e335c2e02f
This change extends the devicetree override one more layer and allows the chipset to provide the base devicetree. This allows the chipset to assign alias names to devices as well as set default register values. This works for both the baseboard devicetree.cb as well as variant overridetree.cb. chipset.cb: device pci 15.0 alias i2c0 off end devicetree.cb: device ref i2c0 on end BUG=b:156957424 Change-Id: Ia7500a62f6211243b519424ef3834b9e7615e2fd Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44037 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Furquan Shaikh <furquan@google.com>
124 lines
4.5 KiB
Text
Executable file
124 lines
4.5 KiB
Text
Executable file
%{
|
|
/* sconfig, coreboot device tree compiler */
|
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
|
|
#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;
|
|
|
|
%}
|
|
%union {
|
|
struct device *dev;
|
|
struct chip_instance *chip_instance;
|
|
char *string;
|
|
int 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 IO NUMBER SUBSYSTEMID INHERIT IOAPIC_IRQ IOAPIC PCIINT GENERIC SPI USB MMIO LPC ESPI FW_CONFIG_TABLE FW_CONFIG_FIELD FW_CONFIG_OPTION FW_CONFIG_PROBE
|
|
%%
|
|
devtree: { cur_parent = root_parent; } | devtree chip | devtree fw_config_table;
|
|
|
|
chipchildren: chipchildren device | chipchildren chip | chipchildren registers | chipchildren reference | /* empty */ ;
|
|
|
|
devicechildren: devicechildren device | devicechildren chip | devicechildren resource | devicechildren subsystemid | devicechildren ioapic_irq | devicechildren smbios_slot_desc | devicechildren registers | devicechildren fw_config_probe | /* empty */ ;
|
|
|
|
chip: CHIP STRING /* == path */ {
|
|
$<chip_instance>$ = new_chip_instance($<string>2);
|
|
chip_enqueue_tail(cur_chip_instance);
|
|
cur_chip_instance = $<chip_instance>$;
|
|
}
|
|
chipchildren 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, $<string>3, NULL, NULL); };
|
|
|
|
/* fw_config: firmware configuration table */
|
|
fw_config_table: FW_CONFIG_TABLE fw_config_table_children END { };
|
|
|
|
/* fw_config -> field */
|
|
fw_config_table_children: fw_config_table_children fw_config_field | /* empty */ ;
|
|
|
|
/* field -> option */
|
|
fw_config_field_children: fw_config_field_children fw_config_option | /* empty */ ;
|
|
|
|
/* field <start-bit> <end-bit> */
|
|
fw_config_field: FW_CONFIG_FIELD STRING NUMBER /* == start bit */ NUMBER /* == end bit */ {
|
|
cur_field = new_fw_config_field($<string>2, strtoul($<string>3, NULL, 0), strtoul($<string>4, NULL, 0));
|
|
}
|
|
fw_config_field_children END { };
|
|
|
|
/* field <bit> (for single-bit fields) */
|
|
fw_config_field: FW_CONFIG_FIELD STRING NUMBER /* == bit */ {
|
|
cur_field = new_fw_config_field($<string>2, strtoul($<string>3, NULL, 0), strtoul($<string>3, NULL, 0));
|
|
}
|
|
fw_config_field_children END { };
|
|
|
|
/* field (for adding options to an existing field) */
|
|
fw_config_field: FW_CONFIG_FIELD STRING {
|
|
cur_field = get_fw_config_field($<string>2);
|
|
}
|
|
fw_config_field_children END { };
|
|
|
|
/* option <value> */
|
|
fw_config_option: FW_CONFIG_OPTION STRING NUMBER /* == field value */
|
|
{ add_fw_config_option(cur_field, $<string>2, strtoul($<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); }
|
|
%%
|