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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
*/
%glr-parser
%locations
%{
#include "dtc.h"
int yylex(void);
void yyerror(char const *);
cell_t cell_from_string(char *s, unsigned int base);
extern struct boot_info *the_boot_info;
%}
%union {
cell_t cval;
unsigned int cbase;
u8 byte;
char *str;
struct data data;
struct property *prop;
struct property *proplist;
struct node *node;
struct node *nodelist;
int datalen;
int hexlen;
u64 addr;
struct reserve_info *re;
}
%token DT_MEMRESERVE
%token <addr> DT_ADDR
%token <str> DT_PROPNAME
%token <str> DT_NODENAME
%token <cbase> DT_BASE
%token <str> DT_CELL
%token <byte> DT_BYTE
%token <data> DT_STRING
%token <str> DT_UNIT
%token <str> DT_LABEL
%token <str> DT_REF
%type <data> propdata
%type <data> propdataprefix
%type <re> memreserve
%type <re> memreserves
%type <cbase> opt_cell_base
%type <data> celllist
%type <data> bytestring
%type <prop> propdef
%type <proplist> proplist
%type <node> devicetree
%type <node> nodedef
%type <node> subnode
%type <nodelist> subnodes
%type <str> label
%type <str> nodename
%%
sourcefile: memreserves devicetree {
the_boot_info = build_boot_info($1, $2);
}
;
memreserves: memreserve memreserves {
$$ = chain_reserve_entry($1, $2);
}
| /* empty */ {
$$ = NULL;
}
;
memreserve: DT_MEMRESERVE DT_ADDR DT_ADDR ';' {
$$ = build_reserve_entry($2, $3, NULL);
}
| DT_MEMRESERVE DT_ADDR '-' DT_ADDR ';' {
$$ = build_reserve_entry($2, $4 - $2 + 1, NULL);
}
;
devicetree: '/' nodedef {
$$ = name_node($2, "", NULL);
}
;
nodedef: '{' proplist subnodes '}' ';' {
$$ = build_node($2, $3);
}
;
proplist: propdef proplist {
$$ = chain_property($1, $2);
}
| /* empty */ {
$$ = NULL;
}
;
propdef: label DT_PROPNAME '=' propdata ';' {
$$ = build_property($2, $4, $1);
}
| label DT_PROPNAME ';' {
$$ = build_property($2, empty_data, $1);
}
;
propdata: propdataprefix DT_STRING { $$ = data_merge($1, $2); }
| propdataprefix '<' celllist '>' {
$$ = data_merge(data_append_align($1, sizeof(cell_t)), $3);
}
| propdataprefix '[' bytestring ']' { $$ = data_merge($1, $3); }
;
propdataprefix: propdata ',' { $$ = $1; }
| /* empty */ { $$ = empty_data; }
;
opt_cell_base:
/* empty */
{ $$ = 16; }
| DT_BASE
;
celllist: celllist opt_cell_base DT_CELL {
$$ = data_append_cell($1,
cell_from_string($3, $2));
}
| celllist DT_REF {
$$ = data_append_cell(data_add_fixup($1, $2), -1);
}
| /* empty */ { $$ = empty_data; }
;
bytestring: bytestring DT_BYTE { $$ = data_append_byte($1, $2); }
| /* empty */ { $$ = empty_data; }
;
subnodes: subnode subnodes {
$$ = chain_node($1, $2);
}
| /* empty */ { $$ = NULL; }
;
subnode: label nodename nodedef { $$ = name_node($3, $2, $1); }
;
nodename: DT_NODENAME { $$ = $1; }
| DT_PROPNAME { $$ = $1; }
;
label: DT_LABEL { $$ = $1; }
| /* empty */ { $$ = NULL; }
;
%%
void yyerror (char const *s)
{
fprintf (stderr, "%s at line %d\n", s, yylloc.first_line);
}
/*
* Convert a string representation of a numeric cell
* in the given base into a cell.
*
* FIXME: The string "abc123", base 10, should be flagged
* as an error due to the leading "a", but isn't yet.
*/
cell_t cell_from_string(char *s, unsigned int base)
{
cell_t c;
c = strtoul(s, NULL, base);
if (errno == EINVAL || errno == ERANGE) {
fprintf(stderr,
"Line %d: Invalid cell value '%s'; %d assumed\n",
yylloc.first_line, s, c);
}
return c;
}
|
