[SPARC]: Port sparc64 in-kernel device tree code to sparc32. (942a6bdd) · Commits · e / devices / android_kernel_sony_msm8998

arch/sparc/kernel/Makefile

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -12,7 +12,7 @@ obj-y := entry.o wof.o wuf.o etrap.o rtrap.o traps.o $(IRQ_OBJS) \
	sys_sparc.o sunos_asm.o systbls.o \		sys_sparc.o sunos_asm.o systbls.o \
	time.o windows.o cpu.o devices.o sclow.o \		time.o windows.o cpu.o devices.o sclow.o \
	tadpole.o tick14.o ptrace.o sys_solaris.o \		tadpole.o tick14.o ptrace.o sys_solaris.o \
	unaligned.o muldiv.o semaphore.o		unaligned.o muldiv.o semaphore.o prom.o

	obj-$(CONFIG_PCI) += pcic.o		obj-$(CONFIG_PCI) += pcic.o
	obj-$(CONFIG_SUN4) += sun4setup.o		obj-$(CONFIG_SUN4) += sun4setup.o

arch/sparc/kernel/ebus.c

+84 −80

Original line number	Original line	Diff line number	Diff line
	@@ -20,6 +20,7 @@
	#include <asm/ebus.h>		#include <asm/ebus.h>
	#include <asm/io.h>		#include <asm/io.h>
	#include <asm/oplib.h>		#include <asm/oplib.h>
			#include <asm/prom.h>
	#include <asm/bpp.h>		#include <asm/bpp.h>

	struct linux_ebus *ebus_chain = NULL;		struct linux_ebus *ebus_chain = NULL;
	@@ -83,79 +84,81 @@ int __init ebus_blacklist_irq(char *name)
	return 0;		return 0;
	}		}

	void __init fill_ebus_child(int node, struct linux_prom_registers *preg,		void __init fill_ebus_child(struct device_node *dp,
	struct linux_ebus_child *dev)		struct linux_ebus_child *dev)
	{		{
	int regs[PROMREG_MAX];		int *regs;
	int irqs[PROMREG_MAX];		int *irqs;
	char lbuf[128];
	int i, len;		int i, len;

	dev->prom_node = node;		dev->prom_node = dp;
	prom_getstring(node, "name", lbuf, sizeof(lbuf));		regs = of_get_property(dp, "reg", &len);
	strcpy(dev->prom_name, lbuf);		if (!regs)
			len = 0;
	len = prom_getproperty(node, "reg", (void *)regs, sizeof(regs));
	if (len == -1) len = 0;
	dev->num_addrs = len / sizeof(regs[0]);		dev->num_addrs = len / sizeof(regs[0]);

	for (i = 0; i < dev->num_addrs; i++) {		for (i = 0; i < dev->num_addrs; i++) {
	if (regs[i] >= dev->parent->num_addrs) {		if (regs[i] >= dev->parent->num_addrs) {
	prom_printf("UGH: property for %s was %d, need < %d\n",		prom_printf("UGH: property for %s was %d, need < %d\n",
	dev->prom_name, len, dev->parent->num_addrs);		dev->prom_node->name, len,
			dev->parent->num_addrs);
	panic(__FUNCTION__);		panic(__FUNCTION__);
	}		}
	dev->resource[i].start = dev->parent->resource[regs[i]].start; /* XXX resource */
			/* XXX resource */
			dev->resource[i].start =
			dev->parent->resource[regs[i]].start;
	}		}

	for (i = 0; i < PROMINTR_MAX; i++)		for (i = 0; i < PROMINTR_MAX; i++)
	dev->irqs[i] = PCI_IRQ_NONE;		dev->irqs[i] = PCI_IRQ_NONE;

	if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_name)) != 0) {		if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
	dev->num_irqs = 1;		dev->num_irqs = 1;
	} else if ((len = prom_getproperty(node, "interrupts",		} else {
	(char *)&irqs, sizeof(irqs))) == -1 \|\| len == 0) {		irqs = of_get_property(dp, "interrupts", &len);
			if (!irqs) {
	dev->num_irqs = 0;		dev->num_irqs = 0;
	dev->irqs[0] = 0;		dev->irqs[0] = 0;
	if (dev->parent->num_irqs != 0) {		if (dev->parent->num_irqs != 0) {
	dev->num_irqs = 1;		dev->num_irqs = 1;
	dev->irqs[0] = dev->parent->irqs[0];		dev->irqs[0] = dev->parent->irqs[0];
	/* P3 / / printk("EBUS: dev %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */
	}		}
	} else {		} else {
	dev->num_irqs = len / sizeof(irqs[0]);		dev->num_irqs = len / sizeof(irqs[0]);
	if (irqs[0] == 0 \|\| irqs[0] >= 8) {		if (irqs[0] == 0 \|\| irqs[0] >= 8) {
	/*		/*
	* XXX Zero is a valid pin number...		* XXX Zero is a valid pin number...
	* This works as long as Ebus is not wired to INTA#.		* This works as long as Ebus is not wired
			* to INTA#.
	*/		*/
	printk("EBUS: %s got bad irq %d from PROM\n",		printk("EBUS: %s got bad irq %d from PROM\n",
	dev->prom_name, irqs[0]);		dev->prom_node->name, irqs[0]);
	dev->num_irqs = 0;		dev->num_irqs = 0;
	dev->irqs[0] = 0;		dev->irqs[0] = 0;
	} else {		} else {
	dev->irqs[0] = pcic_pin_to_irq(irqs[0], dev->prom_name);		dev->irqs[0] =
			pcic_pin_to_irq(irqs[0],
			dev->prom_node->name);
			}
	}		}
	}		}
	}		}

	void __init fill_ebus_device(int node, struct linux_ebus_device *dev)		void __init fill_ebus_device(struct device_node dp, struct linux_ebus_device dev)
	{		{
	struct linux_prom_registers regs[PROMREG_MAX];		struct linux_prom_registers *regs;
	struct linux_ebus_child *child;		struct linux_ebus_child *child;
	int irqs[PROMINTR_MAX];		int *irqs;
	char lbuf[128];
	int i, n, len;		int i, n, len;
	unsigned long baseaddr;		unsigned long baseaddr;

	dev->prom_node = node;		dev->prom_node = dp;
	prom_getstring(node, "name", lbuf, sizeof(lbuf));
	strcpy(dev->prom_name, lbuf);

	len = prom_getproperty(node, "reg", (void *)regs, sizeof(regs));		regs = of_get_property(dp, "reg", &len);
	if (len % sizeof(struct linux_prom_registers)) {		if (len % sizeof(struct linux_prom_registers)) {
	prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",		prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",
	dev->prom_name, len,		dev->prom_node->name, len,
	(int)sizeof(struct linux_prom_registers));		(int)sizeof(struct linux_prom_registers));
	panic(__FUNCTION__);		panic(__FUNCTION__);
	}		}
	@@ -197,7 +200,7 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev)
	if ((baseaddr = (unsigned long) ioremap(baseaddr,		if ((baseaddr = (unsigned long) ioremap(baseaddr,
	regs[i].reg_size)) == 0) {		regs[i].reg_size)) == 0) {
	panic("ebus: unable to remap dev %s",		panic("ebus: unable to remap dev %s",
	dev->prom_name);		dev->prom_node->name);
	}		}
	}		}
	dev->resource[i].start = baseaddr; /* XXX Unaligned */		dev->resource[i].start = baseaddr; /* XXX Unaligned */
	@@ -206,10 +209,11 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev)
	for (i = 0; i < PROMINTR_MAX; i++)		for (i = 0; i < PROMINTR_MAX; i++)
	dev->irqs[i] = PCI_IRQ_NONE;		dev->irqs[i] = PCI_IRQ_NONE;

	if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_name)) != 0) {		if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
	dev->num_irqs = 1;		dev->num_irqs = 1;
	} else if ((len = prom_getproperty(node, "interrupts",		} else {
	(char *)&irqs, sizeof(irqs))) == -1 \|\| len == 0) {		irqs = of_get_property(dp, "interrupts", &len);
			if (!irqs) {
	dev->num_irqs = 0;		dev->num_irqs = 0;
	if ((dev->irqs[0] = dev->bus->self->irq) != 0) {		if ((dev->irqs[0] = dev->bus->self->irq) != 0) {
	dev->num_irqs = 1;		dev->num_irqs = 1;
	@@ -220,15 +224,18 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev)
	if (irqs[0] == 0 \|\| irqs[0] >= 8) {		if (irqs[0] == 0 \|\| irqs[0] >= 8) {
	/* See above for the parent. XXX */		/* See above for the parent. XXX */
	printk("EBUS: %s got bad irq %d from PROM\n",		printk("EBUS: %s got bad irq %d from PROM\n",
	dev->prom_name, irqs[0]);		dev->prom_node->name, irqs[0]);
	dev->num_irqs = 0;		dev->num_irqs = 0;
	dev->irqs[0] = 0;		dev->irqs[0] = 0;
	} else {		} else {
	dev->irqs[0] = pcic_pin_to_irq(irqs[0], dev->prom_name);		dev->irqs[0] =
			pcic_pin_to_irq(irqs[0],
			dev->prom_node->name);
			}
	}		}
	}		}

	if ((node = prom_getchild(node))) {		if ((dp = dp->child) != NULL) {
	dev->children = (struct linux_ebus_child *)		dev->children = (struct linux_ebus_child *)
	ebus_alloc(sizeof(struct linux_ebus_child));		ebus_alloc(sizeof(struct linux_ebus_child));

	@@ -236,9 +243,9 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev)
	child->next = NULL;		child->next = NULL;
	child->parent = dev;		child->parent = dev;
	child->bus = dev->bus;		child->bus = dev->bus;
	fill_ebus_child(node, &regs[0], child);		fill_ebus_child(dp, child);

	while ((node = prom_getsibling(node)) != 0) {		while ((dp = dp->sibling) != NULL) {
	child->next = (struct linux_ebus_child *)		child->next = (struct linux_ebus_child *)
	ebus_alloc(sizeof(struct linux_ebus_child));		ebus_alloc(sizeof(struct linux_ebus_child));

	@@ -246,51 +253,49 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev)
	child->next = NULL;		child->next = NULL;
	child->parent = dev;		child->parent = dev;
	child->bus = dev->bus;		child->bus = dev->bus;
	fill_ebus_child(node, &regs[0], child);		fill_ebus_child(dp, child);
	}		}
	}		}
	}		}

	void __init ebus_init(void)		void __init ebus_init(void)
	{		{
	struct linux_prom_pci_registers regs[PROMREG_MAX];		struct linux_prom_pci_registers *regs;
	struct linux_pbm_info *pbm;		struct linux_pbm_info *pbm;
	struct linux_ebus_device *dev;		struct linux_ebus_device *dev;
	struct linux_ebus *ebus;		struct linux_ebus *ebus;
	struct ebus_system_entry *sp;		struct ebus_system_entry *sp;
	struct pci_dev *pdev;		struct pci_dev *pdev;
	struct pcidev_cookie *cookie;		struct pcidev_cookie *cookie;
	char lbuf[128];		struct device_node *dp;
	unsigned long addr, *base;		unsigned long addr, *base;
	unsigned short pci_command;		unsigned short pci_command;
	int nd, len, ebusnd;		int len, reg, nreg;
	int reg, nreg;
	int num_ebus = 0;		int num_ebus = 0;

	prom_getstring(prom_root_node, "name", lbuf, sizeof(lbuf));		dp = of_find_node_by_path("/");
	for (sp = ebus_blacklist; sp->esname != NULL; sp++) {		for (sp = ebus_blacklist; sp->esname != NULL; sp++) {
	if (strcmp(lbuf, sp->esname) == 0) {		if (strcmp(dp->name, sp->esname) == 0) {
	ebus_blackp = sp->ipt;		ebus_blackp = sp->ipt;
	break;		break;
	}		}
	}		}

	pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);		pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);
	if (!pdev) {		if (!pdev)
	return;		return;
	}
	cookie = pdev->sysdata;		cookie = pdev->sysdata;
	ebusnd = cookie->prom_node;		dp = cookie->prom_node;

	ebus_chain = ebus = (struct linux_ebus *)		ebus_chain = ebus = (struct linux_ebus *)
	ebus_alloc(sizeof(struct linux_ebus));		ebus_alloc(sizeof(struct linux_ebus));
	ebus->next = NULL;		ebus->next = NULL;

	while (ebusnd) {		while (dp) {
			struct device_node *nd;

	prom_getstring(ebusnd, "name", lbuf, sizeof(lbuf));		ebus->prom_node = dp;
	ebus->prom_node = ebusnd;
	strcpy(ebus->prom_name, lbuf);
	ebus->self = pdev;		ebus->self = pdev;
	ebus->parent = pbm = cookie->pbm;		ebus->parent = pbm = cookie->pbm;

	@@ -299,9 +304,8 @@ void __init ebus_init(void)
	pci_command \|= PCI_COMMAND_MASTER;		pci_command \|= PCI_COMMAND_MASTER;
	pci_write_config_word(pdev, PCI_COMMAND, pci_command);		pci_write_config_word(pdev, PCI_COMMAND, pci_command);

	len = prom_getproperty(ebusnd, "reg", (void *)regs,		regs = of_get_property(dp, "reg", &len);
	sizeof(regs));		if (!regs) {
	if (len == 0 \|\| len == -1) {
	prom_printf("%s: can't find reg property\n",		prom_printf("%s: can't find reg property\n",
	__FUNCTION__);		__FUNCTION__);
	prom_halt();		prom_halt();
	@@ -317,7 +321,7 @@ void __init ebus_init(void)
	*base++ = addr;		*base++ = addr;
	}		}

	nd = prom_getchild(ebusnd);		nd = dp->child;
	if (!nd)		if (!nd)
	goto next_ebus;		goto next_ebus;

	@@ -330,7 +334,7 @@ void __init ebus_init(void)
	dev->bus = ebus;		dev->bus = ebus;
	fill_ebus_device(nd, dev);		fill_ebus_device(nd, dev);

	while ((nd = prom_getsibling(nd)) != 0) {		while ((nd = nd->sibling) != NULL) {
	dev->next = (struct linux_ebus_device *)		dev->next = (struct linux_ebus_device *)
	ebus_alloc(sizeof(struct linux_ebus_device));		ebus_alloc(sizeof(struct linux_ebus_device));

	@@ -348,7 +352,7 @@ void __init ebus_init(void)
	break;		break;

	cookie = pdev->sysdata;		cookie = pdev->sysdata;
	ebusnd = cookie->prom_node;		dp = cookie->prom_node;

	ebus->next = (struct linux_ebus *)		ebus->next = (struct linux_ebus *)
	ebus_alloc(sizeof(struct linux_ebus));		ebus_alloc(sizeof(struct linux_ebus));

arch/sparc/kernel/pcic.c

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -31,6 +31,7 @@

	#include <asm/irq.h>		#include <asm/irq.h>
	#include <asm/oplib.h>		#include <asm/oplib.h>
			#include <asm/prom.h>
	#include <asm/pcic.h>		#include <asm/pcic.h>
	#include <asm/timer.h>		#include <asm/timer.h>
	#include <asm/uaccess.h>		#include <asm/uaccess.h>
	@@ -665,7 +666,7 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
	/* cookies */		/* cookies */
	pcp = pci_devcookie_alloc();		pcp = pci_devcookie_alloc();
	pcp->pbm = &pcic->pbm;		pcp->pbm = &pcic->pbm;
	pcp->prom_node = node;		pcp->prom_node = of_find_node_by_phandle(node);
	dev->sysdata = pcp;		dev->sysdata = pcp;

	/* fixing I/O to look like memory */		/* fixing I/O to look like memory */

arch/sparc/kernel/prom.c

0 → 100644

+474 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* Procedures for creating, accessing and interpreting the device tree.
			*
			* Paul Mackerras August 1996.
			* Copyright (C) 1996-2005 Paul Mackerras.
			*
			* Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
			* {engebret\|bergner}@us.ibm.com
			*
			* Adapted for sparc32 by David S. Miller davem@davemloft.net
			*
			* 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.
			*/

			#include <linux/kernel.h>
			#include <linux/types.h>
			#include <linux/string.h>
			#include <linux/mm.h>
			#include <linux/bootmem.h>
			#include <linux/module.h>

			#include <asm/prom.h>
			#include <asm/oplib.h>

			static struct device_node *allnodes;

			int of_device_is_compatible(struct device_node device, const char compat)
			{
			const char* cp;
			int cplen, l;

			cp = (char *) of_get_property(device, "compatible", &cplen);
			if (cp == NULL)
			return 0;
			while (cplen > 0) {
			if (strncmp(cp, compat, strlen(compat)) == 0)
			return 1;
			l = strlen(cp) + 1;
			cp += l;
			cplen -= l;
			}

			return 0;
			}
			EXPORT_SYMBOL(of_device_is_compatible);

			struct device_node of_get_parent(const struct device_node node)
			{
			struct device_node *np;

			if (!node)
			return NULL;

			np = node->parent;

			return np;
			}
			EXPORT_SYMBOL(of_get_parent);

			struct device_node of_get_next_child(const struct device_node node,
			struct device_node *prev)
			{
			struct device_node *next;

			next = prev ? prev->sibling : node->child;
			for (; next != 0; next = next->sibling) {
			break;
			}

			return next;
			}
			EXPORT_SYMBOL(of_get_next_child);

			struct device_node of_find_node_by_path(const char path)
			{
			struct device_node *np = allnodes;

			for (; np != 0; np = np->allnext) {
			if (np->full_name != 0 && strcmp(np->full_name, path) == 0)
			break;
			}

			return np;
			}
			EXPORT_SYMBOL(of_find_node_by_path);

			struct device_node *of_find_node_by_phandle(phandle handle)
			{
			struct device_node *np;

			for (np = allnodes; np != 0; np = np->allnext)
			if (np->node == handle)
			break;

			return np;
			}
			EXPORT_SYMBOL(of_find_node_by_phandle);

			struct device_node of_find_node_by_name(struct device_node from,
			const char *name)
			{
			struct device_node *np;

			np = from ? from->allnext : allnodes;
			for (; np != NULL; np = np->allnext)
			if (np->name != NULL && strcmp(np->name, name) == 0)
			break;

			return np;
			}
			EXPORT_SYMBOL(of_find_node_by_name);

			struct device_node of_find_node_by_type(struct device_node from,
			const char *type)
			{
			struct device_node *np;

			np = from ? from->allnext : allnodes;
			for (; np != 0; np = np->allnext)
			if (np->type != 0 && strcmp(np->type, type) == 0)
			break;

			return np;
			}
			EXPORT_SYMBOL(of_find_node_by_type);

			struct device_node of_find_compatible_node(struct device_node from,
			const char type, const char compatible)
			{
			struct device_node *np;

			np = from ? from->allnext : allnodes;
			for (; np != 0; np = np->allnext) {
			if (type != NULL
			&& !(np->type != 0 && strcmp(np->type, type) == 0))
			continue;
			if (of_device_is_compatible(np, compatible))
			break;
			}

			return np;
			}
			EXPORT_SYMBOL(of_find_compatible_node);

			struct property of_find_property(struct device_node np, const char *name,
			int *lenp)
			{
			struct property *pp;

			for (pp = np->properties; pp != 0; pp = pp->next) {
			if (strcmp(pp->name, name) == 0) {
			if (lenp != 0)
			*lenp = pp->length;
			break;
			}
			}
			return pp;
			}
			EXPORT_SYMBOL(of_find_property);

			/*
			* Find a property with a given name for a given node
			* and return the value.
			*/
			void of_get_property(struct device_node np, const char name, int lenp)
			{
			struct property *pp = of_find_property(np,name,lenp);
			return pp ? pp->value : NULL;
			}
			EXPORT_SYMBOL(of_get_property);

			int of_getintprop_default(struct device_node np, const char name, int def)
			{
			struct property *prop;
			int len;

			prop = of_find_property(np, name, &len);
			if (!prop \|\| len != 4)
			return def;

			return (int ) prop->value;
			}
			EXPORT_SYMBOL(of_getintprop_default);

			static unsigned int prom_early_allocated;

			static void * __init prom_early_alloc(unsigned long size)
			{
			void *ret;

			ret = __alloc_bootmem(size, SMP_CACHE_BYTES, 0UL);
			if (ret != NULL)
			memset(ret, 0, size);

			prom_early_allocated += size;

			return ret;
			}

			static int is_root_node(const struct device_node *dp)
			{
			if (!dp)
			return 0;

			return (dp->parent == NULL);
			}

			/* The following routines deal with the black magic of fully naming a
			* node.
			*
			* Certain well known named nodes are just the simple name string.
			*
			* Actual devices have an address specifier appended to the base name
			* string, like this "foo@addr". The "addr" can be in any number of
			* formats, and the platform plus the type of the node determine the
			* format and how it is constructed.
			*
			* For children of the ROOT node, the naming convention is fixed and
			* determined by whether this is a sun4u or sun4v system.
			*
			* For children of other nodes, it is bus type specific. So
			* we walk up the tree until we discover a "device_type" property
			* we recognize and we go from there.
			*/
			static void __init sparc32_path_component(struct device_node dp, char tmp_buf)
			{
			struct linux_prom_registers *regs;
			struct property *rprop;

			rprop = of_find_property(dp, "reg", NULL);
			if (!rprop)
			return;

			regs = rprop->value;
			sprintf(tmp_buf, "%s@%x,%x",
			dp->name,
			regs->which_io, regs->phys_addr);
			}

			/* "name@slot,offset" */
			static void __init sbus_path_component(struct device_node dp, char tmp_buf)
			{
			struct linux_prom_registers *regs;
			struct property *prop;

			prop = of_find_property(dp, "reg", NULL);
			if (!prop)
			return;

			regs = prop->value;
			sprintf(tmp_buf, "%s@%x,%x",
			dp->name,
			regs->which_io,
			regs->phys_addr);
			}

			/* "name@devnum[,func]" */
			static void __init pci_path_component(struct device_node dp, char tmp_buf)
			{
			struct linux_prom_pci_registers *regs;
			struct property *prop;
			unsigned int devfn;

			prop = of_find_property(dp, "reg", NULL);
			if (!prop)
			return;

			regs = prop->value;
			devfn = (regs->phys_hi >> 8) & 0xff;
			if (devfn & 0x07) {
			sprintf(tmp_buf, "%s@%x,%x",
			dp->name,
			devfn >> 3,
			devfn & 0x07);
			} else {
			sprintf(tmp_buf, "%s@%x",
			dp->name,
			devfn >> 3);
			}
			}

			/* "name@addrhi,addrlo" */
			static void __init ebus_path_component(struct device_node dp, char tmp_buf)
			{
			struct linux_prom_registers *regs;
			struct property *prop;

			prop = of_find_property(dp, "reg", NULL);
			if (!prop)
			return;

			regs = prop->value;

			sprintf(tmp_buf, "%s@%x,%x",
			dp->name,
			regs->which_io, regs->phys_addr);
			}

			static void __init __build_path_component(struct device_node dp, char tmp_buf)
			{
			struct device_node *parent = dp->parent;

			if (parent != NULL) {
			if (!strcmp(parent->type, "pci") \|\|
			!strcmp(parent->type, "pciex"))
			return pci_path_component(dp, tmp_buf);
			if (!strcmp(parent->type, "sbus"))
			return sbus_path_component(dp, tmp_buf);
			if (!strcmp(parent->type, "ebus"))
			return ebus_path_component(dp, tmp_buf);

			/* "isa" is handled with platform naming */
			}

			/* Use platform naming convention. */
			return sparc32_path_component(dp, tmp_buf);
			}

			static char * __init build_path_component(struct device_node *dp)
			{
			char tmp_buf[64], *n;

			tmp_buf[0] = '\0';
			__build_path_component(dp, tmp_buf);
			if (tmp_buf[0] == '\0')
			strcpy(tmp_buf, dp->name);

			n = prom_early_alloc(strlen(tmp_buf) + 1);
			strcpy(n, tmp_buf);

			return n;
			}

			static char * __init build_full_name(struct device_node *dp)
			{
			int len, ourlen, plen;
			char *n;

			plen = strlen(dp->parent->full_name);
			ourlen = strlen(dp->path_component_name);
			len = ourlen + plen + 2;

			n = prom_early_alloc(len);
			strcpy(n, dp->parent->full_name);
			if (!is_root_node(dp->parent)) {
			strcpy(n + plen, "/");
			plen++;
			}
			strcpy(n + plen, dp->path_component_name);

			return n;
			}

			static struct property * __init build_one_prop(phandle node, char *prev)
			{
			static struct property *tmp = NULL;
			struct property *p;
			int len;

			if (tmp) {
			p = tmp;
			memset(p, 0, sizeof(*p) + 32);
			tmp = NULL;
			} else
			p = prom_early_alloc(sizeof(struct property) + 32);

			p->name = (char *) (p + 1);
			if (prev == NULL) {
			prom_firstprop(node, p->name);
			} else {
			prom_nextprop(node, prev, p->name);
			}
			if (strlen(p->name) == 0) {
			tmp = p;
			return NULL;
			}
			p->length = prom_getproplen(node, p->name);
			if (p->length <= 0) {
			p->length = 0;
			} else {
			p->value = prom_early_alloc(p->length);
			len = prom_getproperty(node, p->name, p->value, p->length);
			}
			return p;
			}

			static struct property * __init build_prop_list(phandle node)
			{
			struct property head, tail;

			head = tail = build_one_prop(node, NULL);
			while(tail) {
			tail->next = build_one_prop(node, tail->name);
			tail = tail->next;
			}

			return head;
			}

			static char * __init get_one_property(phandle node, char *name)
			{
			char *buf = "<NULL>";
			int len;

			len = prom_getproplen(node, name);
			if (len > 0) {
			buf = prom_early_alloc(len);
			len = prom_getproperty(node, name, buf, len);
			}

			return buf;
			}

			static struct device_node * __init create_node(phandle node)
			{
			struct device_node *dp;

			if (!node)
			return NULL;

			dp = prom_early_alloc(sizeof(*dp));

			kref_init(&dp->kref);

			dp->name = get_one_property(node, "name");
			dp->type = get_one_property(node, "device_type");
			dp->node = node;

			/* Build interrupts later... */

			dp->properties = build_prop_list(node);

			return dp;
			}

			static struct device_node * __init build_tree(struct device_node parent, phandle node, struct device_node **nextp)
			{
			struct device_node *dp;

			dp = create_node(node);
			if (dp) {
			(nextp) = dp;
			*nextp = &dp->allnext;

			dp->parent = parent;
			dp->path_component_name = build_path_component(dp);
			dp->full_name = build_full_name(dp);

			dp->child = build_tree(dp, prom_getchild(node), nextp);

			dp->sibling = build_tree(parent, prom_getsibling(node), nextp);
			}

			return dp;
			}

			void __init prom_build_devicetree(void)
			{
			struct device_node **nextp;

			allnodes = create_node(prom_root_node);
			allnodes->path_component_name = "";
			allnodes->full_name = "/";

			nextp = &allnodes->allnext;
			allnodes->child = build_tree(allnodes,
			prom_getchild(allnodes->node),
			&nextp);
			printk("PROM: Built device tree with %u bytes of memory.\n",
			prom_early_allocated);
			}

arch/sparc/mm/init.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -31,6 +31,7 @@
	#include <asm/vaddrs.h>		#include <asm/vaddrs.h>
	#include <asm/pgalloc.h> /* bug in asm-generic/tlb.h: check_pgt_cache */		#include <asm/pgalloc.h> /* bug in asm-generic/tlb.h: check_pgt_cache */
	#include <asm/tlb.h>		#include <asm/tlb.h>
			#include <asm/prom.h>

	DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);		DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);

	@@ -349,6 +350,7 @@ void __init paging_init(void)
	protection_map[14] = PAGE_SHARED;		protection_map[14] = PAGE_SHARED;
	protection_map[15] = PAGE_SHARED;		protection_map[15] = PAGE_SHARED;
	btfixup();		btfixup();
			prom_build_devicetree();
	device_scan();		device_scan();
	}		}