1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
%{
/* sconfig, coreboot device tree compiler */
/* SPDX-License-Identifier: GPL-2.0-only */
#include <stdint.h>
#include "sconfig.h"
int yylex();
void yyerror(const char *s);
static struct bus *cur_parent;
static struct chip_instance *cur_chip_instance;
static struct fw_config_field *cur_field;
static struct fw_config_field_bits *cur_bits;
%}
%union {
struct device *dev;
struct chip_instance *chip_instance;
char *string;
uint64_t number;
}
%token CHIP DEVICE REGISTER ALIAS REFERENCE ASSOCIATION BOOL STATUS MANDATORY BUS RESOURCE END EQUALS HEX STRING PCI PNP I2C APIC CPU_CLUSTER CPU DOMAIN IRQ DRQ SLOT_DESC SMBIOS_DEV_INFO IO NUMBER SUBSYSTEMID INHERIT IOAPIC_IRQ IOAPIC PCIINT GENERIC SPI USB MMIO GPIO FW_CONFIG_TABLE FW_CONFIG_FIELD FW_CONFIG_OPTION FW_CONFIG_PROBE PIPE OPS
%%
devtree: { cur_parent = root_parent; } | devtree chip | devtree fw_config_table;
/* Ensure at least one `device` below each `chip`. */
chipchild_nondev: chip | registers | reference;
chipchild: device | chipchild_nondev;
chipchildren: chipchildren chipchild | /* empty */ ;
chipchildren_dev: device chipchildren | chipchild_nondev chipchildren_dev;
devicechildren: devicechildren device | devicechildren chip | devicechildren resource | devicechildren subsystemid | devicechildren ioapic_irq | devicechildren smbios_slot_desc | devicechildren smbios_dev_info | devicechildren registers | devicechildren fw_config_probe | devicechildren ops | /* empty */ ;
chip: CHIP STRING /* == path */ {
$<chip_instance>$ = new_chip_instance($<string>2);
chip_enqueue_tail(cur_chip_instance);
cur_chip_instance = $<chip_instance>$;
}
chipchildren_dev END {
cur_chip_instance = chip_dequeue_tail();
};
device: DEVICE BUS NUMBER /* == devnum */ alias status {
$<dev>$ = new_device_raw(cur_parent, cur_chip_instance, $<number>2, $<string>3, $<string>4, $<number>5);
cur_parent = $<dev>$->last_bus;
}
devicechildren END {
cur_parent = $<dev>6->parent;
};
device: DEVICE REFERENCE STRING status {
$<dev>$ = new_device_reference(cur_parent, cur_chip_instance, $<string>3, $<number>4);
cur_parent = $<dev>$->last_bus;
}
devicechildren END {
cur_parent = $<dev>5->parent;
};
alias: /* empty */ {
$<string>$ = NULL;
} | ALIAS STRING {
$<string>$ = $<string>2;
};
status: BOOL | STATUS ;
resource: RESOURCE NUMBER /* == resnum */ EQUALS NUMBER /* == resval */
{ add_resource(cur_parent, $<number>1, strtol($<string>2, NULL, 0), strtol($<string>4, NULL, 0)); } ;
reference: REFERENCE STRING /* == alias */ ASSOCIATION STRING /* == field in chip config */
{ add_reference(cur_chip_instance, $<string>4, $<string>2); } ;
registers: REGISTER STRING /* == regname */ EQUALS STRING /* == regval */
{ add_register(cur_chip_instance, $<string>2, $<string>4); } ;
subsystemid: SUBSYSTEMID NUMBER NUMBER
{ add_pci_subsystem_ids(cur_parent, strtol($<string>2, NULL, 16), strtol($<string>3, NULL, 16), 0); };
subsystemid: SUBSYSTEMID NUMBER NUMBER INHERIT
{ add_pci_subsystem_ids(cur_parent, strtol($<string>2, NULL, 16), strtol($<string>3, NULL, 16), 1); };
ioapic_irq: IOAPIC_IRQ NUMBER PCIINT NUMBER
{ add_ioapic_info(cur_parent, strtol($<string>2, NULL, 16), $<string>3, strtol($<string>4, NULL, 16)); };
smbios_slot_desc: SLOT_DESC STRING STRING STRING STRING
{ add_slot_desc(cur_parent, $<string>2, $<string>3, $<string>4, $<string>5); };
smbios_slot_desc: SLOT_DESC STRING STRING STRING
{ add_slot_desc(cur_parent, $<string>2, $<string>3, $<string>4, NULL); };
smbios_slot_desc: SLOT_DESC STRING STRING
{ add_slot_desc(cur_parent, $<string>2, $<string>3, NULL, NULL); };
smbios_dev_info: SMBIOS_DEV_INFO NUMBER STRING
{ add_smbios_dev_info(cur_parent, strtol($<string>2, NULL, 0), $<string>3); };
smbios_dev_info: SMBIOS_DEV_INFO NUMBER
{ add_smbios_dev_info(cur_parent, strtol($<string>2, NULL, 0), NULL); };
/* fw_config: firmware configuration table */
fw_config_table: FW_CONFIG_TABLE fw_config_table_children END { };
/* fw_config -> field */
fw_config_table_children: fw_config_table_children fw_config_field | /* empty */ ;
/* field -> option */
fw_config_field_children: fw_config_field_children fw_config_option | /* empty */ ;
/* <start-bit> <end-bit> */
fw_config_field_bits: NUMBER /* == start bit */ NUMBER /* == end bit */
{
append_fw_config_bits(&cur_bits, strtoul($<string>1, NULL, 0), strtoul($<string>2, NULL, 0));
};
/* field <start-bit> <end-bit>(| <start-bit> <end-bit>)* */
fw_config_field_bits_repeating: PIPE fw_config_field_bits fw_config_field_bits_repeating | /* empty */ ;
fw_config_field: FW_CONFIG_FIELD STRING fw_config_field_bits fw_config_field_bits_repeating
{ cur_field = new_fw_config_field($<string>2, cur_bits); }
fw_config_field_children END { cur_bits = NULL; };
/* field <bit> (for single-bit fields) */
fw_config_field: FW_CONFIG_FIELD STRING NUMBER /* == bit */ {
cur_bits = NULL;
append_fw_config_bits(&cur_bits, strtoul($<string>3, NULL, 0), strtoul($<string>3, NULL, 0));
cur_field = new_fw_config_field($<string>2, cur_bits);
}
fw_config_field_children END { cur_bits = NULL; };
/* field (for adding options to an existing field) */
fw_config_field: FW_CONFIG_FIELD STRING {
cur_field = get_fw_config_field($<string>2);
}
fw_config_field_children END { cur_bits = NULL; };
/* option <value> */
fw_config_option: FW_CONFIG_OPTION STRING NUMBER /* == field value */
{ add_fw_config_option(cur_field, $<string>2, strtoull($<string>3, NULL, 0)); };
/* probe <field> <option> */
fw_config_probe: FW_CONFIG_PROBE STRING /* == field */ STRING /* == option */
{ add_fw_config_probe(cur_parent, $<string>2, $<string>3); }
ops: OPS STRING /* == global identifier */
{ add_device_ops(cur_parent, $<string>2); }
%%
|
