acpi: Hide Chrome and coreboot specific devices
Some ACPI interfaces introduced by Chrome or coreboot do not
need drivers outside ChromeOS, for example Chrome EC or
coreboot table; or will be probed by direct ACPI calls (instead
of trying to find drivers by device IDs).
These interfaces should be set to hidden so non-ChromeOS systems,
for example Windows, won't have problem finding driver.
Interfaces changed:
- coreboot (BOOT0000), only used by Chrome OS / Linux kernel.
- Chrome OS EC
- Chrome OS EC PD
- Chrome OS TBMC
- Chrome OS RAMoops
BUG=b:72200466
BRANCH=eve
TEST=Boot into non-ChromeOS systems (for example Windows)
and checked ACPI devices on UI.
Change-Id: I9786cf9ee07b2c3f11509850604f2bfb3f3e710a
Signed-off-by: David Wu <David_Wu@quanta.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/1078211
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
Tested-by: Hung-Te Lin <hungte@chromium.org>
Trybot-Ready: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/28333
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c
index 012fe18..0701bbe8 100644
--- a/src/arch/x86/acpi.c
+++ b/src/arch/x86/acpi.c
@@ -324,7 +324,7 @@
acpigen_write_device("CTBL");
acpigen_write_coreboot_hid(COREBOOT_ACPI_ID_CBTABLE);
acpigen_write_name_integer("_UID", 0);
- acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
+ acpigen_write_STA(ACPI_STATUS_DEVICE_HIDDEN_ON);
acpigen_write_name("_CRS");
acpigen_write_resourcetemplate_header();
acpigen_write_mem32fixed(0, base, size);