/* * This header provides constants for DRA pinctrl bindings. * * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ * Author: Rajendra Nayak * * 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 _DT_BINDINGS_PINCTRL_DRA_H #define _DT_BINDINGS_PINCTRL_DRA_H /* DRA7 mux mode options for each pin. See TRM for options */ #define MUX_MODE0 0x0 #define MUX_MODE1 0x1 #define MUX_MODE2 0x2 #define MUX_MODE3 0x3 #define MUX_MODE4 0x4 #define MUX_MODE5 0x5 #define MUX_MODE6 0x6 #define MUX_MODE7 0x7 #define MUX_MODE8 0x8 #define MUX_MODE9 0x9 #define MUX_MODE10 0xa #define MUX_MODE11 0xb #define MUX_MODE12 0xc #define MUX_MODE13 0xd #define MUX_MODE14 0xe #define MUX_MODE15 0xf /* Certain pins need virtual mode, but note: they may glitch */ #define MUX_VIRTUAL_MODE0 (MODE_SELECT | (0x0 << 4)) #define MUX_VIRTUAL_MODE1 (MODE_SELECT | (0x1 << 4)) #define MUX_VIRTUAL_MODE2 (MODE_SELECT | (0x2 << 4)) #define MUX_VIRTUAL_MODE3 (MODE_SELECT | (0x3 << 4)) #define MUX_VIRTUAL_MODE4 (MODE_SELECT | (0x4 << 4)) #define MUX_VIRTUAL_MODE5 (MODE_SELECT | (0x5 << 4)) #define MUX_VIRTUAL_MODE6 (MODE_SELECT | (0x6 << 4)) #define MUX_VIRTUAL_MODE7 (MODE_SELECT | (0x7 << 4)) #define MUX_VIRTUAL_MODE8 (MODE_SELECT | (0x8 << 4)) #define MUX_VIRTUAL_MODE9 (MODE_SELECT | (0x9 << 4)) #define MUX_VIRTUAL_MODE10 (MODE_SELECT | (0xa << 4)) #define MUX_VIRTUAL_MODE11 (MODE_SELECT | (0xb << 4)) #define MUX_VIRTUAL_MODE12 (MODE_SELECT | (0xc << 4)) #define MUX_VIRTUAL_MODE13 (MODE_SELECT | (0xd << 4)) #define MUX_VIRTUAL_MODE14 (MODE_SELECT | (0xe << 4)) #define MUX_VIRTUAL_MODE15 (MODE_SELECT | (0xf << 4)) #define MODE_SELECT (1 << 8) #define PULL_ENA (0 << 16) #define PULL_DIS (1 << 16) #define PULL_UP (1 << 17) #define INPUT_EN (1 << 18) #define SLEWCONTROL (1 << 19) #define WAKEUP_EN (1 << 24) #define WAKEUP_EVENT (1 << 25) /* Active pin states */ #define PIN_OUTPUT (0 | PULL_DIS) #define PIN_OUTPUT_PULLUP (PULL_UP) #define PIN_OUTPUT_PULLDOWN (0) #define PIN_INPUT (INPUT_EN | PULL_DIS) #define PIN_INPUT_SLEW (INPUT_EN | SLEWCONTROL) #define PIN_INPUT_PULLUP (PULL_ENA | INPUT_EN | PULL_UP) #define PIN_INPUT_PULLDOWN (PULL_ENA | INPUT_EN) /* * Macro to allow using the absolute physical address instead of the * padconf registers instead of the offset from padconf base. */ #define DRA7XX_CORE_IOPAD(pa, val) (((pa) & 0xffff) - 0x3400) (val) #endif '10' name='q' value=''/>
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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 /net/batman-adv/send.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 'net/batman-adv/send.c')