mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![John Bonesio](/assets/img/avatar_default.png)
Pull in recent changes from the main dtc repository. These changes primarily allow multiple device trees to be declared which are merged by dtc. This feature allows us to include a basic dts file and then provide more information for the specific system through the merging functionality. Changes pulled from git://git.jdl.com/software/dtc.git commit id: 37c0b6a0, "dtc: Add code to make diffing trees easier" Signed-off-by: John Bonesio <bones@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
345 lines
5.8 KiB
Text
345 lines
5.8 KiB
Text
/*
|
|
* (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 <stdio.h>
|
|
|
|
#include "dtc.h"
|
|
#include "srcpos.h"
|
|
|
|
YYLTYPE yylloc;
|
|
|
|
extern int yylex(void);
|
|
extern void print_error(char const *fmt, ...);
|
|
extern void yyerror(char const *s);
|
|
|
|
extern struct boot_info *the_boot_info;
|
|
extern int treesource_error;
|
|
|
|
static unsigned long long eval_literal(const char *s, int base, int bits);
|
|
%}
|
|
|
|
%union {
|
|
char *propnodename;
|
|
char *literal;
|
|
char *labelref;
|
|
unsigned int cbase;
|
|
uint8_t byte;
|
|
struct data data;
|
|
|
|
uint64_t addr;
|
|
cell_t cell;
|
|
struct property *prop;
|
|
struct property *proplist;
|
|
struct node *node;
|
|
struct node *nodelist;
|
|
struct reserve_info *re;
|
|
}
|
|
|
|
%token DT_V1
|
|
%token DT_MEMRESERVE
|
|
%token <propnodename> DT_PROPNODENAME
|
|
%token <literal> DT_LITERAL
|
|
%token <cbase> DT_BASE
|
|
%token <byte> DT_BYTE
|
|
%token <data> DT_STRING
|
|
%token <labelref> DT_LABEL
|
|
%token <labelref> DT_REF
|
|
%token DT_INCBIN
|
|
|
|
%type <data> propdata
|
|
%type <data> propdataprefix
|
|
%type <re> memreserve
|
|
%type <re> memreserves
|
|
%type <addr> addr
|
|
%type <data> celllist
|
|
%type <cell> cellval
|
|
%type <data> bytestring
|
|
%type <prop> propdef
|
|
%type <proplist> proplist
|
|
|
|
%type <node> devicetree
|
|
%type <node> nodedef
|
|
%type <node> subnode
|
|
%type <nodelist> subnodes
|
|
|
|
%%
|
|
|
|
sourcefile:
|
|
DT_V1 ';' memreserves devicetree
|
|
{
|
|
the_boot_info = build_boot_info($3, $4,
|
|
guess_boot_cpuid($4));
|
|
}
|
|
;
|
|
|
|
memreserves:
|
|
/* empty */
|
|
{
|
|
$$ = NULL;
|
|
}
|
|
| memreserve memreserves
|
|
{
|
|
$$ = chain_reserve_entry($1, $2);
|
|
}
|
|
;
|
|
|
|
memreserve:
|
|
DT_MEMRESERVE addr addr ';'
|
|
{
|
|
$$ = build_reserve_entry($2, $3);
|
|
}
|
|
| DT_LABEL memreserve
|
|
{
|
|
add_label(&$2->labels, $1);
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
addr:
|
|
DT_LITERAL
|
|
{
|
|
$$ = eval_literal($1, 0, 64);
|
|
}
|
|
;
|
|
|
|
devicetree:
|
|
'/' nodedef
|
|
{
|
|
$$ = name_node($2, "");
|
|
}
|
|
| devicetree '/' nodedef
|
|
{
|
|
$$ = merge_nodes($1, $3);
|
|
}
|
|
| devicetree DT_REF nodedef
|
|
{
|
|
struct node *target = get_node_by_ref($1, $2);
|
|
|
|
if (target)
|
|
merge_nodes(target, $3);
|
|
else
|
|
print_error("label or path, '%s', not found", $2);
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
nodedef:
|
|
'{' proplist subnodes '}' ';'
|
|
{
|
|
$$ = build_node($2, $3);
|
|
}
|
|
;
|
|
|
|
proplist:
|
|
/* empty */
|
|
{
|
|
$$ = NULL;
|
|
}
|
|
| proplist propdef
|
|
{
|
|
$$ = chain_property($2, $1);
|
|
}
|
|
;
|
|
|
|
propdef:
|
|
DT_PROPNODENAME '=' propdata ';'
|
|
{
|
|
$$ = build_property($1, $3);
|
|
}
|
|
| DT_PROPNODENAME ';'
|
|
{
|
|
$$ = build_property($1, empty_data);
|
|
}
|
|
| DT_LABEL propdef
|
|
{
|
|
add_label(&$2->labels, $1);
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
propdata:
|
|
propdataprefix DT_STRING
|
|
{
|
|
$$ = data_merge($1, $2);
|
|
}
|
|
| propdataprefix '<' celllist '>'
|
|
{
|
|
$$ = data_merge($1, $3);
|
|
}
|
|
| propdataprefix '[' bytestring ']'
|
|
{
|
|
$$ = data_merge($1, $3);
|
|
}
|
|
| propdataprefix DT_REF
|
|
{
|
|
$$ = data_add_marker($1, REF_PATH, $2);
|
|
}
|
|
| propdataprefix DT_INCBIN '(' DT_STRING ',' addr ',' addr ')'
|
|
{
|
|
FILE *f = srcfile_relative_open($4.val, NULL);
|
|
struct data d;
|
|
|
|
if ($6 != 0)
|
|
if (fseek(f, $6, SEEK_SET) != 0)
|
|
print_error("Couldn't seek to offset %llu in \"%s\": %s",
|
|
(unsigned long long)$6,
|
|
$4.val,
|
|
strerror(errno));
|
|
|
|
d = data_copy_file(f, $8);
|
|
|
|
$$ = data_merge($1, d);
|
|
fclose(f);
|
|
}
|
|
| propdataprefix DT_INCBIN '(' DT_STRING ')'
|
|
{
|
|
FILE *f = srcfile_relative_open($4.val, NULL);
|
|
struct data d = empty_data;
|
|
|
|
d = data_copy_file(f, -1);
|
|
|
|
$$ = data_merge($1, d);
|
|
fclose(f);
|
|
}
|
|
| propdata DT_LABEL
|
|
{
|
|
$$ = data_add_marker($1, LABEL, $2);
|
|
}
|
|
;
|
|
|
|
propdataprefix:
|
|
/* empty */
|
|
{
|
|
$$ = empty_data;
|
|
}
|
|
| propdata ','
|
|
{
|
|
$$ = $1;
|
|
}
|
|
| propdataprefix DT_LABEL
|
|
{
|
|
$$ = data_add_marker($1, LABEL, $2);
|
|
}
|
|
;
|
|
|
|
celllist:
|
|
/* empty */
|
|
{
|
|
$$ = empty_data;
|
|
}
|
|
| celllist cellval
|
|
{
|
|
$$ = data_append_cell($1, $2);
|
|
}
|
|
| celllist DT_REF
|
|
{
|
|
$$ = data_append_cell(data_add_marker($1, REF_PHANDLE,
|
|
$2), -1);
|
|
}
|
|
| celllist DT_LABEL
|
|
{
|
|
$$ = data_add_marker($1, LABEL, $2);
|
|
}
|
|
;
|
|
|
|
cellval:
|
|
DT_LITERAL
|
|
{
|
|
$$ = eval_literal($1, 0, 32);
|
|
}
|
|
;
|
|
|
|
bytestring:
|
|
/* empty */
|
|
{
|
|
$$ = empty_data;
|
|
}
|
|
| bytestring DT_BYTE
|
|
{
|
|
$$ = data_append_byte($1, $2);
|
|
}
|
|
| bytestring DT_LABEL
|
|
{
|
|
$$ = data_add_marker($1, LABEL, $2);
|
|
}
|
|
;
|
|
|
|
subnodes:
|
|
/* empty */
|
|
{
|
|
$$ = NULL;
|
|
}
|
|
| subnode subnodes
|
|
{
|
|
$$ = chain_node($1, $2);
|
|
}
|
|
| subnode propdef
|
|
{
|
|
print_error("syntax error: properties must precede subnodes");
|
|
YYERROR;
|
|
}
|
|
;
|
|
|
|
subnode:
|
|
DT_PROPNODENAME nodedef
|
|
{
|
|
$$ = name_node($2, $1);
|
|
}
|
|
| DT_LABEL subnode
|
|
{
|
|
add_label(&$2->labels, $1);
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
%%
|
|
|
|
void print_error(char const *fmt, ...)
|
|
{
|
|
va_list va;
|
|
|
|
va_start(va, fmt);
|
|
srcpos_verror(&yylloc, fmt, va);
|
|
va_end(va);
|
|
|
|
treesource_error = 1;
|
|
}
|
|
|
|
void yyerror(char const *s) {
|
|
print_error("%s", s);
|
|
}
|
|
|
|
static unsigned long long eval_literal(const char *s, int base, int bits)
|
|
{
|
|
unsigned long long val;
|
|
char *e;
|
|
|
|
errno = 0;
|
|
val = strtoull(s, &e, base);
|
|
if (*e)
|
|
print_error("bad characters in literal");
|
|
else if ((errno == ERANGE)
|
|
|| ((bits < 64) && (val >= (1ULL << bits))))
|
|
print_error("literal out of range");
|
|
else if (errno != 0)
|
|
print_error("bad literal");
|
|
return val;
|
|
}
|