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authorDavid Wu <david_wu@quanta.corp-partner.google.com>2018-03-21 16:48:53 +0800
committerMartin Roth <martinroth@google.com>2018-08-28 15:14:42 +0000
commit5dff396befca2241f8323b422cbf6cc5b66a7488 (patch)
treeab023988a647046de152cee0c90f871b981e8c09 /src/vendorcode
parent216345dd2480cf30df4e3ec8f323ce75f30e222e (diff)
downloadcoreboot-5dff396befca2241f8323b422cbf6cc5b66a7488.tar.xz
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>
Diffstat (limited to 'src/vendorcode')
-rw-r--r--src/vendorcode/google/chromeos/acpi/ramoops.asl4
1 files changed, 4 insertions, 0 deletions
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)
+ }
}
}