| /Linux-v6.6/arch/powerpc/ |
| D | Kconfig.debug | 103 The cmdline option 'xmon' or 'xmon=early' will drop into xmon
104 very early during boot. 'xmon=on' will just enable the xmon
148 bool "Support for early boot text console (BootX or OpenFirmware only)"
155 bool "Early debugging (dangerous)"
157 Say Y to enable some early debugging facilities that may be available
159 intended to debug problems early during boot, this should not be
162 to be pushed to max automatically very early during boot
165 prompt "Early debugging console"
168 Use the selected console for early debugging. Careful, if you
176 Select this to enable early debugging for a machine using BootX
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| /Linux-v6.6/arch/loongarch/mm/ |
| D | kasan_init.c | 17 #define __p4d_none(early, p4d) (0) argument
19 #define __p4d_none(early, p4d) (early ? (p4d_val(p4d) == 0) : \ argument
24 #define __pud_none(early, pud) (0) argument
26 #define __pud_none(early, pud) (early ? (pud_val(pud) == 0) : \ argument
30 #define __pmd_none(early, pmd) (early ? (pmd_val(pmd) == 0) : \ argument
33 #define __pte_none(early, pte) (early ? pte_none(pte) : \ argument
103 static pte_t *__init kasan_pte_offset(pmd_t *pmdp, unsigned long addr, int node, bool early) in kasan_pte_offset() argument
105 if (__pmd_none(early, READ_ONCE(*pmdp))) { in kasan_pte_offset()
106 phys_addr_t pte_phys = early ? in kasan_pte_offset()
108 if (!early) in kasan_pte_offset()
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| /Linux-v6.6/arch/arm64/mm/ |
| D | kasan_init.c | 30 * directly on kernel symbols (bm_p*d). All the early functions are called too
31 * early to use lm_alias so __p*d_populate functions must be used to populate
63 bool early) in kasan_pte_offset() argument
66 phys_addr_t pte_phys = early ? in kasan_pte_offset()
72 return early ? pte_offset_kimg(pmdp, addr) in kasan_pte_offset()
77 bool early) in kasan_pmd_offset() argument
80 phys_addr_t pmd_phys = early ? in kasan_pmd_offset()
86 return early ? pmd_offset_kimg(pudp, addr) : pmd_offset(pudp, addr); in kasan_pmd_offset()
90 bool early) in kasan_pud_offset() argument
93 phys_addr_t pud_phys = early ? in kasan_pud_offset()
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| /Linux-v6.6/arch/sh/drivers/ |
| D | platform_early.c | 61 * sh_early_platform_driver_register - register early platform driver
117 * sh_early_platform_add_devices - adds a number of early platform devices
118 * @devs: array of early platform devices to add
119 * @num: number of early platform devices in array
121 * Used by early architecture code to register early platform devices and
143 * sh_early_platform_driver_register_all - register early platform drivers
144 * @class_str: string to identify early platform driver class
146 * Used by architecture code to register all early platform drivers
147 * for a certain class. If omitted then only early platform drivers
156 * Since we register our early platform drivers using early_param() in sh_early_platform_driver_register_all()
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| /Linux-v6.6/Documentation/driver-api/driver-model/ |
| D | platform.rst | 177 early during system boot.
189 Early Platform Devices and Drivers
191 The early platform interfaces provide platform data to platform device
192 drivers early on during the system boot. The code is built on top of the
193 early_param() command line parsing and can be executed very early on.
195 Example: "earlyprintk" class early serial console in 6 steps
197 1. Registering early platform device data
200 early_platform_add_devices(). In the case of early serial console this
202 at this point will later on be matched against early platform drivers.
208 User specified early platform devices will be registered at this point.
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| /Linux-v6.6/arch/arm/mm/ |
| D | kasan_init.c | 38 unsigned long end, bool early) in kasan_pte_populate() argument
49 if (!early) { in kasan_pte_populate()
64 * The early shadow memory is mapping all KASan in kasan_pte_populate()
74 * Early shadow mappings are PMD_SIZE aligned, so if the in kasan_pte_populate()
88 unsigned long end, bool early) in kasan_pmd_populate() argument
100 void *p = early ? kasan_early_shadow_pte : in kasan_pmd_populate()
113 kasan_pte_populate(pmdp, addr, next, early); in kasan_pmd_populate()
118 bool early) in kasan_pgd_populate() argument
132 if (!early && pgd_none(*pgdp)) { in kasan_pgd_populate()
152 kasan_pmd_populate(pudp, addr, next, early); in kasan_pgd_populate()
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| /Linux-v6.6/arch/arm/include/asm/ |
| D | glue-df.h | 19 * v4_early - ARMv4 without Thumb early abort handler
21 * v4t_early - ARMv4 with Thumb early abort handler
22 * v5t_early - ARMv5 with Thumb early abort handler
23 * v5tj_early - ARMv5 with Thumb and Java early abort handler
25 * v6_early - ARMv6 generic early abort handler
26 * v7_early - ARMv7 generic early abort handler
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| /Linux-v6.6/arch/x86/kernel/cpu/microcode/ |
| D | amd.c | 16 * early loader:
124 * of @buf of size @buf_size. Set @early to use this function in the early path.
126 static bool verify_container(const u8 *buf, size_t buf_size, bool early) in verify_container() argument
131 if (!early) in verify_container()
139 if (!early) in verify_container()
150 * beginning of @buf of size @buf_size. Set @early to use this function in the
151 * early path.
153 static bool verify_equivalence_table(const u8 *buf, size_t buf_size, bool early) in verify_equivalence_table() argument
158 if (!verify_container(buf, buf_size, early)) in verify_equivalence_table()
163 if (!early) in verify_equivalence_table()
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| /Linux-v6.6/Documentation/driver-api/early-userspace/ |
| D | early_userspace_support.rst | 2 Early userspace support
8 "Early userspace" is a set of libraries and programs that provide
25 two ways to add an early userspace image: specify an existing cpio
32 You can create a cpio archive that contains the early userspace image.
41 The kernel build process can also build an early userspace image from
68 early userspace image can be built by an unprivileged user.
88 early userspace useful. The klibc distribution is currently
111 move to early userspace:
124 For questions and help, you can sign up for the early userspace
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| /Linux-v6.6/Documentation/core-api/ |
| D | debugging-via-ohci1394.rst | 34 Together with a early initialization of the OHCI-1394 controller for debugging,
36 buffer on to debug early boot problems in areas like ACPI where the system
48 completed, an initialization routine which runs pretty early has been
53 Remote debugging over FireWire early on boot) and pass the parameter
54 "ohci1394_dma=early" to the recompiled kernel on boot.
89 Step-by-step instructions for using firescope with early OHCI initialization:
147 4) Prepare for debugging with early OHCI-1394 initialization:
152 (Kernel hacking: Provide code for enabling DMA over FireWire early on boot)
164 CONFIG_PROVIDE_OHCI1394_DMA_INIT enabled, with the option ohci1394_dma=early.
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| /Linux-v6.6/arch/mips/ |
| D | Kconfig.debug | 4 bool "Early printk" if EXPERT
9 to print messages very early in the bootup process.
12 early before the console code is initialized. For normal operation,
22 "8250/16550 and compatible serial early printk driver"
131 occur early in the boot process of a secondary core.
144 debug information from the early stages of core startup.
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| /Linux-v6.6/drivers/firewire/ |
| D | init_ohci1394_dma.c | 7 * Derived from drivers/ieee1394/ohci1394.c and arch/x86/kernel/early-quirks.c
9 * - scan the PCI very early on boot for all OHCI 1394-compliant controllers
175 * to polling here because on early boot, we have no interrupts.
227 /* We had to wait and do this now if we want to debug early problems */ in init_ohci1394_reset_and_init_dma()
265 /* Poor man's PCI discovery, the only thing we can do at early boot */ in init_ohci1394_dma_on_all_controllers()
286 * setup_ohci1394_dma - enables early OHCI1394 DMA initialization
290 if (!strcmp(opt, "early")) in setup_ohci1394_dma()
295 /* passing ohci1394_dma=early on boot causes early OHCI1394 DMA initialization */
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| /Linux-v6.6/arch/nios2/ |
| D | Kconfig.debug | 4 bool "Activate early kernel debugging"
9 Enable early printk on console.
11 early before the console code is initialized.
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| /Linux-v6.6/arch/x86/ |
| D | Kconfig.debug | 15 bool "Early printk" if EXPERT
22 early before the console code is initialized. For normal operation
28 bool "Early printk via EHCI debug port"
35 early before the console code is initialized. For normal operation
41 bool "Early printk via the xHCI debug port"
48 machine crashes very early before the regular console code is
56 You should normally say N here, unless you want to debug early
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| /Linux-v6.6/Documentation/riscv/ |
| D | boot.rst | 12 touching the early boot process. For the purposes of this document, the
13 ``early boot process`` refers to any code that runs before the final virtual
69 wins a lottery and executes the early boot code while the other harts are
105 Early Boot Requirements and Constraints
108 The RISC-V kernel's early boot process operates under the following constraints:
156 patching of early alternatives and the early parsing of the kernel command line.
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| /Linux-v6.6/tools/testing/memblock/linux/ |
| D | init.h | 20 int early; member
23 #define __setup_param(str, unique_id, fn, early) \ argument
29 { __setup_str_##unique_id, fn, early }
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| /Linux-v6.6/drivers/tty/ |
| D | Kconfig | 270 bool "Early console (udbg) support for ePAPR hypervisors"
273 Select this option to enable early console (a.k.a. "udbg") support
278 int "Byte channel handle for early console (udbg)"
282 If you want early console (udbg) output through a byte channel,
288 Note that only one early console driver can be enabled, so don't
292 there simply will be no early console output. This is true also
353 bool "Early FDC console"
356 This registers a console on FDC channel 1 very early during boot (from
357 MIPS arch code). This is useful for bring-up and debugging early boot
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| /Linux-v6.6/arch/powerpc/mm/kasan/ |
| D | init_book3s_64.c | 11 * outline mode to avoid invalid access early in boot.
49 * 3) Map the 'early shadow'/zero page over iomap and vmemmap space. in kasan_init()
79 /* map the early shadow over the iomap and vmemmap space */ in kasan_init()
82 /* mark early shadow region as RO and wipe it */ in kasan_init()
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| /Linux-v6.6/arch/powerpc/kernel/ |
| D | isa-bridge.c | 106 * isa_bridge_find_early - Find and map the ISA IO space early before
108 * the arch code when adding PCI PHBs to get early
148 pr_debug("ISA bridge (early) is %pOF\n", np); in isa_bridge_find_early()
152 * isa_bridge_find_early - Find and map the ISA IO space early before
154 * the arch code when adding PCI PHBs to get early
238 /* Check if we have an early ISA device, without PCI dev */ in isa_bridge_notify()
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| /Linux-v6.6/Documentation/mm/ |
| D | hwpoison.rst | 62 early kill
81 Enable early kill mode globally
84 Set early/late kill mode/revert to system default
92 Early kill
116 some early filtering to avoid corrupted unintended pages in test suites.
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| /Linux-v6.6/Documentation/process/ |
| D | 3.Early-stage.rst | 3 Early-stage planning
9 line of code is written. Some time spent in early planning and
71 Early discussion
75 discussions with the community before launching into implementation. Early
122 avoided with some early discussion with the kernel developers.
170 If possible, posting your plans during the early stages can only be
211 disclose its plans early in the development process. Companies with
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| /Linux-v6.6/arch/x86/kernel/ |
| D | idt.c | 59 * Early traps running on the DEFAULT_STACK because the other interrupt
209 * idt_setup_early_traps - Initialize the idt table with early traps
232 * Early traps running on the DEFAULT_STACK because the other interrupt
240 * idt_setup_early_pf - Initialize the idt table with early pagefault handler
248 * handler from the early_idt_handler_array to initialize the early page
308 * idt_setup_early_handler - Initializes the idt table with early handlers
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| /Linux-v6.6/arch/arm/mach-mvebu/ |
| D | coherency_ll.S | 11 * CPUs during their early boot in an SMP kernel, this why this
84 * calls. This function is used very early in the secondary
109 * calls. This function is used very early in the secondary
136 * calls. This function is used very early in the secondary
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| /Linux-v6.6/drivers/firmware/efi/ |
| D | memmap.c | 115 * setup and is therefore not suitable for calling during early EFI
121 * early EFI memmap should be explicitly unmapped once EFI
139 /* Did we forget to unmap the early EFI memmap? */ in efi_memmap_init_late()
148 * existing early EFI memmap. in efi_memmap_init_late()
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| /Linux-v6.6/drivers/net/wireless/intel/iwlwifi/ |
| D | iwl-context-info.h | 17 * @IWL_CTXT_INFO_EARLY_DEBUG: enable early debug
137 * struct iwl_context_info_early_dbg_cfg - early debug configuration for
139 * @early_debug_addr: early debug start address
155 * @edbg_cfg: early debug configuration
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