| /kernel/linux/linux-5.10/arch/powerpc/ |
| D | Kconfig.debug | 97 The cmdline option 'xmon' or 'xmon=early' will drop into xmon
98 very early during boot. 'xmon=on' will just enable the xmon
142 bool "Support for early boot text console (BootX or OpenFirmware only)"
149 bool "Early debugging (dangerous)"
151 Say Y to enable some early debugging facilities that may be available
153 intended to debug problems early during boot, this should not be
156 to be pushed to max automatically very early during boot
159 prompt "Early debugging console"
162 Use the selected console for early debugging. Careful, if you
170 Select this to enable early debugging for a machine using BootX
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| /kernel/linux/linux-5.10/arch/arm64/mm/ |
| D | kasan_init.c | 28 * directly on kernel symbols (bm_p*d). All the early functions are called too
29 * early to use lm_alias so __p*d_populate functions must be used to populate
60 bool early) in kasan_pte_offset() argument
63 phys_addr_t pte_phys = early ? in kasan_pte_offset()
69 return early ? pte_offset_kimg(pmdp, addr) in kasan_pte_offset()
74 bool early) in kasan_pmd_offset() argument
77 phys_addr_t pmd_phys = early ? in kasan_pmd_offset()
83 return early ? pmd_offset_kimg(pudp, addr) : pmd_offset(pudp, addr); in kasan_pmd_offset()
87 bool early) in kasan_pud_offset() argument
90 phys_addr_t pud_phys = early ? in kasan_pud_offset()
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| /kernel/linux/linux-5.10/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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| /kernel/linux/linux-5.10/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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| /kernel/linux/linux-5.10/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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| /kernel/linux/linux-5.10/arch/arm/mm/ |
| D | kasan_init.c | 39 unsigned long end, bool early) in kasan_pte_populate() argument
50 if (!early) { in kasan_pte_populate()
65 * The early shadow memory is mapping all KASan in kasan_pte_populate()
75 * Early shadow mappings are PMD_SIZE aligned, so if the in kasan_pte_populate()
89 unsigned long end, bool early) in kasan_pmd_populate() argument
101 void *p = early ? kasan_early_shadow_pte : in kasan_pmd_populate()
114 kasan_pte_populate(pmdp, addr, next, early); in kasan_pmd_populate()
119 bool early) in kasan_pgd_populate() argument
133 if (!early && pgd_none(*pgdp)) { in kasan_pgd_populate()
153 kasan_pmd_populate(pudp, addr, next, early); in kasan_pgd_populate()
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| /kernel/linux/linux-5.10/arch/x86/kernel/cpu/microcode/ |
| D | amd.c | 16 * early loader:
87 * of @buf of size @buf_size. Set @early to use this function in the early path.
89 static bool verify_container(const u8 *buf, size_t buf_size, bool early) in verify_container() argument
94 if (!early) in verify_container()
102 if (!early) in verify_container()
113 * beginning of @buf of size @buf_size. Set @early to use this function in the
114 * early path.
116 static bool verify_equivalence_table(const u8 *buf, size_t buf_size, bool early) in verify_equivalence_table() argument
121 if (!verify_container(buf, buf_size, early)) in verify_equivalence_table()
126 if (!early) in verify_equivalence_table()
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| /kernel/linux/linux-5.10/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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| /kernel/linux/linux-5.10/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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| /kernel/linux/linux-5.10/arch/mips/ |
| D | Kconfig.debug | 8 bool "Early printk" if EXPERT
13 to print messages very early in the bootup process.
16 early before the console code is initialized. For normal operation,
26 "8250/16550 and compatible serial early printk driver"
126 occur early in the boot process of a secondary core.
139 debug information from the early stages of core startup.
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| /kernel/linux/linux-5.10/drivers/cpuidle/governors/ |
| D | teo.c | 39 * o Otherwise, select the shallower state with the greatest matched "early"
69 * @early_hits: "Early" CPU wakeups "matching" this state.
79 * Also, from the TEO governor perspective, a CPU wakeup from idle is "early" if
81 * is, early enough to match an idle state shallower than the one matching the
154 * Decay the "early hits" metric for all of the states and find the in teo_update()
174 * also increase the "early hits" metric for the state that actually in teo_update()
296 * the maximum "early hits" metric so far, the "early in teo_select()
298 * current "early hits" count to avoid selecting a in teo_select()
299 * deeper state with lower "early hits" metric. in teo_select()
308 * one than the current maximum "early hits" state, so in teo_select()
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| /kernel/linux/linux-5.10/arch/nios2/ |
| D | Kconfig.debug | 4 bool "Activate early kernel debugging"
8 Enable early printk on console
10 early before the console code is initialized.
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| /kernel/linux/linux-5.10/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_init_ohci1394_early - 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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| /kernel/linux/linux-5.10/arch/x86/ |
| D | Kconfig.debug | 21 bool "Early printk" if EXPERT
28 early before the console code is initialized. For normal operation
34 bool "Early printk via EHCI debug port"
41 early before the console code is initialized. For normal operation
47 bool "Early printk via the xHCI debug port"
54 machine crashes very early before the regular console code is
62 You should normally say N here, unless you want to debug early
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| /kernel/linux/linux-5.10/arch/x86/mm/ |
| D | extable.c | 188 /* Restricted version used during very early boot */
191 /* Ignore early NMIs. */ in early_fixup_exception()
209 * the early IDT is loaded. This means that it is the in early_fixup_exception()
211 * when handlers are invoked early or to simply avoid causing in early_fixup_exception()
218 * Keep in mind that not all vectors actually get here. Early in early_fixup_exception()
239 early_printk("PANIC: early exception 0x%02x IP %lx:%lx error %lx cr2 0x%lx\n", in early_fixup_exception()
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| /kernel/linux/linux-5.10/Documentation/vm/ |
| D | hwpoison.rst | 66 early kill
85 Enable early kill mode globally
88 Set early/late kill mode/revert to system default
96 Early kill
120 some early filtering to avoid corrupted unintended pages in test suites.
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| /kernel/linux/linux-5.10/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.
169 If possible, posting your plans during the early stages can only be
210 disclose its plans early in the development process. Companies with
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| /kernel/linux/linux-5.10/drivers/tty/ |
| D | Kconfig | 329 bool "Early console (udbg) support for ePAPR hypervisors"
332 Select this option to enable early console (a.k.a. "udbg") support
337 int "Byte channel handle for early console (udbg)"
341 If you want early console (udbg) output through a byte channel,
347 Note that only one early console driver can be enabled, so don't
351 there simply will be no early console output. This is true also
403 bool "Early FDC console"
406 This registers a console on FDC channel 1 very early during boot (from
407 MIPS arch code). This is useful for bring-up and debugging early boot
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| /kernel/linux/linux-5.10/Documentation/x86/ |
| D | microcode.rst | 17 Early load microcode
20 The kernel can update microcode very early during boot. Loading
21 microcode early can fix CPU issues before they are observed during
138 the final kernel image. The early loader finds them and applies them.
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| /kernel/linux/linux-5.10/arch/arm/mach-mvebu/ |
| D | coherency_ll.S | 14 * 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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| /kernel/linux/linux-5.10/arch/x86/kernel/ |
| D | idt.c | 54 * Early traps running on the DEFAULT_STACK because the other interrupt
194 * idt_setup_early_traps - Initialize the idt table with early traps
217 * Early traps running on the DEFAULT_STACK because the other interrupt
241 * idt_setup_early_pf - Initialize the idt table with early pagefault handler
249 * handler from the early_idt_handler_array to initialize the early page
317 * idt_setup_early_handler - Initializes the idt table with early handlers
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| /kernel/linux/linux-5.10/arch/c6x/kernel/ |
| D | setup.c | 168 p->cpu_rev = "C6701 revision 0 (early CPU)"; in get_cpuinfo()
206 * Early parsing of the command line
258 * Do early machine setup and device tree parsing. This is called very
259 * early on the boot process.
282 /* Do some early initialization based on the flat device tree */ in machine_init()
391 * We have to do this early in case timer needs to be enabled in setup_arch()
396 /* We do this early for timer and core clock frequency */ in setup_arch()
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| /kernel/linux/linux-5.10/arch/openrisc/include/asm/ |
| D | fixmap.h | 31 * early in the boot process before memory initialization is complete.
32 * This is used, in particular, by the early serial console code.
40 * space before ioremap() is useable, e.g. really early in boot
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| /kernel/linux/linux-5.10/arch/arc/include/asm/ |
| D | serial.h | 10 * early 8250 (now earlycon) requires BASE_BAUD to be defined in this header.
12 * we do this in a helper by parsing the FDT early
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| /kernel/linux/linux-5.10/arch/powerpc/kernel/ |
| D | isa-bridge.c | 136 * isa_bridge_find_early - Find and map the ISA IO space early before
138 * the arch code when adding PCI PHBs to get early
178 pr_debug("ISA bridge (early) is %pOF\n", np); in isa_bridge_find_early()
182 * isa_bridge_find_early - Find and map the ISA IO space early before
184 * the arch code when adding PCI PHBs to get early
329 /* Check if we have an early ISA device, without PCI dev */ in isa_bridge_notify()
|