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/* include/net/ax88796.h
 *
 * Copyright 2005 Simtec Electronics
 *	Ben Dooks <ben@simtec.co.uk>
 *
 * 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 __NET_AX88796_PLAT_H
#define __NET_AX88796_PLAT_H

#define AXFLG_HAS_EEPROM		(1<<0)
#define AXFLG_MAC_FROMDEV		(1<<1)	/* device already has MAC */
#define AXFLG_HAS_93CX6			(1<<2)	/* use eeprom_93cx6 driver */
#define AXFLG_MAC_FROMPLATFORM		(1<<3)	/* MAC given by platform data */

struct ax_plat_data {
	unsigned int	 flags;
	unsigned char	 wordlength;	/* 1 or 2 */
	unsigned char	 dcr_val;	/* default value for DCR */
	unsigned char	 rcr_val;	/* default value for RCR */
	unsigned char	 gpoc_val;	/* default value for GPOC */
	u32		*reg_offsets;	/* register offsets */
	u8		*mac_addr;	/* MAC addr (only used when
					   AXFLG_MAC_FROMPLATFORM is used */
};

#endif /* __NET_AX88796_PLAT_H */
-next.git/commit/include/crypto/aead.h?h=nds-private-remove&id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>bf29bddf0417a4783da3b24e8c9e017ac649326f (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 'include/crypto/aead.h')