/* * wm8400.h -- audio driver for WM8400 * * Copyright 2008 Wolfson Microelectronics PLC. * Author: Mark Brown * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #ifndef _WM8400_CODEC_H #define _WM8400_CODEC_H #define WM8400_MCLK_DIV 0 #define WM8400_DACCLK_DIV 1 #define WM8400_ADCCLK_DIV 2 #define WM8400_BCLK_DIV 3 #define WM8400_MCLK_DIV_1 0x400 #define WM8400_MCLK_DIV_2 0x800 #define WM8400_DAC_CLKDIV_1 0x00 #define WM8400_DAC_CLKDIV_1_5 0x04 #define WM8400_DAC_CLKDIV_2 0x08 #define WM8400_DAC_CLKDIV_3 0x0c #define WM8400_DAC_CLKDIV_4 0x10 #define WM8400_DAC_CLKDIV_5_5 0x14 #define WM8400_DAC_CLKDIV_6 0x18 #define WM8400_ADC_CLKDIV_1 0x00 #define WM8400_ADC_CLKDIV_1_5 0x20 #define WM8400_ADC_CLKDIV_2 0x40 #define WM8400_ADC_CLKDIV_3 0x60 #define WM8400_ADC_CLKDIV_4 0x80 #define WM8400_ADC_CLKDIV_5_5 0xa0 #define WM8400_ADC_CLKDIV_6 0xc0 #define WM8400_BCLK_DIV_1 (0x0 << 1) #define WM8400_BCLK_DIV_1_5 (0x1 << 1) #define WM8400_BCLK_DIV_2 (0x2 << 1) #define WM8400_BCLK_DIV_3 (0x3 << 1) #define WM8400_BCLK_DIV_4 (0x4 << 1) #define WM8400_BCLK_DIV_5_5 (0x5 << 1) #define WM8400_BCLK_DIV_6 (0x6 << 1) #define WM8400_BCLK_DIV_8 (0x7 << 1) #define WM8400_BCLK_DIV_11 (0x8 << 1) #define WM8400_BCLK_DIV_12 (0x9 << 1) #define WM8400_BCLK_DIV_16 (0xA << 1) #define WM8400_BCLK_DIV_22 (0xB << 1) #define WM8400_BCLK_DIV_24 (0xC << 1) #define WM8400_BCLK_DIV_32 (0xD << 1) #define WM8400_BCLK_DIV_44 (0xE << 1) #define WM8400_BCLK_DIV_48 (0xF << 1) #endif 59cfc718d13a50fbc746ed9b415c25e92'>diff
path: root/tools/objtool/special.h
diff options
context:
space:
mode:
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 /tools/objtool/special.h
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 'tools/objtool/special.h')