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/Linux-v5.15/Documentation/arm/
Dbooting.rst9 The following documentation is relevant to 2.4.18-rmk6 and beyond.
11 In order to boot ARM Linux, you require a boot loader, which is a small
12 program that runs before the main kernel. The boot loader is expected
16 Essentially, the boot loader should provide (as a minimum) the
28 ---------------------------
35 The boot loader is expected to find and initialise all RAM that the
39 the RAM in the machine, or any other method the boot loader designer
44 -----------------------------
51 The boot loader should initialise and enable one serial port on the
56 As an alternative, the boot loader can pass the relevant 'console='
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/Linux-v5.15/Documentation/x86/
Dboot.rst1 .. SPDX-License-Identifier: GPL-2.0
12 real-mode DOS as a mainstream operating system.
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
40 Protocol 2.05 (Kernel 2.6.20) Make protected mode kernel relocatable.
54 Protocol 2.09 (Kernel 2.6.26) Added a field of 64-bit physical
59 pref_address fields. Added extended boot loader IDs.
68 Protocol 2.13 (Kernel 3.14) Support 32- and 64-bit flags being set in
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/Linux-v5.15/security/tomoyo/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
13 This selects TOMOYO Linux, pathname-based access control.
19 int "Default maximal count for learning mode"
25 that are automatically appended into policy at "learning mode".
27 such programs in "learning mode" dulls the system response
43 bool "Activate without calling userspace policy loader."
47 Say Y here if you want to activate access control as soon as built-in
55 enforcing mode from the beginning, you can reduce the possibility of
59 string "Location of userspace policy loader"
60 default "/sbin/tomoyo-init"
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/Linux-v5.15/Documentation/devicetree/bindings/power/reset/
Dreboot-mode.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/reset/reboot-mode.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Generic reboot mode core map
10 - Andy Yan <andy.yan@rock-chips.com>
13 This driver get reboot mode arguments and call the write
18 All mode properties are vendor specific, it is a indication to tell
20 as mode-xxx = <magic> (xxx is mode name, magic should be a non-zero value).
23 - normal: Normal reboot mode, system reboot with command "reboot".
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Dsyscon-reboot-mode.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/power/reset/syscon-reboot-mode.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Generic SYSCON reboot mode driver
10 - Sebastian Reichel <sre@kernel.org>
13 This driver gets reboot mode magic value from reboot-mode driver
17 parental dt-node plus the offset. So the SYSCON reboot-mode node
18 should be represented as a sub-node of a "syscon", "simple-mfd" node.
22 const: syscon-reboot-mode
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/Linux-v5.15/drivers/hid/intel-ish-hid/
Dishtp-fw-loader.c1 // SPDX-License-Identifier: GPL-2.0
3 * ISH-TP client driver for ISH firmware loading
11 #include <linux/intel-ish-client-if.h>
23 * ISH Shim firmware loader reserves 4 Kb buffer in SRAM. The buffer is
25 * firmware loader. Reason for the odd size of 3968 bytes? Each IPC
33 * enum ish_loader_commands - ISH loader host commands.
34 * @LOADER_CMD_XFER_QUERY: Query the Shim firmware loader for
59 * Loader transfer modes:
61 * LOADER_XFER_MODE_ISHTP mode uses the existing ISH-TP mechanism to
63 * The buffer size is limited to 4 Kb by the IPC/ISH-TP protocol for
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/Linux-v5.15/arch/powerpc/platforms/cell/spufs/
Dinode.c1 // SPDX-License-Identifier: GPL-2.0-or-later
16 #include <linux/backing-dev.h>
43 return sb->s_fs_info; in spufs_get_sb_info()
55 ei->i_gang = NULL; in spufs_alloc_inode()
56 ei->i_ctx = NULL; in spufs_alloc_inode()
57 ei->i_openers = 0; in spufs_alloc_inode()
59 return &ei->vfs_inode; in spufs_alloc_inode()
72 inode_init_once(&ei->vfs_inode); in spufs_init_once()
76 spufs_new_inode(struct super_block *sb, umode_t mode) in spufs_new_inode() argument
84 inode->i_ino = get_next_ino(); in spufs_new_inode()
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Drun.c1 // SPDX-License-Identifier: GPL-2.0
14 /* interrupt-level stop callback function. */
17 struct spu_context *ctx = spu->ctx; in spufs_stop_callback()
30 ctx->csa.class_0_pending = spu->class_0_pending; in spufs_stop_callback()
31 ctx->csa.class_0_dar = spu->class_0_dar; in spufs_stop_callback()
34 ctx->csa.class_1_dsisr = spu->class_1_dsisr; in spufs_stop_callback()
35 ctx->csa.class_1_dar = spu->class_1_dar; in spufs_stop_callback()
45 wake_up_all(&ctx->stop_wq); in spufs_stop_callback()
58 *stat = ctx->ops->status_read(ctx); in spu_stopped()
62 * re-read the register to get the stopped value. in spu_stopped()
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/Linux-v5.15/Documentation/arm64/
Dbooting.rst13 (EL0 - EL3), with EL0 and EL1 having a secure and a non-secure
14 counterpart. EL2 is the hypervisor level and exists only in non-secure
15 mode. EL3 is the highest priority level and exists only in secure mode.
17 For the purposes of this document, we will use the term `boot loader`
23 Essentially, the boot loader should provide (as a minimum) the
33 ---------------------------
37 The boot loader is expected to find and initialise all RAM that the
41 the RAM in the machine, or any other method the boot loader designer
46 -------------------------
50 The device tree blob (dtb) must be placed on an 8-byte boundary and must
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/Linux-v5.15/drivers/net/wireless/intel/ipw2x00/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
34 rather than built-in (Y). This driver requires firmware at device
35 initialization time, and when built-in this typically happens
39 including the firmware and a firmware loader in an initramfs.
42 bool "Enable promiscuous mode"
45 Enables promiscuous/monitor mode support for the ipw2100 driver.
47 promiscuous mode via the Wireless Tool's Monitor mode. While in this
48 mode, no packets can be sent.
96 rather than built-in (Y). This driver requires firmware at device
97 initialization time, and when built-in this typically happens
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/Linux-v5.15/arch/riscv/
DMakefile2 # architecture-specific flags and dependencies. Remember to do have actions
11 OBJCOPYFLAGS := -O binary
14 LDFLAGS_vmlinux := --no-relax
15 KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY
16 CC_FLAGS_FTRACE := -fpatchable-function-entry=8
20 KBUILD_CFLAGS_MODULE += -mcmodel=medany
28 KBUILD_CFLAGS += -mabi=lp64
29 KBUILD_AFLAGS += -mabi=lp64
31 KBUILD_LDFLAGS += -melf64lriscv
36 KBUILD_CFLAGS += -mabi=ilp32
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/Linux-v5.15/arch/arm/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
133 The ARM series is a line of low-power-consumption RISC chip designs
135 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
136 manufactured, but legacy ARM-based PC hardware remains popular in
239 Patch phys-to-virt and virt-to-phys translation functions at
243 This can only be used with non-XIP MMU kernels where the base
288 bool "MMU-based Paged Memory Management Support"
291 Select if you want MMU-based virtualised addressing space
329 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
341 bool "EP93xx-based"
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/Linux-v5.15/drivers/scsi/qla2xxx/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
14 via the Firmware Loader interface.
17 ---------- -----------------
32 They are also included in the linux-firmware tree as well.
35 tristate "TCM_QLA2XXX fabric module for QLogic 24xx+ series target mode HBAs"
41 Say Y here to enable the TCM_QLA2XXX fabric module for QLogic 24xx+ series target mode HBAs
45 bool "TCM_QLA2XXX fabric module DEBUG mode for QLogic 24xx+ series target mode HBAs"
48 Say Y here to enable the TCM_QLA2XXX fabric module DEBUG for QLogic 24xx+ series target mode HBAs
/Linux-v5.15/drivers/tty/serial/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
19 comment "Non-8250 serial port support"
39 messages and warnings and which allows logins in single user mode).
45 your boot loader (lilo or loadlin) about how to pass options to the
67 messages and warnings and which allows logins in single user mode).
73 your boot loader (lilo or loadlin) about how to pass options to the
89 bool "Early console using RISC-V SBI"
95 Support for early debug console using RISC-V SBI. This enables
101 tristate "BCM1xxx on-chip DUART serial support"
107 the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that
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/Linux-v5.15/Documentation/sound/
Dalsa-configuration.rst2 Advanced Linux Sound Architecture - Driver Configuration guide
38 ----------
47 limiting card index for auto-loading (1-8);
49 For auto-loading more than one card, specify this option
50 together with snd-card-X aliases.
63 Module snd-pcm-oss
64 ------------------
86 regarding opening the device. When this option is non-zero,
90 Module snd-rawmidi
91 ------------------
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/Linux-v5.15/arch/arm/include/asm/
Dvirt.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
12 * Flag indicating that the kernel was not entered in the same mode on every
13 * CPU. The zImage loader stashes this value in an SPSR, so we need an
23 * __boot_cpu_mode records what mode the primary CPU was booted in.
24 * A correctly-implemented bootloader must start all CPUs in the same mode:
26 * that some CPU(s) were booted in a different mode.
50 /* Reports the availability of HYP mode */
/Linux-v5.15/arch/microblaze/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
55 big endian formats. Be sure to select the appropriate mode.
105 On some architectures there is currently no way for the boot loader
107 supply some command-line options at build time by entering them
116 override those passed by the boot loader.
175 If non-zero, a jump instruction to this address, will be written
/Linux-v5.15/arch/x86/boot/
Dheader.S1 /* SPDX-License-Identifier: GPL-2.0 */
12 * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment
28 BOOTSEG = 0x07C0 /* original address of boot-sector */
45 # "MZ", MS-DOS header
92 .ascii "Use a boot loader.\r\n"
115 .word section_table - optional_header # SizeOfOptionalHeader
179 .long (section_table - .) / 8 # NumberOfRvaAndSizes
211 # The EFI application loader requires a relocation section
272 .set section_count, (. - section_table) / 40
297 # tries to generate a 3-byte jump here, which causes
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/Linux-v5.15/arch/powerpc/boot/
Dmain.c1 // SPDX-License-Identifier: GPL-2.0-or-later
27 unsigned long vmlinuz_size = _vmlinux_end - _vmlinux_start; in prep_kernel()
35 /* assume uncompressed data if -1 is returned */ in prep_kernel()
36 if (len == -1) { in prep_kernel()
81 printf("Decompressing (0x%p <- 0x%p:0x%p)...\n\r", addr, in prep_kernel()
106 * supplied by the loader. */ in prep_initrd()
108 printf("Attached initrd image at 0x%p-0x%p\n\r", in prep_initrd()
111 initrd_size = _initrd_end - _initrd_start; in prep_initrd()
113 printf("Using loader supplied ramdisk at 0x%lx-0x%lx\n\r", in prep_initrd()
135 printf("Relocating initrd 0x%lx <- 0x%p (0x%lx bytes)\n\r", in prep_initrd()
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/Linux-v5.15/drivers/net/wireless/intel/iwlwifi/fw/
Dimg.h1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * Copyright (C) 2005-2014, 2018-2021 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
11 #include "api/dbg-tlv.h"
14 #include "error-dump.h"
65 return test_bit((__force long)api, capabilities->_api); in fw_has_api()
72 return test_bit((__force long)capa, capabilities->_capa); in fw_has_capa()
135 * struct iwl_fw_cscheme_list - a cipher scheme list
145 * enum iwl_fw_type - iwlwifi firmware type
155 * struct iwl_fw_dbg - debug data
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/Linux-v5.15/sound/pci/echoaudio/
Dechoaudio_dsp.c3 Copyright Echo Digital Audio Corporation (c) 1998 - 2004
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 MA 02111-1307, USA.
26 Translation from C++ and adaptation for use in ALSA-Driver
40 command and then write a non-zero value to the Handshake field in the
50 if (chip->comm_page->handshake) { in wait_handshake()
56 dev_err(chip->card->dev, "wait_handshake(): Timeout waiting for DSP\n"); in wait_handshake()
57 return -EBUSY; in wait_handshake()
83 dev_err(chip->card->dev, "timeout on send_vector\n"); in send_vector()
84 return -EBUSY; in send_vector()
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/Linux-v5.15/arch/x86/kernel/
Dkexec-bzimage64.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Kexec bzImage loader
10 #define pr_fmt(fmt) "kexec-bzImage64: " fmt
27 #include <asm/kexec-bzimage64.h>
29 #define MAX_ELFCOREHDR_STR_LEN 30 /* elfcorehdr=0x<64bit-value> */
33 * exactly these limits came from. Current bzimage64 loader in kexec-tools
43 * This is a place holder for all boot loader specific data structure which
58 params->hdr.ramdisk_image = initrd_load_addr & 0xffffffffUL; in setup_initrd()
59 params->hdr.ramdisk_size = initrd_len & 0xffffffffUL; in setup_initrd()
61 params->ext_ramdisk_image = initrd_load_addr >> 32; in setup_initrd()
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/Linux-v5.15/drivers/net/wireless/st/cw1200/
Dhwio.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Low-level API for mac80211 ST-Ericsson CW1200 drivers
5 * Copyright (c) 2010, ST-Ericsson
9 * ST-Ericsson UMAC CW1200 driver which is
10 * Copyright (c) 2010, ST-Ericsson
27 /* boot loader start address in SRAM */
35 #define DOWNLOAD_CTRL_DATA_DWORDS (32-6)
72 /* For boot loader detection */
99 /* WBF - SPI Register Addresses */
105 /* 16 bits, Q mode W/R */
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/Linux-v5.15/Documentation/userspace-api/
Dno_new_privs.rst5 The execve system call can grant a newly-started program privileges that
12 - The dynamic loader handles ``LD_*`` environment variables differently if
15 - chroot is disallowed to unprivileged processes, since it would allow
19 - The exec code has special handling for ptrace.
21 These are all ad-hoc fixes. The ``no_new_privs`` bit (since Linux 3.5) is a
37 in ``no_new_privs`` mode. (This means that setting up a general-purpose
39 interfere with LSM-based sandboxing.)
47 - Filters installed for the seccomp mode 2 sandbox persist across
48 execve and can change the behavior of newly-executed programs.
52 - By itself, ``no_new_privs`` can be used to reduce the attack surface
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/Linux-v5.15/kernel/
Dkmod.c2 * kmod - the kernel module loader
65 kfree(info->argv[3]); /* check call_modprobe() */ in free_modprobe_argv()
66 kfree(info->argv); in free_modprobe_argv()
88 argv[1] = "-q"; in call_modprobe()
89 argv[2] = "--"; in call_modprobe()
105 return -ENOMEM; in call_modprobe()
109 * __request_module - try to load a kernel module
114 * Load a module using the user mode module loader. The function returns
121 * If module auto-loading support is disabled then this function
122 * simply returns -ENOENT.
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