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/linux/Documentation/power/
H A Dswsusp-dmcrypt.rst2 How to use dm-crypt and swsusp together
10 You know how dm-crypt works. If not, visit the following web page:
11 http://www.saout.de/misc/dm-crypt/
13 You did read Documentation/admin-guide/initrd.rst and know how an initrd works.
16 Now your system is properly set up, your disk is encrypted except for
17 the swap device(s) and the boot partition which may contain a mini
26 up dm-crypt and then asks swsusp to resume from the encrypted
29 The most important thing is that you set up dm-crypt in such
33 to always set up this swap device first with dmsetup, so that
36 brw------- 1 root root 254, 0 Jul 28 13:37 /dev/mapper/swap0
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/linux/arch/arm/mach-tegra/
H A Dplatsmp.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-tegra/platsmp.c
26 #include <asm/mach-types.h>
50 * power-gated via the flow controller). This will have no in tegra20_boot_secondary()
51 * effect on first boot of the CPU since it should already be in tegra20_boot_secondary()
58 * power-gate the CPU this will cause the flow controller to in tegra20_boot_secondary()
80 * The power up sequence of cold boot CPU and warm boot CPU in tegra30_boot_secondary()
83 * For warm boot CPU that was resumed from CPU hotplug, the in tegra30_boot_secondary()
84 * power will be resumed automatically after un-halting the in tegra30_boot_secondary()
85 * flow controller of the warm boot CPU. We need to wait for in tegra30_boot_secondary()
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/linux/scripts/package/
H A Dbuildtar2 # SPDX-License-Identifier: GPL-2.0
7 # (C) 2004-2006 by Jan-Benedict Glaw <jbglaw@lug-owl.de>
14 set -eu
22 # Clean-up and re-create the temporary directory
24 rm -rf -- "${tmpdir}"
25 mkdir -p -- "${tmpdir}/boot"
31 if grep -q '^CONFIG_OF_EARLY_FLATTREE=y' include/config/auto.conf; then
33 if [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then
34 …$MAKE ARCH="${ARCH}" -f ${srctree}/Makefile INSTALL_DTBS_PATH="${tmpdir}/boot/dtbs/${KERNELRELEASE…
42 make ARCH="${ARCH}" -f ${srctree}/Makefile INSTALL_MOD_PATH="${tmpdir}" modules_install
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/linux/arch/x86/kernel/
H A Dhead_64.S1 /* SPDX-License-Identifier: GPL-2.0 */
3 * linux/arch/x86/kernel/head_64.S -- start in 32bit and switch to 64bit
21 #include <asm/processor-flags.h>
25 #include <asm/nospec-branch.h>
33 * because we need identity-mapped pages.
51 * arch/x86/boot/compressed/head_64.S.
53 * We only come here initially at boot nothing else comes here.
61 /* Set up the stack for verify_cpu() */
65 * Set up GSBASE.
66 * Note that on SMP the boot CPU uses the init data section until
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/linux/arch/arm/mach-exynos/
H A Dplatsmp.c1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
5 // Cloned from linux/arch/arm/mach-vexpress/platsmp.c
17 #include <linux/soc/samsung/exynos-regs-pmu.h>
29 /* XXX exynos_pen_release is cargo culted code - DO NOT COPY XXX */
30 volatile int exynos_pen_release = -1;
70 * having been woken up - this shouldn't happen in platform_do_lowpower()
72 * Just note it happening - when we're woken, we can report in platform_do_lowpower()
81 * exynos_cpu_power_down() - power down the specified cpu
109 * exynos_cpu_power_up() - power up the specified cpu
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/linux/kernel/rcu/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 # RCU-related configuration options
11 # Dynticks-idle tracking
26 thousands of CPUs, but for which real-time response
37 designed for UP systems from which real-time response
42 bool "Make expert-level adjustments to RCU configuration"
46 expert-level adjustments to RCU configuration. By default,
47 no such adjustments can be made, which has the often-beneficial
48 side-effect of preventing "make oldconfig" from asking you all
50 obscure RCU options to be set up.
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/linux/arch/arm/kernel/
H A Dhyp-stub.S1 /* SPDX-License-Identifier: GPL-2.0-or-later */
7 #include <linux/irqchip/arm-gic-v3.h>
12 .arch armv7-a
16 * For the kernel proper, we need to find out the CPU boot mode long after
17 * boot, so we need to store it in a writable variable.
19 * This is not in .bss, because we set it sufficiently early that the boot-time
29 * Save the primary CPU boot mode. Requires 2 scratch registers.
46 cmp \mode, \reg1 @ matches primary CPU boot mode?
48 strne \reg1, [\reg2] @ record what happened and give up
57 * The zImage loader only runs on one CPU, so we don't bother with mult-CPU
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/linux/Documentation/scsi/
H A Dsym53c8xx_2.rst1 .. SPDX-License-Identifier: GPL-2.0
4 SYM-2 driver
11 95170 DEUIL LA BARRE - FRANCE
15 2004-10-09
38 10. Boot setup commands
54 10.4 SCSI BUS checking boot option
67 This driver supports the whole SYM53C8XX family of PCI-SCSI controllers.
68 It also support the subset of LSI53C10XX PCI-SCSI controllers that are based
72 with the FreeBSD SYM-2 driver. The 'glue' that allows this driver to work
81 - Wolfgang Stanglmeier <wolf@cologne.de>
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H A Dncr53c8xx.rst1 .. SPDX-License-Identifier: GPL-2.0
11 95170 DEUIL LA BARRE - FRANCE
38 10. Boot setup commands
57 10.2.17 Fix up PCI configuration space
63 10.3 Advised boot setup commands
64 10.4 PCI configuration fix-up boot option
65 10.5 Serial NVRAM support boot option
66 10.6 SCSI BUS checking boot option
67 10.7 IMMEDIATE ARBITRATION boot option
81 16.1 Synchronous timings for 53C875 and 53C860 Ultra-SCSI controllers
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H A DChangeLog.ncr53c8xx1 Sat May 12 12:00 2001 Gerard Roudier (groudier@club-internet.fr)
2 * version ncr53c8xx-3.4.3b
3 - Ensure LEDC bit in GPCNTL is cleared when reading the NVRAM.
4 Fix sent by Stig Telfer <stig@api-networks.com>.
5 - Define scsi_set_pci_device() as nil for kernel < 2.4.4.
7 Mon Feb 12 22:30 2001 Gerard Roudier (groudier@club-internet.fr)
8 * version ncr53c8xx-3.4.3
9 - Call pci_enable_device() as AC wants this to be done.
10 - Get both the BAR cookies actual and PCI BAR values.
12 - Merge changes for linux-2.4 that declare the host template
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/linux/Documentation/arch/x86/
H A Dboot.rst1 .. SPDX-License-Identifier: GPL-2.0
4 The Linux/x86 Boot Protocol
7 On the x86 platform, the Linux kernel uses a rather complicated boot
12 real-mode DOS as a mainstream operating system.
14 Currently, the following versions of the Linux/x86 boot protocol exist.
22 boot loader and the kernel. setup.S made relocatable,
28 Protocol 2.02 (Kernel 2.4.0-test3-pre3) New command line protocol.
31 safe for systems which use the EBDA from SMM or 32-bit
35 Protocol 2.03 (Kernel 2.4.18-pre1) Explicitly makes the highest possible
44 the boot command line.
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/linux/arch/arm/boot/dts/rockchip/
H A Drv1109-relfor-saib.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
7 /dts-v1/;
9 #include <dt-bindings/leds/common.h>
10 #include <dt-bindings/input/input.h>
16 gpio-keys {
17 compatible = "gpio-keys";
23 linux,input-type = <1>;
27 ir_receiver: ir-receiver {
28 compatible = "gpio-ir-receiver";
30 pinctrl-names = "default";
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/linux/arch/arm/boot/dts/nxp/imx/
H A Dimx53-usbarmory.dts1 // SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
10 /dts-v1/;
15 compatible = "inversepath,imx53-usbarmory", "fsl,imx53";
20 stdout-path = &uart1;
29 compatible = "gpio-leds";
30 pinctrl-names = "default";
31 pinctrl-0 = <&pinctrl_led>;
33 led-user {
36 linux,default-trigger = "heartbeat";
46 operating-points = <
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/linux/arch/s390/include/asm/
H A Dsections.h1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <asm-generic/sections.h>
8 * .boot.data section contains variables "shared" between the decompressor and
12 * Each variable end up in its own intermediate section .boot.data.<var name>,
14 * final .boot.data section, which should be identical in the decompressor and
17 #define __bootdata(var) __section(".boot.data." #var) var
20 * .boot.preserved.data is similar to .boot.data, but it is not part of the
24 #define __bootdata_preserved(var) __section(".boot.preserved.data." #var) var
/linux/Documentation/arch/powerpc/
H A Dkasan.txt1 KASAN is supported on powerpc on 32-bit and Radix 64-bit only.
6 KASAN is supported on both hash and nohash MMUs on 32-bit.
23 - It would be good to support inline instrumentation so as to be able to catch
26 - Inline instrumentation requires a fixed offset.
28 - Book3S runs code with translations off ("real mode") during boot, including a
29 lot of generic device-tree parsing code which is used to determine MMU
32 - Some code - most notably a lot of KVM code - also runs with translations off
33 after boot.
35 - Therefore any offset has to point to memory that is valid with
38 One approach is just to give up on inline instrumentation. This way boot-time
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/linux/Documentation/admin-guide/blockdev/
H A Dramdisk.rst14 -----------
18 in order to access the root filesystem (see Documentation/admin-guide/initrd.rst). It can
26 The RAM disk supports up to 16 RAM disks by default, and can be reconfigured
41 ---------------------------------
48 This parameter tells the RAM disk driver to set up RAM disks of N k size. The
63 ---------------
66 to set the boot device in a Linux kernel image.
68 Instead of using rdev, just place the boot device information on the
72 arch/x86/boot/Makefile and specify in initrd image by setting FDINITRD in
73 arch/x86/boot/Makefile.
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/linux/arch/arm/mach-mvebu/
H A Dplatsmp.c1 // SPDX-License-Identifier: GPL-2.0-only
9 * Gregory CLEMENT <gregory.clement@free-electrons.com>
10 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
14 * and waking up the secondary CPUs
26 #include "armada-370-xp.h"
60 * This is needed to wake up CPUs in the offline state after in armada_xp_boot_secondary()
67 * initial boot. in armada_xp_boot_secondary()
71 pr_warn("unable to boot CPU: %d\n", ret); in armada_xp_boot_secondary()
80 * because of the boot of a kexec'ed kernel, the PMSU configuration
130 * In order to boot the secondary CPUs we need to ensure in armada_xp_smp_prepare_cpus()
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/linux/sound/soc/sof/intel/
H A Dhda-loader.c1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
24 #include "../ipc4-priv.h"
26 #include "../sof-priv.h"
32 "(default = Y, use N to force buffer re-allocation)");
36 struct sof_intel_hda_dev *hda = sdev->pdat in hda_ssp_set_cbp_cfp()
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/linux/Documentation/admin-guide/
H A Dkernel-parameters.rst1 .. SPDX-License-Identifier: GPL-2.0
5 The kernel's command-line parameters
14 The kernel parses parameters from the kernel command line up to "``--``";
18 Everything after "``--``" is passed as an argument to init.
32 This document may not be entirely up to date and comprehensive. The command
33 "modinfo -p ${modulename}" shows a current list of all parameters of a loadable
37 ``echo -n ${value} > /sys/module/${modulename}/parameters/${parm}``.
40 ----------------
44 log_buf_len=1M print-fatal-signals=1
48 log-buf-len=1M print_fatal_signals=1
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/linux/Documentation/devicetree/bindings/mfd/
H A Drohm,bd71847-pmic.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mfd/rohm,bd71847-pmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Matti Vaittinen <mazziesaccount@gmail.com>
14 single-core, dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is
18 …/www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applica…
19 …//www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applic…
24 - rohm,bd71847
25 - rohm,bd71850
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/linux/mm/
H A DKconfig.debug1 # SPDX-License-Identifier: GPL-2.0-only
24 use-after-free). The error reports for these checks can be augmented
26 PAGE_OWNER is also selected and enabled on boot.
65 Boot with debugging on by default. SLUB boots by default with
67 equivalent to specifying the "slab_debug" parameter on boot.
71 "slab_debug=-".
86 detect use-after-free accesses in such caches.
116 "page_owner=on" to boot parameter in order to enable it. Eats
118 for user-space helper.
154 "page_poison=1" kernel boot option.
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/linux/scripts/
H A Dprune-kernel2 # SPDX-License-Identifier: GPL-2.0
5 # again, /boot and /lib/modules/ eventually fill up.
10 if rpm -qf "/lib/modules/$f" >/dev/null; then
12 elif [ $(uname -r) = "$f" ]; then
16 rm -f "/boot/initramfs-$f.img" "/boot/System.map-$f"
17 rm -f "/boot/vmlinuz-$f" "/boot/config-$f"
18 rm -rf "/lib/modules/$f"
19 if [ -x "$(command -v new-kernel-pkg)" ]; then
20 new-kernel-pkg --remove $f
21 elif [ -x "$(command -v kernel-install)" ]; then
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/linux/arch/parisc/include/asm/
H A Dpdc_chassis.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * include/asm-parisc/pdc_chassis.h
6 * Copyright (C) 2002 Thibaut Varene <varenet@parisc-linux.org>
8 * TODO: - handle processor number on SMP systems (Reporting Entity ID)
9 * - handle message ID
10 * - handle timestamps
18 * ----------
20 * ----------
28 * -----------------
30 * -----------------
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/linux/lib/
H A DKconfig.kgdb1 # SPDX-License-Identifier: GPL-2.0-only
49 Share a serial console with kgdb. Sysrq-g must be used
61 the tests. The most basic of this I/O module is to boot
62 a kernel boot arguments "kgdbwait kgdbts=V1F100"
65 bool "KGDB: Run tests on boot"
69 Run the kgdb tests on boot up automaticall
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/linux/arch/arm64/boot/dts/qcom/
H A Dmsm8994-sony-xperia-kitakami.dtsi1 // SPDX-License-Identifier: BSD-3-Clause
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/input/gpio-keys.h>
18 * and requires driver-side changes (including CPR, be warned!!).
21 qcom,msm-id = <207 0x20000>, <207 0x20001>;
23 qcom,pmic-id = <0x10009 0x1000a 0x00 0x00>;
25 qcom,board-id = <8 0>;
28 /delete-node/ psci;
30 gpio-keys {
31 compatible = "gpio-keys";
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