ifdef CONFIG_CHECK_CACHE_COHERENCY
  /*
   * For platforms that have configurable cache-coherency.  This function
   * checks that the cache coherency setting of the kernel matches the setting
   * left by the firmware, as indicated in the device tree.  Since a mismatch
   * will eventually result in DMA failures, we print * and error and call
   * BUG() in that case.
   */
  
  #ifdef CONFIG_NOT_COHERENT_CACHE
  #define KERNEL_COHERENCY	0
  #else
  #define KERNEL_COHERENCY	1
  #endif
  
  static int __init check_cache_coherency(void)
  {
  	struct device_node *np;
  	const void *prop;
  	int devtree_coherency;
  
  	np = of_find_node_by_path("/");
  	prop = of_get_property(np, "coherency-off", NULL);
  	of_node_put(np);
  
  	devtree_coherency = prop ? 0 : 1;
  
  	if (devtree_coherency != KERNEL_COHERENCY) {
  		printk(KERN_ERR
  			"kernel coherency:%s != device tree_coherency:%s\n",
  			KERNEL_COHERENCY ? "on" : "off",
  			devtree_coherency ? "on" : "off");
  		BUG();
  	}
  
  	return 0;
  }
  
  late_initcall(check_cache_coherency);
  #endif /* CONFIG_CHECK_CACHE_COHERENCY */
  
  #ifdef CONFIG_DEBUG_FS
  struct dentry *powerpc_debugfs_root;
  EXPORT_SYMBOL(powerpc_debugfs_root);
  
  static int powerpc_debugfs_init(void)
  {
  	powerpc_debugfs_root = debugfs_create_dir("powerpc", NULL);
  
  	return powerpc_debugfs_root == NULL;
  }
  arch_initcall(powerpc_debugfs_init);
  #endif
  
  void ppc_printk_progress(char *s, unsigned short hex)
  {
  	pr_info("%s\n", s);
  }
  
  void arch_setup_pdev_archdata(struct platform_device *pdev)
  {
  	pdev->archdata.dma_mask = DMA_BIT_MASK(32);
  	pdev->dev.dma_mask = &pdev->archdata.dma_mask;
   	set_dma_ops(&pdev->dev, &dma_direct_ops);
  }
  