From 5dff396befca2241f8323b422cbf6cc5b66a7488 Mon Sep 17 00:00:00 2001 From: David Wu Date: Wed, 21 Mar 2018 16:48:53 +0800 Subject: 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 Reviewed-on: https://chromium-review.googlesource.com/1078211 Reviewed-by: Hung-Te Lin Commit-Queue: Hung-Te Lin Tested-by: Hung-Te Lin Trybot-Ready: Hung-Te Lin Reviewed-on: https://review.coreboot.org/28333 Tested-by: build bot (Jenkins) --- src/vendorcode/google/chromeos/acpi/ramoops.asl | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/vendorcode/google/chromeos/acpi') diff --git a/src/vendorcode/google/chromeos/acpi/ramoops.asl b/src/vendorcode/google/chromeos/acpi/ramoops.asl index 5a8ed86632..810ff91a01 100644 --- a/src/vendorcode/google/chromeos/acpi/ramoops.asl +++ b/src/vendorcode/google/chromeos/acpi/ramoops.asl @@ -35,5 +35,9 @@ Scope (\_SB) Store (\RMOL, RLEN) Return (^RBUF) } + Method(_STA, 0) + { + Return (0xB) + } } } -- cgit v1.2.3