/* linux/include/asm-arm/plat-s3c24xx/regs-s3c2412-iis.h * * Copyright 2007 Simtec Electronics * http://armlinux.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. * * S3C2412 IIS register definition */ #ifndef __ASM_ARCH_REGS_S3C2412_IIS_H #define __ASM_ARCH_REGS_S3C2412_IIS_H #define S3C2412_IISCON (0x00) #define S3C2412_IISMOD (0x04) #define S3C2412_IISFIC (0x08) #define S3C2412_IISPSR (0x0C) #define S3C2412_IISTXD (0x10) #define S3C2412_IISRXD (0x14) #define S5PC1XX_IISFICS 0x18 #define S5PC1XX_IISTXDS 0x1C #define S5PC1XX_IISCON_SW_RST (1 << 31) #define S5PC1XX_IISCON_FRXOFSTATUS (1 << 26) #define S5PC1XX_IISCON_FRXORINTEN (1 << 25) #define S5PC1XX_IISCON_FTXSURSTAT (1 << 24) #define S5PC1XX_IISCON_FTXSURINTEN (1 << 23) #define S5PC1XX_IISCON_TXSDMAPAUSE (1 << 20) #define S5PC1XX_IISCON_TXSDMACTIVE (1 << 18) #define S3C64XX_IISCON_FTXURSTATUS (1 << 17) #define S3C64XX_IISCON_FTXURINTEN (1 << 16) #define S3C64XX_IISCON_TXFIFO2_EMPTY (1 << 15) #define S3C64XX_IISCON_TXFIFO1_EMPTY (1 << 14) #define S3C64XX_IISCON_TXFIFO2_FULL (1 << 13) #define S3C64XX_IISCON_TXFIFO1_FULL (1 << 12) #define S3C2412_IISCON_LRINDEX (1 << 11) #define S3C2412_IISCON_TXFIFO_EMPTY (1 << 10) #define S3C2412_IISCON_RXFIFO_EMPTY (1 << 9) #define S3C2412_IISCON_TXFIFO_FULL (1 << 8) #define S3C2412_IISCON_RXFIFO_FULL (1 << 7) #define S3C2412_IISCON_TXDMA_PAUSE (1 << 6) #define S3C2412_IISCON_RXDMA_PAUSE (1 << 5) #define S3C2412_IISCON_TXCH_PAUSE (1 << 4) #define S3C2412_IISCON_RXCH_PAUSE (1 << 3) #define S3C2412_IISCON_TXDMA_ACTIVE (1 << 2) #define S3C2412_IISCON_RXDMA_ACTIVE (1 << 1) #define S3C2412_IISCON_IIS_ACTIVE (1 << 0) #define S5PC1XX_IISMOD_OPCLK_CDCLK_OUT (0 << 30) #define S5PC1XX_IISMOD_OPCLK_CDCLK_IN (1 << 30) #define S5PC1XX_IISMOD_OPCLK_BCLK_OUT (2 << 30) #define S5PC1XX_IISMOD_OPCLK_PCLK (3 << 30) #define S5PC1XX_IISMOD_OPCLK_MASK (3 << 30) #define S5PC1XX_IISMOD_TXS_IDMA (1 << 28) /* Sec_TXFIFO use I-DMA */ #define S5PC1XX_IISMOD_BLCS_MASK 0x3 #define S5PC1XX_IISMOD_BLCS_SHIFT 26 #define S5PC1XX_IISMOD_BLCP_MASK 0x3 #define S5PC1XX_IISMOD_BLCP_SHIFT 24 #define S3C64XX_IISMOD_C2DD_HHALF (1 << 21) /* Discard Higher-half */ #define S3C64XX_IISMOD_C2DD_LHALF (1 << 20) /* Discard Lower-half */ #define S3C64XX_IISMOD_C1DD_HHALF (1 << 19) #define S3C64XX_IISMOD_C1DD_LHALF (1 << 18) #define S3C64XX_IISMOD_DC2_EN (1 << 17) #define S3C64XX_IISMOD_DC1_EN (1 << 16) #define S3C64XX_IISMOD_BLC_16BIT (0 << 13) #define S3C64XX_IISMOD_BLC_8BIT (1 << 13) #define S3C64XX_IISMOD_BLC_24BIT (2 << 13) #define S3C64XX_IISMOD_BLC_MASK (3 << 13) #define S3C2412_IISMOD_IMS_SYSMUX (1 << 10) #define S3C2412_IISMOD_SLAVE (1 << 11) #define S3C2412_IISMOD_MODE_TXONLY (0 << 8) #define S3C2412_IISMOD_MODE_RXONLY (1 << 8) #define S3C2412_IISMOD_MODE_TXRX (2 << 8) #define S3C2412_IISMOD_MODE_MASK (3 << 8) #define S3C2412_IISMOD_LR_LLOW (0 << 7) #define S3C2412_IISMOD_LR_RLOW (1 << 7) #define S3C2412_IISMOD_SDF_IIS (0 << 5) #define S3C2412_IISMOD_SDF_MSB (1 << 5) #define S3C2412_IISMOD_SDF_LSB (2 << 5) #define S3C2412_IISMOD_SDF_MASK (3 << 5) #define S3C2412_IISMOD_RCLK_256FS (0 << 3) #define S3C2412_IISMOD_RCLK_512FS (1 << 3) #define S3C2412_IISMOD_RCLK_384FS (2 << 3) #define S3C2412_IISMOD_RCLK_768FS (3 << 3) #define S3C2412_IISMOD_RCLK_MASK (3 << 3) #define S3C2412_IISMOD_BCLK_32FS (0 << 1) #define S3C2412_IISMOD_BCLK_48FS (1 << 1) #define S3C2412_IISMOD_BCLK_16FS (2 << 1) #define S3C2412_IISMOD_BCLK_24FS (3 << 1) #define S3C2412_IISMOD_BCLK_MASK (3 << 1) #define S3C2412_IISMOD_8BIT (1 << 0) #define S3C64XX_IISMOD_CDCLKCON (1 << 12) #define S3C2412_IISPSR_PSREN (1 << 15) #define S3C64XX_IISFIC_TX2COUNT(x) (((x) >> 24) & 0xf) #define S3C64XX_IISFIC_TX1COUNT(x) (((x) >> 16) & 0xf) #define S3C2412_IISFIC_TXFLUSH (1 << 15) #define S3C2412_IISFIC_RXFLUSH (1 << 7) #define S3C2412_IISFIC_TXCOUNT(x) (((x) >> 8) & 0xf) #define S3C2412_IISFIC_RXCOUNT(x) (((x) >> 0) & 0xf) #define S5PC1XX_IISFICS_TXFLUSH (1 << 15) #define S5PC1XX_IISFICS_TXCOUNT(x) (((x) >> 8) & 0x7f) #endif /* __ASM_ARCH_REGS_S3C2412_IIS_H */ n value='1'>ssdiff
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/bluetooth/rfcomm
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/bluetooth/rfcomm')