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sconfig: Allow setting device status in device tree

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For devices supporting both Linux and Windows, we may find some ACPI
devices that only need drivers in Linux and should not even be shown in
Windows Device Manager UI.

The new 'hidden' keyword in device tree 'device' statement allows
devices sharing same driver to call acpi_gen_writeSTA with different
values.

BUG=b:72200466
BRANCH=eve
TEST=Builds and boots properly on device eve

Change-Id: Iae881a294b122d3a581b456285d2992ab637fb8e
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/28566
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Hung-Te Lin
2018-09-10 10:51:26 +08:00
committed by Patrick Georgi
parent c1dc7932b5
commit 936dbe1d06
8 changed files with 255 additions and 235 deletions
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6
util/sconfig/sconfig.y
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@@ -31,7 +31,7 @@ static struct chip_instance *cur_chip_instance;
int number;
}
%token CHIP DEVICE REGISTER BOOL BUS RESOURCE END EQUALS HEX STRING PCI PNP I2C APIC CPU_CLUSTER CPU DOMAIN IRQ DRQ IO NUMBER SUBSYSTEMID INHERIT IOAPIC_IRQ IOAPIC PCIINT GENERIC SPI USB MMIO
%token CHIP DEVICE REGISTER BOOL HIDDEN BUS RESOURCE END EQUALS HEX STRING PCI PNP I2C APIC CPU_CLUSTER CPU DOMAIN IRQ DRQ IO NUMBER SUBSYSTEMID INHERIT IOAPIC_IRQ IOAPIC PCIINT GENERIC SPI USB MMIO
%%
devtree: { cur_parent = root_parent; } chip;
@@ -48,7 +48,7 @@ chip: CHIP STRING /* == path */ {
cur_chip_instance = chip_dequeue_tail();
};
device: DEVICE BUS NUMBER /* == devnum */ BOOL {
device: DEVICE BUS NUMBER /* == devnum */ status {
$<dev>$ = new_device(cur_parent, cur_chip_instance, $<number>2, $<string>3, $<number>4);
cur_parent = $<dev>$->last_bus;
}
@@ -56,6 +56,8 @@ device: DEVICE BUS NUMBER /* == devnum */ BOOL {
cur_parent = $<dev>5->parent;
};
status: BOOL | HIDDEN;
resource: RESOURCE NUMBER /* == resnum */ EQUALS NUMBER /* == resval */
{ add_resource(cur_parent, $<number>1, strtol($<string>2, NULL, 0), strtol($<string>4, NULL, 0)); } ;