u-boot/scripts/dtc/livetree.c

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/*
* (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
*
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "dtc.h"
/*
* Tree building functions
*/
void add_label(struct label **labels, char *label)
{
struct label *new;
/* Make sure the label isn't already there */
for_each_label_withdel(*labels, new)
if (streq(new->label, label)) {
new->deleted = 0;
return;
}
new = xmalloc(sizeof(*new));
memset(new, 0, sizeof(*new));
new->label = label;
new->next = *labels;
*labels = new;
}
void delete_labels(struct label **labels)
{
struct label *label;
for_each_label(*labels, label)
label->deleted = 1;
}
struct property *build_property(char *name, struct data val)
{
struct property *new = xmalloc(sizeof(*new));
memset(new, 0, sizeof(*new));
new->name = name;
new->val = val;
return new;
}
struct property *build_property_delete(char *name)
{
struct property *new = xmalloc(sizeof(*new));
memset(new, 0, sizeof(*new));
new->name = name;
new->deleted = 1;
return new;
}
struct property *chain_property(struct property *first, struct property *list)
{
assert(first->next == NULL);
first->next = list;
return first;
}
struct property *reverse_properties(struct property *first)
{
struct property *p = first;
struct property *head = NULL;
struct property *next;
while (p) {
next = p->next;
p->next = head;
head = p;
p = next;
}
return head;
}
struct node *build_node(struct property *proplist, struct node *children)
{
struct node *new = xmalloc(sizeof(*new));
struct node *child;
memset(new, 0, sizeof(*new));
new->proplist = reverse_properties(proplist);
new->children = children;
for_each_child(new, child) {
child->parent = new;
}
return new;
}
struct node *build_node_delete(void)
{
struct node *new = xmalloc(sizeof(*new));
memset(new, 0, sizeof(*new));
new->deleted = 1;
return new;
}
struct node *name_node(struct node *node, char *name)
{
assert(node->name == NULL);
node->name = name;
return node;
}
struct node *merge_nodes(struct node *old_node, struct node *new_node)
{
struct property *new_prop, *old_prop;
struct node *new_child, *old_child;
struct label *l;
old_node->deleted = 0;
/* Add new node labels to old node */
for_each_label_withdel(new_node->labels, l)
add_label(&old_node->labels, l->label);
/* Move properties from the new node to the old node. If there
* is a collision, replace the old value with the new */
while (new_node->proplist) {
/* Pop the property off the list */
new_prop = new_node->proplist;
new_node->proplist = new_prop->next;
new_prop->next = NULL;
if (new_prop->deleted) {
delete_property_by_name(old_node, new_prop->name);
free(new_prop);
continue;
}
/* Look for a collision, set new value if there is */
for_each_property_withdel(old_node, old_prop) {
if (streq(old_prop->name, new_prop->name)) {
/* Add new labels to old property */
for_each_label_withdel(new_prop->labels, l)
add_label(&old_prop->labels, l->label);
old_prop->val = new_prop->val;
old_prop->deleted = 0;
free(new_prop);
new_prop = NULL;
break;
}
}
/* if no collision occurred, add property to the old node. */
if (new_prop)
add_property(old_node, new_prop);
}
/* Move the override child nodes into the primary node. If
* there is a collision, then merge the nodes. */
while (new_node->children) {
/* Pop the child node off the list */
new_child = new_node->children;
new_node->children = new_child->next_sibling;
new_child->parent = NULL;
new_child->next_sibling = NULL;
if (new_child->deleted) {
delete_node_by_name(old_node, new_child->name);
free(new_child);
continue;
}
/* Search for a collision. Merge if there is */
for_each_child_withdel(old_node, old_child) {
if (streq(old_child->name, new_child->name)) {
merge_nodes(old_child, new_child);
new_child = NULL;
break;
}
}
/* if no collision occurred, add child to the old node. */
if (new_child)
add_child(old_node, new_child);
}
/* The new node contents are now merged into the old node. Free
* the new node. */
free(new_node);
return old_node;
}
void add_orphan_node(struct node *dt, struct node *new_node, char *ref)
{
static unsigned int next_orphan_fragment = 0;
struct node *node;
struct property *p;
struct data d = empty_data;
char *name;
d = data_add_marker(d, REF_PHANDLE, ref);
d = data_append_integer(d, 0xffffffff, 32);
p = build_property("target", d);
xasprintf(&name, "fragment@%u",
next_orphan_fragment++);
name_node(new_node, "__overlay__");
node = build_node(p, new_node);
name_node(node, name);
add_child(dt, node);
}
struct node *chain_node(struct node *first, struct node *list)
{
assert(first->next_sibling == NULL);
first->next_sibling = list;
return first;
}
void add_property(struct node *node, struct property *prop)
{
struct property **p;
prop->next = NULL;
p = &node->proplist;
while (*p)
p = &((*p)->next);
*p = prop;
}
void delete_property_by_name(struct node *node, char *name)
{
struct property *prop = node->proplist;
while (prop) {
if (streq(prop->name, name)) {
delete_property(prop);
return;
}
prop = prop->next;
}
}
void delete_property(struct property *prop)
{
prop->deleted = 1;
delete_labels(&prop->labels);
}
void add_child(struct node *parent, struct node *child)
{
struct node **p;
child->next_sibling = NULL;
child->parent = parent;
p = &parent->children;
while (*p)
p = &((*p)->next_sibling);
*p = child;
}
void delete_node_by_name(struct node *parent, char *name)
{
struct node *node = parent->children;
while (node) {
if (streq(node->name, name)) {
delete_node(node);
return;
}
node = node->next_sibling;
}
}
void delete_node(struct node *node)
{
struct property *prop;
struct node *child;
node->deleted = 1;
for_each_child(node, child)
delete_node(child);
for_each_property(node, prop)
delete_property(prop);
delete_labels(&node->labels);
}
void append_to_property(struct node *node,
char *name, const void *data, int len)
{
struct data d;
struct property *p;
p = get_property(node, name);
if (p) {
d = data_append_data(p->val, data, len);
p->val = d;
} else {
d = data_append_data(empty_data, data, len);
p = build_property(name, d);
add_property(node, p);
}
}
struct reserve_info *build_reserve_entry(uint64_t address, uint64_t size)
{
struct reserve_info *new = xmalloc(sizeof(*new));
memset(new, 0, sizeof(*new));
new->address = address;
new->size = size;
return new;
}
struct reserve_info *chain_reserve_entry(struct reserve_info *first,
struct reserve_info *list)
{
assert(first->next == NULL);
first->next = list;
return first;
}
struct reserve_info *add_reserve_entry(struct reserve_info *list,
struct reserve_info *new)
{
struct reserve_info *last;
new->next = NULL;
if (! list)
return new;
for (last = list; last->next; last = last->next)
;
last->next = new;
return list;
}
struct dt_info *build_dt_info(unsigned int dtsflags,
struct reserve_info *reservelist,
struct node *tree, uint32_t boot_cpuid_phys)
{
struct dt_info *dti;
dti = xmalloc(sizeof(*dti));
dti->dtsflags = dtsflags;
dti->reservelist = reservelist;
dti->dt = tree;
dti->boot_cpuid_phys = boot_cpuid_phys;
return dti;
}
/*
* Tree accessor functions
*/
const char *get_unitname(struct node *node)
{
if (node->name[node->basenamelen] == '\0')
return "";
else
return node->name + node->basenamelen + 1;
}
struct property *get_property(struct node *node, const char *propname)
{
struct property *prop;
for_each_property(node, prop)
if (streq(prop->name, propname))
return prop;
return NULL;
}
cell_t propval_cell(struct property *prop)
{
assert(prop->val.len == sizeof(cell_t));
return fdt32_to_cpu(*((fdt32_t *)prop->val.val));
}
cell_t propval_cell_n(struct property *prop, int n)
{
assert(prop->val.len / sizeof(cell_t) >= n);
return fdt32_to_cpu(*((fdt32_t *)prop->val.val + n));
}
struct property *get_property_by_label(struct node *tree, const char *label,
struct node **node)
{
struct property *prop;
struct node *c;
*node = tree;
for_each_property(tree, prop) {
struct label *l;
for_each_label(prop->labels, l)
if (streq(l->label, label))
return prop;
}
for_each_child(tree, c) {
prop = get_property_by_label(c, label, node);
if (prop)
return prop;
}
*node = NULL;
return NULL;
}
struct marker *get_marker_label(struct node *tree, const char *label,
struct node **node, struct property **prop)
{
struct marker *m;
struct property *p;
struct node *c;
*node = tree;
for_each_property(tree, p) {
*prop = p;
m = p->val.markers;
for_each_marker_of_type(m, LABEL)
if (streq(m->ref, label))
return m;
}
for_each_child(tree, c) {
m = get_marker_label(c, label, node, prop);
if (m)
return m;
}
*prop = NULL;
*node = NULL;
return NULL;
}
struct node *get_subnode(struct node *node, const char *nodename)
{
struct node *child;
for_each_child(node, child)
if (streq(child->name, nodename))
return child;
return NULL;
}
struct node *get_node_by_path(struct node *tree, const char *path)
{
const char *p;
struct node *child;
if (!path || ! (*path)) {
if (tree->deleted)
return NULL;
return tree;
}
while (path[0] == '/')
path++;
p = strchr(path, '/');
for_each_child(tree, child) {
scripts/dtc: Update to upstream version v1.4.4-50-gfe50bd1ecc1d This adds the following commits from upstream: fe50bd1ecc1d fdtget: Split out cell list display into a new function 62d812308d11 README: Add a note about test_tree1.dts 5bed86aee9e8 pylibfdt: Add support for fdt_subnode_offset() 46f31b65b3b3 pylibfdt: Add support for fdt_node_offset_by_phandle() a3ae43723687 pylibfdt: Add support for fdt_parent_offset() a198af80344c pylibfdt: Add support for fdt_get_phandle() b9eba92ea50f tests: Return a failure code when any tests fail 155faf6cc209 pylibfdt: Use local pylibfdt module 50e5cd07f325 pylibfdt: Add a test for use of uint32_t ab78860f09f5 pylibfdt: Add stdint include to fix uint32_t 36f511fb1113 tests: Add stacked overlay tests on fdtoverlay 1bb00655d3e5 fdt: Allow stacked overlays phandle references a33c2247ac8d Introduce fdt_setprop_placeholder() method 0016f8c2aa32 dtc: change default phandles to ePAPR style instead of both e3b9a9588a35 tests: fdtoverlay unit test 42409146f2db fdtoverlay: A tool that applies overlays aae22722fc8d manual: Document missing options 13ce6e1c2fc4 dtc: fix sprintf() format string error, again d990b8013889 Makefile: Fix build on MSYS2 and Cygwin 51f56dedf8ea Clean up shared library compile/link options 21a2bc896e3d Suppress expected error message in fdtdump test 2a42b14d0d03 dtc: check.c fix compile error a10cb3c818d3 Fix get_node_by_path string equality check 548aea2c436a fdtdump: Discourage use of fdtdump c2258841a785 fdtdump: Fix over-zealous version check 9067ee4be0e6 Fix a few whitespace and style nits e56f2b07be38 pylibfdt: Use setup.py to build the swig file 896f1c133265 pylibfdt: Use Makefile constructs to implement NO_PYTHON 90db6d9989ca pylibfdt: Allow setup.py to operate stand-alone e20d9658cd8f Add Coverity Scan support b04a2cf08862 pylibfdt: Fix code style in setup.py 1c5170d3a466 pylibfdt: Rename libfdt.swig to libfdt.i 580a9f6c2880 Add a libfdt function to write a property placeholder ab15256d8d02 pylibfdt: Use the call function to simplify the Makefile 9f2e3a3a1f19 pylibfdt: Use the correct libfdt version in the module e91c652af215 pylibfdt: Enable installation of Python module 8a892fd85d94 pylibfdt: Allow building to be disabled 741cdff85d3e .travis.yml: Add builds with and without Python library prerequisites 14c4171f4f9a pylibfdt: Use package_dir to set the package directory 89a5062ab231 pylibfdt: Use environment to pass C flags and files 4e0e0d049757 pylibfdt: Allow pkg-config to be supplied in the environment 6afd7d9688f5 Correct typo: s/pylibgfdt/pylibfdt/ 756ffc4f52f6 Build pylibfdt as part of the normal build process 8cb3896358e9 Adjust libfdt.h to work with swig b40aa8359aff Mention pylibfdt in the documentation 12cfb740cc76 Add tests for pylibfdt 50f250701631 Add an initial Python library for libfdt cdbb2b6c7a3a checks: Warn on node name unit-addresses with '0x' or leading 0s 4c15d5da17cc checks: Add bus checks for simple-bus buses 33c3985226d3 checks: Add bus checks for PCI buses Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-23 21:31:59 +00:00
if (p && (strlen(child->name) == p-path) &&
strneq(path, child->name, p-path))
return get_node_by_path(child, p+1);
else if (!p && streq(path, child->name))
return child;
}
return NULL;
}
struct node *get_node_by_label(struct node *tree, const char *label)
{
struct node *child, *node;
struct label *l;
assert(label && (strlen(label) > 0));
for_each_label(tree->labels, l)
if (streq(l->label, label))
return tree;
for_each_child(tree, child) {
node = get_node_by_label(child, label);
if (node)
return node;
}
return NULL;
}
struct node *get_node_by_phandle(struct node *tree, cell_t phandle)
{
struct node *child, *node;
assert((phandle != 0) && (phandle != -1));
if (tree->phandle == phandle) {
if (tree->deleted)
return NULL;
return tree;
}
for_each_child(tree, child) {
node = get_node_by_phandle(child, phandle);
if (node)
return node;
}
return NULL;
}
struct node *get_node_by_ref(struct node *tree, const char *ref)
{
if (streq(ref, "/"))
return tree;
else if (ref[0] == '/')
return get_node_by_path(tree, ref);
else
return get_node_by_label(tree, ref);
}
cell_t get_node_phandle(struct node *root, struct node *node)
{
static cell_t phandle = 1; /* FIXME: ick, static local */
if ((node->phandle != 0) && (node->phandle != -1))
return node->phandle;
while (get_node_by_phandle(root, phandle))
phandle++;
node->phandle = phandle;
if (!get_property(node, "linux,phandle")
&& (phandle_format & PHANDLE_LEGACY))
add_property(node,
build_property("linux,phandle",
data_append_cell(empty_data, phandle)));
if (!get_property(node, "phandle")
&& (phandle_format & PHANDLE_EPAPR))
add_property(node,
build_property("phandle",
data_append_cell(empty_data, phandle)));
/* If the node *does* have a phandle property, we must
* be dealing with a self-referencing phandle, which will be
* fixed up momentarily in the caller */
return node->phandle;
}
uint32_t guess_boot_cpuid(struct node *tree)
{
struct node *cpus, *bootcpu;
struct property *reg;
cpus = get_node_by_path(tree, "/cpus");
if (!cpus)
return 0;
bootcpu = cpus->children;
if (!bootcpu)
return 0;
reg = get_property(bootcpu, "reg");
if (!reg || (reg->val.len != sizeof(uint32_t)))
return 0;
/* FIXME: Sanity check node? */
return propval_cell(reg);
}
static int cmp_reserve_info(const void *ax, const void *bx)
{
const struct reserve_info *a, *b;
a = *((const struct reserve_info * const *)ax);
b = *((const struct reserve_info * const *)bx);
if (a->address < b->address)
return -1;
else if (a->address > b->address)
return 1;
else if (a->size < b->size)
return -1;
else if (a->size > b->size)
return 1;
else
return 0;
}
static void sort_reserve_entries(struct dt_info *dti)
{
struct reserve_info *ri, **tbl;
int n = 0, i = 0;
for (ri = dti->reservelist;
ri;
ri = ri->next)
n++;
if (n == 0)
return;
tbl = xmalloc(n * sizeof(*tbl));
for (ri = dti->reservelist;
ri;
ri = ri->next)
tbl[i++] = ri;
qsort(tbl, n, sizeof(*tbl), cmp_reserve_info);
dti->reservelist = tbl[0];
for (i = 0; i < (n-1); i++)
tbl[i]->next = tbl[i+1];
tbl[n-1]->next = NULL;
free(tbl);
}
static int cmp_prop(const void *ax, const void *bx)
{
const struct property *a, *b;
a = *((const struct property * const *)ax);
b = *((const struct property * const *)bx);
return strcmp(a->name, b->name);
}
static void sort_properties(struct node *node)
{
int n = 0, i = 0;
struct property *prop, **tbl;
for_each_property_withdel(node, prop)
n++;
if (n == 0)
return;
tbl = xmalloc(n * sizeof(*tbl));
for_each_property_withdel(node, prop)
tbl[i++] = prop;
qsort(tbl, n, sizeof(*tbl), cmp_prop);
node->proplist = tbl[0];
for (i = 0; i < (n-1); i++)
tbl[i]->next = tbl[i+1];
tbl[n-1]->next = NULL;
free(tbl);
}
static int cmp_subnode(const void *ax, const void *bx)
{
const struct node *a, *b;
a = *((const struct node * const *)ax);
b = *((const struct node * const *)bx);
return strcmp(a->name, b->name);
}
static void sort_subnodes(struct node *node)
{
int n = 0, i = 0;
struct node *subnode, **tbl;
for_each_child_withdel(node, subnode)
n++;
if (n == 0)
return;
tbl = xmalloc(n * sizeof(*tbl));
for_each_child_withdel(node, subnode)
tbl[i++] = subnode;
qsort(tbl, n, sizeof(*tbl), cmp_subnode);
node->children = tbl[0];
for (i = 0; i < (n-1); i++)
tbl[i]->next_sibling = tbl[i+1];
tbl[n-1]->next_sibling = NULL;
free(tbl);
}
static void sort_node(struct node *node)
{
struct node *c;
sort_properties(node);
sort_subnodes(node);
for_each_child_withdel(node, c)
sort_node(c);
}
void sort_tree(struct dt_info *dti)
{
sort_reserve_entries(dti);
sort_node(dti->dt);
}
/* utility helper to avoid code duplication */
static struct node *build_and_name_child_node(struct node *parent, char *name)
{
struct node *node;
node = build_node(NULL, NULL);
name_node(node, xstrdup(name));
add_child(parent, node);
return node;
}
static struct node *build_root_node(struct node *dt, char *name)
{
struct node *an;
an = get_subnode(dt, name);
if (!an)
an = build_and_name_child_node(dt, name);
if (!an)
die("Could not build root node /%s\n", name);
return an;
}
static bool any_label_tree(struct dt_info *dti, struct node *node)
{
struct node *c;
if (node->labels)
return true;
for_each_child(node, c)
if (any_label_tree(dti, c))
return true;
return false;
}
static void generate_label_tree_internal(struct dt_info *dti,
struct node *an, struct node *node,
bool allocph)
{
struct node *dt = dti->dt;
struct node *c;
struct property *p;
struct label *l;
/* if there are labels */
if (node->labels) {
/* now add the label in the node */
for_each_label(node->labels, l) {
/* check whether the label already exists */
p = get_property(an, l->label);
if (p) {
fprintf(stderr, "WARNING: label %s already"
" exists in /%s", l->label,
an->name);
continue;
}
/* insert it */
p = build_property(l->label,
data_copy_mem(node->fullpath,
strlen(node->fullpath) + 1));
add_property(an, p);
}
/* force allocation of a phandle for this node */
if (allocph)
(void)get_node_phandle(dt, node);
}
for_each_child(node, c)
generate_label_tree_internal(dti, an, c, allocph);
}
static bool any_fixup_tree(struct dt_info *dti, struct node *node)
{
struct node *c;
struct property *prop;
struct marker *m;
for_each_property(node, prop) {
m = prop->val.markers;
for_each_marker_of_type(m, REF_PHANDLE) {
if (!get_node_by_ref(dti->dt, m->ref))
return true;
}
}
for_each_child(node, c) {
if (any_fixup_tree(dti, c))
return true;
}
return false;
}
static void add_fixup_entry(struct dt_info *dti, struct node *fn,
struct node *node, struct property *prop,
struct marker *m)
{
char *entry;
/* m->ref can only be a REF_PHANDLE, but check anyway */
assert(m->type == REF_PHANDLE);
/* there shouldn't be any ':' in the arguments */
if (strchr(node->fullpath, ':') || strchr(prop->name, ':'))
die("arguments should not contain ':'\n");
xasprintf(&entry, "%s:%s:%u",
node->fullpath, prop->name, m->offset);
append_to_property(fn, m->ref, entry, strlen(entry) + 1);
free(entry);
}
static void generate_fixups_tree_internal(struct dt_info *dti,
struct node *fn,
struct node *node)
{
struct node *dt = dti->dt;
struct node *c;
struct property *prop;
struct marker *m;
struct node *refnode;
for_each_property(node, prop) {
m = prop->val.markers;
for_each_marker_of_type(m, REF_PHANDLE) {
refnode = get_node_by_ref(dt, m->ref);
if (!refnode)
add_fixup_entry(dti, fn, node, prop, m);
}
}
for_each_child(node, c)
generate_fixups_tree_internal(dti, fn, c);
}
static bool any_local_fixup_tree(struct dt_info *dti, struct node *node)
{
struct node *c;
struct property *prop;
struct marker *m;
for_each_property(node, prop) {
m = prop->val.markers;
for_each_marker_of_type(m, REF_PHANDLE) {
if (get_node_by_ref(dti->dt, m->ref))
return true;
}
}
for_each_child(node, c) {
if (any_local_fixup_tree(dti, c))
return true;
}
return false;
}
static void add_local_fixup_entry(struct dt_info *dti,
struct node *lfn, struct node *node,
struct property *prop, struct marker *m,
struct node *refnode)
{
struct node *wn, *nwn; /* local fixup node, walk node, new */
fdt32_t value_32;
char **compp;
int i, depth;
/* walk back retreiving depth */
depth = 0;
for (wn = node; wn; wn = wn->parent)
depth++;
/* allocate name array */
compp = xmalloc(sizeof(*compp) * depth);
/* store names in the array */
for (wn = node, i = depth - 1; wn; wn = wn->parent, i--)
compp[i] = wn->name;
/* walk the path components creating nodes if they don't exist */
for (wn = lfn, i = 1; i < depth; i++, wn = nwn) {
/* if no node exists, create it */
nwn = get_subnode(wn, compp[i]);
if (!nwn)
nwn = build_and_name_child_node(wn, compp[i]);
}
free(compp);
value_32 = cpu_to_fdt32(m->offset);
append_to_property(wn, prop->name, &value_32, sizeof(value_32));
}
static void generate_local_fixups_tree_internal(struct dt_info *dti,
struct node *lfn,
struct node *node)
{
struct node *dt = dti->dt;
struct node *c;
struct property *prop;
struct marker *m;
struct node *refnode;
for_each_property(node, prop) {
m = prop->val.markers;
for_each_marker_of_type(m, REF_PHANDLE) {
refnode = get_node_by_ref(dt, m->ref);
if (refnode)
add_local_fixup_entry(dti, lfn, node, prop, m, refnode);
}
}
for_each_child(node, c)
generate_local_fixups_tree_internal(dti, lfn, c);
}
void generate_label_tree(struct dt_info *dti, char *name, bool allocph)
{
if (!any_label_tree(dti, dti->dt))
return;
generate_label_tree_internal(dti, build_root_node(dti->dt, name),
dti->dt, allocph);
}
void generate_fixups_tree(struct dt_info *dti, char *name)
{
if (!any_fixup_tree(dti, dti->dt))
return;
generate_fixups_tree_internal(dti, build_root_node(dti->dt, name),
dti->dt);
}
void generate_local_fixups_tree(struct dt_info *dti, char *name)
{
if (!any_local_fixup_tree(dti, dti->dt))
return;
generate_local_fixups_tree_internal(dti, build_root_node(dti->dt, name),
dti->dt);
}