/*
* linux/sound/cs42l56.h -- Platform data for CS42L56
*
* Copyright (c) 2014 Cirrus Logic Inc.
*
* 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 __CS42L56_H
#define __CS42L56_H
struct cs42l56_platform_data {
/* GPIO for Reset */
unsigned int gpio_nreset;
/* MICBIAS Level. Check datasheet Pg48 */
unsigned int micbias_lvl;
/* Analog Input 1A Reference 0=Single 1=Pseudo-Differential */
unsigned int ain1a_ref_cfg;
/* Analog Input 2A Reference 0=Single 1=Pseudo-Differential */
unsigned int ain2a_ref_cfg;
/* Analog Input 1B Reference 0=Single 1=Pseudo-Differential */
unsigned int ain1b_ref_cfg;
/* Analog Input 2B Reference 0=Single 1=Pseudo-Differential */
unsigned int ain2b_ref_cfg;
/* Charge Pump Freq. Check datasheet Pg62 */
unsigned int chgfreq;
/* HighPass Filter Right Channel Corner Frequency */
unsigned int hpfb_freq;
/* HighPass Filter Left Channel Corner Frequency */
unsigned int hpfa_freq;
/* Adaptive Power Control for LO/HP */
unsigned int adaptive_pwr;
};
#endif /* __CS42L56_H */
-remove' selected='selected'>nds-private-remove
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>