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package: kernel: dtc: Add DTO support 

Add patch with the DT overlay support into the DTC package.

Signed-off-by: Marek Vasut <marex@denx.de>
owl
Marek Vasut 2017-10-22 22:21:21 +02:00 committed by John Crispin
parent f5468d2486
commit 6d2f3b1b19
1 changed files with 642 additions and 0 deletions
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642
package/kernel/dtc/patches/0001-scripts-dtc-Update-to-version-with-overlays.patch Normal file
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@ -0,0 +1,642 @@
From 5f84cb93eef9f8a8ff7f49d593893f252744d0fe Mon Sep 17 00:00:00 2001
From: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Date: Wed, 26 Aug 2015 18:28:08 +0300
Subject: [PATCH] scripts/dtc: Update to version with overlays
Update to mainline dtc with overlay support
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
---
checks.c | 20 +++++-
dtc-lexer.l | 5 ++
dtc-parser.y | 54 ++++++++++++++--
dtc.c | 83 ++++++++++++++++++++++--
dtc.h | 13 +++-
livetree.c | 202 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
treesource.c | 3 +
util.c | 2 +-
8 files changed, 367 insertions(+), 15 deletions(-)
diff --git a/checks.c b/checks.c
index 3bf0fa4..af25c2b 100644
--- a/checks.c
+++ b/checks.c
@@ -465,8 +465,12 @@ static void fixup_phandle_references(struct check *c, struct node *dt,
refnode = get_node_by_ref(dt, m->ref);
if (! refnode) {
- FAIL(c, "Reference to non-existent node or label \"%s\"\n",
- m->ref);
+ if (!source_is_plugin)
+ FAIL(c, "Reference to non-existent node or "
+ "label \"%s\"\n", m->ref);
+ else /* mark the entry as unresolved */
+ *((cell_t *)(prop->val.val + m->offset)) =
+ cpu_to_fdt32(0xffffffff);
continue;
}
@@ -559,7 +563,7 @@ static void check_reg_format(struct check *c, struct node *dt,
size_cells = node_size_cells(node->parent);
entrylen = (addr_cells + size_cells) * sizeof(cell_t);
- if ((prop->val.len % entrylen) != 0)
+ if (!entrylen || (prop->val.len % entrylen) != 0)
FAIL(c, "\"reg\" property in %s has invalid length (%d bytes) "
"(#address-cells == %d, #size-cells == %d)",
node->fullpath, prop->val.len, addr_cells, size_cells);
@@ -651,6 +655,15 @@ static void check_obsolete_chosen_interrupt_controller(struct check *c,
}
TREE_WARNING(obsolete_chosen_interrupt_controller, NULL);
+static void check_deprecated_plugin_syntax(struct check *c,
+ struct node *dt)
+{
+ if (deprecated_plugin_syntax_warning)
+ FAIL(c, "Use '/dts-v1/ /plugin/'; syntax. /dts-v1/; /plugin/; "
+ "is going to be removed in next versions");
+}
+TREE_WARNING(deprecated_plugin_syntax, NULL);
+
static struct check *check_table[] = {
&duplicate_node_names, &duplicate_property_names,
&node_name_chars, &node_name_format, &property_name_chars,
@@ -668,6 +681,7 @@ static struct check *check_table[] = {
&avoid_default_addr_size,
&obsolete_chosen_interrupt_controller,
+ &deprecated_plugin_syntax,
&always_fail,
};
diff --git a/dtc-lexer.l b/dtc-lexer.l
index 0ee1caf..dd44ba2 100644
--- a/dtc-lexer.l
+++ b/dtc-lexer.l
@@ -113,6 +113,11 @@ static void lexical_error(const char *fmt, ...);
return DT_V1;
}
+<*>"/plugin/" {
+ DPRINT("Keyword: /plugin/\n");
+ return DT_PLUGIN;
+ }
+
<*>"/memreserve/" {
DPRINT("Keyword: /memreserve/\n");
BEGIN_DEFAULT();
diff --git a/dtc-parser.y b/dtc-parser.y
index ea57e0a..7d9652d 100644
--- a/dtc-parser.y
+++ b/dtc-parser.y
@@ -19,6 +19,7 @@
*/
%{
#include <stdio.h>
+#include <inttypes.h>
#include "dtc.h"
#include "srcpos.h"
@@ -52,9 +53,11 @@ extern bool treesource_error;
struct node *nodelist;
struct reserve_info *re;
uint64_t integer;
+ bool is_plugin;
}
%token DT_V1
+%token DT_PLUGIN
%token DT_MEMRESERVE
%token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
%token DT_BITS
@@ -71,6 +74,7 @@ extern bool treesource_error;
%type <data> propdata
%type <data> propdataprefix
+%type <is_plugin> plugindecl
%type <re> memreserve
%type <re> memreserves
%type <array> arrayprefix
@@ -101,10 +105,39 @@ extern bool treesource_error;
%%
sourcefile:
- DT_V1 ';' memreserves devicetree
+ basesource
+ | pluginsource
+ ;
+
+basesource:
+ DT_V1 ';' plugindecl memreserves devicetree
+ {
+ source_is_plugin = $3;
+ if (source_is_plugin)
+ deprecated_plugin_syntax_warning = true;
+ the_boot_info = build_boot_info($4, $5,
+ guess_boot_cpuid($5));
+ }
+ ;
+
+plugindecl:
+ /* empty */
+ {
+ $$ = false;
+ }
+ | DT_PLUGIN ';'
+ {
+ $$ = true;
+ }
+ ;
+
+pluginsource:
+ DT_V1 DT_PLUGIN ';' memreserves devicetree
{
- the_boot_info = build_boot_info($3, $4,
- guess_boot_cpuid($4));
+ source_is_plugin = true;
+ deprecated_plugin_syntax_warning = false;
+ the_boot_info = build_boot_info($4, $5,
+ guess_boot_cpuid($5));
}
;
@@ -144,10 +177,14 @@ devicetree:
{
struct node *target = get_node_by_ref($1, $2);
- if (target)
+ if (target) {
merge_nodes(target, $3);
- else
- ERROR(&@2, "Label or path %s not found", $2);
+ } else {
+ if (symbol_fixup_support)
+ add_orphan_node($1, $3, $2);
+ else
+ ERROR(&@2, "Label or path %s not found", $2);
+ }
$$ = $1;
}
| devicetree DT_DEL_NODE DT_REF ';'
@@ -162,6 +199,11 @@ devicetree:
$$ = $1;
}
+ | /* empty */
+ {
+ /* build empty node */
+ $$ = name_node(build_node(NULL, NULL), "");
+ }
;
nodedef:
diff --git a/dtc.c b/dtc.c
index 8c4add6..ee37be9 100644
--- a/dtc.c
+++ b/dtc.c
@@ -18,6 +18,8 @@
* USA
*/
+#include <sys/stat.h>
+
#include "dtc.h"
#include "srcpos.h"
@@ -29,6 +31,8 @@ int reservenum; /* Number of memory reservation slots */
int minsize; /* Minimum blob size */
int padsize; /* Additional padding to blob */
int phandle_format = PHANDLE_BOTH; /* Use linux,phandle or phandle properties */
+int symbol_fixup_support;
+int auto_label_aliases;
static void fill_fullpaths(struct node *tree, const char *prefix)
{
@@ -51,7 +55,7 @@ static void fill_fullpaths(struct node *tree, const char *prefix)
#define FDT_VERSION(version) _FDT_VERSION(version)
#define _FDT_VERSION(version) #version
static const char usage_synopsis[] = "dtc [options] <input file>";
-static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
+static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:@Ahv";
static struct option const usage_long_opts[] = {
{"quiet", no_argument, NULL, 'q'},
{"in-format", a_argument, NULL, 'I'},
@@ -69,6 +73,8 @@ static struct option const usage_long_opts[] = {
{"phandle", a_argument, NULL, 'H'},
{"warning", a_argument, NULL, 'W'},
{"error", a_argument, NULL, 'E'},
+ {"symbols", no_argument, NULL, '@'},
+ {"auto-alias", no_argument, NULL, 'A'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{NULL, no_argument, NULL, 0x0},
@@ -99,16 +105,63 @@ static const char * const usage_opts_help[] = {
"\t\tboth - Both \"linux,phandle\" and \"phandle\" properties",
"\n\tEnable/disable warnings (prefix with \"no-\")",
"\n\tEnable/disable errors (prefix with \"no-\")",
+ "\n\tEnable symbols/fixup support",
+ "\n\tEnable auto-alias of labels",
"\n\tPrint this help and exit",
"\n\tPrint version and exit",
NULL,
};
+static const char *guess_type_by_name(const char *fname, const char *fallback)
+{
+ const char *s;
+
+ s = strrchr(fname, '.');
+ if (s == NULL)
+ return fallback;
+ if (!strcasecmp(s, ".dts"))
+ return "dts";
+ if (!strcasecmp(s, ".dtb"))
+ return "dtb";
+ return fallback;
+}
+
+static const char *guess_input_format(const char *fname, const char *fallback)
+{
+ struct stat statbuf;
+ uint32_t magic;
+ FILE *f;
+
+ if (stat(fname, &statbuf) != 0)
+ return fallback;
+
+ if (S_ISDIR(statbuf.st_mode))
+ return "fs";
+
+ if (!S_ISREG(statbuf.st_mode))
+ return fallback;
+
+ f = fopen(fname, "r");
+ if (f == NULL)
+ return fallback;
+ if (fread(&magic, 4, 1, f) != 1) {
+ fclose(f);
+ return fallback;
+ }
+ fclose(f);
+
+ magic = fdt32_to_cpu(magic);
+ if (magic == FDT_MAGIC)
+ return "dtb";
+
+ return guess_type_by_name(fname, fallback);
+}
+
int main(int argc, char *argv[])
{
struct boot_info *bi;
- const char *inform = "dts";
- const char *outform = "dts";
+ const char *inform = NULL;
+ const char *outform = NULL;
const char *outname = "-";
const char *depname = NULL;
bool force = false, sort = false;
@@ -186,7 +239,12 @@ int main(int argc, char *argv[])
case 'E':
parse_checks_option(false, true, optarg);
break;
-
+ case '@':
+ symbol_fixup_support = 1;
+ break;
+ case 'A':
+ auto_label_aliases = 1;
+ break;
case 'h':
usage(NULL);
default:
@@ -213,6 +271,17 @@ int main(int argc, char *argv[])
fprintf(depfile, "%s:", outname);
}
+ if (inform == NULL)
+ inform = guess_input_format(arg, "dts");
+ if (outform == NULL) {
+ outform = guess_type_by_name(outname, NULL);
+ if (outform == NULL) {
+ if (streq(inform, "dts"))
+ outform = "dtb";
+ else
+ outform = "dts";
+ }
+ }
if (streq(inform, "dts"))
bi = dt_from_source(arg);
else if (streq(inform, "fs"))
@@ -236,6 +305,12 @@ int main(int argc, char *argv[])
if (sort)
sort_tree(bi);
+ if (symbol_fixup_support || auto_label_aliases)
+ generate_label_node(bi->dt, bi->dt);
+
+ if (symbol_fixup_support)
+ generate_fixups_node(bi->dt, bi->dt);
+
if (streq(outname, "-")) {
outf = stdout;
} else {
diff --git a/dtc.h b/dtc.h
index 56212c8..d025111 100644
--- a/dtc.h
+++ b/dtc.h
@@ -20,7 +20,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
-
+#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
@@ -54,6 +54,14 @@ extern int reservenum; /* Number of memory reservation slots */
extern int minsize; /* Minimum blob size */
extern int padsize; /* Additional padding to blob */
extern int phandle_format; /* Use linux,phandle or phandle properties */
+extern int symbol_fixup_support;/* enable symbols & fixup support */
+extern int auto_label_aliases; /* auto generate labels -> aliases */
+
+/*
+ * Tree source globals
+ */
+extern bool source_is_plugin;
+extern bool deprecated_plugin_syntax_warning;
#define PHANDLE_LEGACY 0x1
#define PHANDLE_EPAPR 0x2
@@ -194,6 +202,7 @@ struct node *build_node_delete(void);
struct node *name_node(struct node *node, char *name);
struct node *chain_node(struct node *first, struct node *list);
struct node *merge_nodes(struct node *old_node, struct node *new_node);
+void add_orphan_node(struct node *old_node, struct node *new_node, char *ref);
void add_property(struct node *node, struct property *prop);
void delete_property_by_name(struct node *node, char *name);
@@ -244,6 +253,8 @@ struct boot_info {
struct boot_info *build_boot_info(struct reserve_info *reservelist,
struct node *tree, uint32_t boot_cpuid_phys);
void sort_tree(struct boot_info *bi);
+void generate_label_node(struct node *node, struct node *dt);
+void generate_fixups_node(struct node *node, struct node *dt);
/* Checks */
diff --git a/livetree.c b/livetree.c
index e229b84..1ef9fc4 100644
--- a/livetree.c
+++ b/livetree.c
@@ -216,6 +216,34 @@ struct node *merge_nodes(struct node *old_node, struct node *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 *ovl = xmalloc(sizeof(*ovl));
+ struct property *p;
+ struct data d = empty_data;
+ char *name;
+ int ret;
+
+ memset(ovl, 0, sizeof(*ovl));
+
+ d = data_add_marker(d, REF_PHANDLE, ref);
+ d = data_append_integer(d, 0xffffffff, 32);
+
+ p = build_property("target", d);
+ add_property(ovl, p);
+
+ ret = asprintf(&name, "fragment@%u",
+ next_orphan_fragment++);
+ if (ret == -1)
+ die("asprintf() failed\n");
+ name_node(ovl, name);
+ name_node(new_node, "__overlay__");
+
+ add_child(dt, ovl);
+ add_child(ovl, new_node);
+}
+
struct node *chain_node(struct node *first, struct node *list)
{
assert(first->next_sibling == NULL);
@@ -709,3 +737,177 @@ void sort_tree(struct boot_info *bi)
sort_reserve_entries(bi);
sort_node(bi->dt);
}
+
+void generate_label_node(struct node *node, struct node *dt)
+{
+ struct node *c, *an;
+ struct property *p;
+ struct label *l;
+ int has_label;
+ char *gen_node_name;
+
+ if (auto_label_aliases)
+ gen_node_name = "aliases";
+ else
+ gen_node_name = "__symbols__";
+
+ /* Make sure the label isn't already there */
+ has_label = 0;
+ for_each_label(node->labels, l) {
+ has_label = 1;
+ break;
+ }
+
+ if (has_label) {
+
+ /* an is the aliases/__symbols__ node */
+ an = get_subnode(dt, gen_node_name);
+ /* if no node exists, create it */
+ if (!an) {
+ an = build_node(NULL, NULL);
+ name_node(an, gen_node_name);
+ add_child(dt, an);
+ }
+
+ /* 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,
+ gen_node_name);
+ continue;
+ }
+
+ /* insert it */
+ p = build_property(l->label,
+ data_copy_escape_string(node->fullpath,
+ strlen(node->fullpath)));
+ add_property(an, p);
+ }
+
+ /* force allocation of a phandle for this node */
+ if (symbol_fixup_support)
+ (void)get_node_phandle(dt, node);
+ }
+
+ for_each_child(node, c)
+ generate_label_node(c, dt);
+}
+
+static void add_fixup_entry(struct node *dt, struct node *node,
+ struct property *prop, struct marker *m)
+{
+ struct node *fn; /* local fixup node */
+ struct property *p;
+ char *fixups_name = "__fixups__";
+ struct data d;
+ char *entry;
+ int ret;
+
+ /* fn is the node we're putting entries in */
+ fn = get_subnode(dt, fixups_name);
+ /* if no node exists, create it */
+ if (!fn) {
+ fn = build_node(NULL, NULL);
+ name_node(fn, fixups_name);
+ add_child(dt, fn);
+ }
+
+ ret = asprintf(&entry, "%s:%s:%u",
+ node->fullpath, prop->name, m->offset);
+ if (ret == -1)
+ die("asprintf() failed\n");
+
+ p = get_property(fn, m->ref);
+ d = data_append_data(p ? p->val : empty_data, entry, strlen(entry) + 1);
+ if (!p)
+ add_property(fn, build_property(m->ref, d));
+ else
+ p->val = d;
+}
+
+static void add_local_fixup_entry(struct node *dt, struct node *node,
+ struct property *prop, struct marker *m,
+ struct node *refnode)
+{
+ struct node *lfn, *wn, *nwn; /* local fixup node, walk node, new */
+ struct property *p;
+ struct data d;
+ char *local_fixups_name = "__local_fixups__";
+ char *s, *e, *comp;
+ int len;
+
+ /* fn is the node we're putting entries in */
+ lfn = get_subnode(dt, local_fixups_name);
+ /* if no node exists, create it */
+ if (!lfn) {
+ lfn = build_node(NULL, NULL);
+ name_node(lfn, local_fixups_name);
+ add_child(dt, lfn);
+ }
+
+ /* walk the path components creating nodes if they don't exist */
+ comp = NULL;
+ /* start skipping the first / */
+ s = node->fullpath + 1;
+ wn = lfn;
+ while (*s) {
+ /* retrieve path component */
+ e = strchr(s, '/');
+ if (e == NULL)
+ e = s + strlen(s);
+ len = e - s;
+ comp = xrealloc(comp, len + 1);
+ memcpy(comp, s, len);
+ comp[len] = '\0';
+
+ /* if no node exists, create it */
+ nwn = get_subnode(wn, comp);
+ if (!nwn) {
+ nwn = build_node(NULL, NULL);
+ name_node(nwn, strdup(comp));
+ add_child(wn, nwn);
+ }
+ wn = nwn;
+
+ /* last path component */
+ if (!*e)
+ break;
+
+ /* next path component */
+ s = e + 1;
+ }
+ free(comp);
+
+ p = get_property(wn, prop->name);
+ d = data_append_cell(p ? p->val : empty_data, (cell_t)m->offset);
+ if (!p)
+ add_property(wn, build_property(prop->name, d));
+ else
+ p->val = d;
+}
+
+void generate_fixups_node(struct node *node, struct node *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(dt, node, prop, m);
+ else
+ add_local_fixup_entry(dt, node, prop, m,
+ refnode);
+ }
+ }
+
+ for_each_child(node, c)
+ generate_fixups_node(c, dt);
+}
diff --git a/treesource.c b/treesource.c
index a55d1d1..e1d6657 100644
--- a/treesource.c
+++ b/treesource.c
@@ -28,6 +28,9 @@ extern YYLTYPE yylloc;
struct boot_info *the_boot_info;
bool treesource_error;
+bool source_is_plugin;
+bool deprecated_plugin_syntax_warning;
+
struct boot_info *dt_from_source(const char *fname)
{
the_boot_info = NULL;
diff --git a/util.c b/util.c
index 9d65226..cbb945b 100644
--- a/util.c
+++ b/util.c
@@ -349,7 +349,6 @@ int utilfdt_decode_type(const char *fmt, int *type, int *size)
void utilfdt_print_data(const char *data, int len)
{
int i;
- const char *p = data;
const char *s;
/* no data, don't print */
@@ -376,6 +375,7 @@ void utilfdt_print_data(const char *data, int len)
i < (len - 1) ? " " : "");
printf(">");
} else {
+ const unsigned char *p = (const unsigned char *)data;
printf(" = [");
for (i = 0; i < len; i++)
printf("%02x%s", *p++, i < len - 1 ? " " : "");
--
2.7.0