From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by lists.gnu.org with archive (Exim 4.71) id 1bSOoZ-00083U-6m for mharc-grub-devel@gnu.org; Wed, 27 Jul 2016 09:23:59 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34376) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bSMtO-00044Z-PQ for grub-devel@gnu.org; Wed, 27 Jul 2016 07:20:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bSMtL-0005mW-El for grub-devel@gnu.org; Wed, 27 Jul 2016 07:20:50 -0400 Received: from mailout2.hostsharing.net ([83.223.90.233]:40623) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bSMtL-0005kB-7n for grub-devel@gnu.org; Wed, 27 Jul 2016 07:20:47 -0400 Received: from h08.hostsharing.net (h08.hostsharing.net [83.223.95.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mailout2.hostsharing.net (Postfix) with ESMTPS id 3CE8710189907; Wed, 27 Jul 2016 13:20:43 +0200 (CEST) Received: from localhost (4-38-90-81.adsl.cmo.de [81.90.38.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by h08.hostsharing.net (Postfix) with ESMTPSA id A8485603E02A; Wed, 27 Jul 2016 13:20:41 +0200 (CEST) X-Mailbox-Line: From 8743c01825c3d16f812acec7525e5c87f4eed37a Mon Sep 17 00:00:00 2001 Message-Id: From: Lukas Wunner Date: Wed, 27 Jul 2016 13:20:41 +0200 Subject: [PATCH 0/6] Apple device properties To: linux-efi@vger.kernel.org, Matt Fleming , linux-kernel@vger.kernel.org Cc: Andreas Noever , Pierre Moreau , reverser@put.as, grub-devel@gnu.org, x86@kernel.org, Aleksey Makarov , "Rafael J. Wysocki" , Mika Westerberg , Andy Shevchenko , Greg Kroah-Hartman X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 83.223.90.233 X-Mailman-Approved-At: Wed, 27 Jul 2016 09:23:57 -0400 X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Jul 2016 11:20:52 -0000 Apple EFI drivers supply device properties which are needed to support Macs optimally. This series extends the efistub to retrieve the device properties before ExitBootServices is called (patch [1/6]). They are assigned to devices in an fs_initcall (patch [5/6]). As a first use case, the Thunderbolt driver is amended to take advantage of the Device ROM supplied by EFI (patch [6/6]). A by-product is a parser for EFI Device Paths which finds the struct device corresponding to a given path. This is needed to assign properties to their devices (patch [3/6]). I've pushed these patches to GitHub where they can be reviewed more comfortably with green/red highlighting: https://github.com/l1k/linux/commits/apple_properties_v1 It would be good if one of the resident EFI experts could look over patch [1/6] to see if I've made any mistakes that might prevent this from working on 32 bit. It was only tested on 64 bit, I don't know anyone with an older Mac who could test this. Specifically, is the following okay: efi_early->call((unsigned long)sys_table->boottime->locate_protocol, ...) It would be convenient to have LocateProtocol or LocateHandleBuffer in struct efi_config so that they can be called with efi_call_early(). Would a patch to add those be entertained? Right now we only offer LocateHandle and HandleProtocol, which is somewhat cumbersome and needs more code as the setup_pci() functions show. Thanks, Lukas Lukas Wunner (6): efi: Retrieve Apple device properties ACPI / bus: Make acpi_get_first_physical_node() public efi: Add device path parser driver core: Don't leak secondary fwnode on device removal efi: Assign Apple device properties thunderbolt: Use Device ROM retrieved from EFI Documentation/kernel-parameters.txt | 5 + arch/x86/boot/compressed/eboot.c | 55 ++++++++ arch/x86/include/uapi/asm/bootparam.h | 1 + drivers/acpi/internal.h | 1 - drivers/base/core.c | 1 + drivers/firmware/efi/Kconfig | 16 +++ drivers/firmware/efi/Makefile | 2 + drivers/firmware/efi/apple-properties.c | 219 ++++++++++++++++++++++++++++++++ drivers/firmware/efi/dev-path-parser.c | 186 +++++++++++++++++++++++++++ drivers/thunderbolt/Kconfig | 1 + drivers/thunderbolt/eeprom.c | 42 ++++++ drivers/thunderbolt/switch.c | 2 +- include/linux/acpi.h | 7 + include/linux/efi.h | 38 ++++++ 14 files changed, 574 insertions(+), 2 deletions(-) create mode 100644 drivers/firmware/efi/apple-properties.c create mode 100644 drivers/firmware/efi/dev-path-parser.c -- 2.8.1