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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-17 09:43:59 +08:00
linux-next/scripts/dtc/dtc-parser.y
Rob Herring c2e7075ca8 scripts/dtc: Update to upstream version v1.4.7-57-gf267e674d145
This adds the following commits from upstream:

f267e674d145 checks: Fix crash with multiple source annotations
3616b9a811b6 checks: Use source position information for check failures
2bdbd07a1223 checks: Make each message output atomic
a1eff70c02cf util: Add xa{v}sprintf_append functions
82a52ce4573b libfdt: Add a test for fdt_getprop_by_offset()
607b8586b383 PEP8 / Flake8 cleanups for setup.py
f9c0a425b648 Remove broken objdir / srcdir support
5182b5e6f28c pylibfdt: Use common PREFIX variable
d45bf1f5f2a6 Refine make tests_clean target
99284c4db9cb Refine pylibfdt_clean target
a4629cfaedfb Refine libfdt_clean target
08380fc43aa2 tests: Use modern octal literals for Python
8113c00b99d3 pylibfdt: Allow switch to Python 3 via environment variable PYTHON
11738cf01f15 libfdt: Don't use memcpy to handle unaligned reads on ARM
86a288a73670 checks: Restructure check_msg to decrease indentation
5667e7ef9a9a annotations: add the annotation functionality
8e20ccf52f90 annotations: add positions
ca930e20bb54 tests: Don't lose errors from make checkm
43366bb4eeee tests: Property count valgrind errors in wrapped tests
5062516fb8cb srcpos: Remove srcpos_empty
a3143fafbf83 Revert "annotations: add positions"
403cc79f06a1 checks: Update SPI bus check for 'spi-slave'
baa1d2cf7894 annotations: add positions
ff2ad38f6a5a Merge remote-tracking branch 'origin/pr/18'
aa7254d9cb17 libfdt: return correct value if #size-cells property is not present
49903aed7783 use ptrdiff_t modifier for printing pointer differences
da2b691ccf68 treesource: Fix dts output for phandles in middle of a sequence of ints
8f8b77a0d62d tests: Wrap check_align() calls with base_run_test()
522d81d572f2 Fix dts output with a REF_PATH marker
e45198c98359 Added test cases for target references
0fcffda15e9f Merge nodes with local target label references
1e4a0928f3b3 pylibfdt: Don't have setup.py depend on where it's invoked from
ca399b14956f pylibfdt: Eliminate run_setup make function
98972f1b3e33 pylibfdt: Improved version extraction
7ba2be6cda5f pylibfdt: Don't silence setup.py when V=1
7691f9d39301 pylibfdt: Make SETUP make variable
855b9963def9 pylibfdt: Simpler CFLAGS handling
47cafbeeb977 pylibfdt: Link extension module with libfdt rather than rebuilding
dd695d6afb19 pylibfdt: Correctly set build output directory
59327523d0d8 pylibfdt: We don't need include files from the base directory
e84742aa7b93 checks: fix simple-bus compatible matching
8c59a97ce096 Fix missing labels when emitting dts format
d448f9a5fd94 Revert dts output formatting changes of spaces around brackets

Signed-off-by: Rob Herring <robh@kernel.org>
2018-11-28 18:37:35 -06:00

588 lines
11 KiB
Plaintext

/*
* (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 <inttypes.h>
#include "dtc.h"
#include "srcpos.h"
extern int yylex(void);
extern void yyerror(char const *s);
#define ERROR(loc, ...) \
do { \
srcpos_error((loc), "Error", __VA_ARGS__); \
treesource_error = true; \
} while (0)
extern struct dt_info *parser_output;
extern bool treesource_error;
%}
%union {
char *propnodename;
char *labelref;
uint8_t byte;
struct data data;
struct {
struct data data;
int bits;
} array;
struct property *prop;
struct property *proplist;
struct node *node;
struct node *nodelist;
struct reserve_info *re;
uint64_t integer;
unsigned int flags;
}
%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
%token DT_DEL_PROP
%token DT_DEL_NODE
%token DT_OMIT_NO_REF
%token <propnodename> DT_PROPNODENAME
%token <integer> DT_LITERAL
%token <integer> DT_CHAR_LITERAL
%token <byte> DT_BYTE
%token <data> DT_STRING
%token <labelref> DT_LABEL
%token <labelref> DT_LABEL_REF
%token <labelref> DT_PATH_REF
%token DT_INCBIN
%type <data> propdata
%type <data> propdataprefix
%type <flags> header
%type <flags> headers
%type <re> memreserve
%type <re> memreserves
%type <array> arrayprefix
%type <data> bytestring
%type <prop> propdef
%type <proplist> proplist
%type <labelref> dt_ref
%type <node> devicetree
%type <node> nodedef
%type <node> subnode
%type <nodelist> subnodes
%type <integer> integer_prim
%type <integer> integer_unary
%type <integer> integer_mul
%type <integer> integer_add
%type <integer> integer_shift
%type <integer> integer_rela
%type <integer> integer_eq
%type <integer> integer_bitand
%type <integer> integer_bitxor
%type <integer> integer_bitor
%type <integer> integer_and
%type <integer> integer_or
%type <integer> integer_trinary
%type <integer> integer_expr
%%
sourcefile:
headers memreserves devicetree
{
parser_output = build_dt_info($1, $2, $3,
guess_boot_cpuid($3));
}
;
header:
DT_V1 ';'
{
$$ = DTSF_V1;
}
| DT_V1 ';' DT_PLUGIN ';'
{
$$ = DTSF_V1 | DTSF_PLUGIN;
}
;
headers:
header
| header headers
{
if ($2 != $1)
ERROR(&@2, "Header flags don't match earlier ones");
$$ = $1;
}
;
memreserves:
/* empty */
{
$$ = NULL;
}
| memreserve memreserves
{
$$ = chain_reserve_entry($1, $2);
}
;
memreserve:
DT_MEMRESERVE integer_prim integer_prim ';'
{
$$ = build_reserve_entry($2, $3);
}
| DT_LABEL memreserve
{
add_label(&$2->labels, $1);
$$ = $2;
}
;
dt_ref: DT_LABEL_REF | DT_PATH_REF;
devicetree:
'/' nodedef
{
$$ = name_node($2, "");
}
| devicetree '/' nodedef
{
$$ = merge_nodes($1, $3);
}
| dt_ref nodedef
{
/*
* We rely on the rule being always:
* versioninfo plugindecl memreserves devicetree
* so $-1 is what we want (plugindecl)
*/
if (!($<flags>-1 & DTSF_PLUGIN))
ERROR(&@2, "Label or path %s not found", $1);
$$ = add_orphan_node(
name_node(build_node(NULL, NULL, NULL),
""),
$2, $1);
}
| devicetree DT_LABEL dt_ref nodedef
{
struct node *target = get_node_by_ref($1, $3);
if (target) {
add_label(&target->labels, $2);
merge_nodes(target, $4);
} else
ERROR(&@3, "Label or path %s not found", $3);
$$ = $1;
}
| devicetree DT_PATH_REF nodedef
{
/*
* We rely on the rule being always:
* versioninfo plugindecl memreserves devicetree
* so $-1 is what we want (plugindecl)
*/
if ($<flags>-1 & DTSF_PLUGIN) {
add_orphan_node($1, $3, $2);
} else {
struct node *target = get_node_by_ref($1, $2);
if (target)
merge_nodes(target, $3);
else
ERROR(&@2, "Label or path %s not found", $2);
}
$$ = $1;
}
| devicetree DT_LABEL_REF nodedef
{
struct node *target = get_node_by_ref($1, $2);
if (target) {
merge_nodes(target, $3);
} else {
/*
* We rely on the rule being always:
* versioninfo plugindecl memreserves devicetree
* so $-1 is what we want (plugindecl)
*/
if ($<flags>-1 & DTSF_PLUGIN)
add_orphan_node($1, $3, $2);
else
ERROR(&@2, "Label or path %s not found", $2);
}
$$ = $1;
}
| devicetree DT_DEL_NODE dt_ref ';'
{
struct node *target = get_node_by_ref($1, $3);
if (target)
delete_node(target);
else
ERROR(&@3, "Label or path %s not found", $3);
$$ = $1;
}
| devicetree DT_OMIT_NO_REF dt_ref ';'
{
struct node *target = get_node_by_ref($1, $3);
if (target)
omit_node_if_unused(target);
else
ERROR(&@3, "Label or path %s not found", $3);
$$ = $1;
}
;
nodedef:
'{' proplist subnodes '}' ';'
{
$$ = 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_DEL_PROP DT_PROPNODENAME ';'
{
$$ = build_property_delete($2);
}
| DT_LABEL propdef
{
add_label(&$2->labels, $1);
$$ = $2;
}
;
propdata:
propdataprefix DT_STRING
{
$$ = data_merge($1, $2);
}
| propdataprefix arrayprefix '>'
{
$$ = data_merge($1, $2.data);
}
| propdataprefix '[' bytestring ']'
{
$$ = data_merge($1, $3);
}
| propdataprefix dt_ref
{
$1 = data_add_marker($1, TYPE_STRING, $2);
$$ = data_add_marker($1, REF_PATH, $2);
}
| propdataprefix DT_INCBIN '(' DT_STRING ',' integer_prim ',' integer_prim ')'
{
FILE *f = srcfile_relative_open($4.val, NULL);
struct data d;
if ($6 != 0)
if (fseek(f, $6, SEEK_SET) != 0)
die("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);
}
;
arrayprefix:
DT_BITS DT_LITERAL '<'
{
unsigned long long bits;
enum markertype type = TYPE_UINT32;
bits = $2;
switch (bits) {
case 8: type = TYPE_UINT8; break;
case 16: type = TYPE_UINT16; break;
case 32: type = TYPE_UINT32; break;
case 64: type = TYPE_UINT64; break;
default:
ERROR(&@2, "Array elements must be"
" 8, 16, 32 or 64-bits");
bits = 32;
}
$$.data = data_add_marker(empty_data, type, NULL);
$$.bits = bits;
}
| '<'
{
$$.data = data_add_marker(empty_data, TYPE_UINT32, NULL);
$$.bits = 32;
}
| arrayprefix integer_prim
{
if ($1.bits < 64) {
uint64_t mask = (1ULL << $1.bits) - 1;
/*
* Bits above mask must either be all zero
* (positive within range of mask) or all one
* (negative and sign-extended). The second
* condition is true if when we set all bits
* within the mask to one (i.e. | in the
* mask), all bits are one.
*/
if (($2 > mask) && (($2 | mask) != -1ULL))
ERROR(&@2, "Value out of range for"
" %d-bit array element", $1.bits);
}
$$.data = data_append_integer($1.data, $2, $1.bits);
}
| arrayprefix dt_ref
{
uint64_t val = ~0ULL >> (64 - $1.bits);
if ($1.bits == 32)
$1.data = data_add_marker($1.data,
REF_PHANDLE,
$2);
else
ERROR(&@2, "References are only allowed in "
"arrays with 32-bit elements.");
$$.data = data_append_integer($1.data, val, $1.bits);
}
| arrayprefix DT_LABEL
{
$$.data = data_add_marker($1.data, LABEL, $2);
}
;
integer_prim:
DT_LITERAL
| DT_CHAR_LITERAL
| '(' integer_expr ')'
{
$$ = $2;
}
;
integer_expr:
integer_trinary
;
integer_trinary:
integer_or
| integer_or '?' integer_expr ':' integer_trinary { $$ = $1 ? $3 : $5; }
;
integer_or:
integer_and
| integer_or DT_OR integer_and { $$ = $1 || $3; }
;
integer_and:
integer_bitor
| integer_and DT_AND integer_bitor { $$ = $1 && $3; }
;
integer_bitor:
integer_bitxor
| integer_bitor '|' integer_bitxor { $$ = $1 | $3; }
;
integer_bitxor:
integer_bitand
| integer_bitxor '^' integer_bitand { $$ = $1 ^ $3; }
;
integer_bitand:
integer_eq
| integer_bitand '&' integer_eq { $$ = $1 & $3; }
;
integer_eq:
integer_rela
| integer_eq DT_EQ integer_rela { $$ = $1 == $3; }
| integer_eq DT_NE integer_rela { $$ = $1 != $3; }
;
integer_rela:
integer_shift
| integer_rela '<' integer_shift { $$ = $1 < $3; }
| integer_rela '>' integer_shift { $$ = $1 > $3; }
| integer_rela DT_LE integer_shift { $$ = $1 <= $3; }
| integer_rela DT_GE integer_shift { $$ = $1 >= $3; }
;
integer_shift:
integer_shift DT_LSHIFT integer_add { $$ = $1 << $3; }
| integer_shift DT_RSHIFT integer_add { $$ = $1 >> $3; }
| integer_add
;
integer_add:
integer_add '+' integer_mul { $$ = $1 + $3; }
| integer_add '-' integer_mul { $$ = $1 - $3; }
| integer_mul
;
integer_mul:
integer_mul '*' integer_unary { $$ = $1 * $3; }
| integer_mul '/' integer_unary
{
if ($3 != 0) {
$$ = $1 / $3;
} else {
ERROR(&@$, "Division by zero");
$$ = 0;
}
}
| integer_mul '%' integer_unary
{
if ($3 != 0) {
$$ = $1 % $3;
} else {
ERROR(&@$, "Division by zero");
$$ = 0;
}
}
| integer_unary
;
integer_unary:
integer_prim
| '-' integer_unary { $$ = -$2; }
| '~' integer_unary { $$ = ~$2; }
| '!' integer_unary { $$ = !$2; }
;
bytestring:
/* empty */
{
$$ = data_add_marker(empty_data, TYPE_UINT8, NULL);
}
| bytestring DT_BYTE
{
$$ = data_append_byte($1, $2);
}
| bytestring DT_LABEL
{
$$ = data_add_marker($1, LABEL, $2);
}
;
subnodes:
/* empty */
{
$$ = NULL;
}
| subnode subnodes
{
$$ = chain_node($1, $2);
}
| subnode propdef
{
ERROR(&@2, "Properties must precede subnodes");
YYERROR;
}
;
subnode:
DT_PROPNODENAME nodedef
{
$$ = name_node($2, $1);
}
| DT_DEL_NODE DT_PROPNODENAME ';'
{
$$ = name_node(build_node_delete(&@$), $2);
}
| DT_OMIT_NO_REF subnode
{
$$ = omit_node_if_unused($2);
}
| DT_LABEL subnode
{
add_label(&$2->labels, $1);
$$ = $2;
}
;
%%
void yyerror(char const *s)
{
ERROR(&yylloc, "%s", s);
}