/* * Copyright 2005 Openedhand Ltd. * * Author: Richard Purdie * * Based on WM8753.h * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * */ #ifndef _WM8750_H #define _WM8750_H /* WM8750 register space */ #define WM8750_LINVOL 0x00 #define WM8750_RINVOL 0x01 #define WM8750_LOUT1V 0x02 #define WM8750_ROUT1V 0x03 #define WM8750_ADCDAC 0x05 #define WM8750_IFACE 0x07 #define WM8750_SRATE 0x08 #define WM8750_LDAC 0x0a #define WM8750_RDAC 0x0b #define WM8750_BASS 0x0c #define WM8750_TREBLE 0x0d #define WM8750_RESET 0x0f #define WM8750_3D 0x10 #define WM8750_ALC1 0x11 #define WM8750_ALC2 0x12 #define WM8750_ALC3 0x13 #define WM8750_NGATE 0x14 #define WM8750_LADC 0x15 #define WM8750_RADC 0x16 #define WM8750_ADCTL1 0x17 #define WM8750_ADCTL2 0x18 #define WM8750_PWR1 0x19 #define WM8750_PWR2 0x1a #define WM8750_ADCTL3 0x1b #define WM8750_ADCIN 0x1f #define WM8750_LADCIN 0x20 #define WM8750_RADCIN 0x21 #define WM8750_LOUTM1 0x22 #define WM8750_LOUTM2 0x23 #define WM8750_ROUTM1 0x24 #define WM8750_ROUTM2 0x25 #define WM8750_MOUTM1 0x26 #define WM8750_MOUTM2 0x27 #define WM8750_LOUT2V 0x28 #define WM8750_ROUT2V 0x29 #define WM8750_MOUTV 0x2a #define WM8750_CACHE_REGNUM 0x2a #define WM8750_SYSCLK 0 #endif ble>
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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-02-01 17:45:02 +0000
committerIngo Molnar <mingo@kernel.org>2017-02-01 21:17:49 +0100
commitc8f325a59cfc718d13a50fbc746ed9b415c25e92 (patch)
treed53fbdac9d0781e39a13b2ac6b2bd258cf3b4140 /drivers/usb/host/fhci-tds.c
parentbf29bddf0417a4783da3b24e8c9e017ac649326f (diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/host/fhci-tds.c')