forked from Minki/linux
sparc: break out some PROM device-tree building code out into drivers/of
Transitioning into making this useful for architectures other than sparc. This is a verbatim copy of all functions/variables that've been moved. Signed-off-by: Andres Salomon <dilinger@queued.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Andres Salomon
Grant Likely
parent
8d1255627d
commit
9bdf6bab4e
@ -26,8 +26,6 @@
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#include "prom.h"
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void (*prom_build_more)(struct device_node *dp, struct device_node ***nextp);
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struct device_node *of_console_device;
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EXPORT_SYMBOL(of_console_device);
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@ -119,192 +117,6 @@ int of_find_in_proplist(const char *list, const char *match, int len)
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}
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EXPORT_SYMBOL(of_find_in_proplist);
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unsigned int prom_unique_id;
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static struct property * __init build_one_prop(phandle node, char *prev,
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char *special_name,
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void *special_val,
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int special_len)
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{
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static struct property *tmp = NULL;
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struct property *p;
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const char *name;
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if (tmp) {
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p = tmp;
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memset(p, 0, sizeof(*p) + 32);
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tmp = NULL;
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} else {
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p = prom_early_alloc(sizeof(struct property) + 32);
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p->unique_id = prom_unique_id++;
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}
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p->name = (char *) (p + 1);
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if (special_name) {
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strcpy(p->name, special_name);
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p->length = special_len;
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p->value = prom_early_alloc(special_len);
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memcpy(p->value, special_val, special_len);
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} else {
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if (prev == NULL) {
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name = prom_firstprop(node, p->name);
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} else {
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name = prom_nextprop(node, prev, p->name);
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}
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if (!name || strlen(name) == 0) {
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tmp = p;
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return NULL;
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}
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#ifdef CONFIG_SPARC32
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strcpy(p->name, name);
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#endif
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p->length = prom_getproplen(node, p->name);
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if (p->length <= 0) {
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p->length = 0;
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} else {
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int len;
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p->value = prom_early_alloc(p->length + 1);
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len = prom_getproperty(node, p->name, p->value,
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p->length);
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if (len <= 0)
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p->length = 0;
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((unsigned char *)p->value)[p->length] = '\0';
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}
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}
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return p;
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}
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static struct property * __init build_prop_list(phandle node)
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{
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struct property *head, *tail;
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head = tail = build_one_prop(node, NULL,
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".node", &node, sizeof(node));
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tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
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tail = tail->next;
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while(tail) {
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tail->next = build_one_prop(node, tail->name,
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NULL, NULL, 0);
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tail = tail->next;
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}
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return head;
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}
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static char * __init get_one_property(phandle node, const char *name)
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{
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char *buf = "<NULL>";
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int len;
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len = prom_getproplen(node, name);
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if (len > 0) {
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buf = prom_early_alloc(len);
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len = prom_getproperty(node, name, buf, len);
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}
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return buf;
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}
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static struct device_node * __init prom_create_node(phandle node,
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struct device_node *parent)
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{
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struct device_node *dp;
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if (!node)
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return NULL;
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dp = prom_early_alloc(sizeof(*dp));
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dp->unique_id = prom_unique_id++;
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dp->parent = parent;
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kref_init(&dp->kref);
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dp->name = get_one_property(node, "name");
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dp->type = get_one_property(node, "device_type");
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dp->phandle = node;
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dp->properties = build_prop_list(node);
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irq_trans_init(dp);
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return dp;
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}
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char * __init build_full_name(struct device_node *dp)
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{
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int len, ourlen, plen;
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char *n;
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plen = strlen(dp->parent->full_name);
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ourlen = strlen(dp->path_component_name);
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len = ourlen + plen + 2;
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n = prom_early_alloc(len);
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strcpy(n, dp->parent->full_name);
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if (!of_node_is_root(dp->parent)) {
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strcpy(n + plen, "/");
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plen++;
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}
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strcpy(n + plen, dp->path_component_name);
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return n;
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}
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static struct device_node * __init prom_build_tree(struct device_node *parent,
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phandle node,
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struct device_node ***nextp)
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{
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struct device_node *ret = NULL, *prev_sibling = NULL;
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struct device_node *dp;
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while (1) {
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dp = prom_create_node(node, parent);
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if (!dp)
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break;
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if (prev_sibling)
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prev_sibling->sibling = dp;
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if (!ret)
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ret = dp;
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prev_sibling = dp;
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*(*nextp) = dp;
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*nextp = &dp->allnext;
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dp->path_component_name = build_path_component(dp);
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dp->full_name = build_full_name(dp);
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dp->child = prom_build_tree(dp, prom_getchild(node), nextp);
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if (prom_build_more)
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prom_build_more(dp, nextp);
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node = prom_getsibling(node);
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}
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return ret;
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}
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unsigned int prom_early_allocated __initdata;
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void __init prom_build_devicetree(void)
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{
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struct device_node **nextp;
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allnodes = prom_create_node(prom_root_node, NULL);
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allnodes->path_component_name = "";
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allnodes->full_name = "/";
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nextp = &allnodes->allnext;
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allnodes->child = prom_build_tree(allnodes,
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prom_getchild(allnodes->phandle),
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&nextp);
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of_console_init();
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printk("PROM: Built device tree with %u bytes of memory.\n",
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prom_early_allocated);
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}
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#include "../../../drivers/of/pdt.c"
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215
drivers/of/pdt.c
Normal file
215
drivers/of/pdt.c
Normal file
@ -0,0 +1,215 @@
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/* prom_common.c: OF device tree support common code.
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*
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* Paul Mackerras August 1996.
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* Copyright (C) 1996-2005 Paul Mackerras.
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*
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* Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
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* {engebret|bergner}@us.ibm.com
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*
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* Adapted for sparc by David S. Miller davem@davemloft.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <asm/prom.h>
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#include <asm/oplib.h>
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#include <asm/leon.h>
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void (*prom_build_more)(struct device_node *dp, struct device_node ***nextp);
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unsigned int prom_unique_id;
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static struct property * __init build_one_prop(phandle node, char *prev,
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char *special_name,
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void *special_val,
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int special_len)
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{
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static struct property *tmp = NULL;
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struct property *p;
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const char *name;
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if (tmp) {
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p = tmp;
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memset(p, 0, sizeof(*p) + 32);
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tmp = NULL;
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} else {
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p = prom_early_alloc(sizeof(struct property) + 32);
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p->unique_id = prom_unique_id++;
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}
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p->name = (char *) (p + 1);
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if (special_name) {
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strcpy(p->name, special_name);
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p->length = special_len;
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p->value = prom_early_alloc(special_len);
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memcpy(p->value, special_val, special_len);
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} else {
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if (prev == NULL) {
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name = prom_firstprop(node, p->name);
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} else {
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name = prom_nextprop(node, prev, p->name);
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}
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if (!name || strlen(name) == 0) {
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tmp = p;
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return NULL;
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}
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#ifdef CONFIG_SPARC32
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strcpy(p->name, name);
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#endif
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p->length = prom_getproplen(node, p->name);
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if (p->length <= 0) {
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p->length = 0;
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} else {
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int len;
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p->value = prom_early_alloc(p->length + 1);
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len = prom_getproperty(node, p->name, p->value,
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p->length);
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if (len <= 0)
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p->length = 0;
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((unsigned char *)p->value)[p->length] = '\0';
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}
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}
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return p;
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}
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static struct property * __init build_prop_list(phandle node)
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{
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struct property *head, *tail;
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head = tail = build_one_prop(node, NULL,
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".node", &node, sizeof(node));
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tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
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tail = tail->next;
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while(tail) {
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tail->next = build_one_prop(node, tail->name,
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NULL, NULL, 0);
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tail = tail->next;
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}
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return head;
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}
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static char * __init get_one_property(phandle node, const char *name)
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{
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char *buf = "<NULL>";
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int len;
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len = prom_getproplen(node, name);
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if (len > 0) {
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buf = prom_early_alloc(len);
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len = prom_getproperty(node, name, buf, len);
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}
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return buf;
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}
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static struct device_node * __init prom_create_node(phandle node,
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struct device_node *parent)
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{
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struct device_node *dp;
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if (!node)
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return NULL;
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dp = prom_early_alloc(sizeof(*dp));
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dp->unique_id = prom_unique_id++;
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dp->parent = parent;
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kref_init(&dp->kref);
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dp->name = get_one_property(node, "name");
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dp->type = get_one_property(node, "device_type");
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dp->phandle = node;
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dp->properties = build_prop_list(node);
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irq_trans_init(dp);
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return dp;
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}
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char * __init build_full_name(struct device_node *dp)
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{
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int len, ourlen, plen;
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char *n;
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plen = strlen(dp->parent->full_name);
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ourlen = strlen(dp->path_component_name);
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len = ourlen + plen + 2;
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n = prom_early_alloc(len);
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strcpy(n, dp->parent->full_name);
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if (!of_node_is_root(dp->parent)) {
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strcpy(n + plen, "/");
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plen++;
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}
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strcpy(n + plen, dp->path_component_name);
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return n;
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}
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static struct device_node * __init prom_build_tree(struct device_node *parent,
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phandle node,
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struct device_node ***nextp)
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{
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struct device_node *ret = NULL, *prev_sibling = NULL;
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struct device_node *dp;
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while (1) {
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dp = prom_create_node(node, parent);
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if (!dp)
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break;
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if (prev_sibling)
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prev_sibling->sibling = dp;
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if (!ret)
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ret = dp;
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prev_sibling = dp;
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*(*nextp) = dp;
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*nextp = &dp->allnext;
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dp->path_component_name = build_path_component(dp);
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dp->full_name = build_full_name(dp);
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dp->child = prom_build_tree(dp, prom_getchild(node), nextp);
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if (prom_build_more)
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prom_build_more(dp, nextp);
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node = prom_getsibling(node);
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}
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return ret;
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}
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void __init prom_build_devicetree(void)
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{
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struct device_node **nextp;
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allnodes = prom_create_node(prom_root_node, NULL);
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allnodes->path_component_name = "";
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allnodes->full_name = "/";
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nextp = &allnodes->allnext;
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allnodes->child = prom_build_tree(allnodes,
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prom_getchild(allnodes->phandle),
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&nextp);
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of_console_init();
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printk("PROM: Built device tree with %u bytes of memory.\n",
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prom_early_allocated);
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}
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