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@@ -1,1265 +0,0 @@
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-diff -Nur linux-5.4.69.orig/init/initramfs.c linux-5.4.69/init/initramfs.c
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---- linux-5.4.69.orig/init/initramfs.c 2020-10-01 13:19:27.000000000 +0200
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-+++ linux-5.4.69/init/initramfs.c 2020-10-31 02:34:40.814412219 +0100
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-@@ -674,6 +674,9 @@
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- initrd_start = 0;
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- initrd_end = 0;
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-
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-+#ifdef CONFIG_DEVTMPFS_MOUNT
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-+ devtmpfs_mount("dev");
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-+#endif
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- flush_delayed_fput();
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- return 0;
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- }
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-diff -Nur linux-5.4.69.orig/init/main.c linux-5.4.69/init/main.c
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---- linux-5.4.69.orig/init/main.c 2020-10-01 13:19:27.000000000 +0200
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-+++ linux-5.4.69/init/main.c 2020-10-31 02:32:35.699678836 +0100
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-@@ -1198,6 +1198,8 @@
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- if (ksys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
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- pr_err("Warning: unable to open an initial console.\n");
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-
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-+ printk(KERN_WARNING "Starting Linux (built with OpenADK).\n");
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-+
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- (void) ksys_dup(0);
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- (void) ksys_dup(0);
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- /*
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-@@ -1206,7 +1208,7 @@
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- */
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-
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- if (!ramdisk_execute_command)
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-- ramdisk_execute_command = "/init";
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-+ ramdisk_execute_command = "/sbin/init";
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-
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- if (ksys_access((const char __user *)
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- ramdisk_execute_command, 0) != 0) {
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-diff -Nur linux-5.4.69.orig/init/main.c.orig linux-5.4.69/init/main.c.orig
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---- linux-5.4.69.orig/init/main.c.orig 1970-01-01 01:00:00.000000000 +0100
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-+++ linux-5.4.69/init/main.c.orig 2020-10-01 13:19:27.000000000 +0200
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-@@ -0,0 +1,1227 @@
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-+// SPDX-License-Identifier: GPL-2.0-only
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-+/*
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-+ * linux/init/main.c
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-+ *
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-+ * Copyright (C) 1991, 1992 Linus Torvalds
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-+ *
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-+ * GK 2/5/95 - Changed to support mounting root fs via NFS
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-+ * Added initrd & change_root: Werner Almesberger & Hans Lermen, Feb '96
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-+ * Moan early if gcc is old, avoiding bogus kernels - Paul Gortmaker, May '96
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-+ * Simplified starting of init: Michael A. Griffith <grif@acm.org>
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-+ */
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-+
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-+#define DEBUG /* Enable initcall_debug */
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-+
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-+#include <linux/types.h>
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-+#include <linux/extable.h>
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-+#include <linux/module.h>
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-+#include <linux/proc_fs.h>
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-+#include <linux/binfmts.h>
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-+#include <linux/kernel.h>
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-+#include <linux/syscalls.h>
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-+#include <linux/stackprotector.h>
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-+#include <linux/string.h>
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-+#include <linux/ctype.h>
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-+#include <linux/delay.h>
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-+#include <linux/ioport.h>
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-+#include <linux/init.h>
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-+#include <linux/initrd.h>
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-+#include <linux/memblock.h>
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-+#include <linux/acpi.h>
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-+#include <linux/console.h>
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-+#include <linux/nmi.h>
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-+#include <linux/percpu.h>
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-+#include <linux/kmod.h>
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-+#include <linux/kprobes.h>
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-+#include <linux/vmalloc.h>
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-+#include <linux/kernel_stat.h>
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-+#include <linux/start_kernel.h>
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-+#include <linux/security.h>
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-+#include <linux/smp.h>
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-+#include <linux/profile.h>
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-+#include <linux/rcupdate.h>
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|
-+#include <linux/moduleparam.h>
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-+#include <linux/kallsyms.h>
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-+#include <linux/writeback.h>
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|
-+#include <linux/cpu.h>
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-+#include <linux/cpuset.h>
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|
-+#include <linux/cgroup.h>
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|
-+#include <linux/efi.h>
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|
-+#include <linux/tick.h>
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|
-+#include <linux/sched/isolation.h>
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|
-+#include <linux/interrupt.h>
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|
-+#include <linux/taskstats_kern.h>
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|
-+#include <linux/delayacct.h>
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|
-+#include <linux/unistd.h>
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|
-+#include <linux/utsname.h>
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|
-+#include <linux/rmap.h>
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|
-+#include <linux/mempolicy.h>
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|
|
-+#include <linux/key.h>
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|
|
-+#include <linux/buffer_head.h>
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|
|
-+#include <linux/page_ext.h>
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|
|
-+#include <linux/debug_locks.h>
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|
|
-+#include <linux/debugobjects.h>
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|
-+#include <linux/lockdep.h>
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|
-+#include <linux/kmemleak.h>
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|
-+#include <linux/pid_namespace.h>
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|
|
-+#include <linux/device.h>
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|
|
-+#include <linux/kthread.h>
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|
|
-+#include <linux/sched.h>
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|
-+#include <linux/sched/init.h>
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|
|
-+#include <linux/signal.h>
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|
|
-+#include <linux/idr.h>
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|
|
-+#include <linux/kgdb.h>
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|
|
-+#include <linux/ftrace.h>
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|
|
-+#include <linux/async.h>
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|
|
-+#include <linux/sfi.h>
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|
|
-+#include <linux/shmem_fs.h>
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|
|
-+#include <linux/slab.h>
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|
|
-+#include <linux/perf_event.h>
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|
|
-+#include <linux/ptrace.h>
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|
|
-+#include <linux/pti.h>
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|
|
-+#include <linux/blkdev.h>
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|
|
-+#include <linux/elevator.h>
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|
|
-+#include <linux/sched/clock.h>
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|
|
-+#include <linux/sched/task.h>
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|
|
-+#include <linux/sched/task_stack.h>
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|
|
-+#include <linux/context_tracking.h>
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|
|
-+#include <linux/random.h>
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|
|
-+#include <linux/list.h>
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|
|
-+#include <linux/integrity.h>
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|
|
-+#include <linux/proc_ns.h>
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|
|
-+#include <linux/io.h>
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|
|
-+#include <linux/cache.h>
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|
|
-+#include <linux/rodata_test.h>
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|
|
-+#include <linux/jump_label.h>
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|
|
-+#include <linux/mem_encrypt.h>
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|
|
-+
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|
|
-+#include <asm/io.h>
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|
|
-+#include <asm/bugs.h>
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|
|
-+#include <asm/setup.h>
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|
|
-+#include <asm/sections.h>
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|
|
-+#include <asm/cacheflush.h>
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|
|
-+
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|
|
-+#define CREATE_TRACE_POINTS
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|
|
-+#include <trace/events/initcall.h>
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|
|
-+
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|
|
-+static int kernel_init(void *);
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|
|
-+
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|
|
-+extern void init_IRQ(void);
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|
|
-+extern void radix_tree_init(void);
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|
|
-+
|
|
|
-+/*
|
|
|
-+ * Debug helper: via this flag we know that we are in 'early bootup code'
|
|
|
-+ * where only the boot processor is running with IRQ disabled. This means
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|
-+ * two things - IRQ must not be enabled before the flag is cleared and some
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-+ * operations which are not allowed with IRQ disabled are allowed while the
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-+ * flag is set.
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|
-+ */
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|
|
-+bool early_boot_irqs_disabled __read_mostly;
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-+
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|
|
-+enum system_states system_state __read_mostly;
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|
-+EXPORT_SYMBOL(system_state);
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-+
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|
|
-+/*
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-+ * Boot command-line arguments
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|
-+ */
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|
|
-+#define MAX_INIT_ARGS CONFIG_INIT_ENV_ARG_LIMIT
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|
|
-+#define MAX_INIT_ENVS CONFIG_INIT_ENV_ARG_LIMIT
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|
-+
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|
|
-+extern void time_init(void);
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|
|
-+/* Default late time init is NULL. archs can override this later. */
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|
-+void (*__initdata late_time_init)(void);
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|
-+
|
|
|
-+/* Untouched command line saved by arch-specific code. */
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|
|
-+char __initdata boot_command_line[COMMAND_LINE_SIZE];
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|
-+/* Untouched saved command line (eg. for /proc) */
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|
|
-+char *saved_command_line;
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|
|
-+/* Command line for parameter parsing */
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|
-+static char *static_command_line;
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|
|
-+/* Command line for per-initcall parameter parsing */
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|
-+static char *initcall_command_line;
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-+
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-+static char *execute_command;
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|
-+static char *ramdisk_execute_command;
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-+
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|
|
-+/*
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|
|
-+ * Used to generate warnings if static_key manipulation functions are used
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|
-+ * before jump_label_init is called.
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|
-+ */
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|
-+bool static_key_initialized __read_mostly;
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|
-+EXPORT_SYMBOL_GPL(static_key_initialized);
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|
-+
|
|
|
-+/*
|
|
|
-+ * If set, this is an indication to the drivers that reset the underlying
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|
-+ * device before going ahead with the initialization otherwise driver might
|
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|
-+ * rely on the BIOS and skip the reset operation.
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|
-+ *
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|
-+ * This is useful if kernel is booting in an unreliable environment.
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|
-+ * For ex. kdump situation where previous kernel has crashed, BIOS has been
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-+ * skipped and devices will be in unknown state.
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|
-+ */
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|
|
-+unsigned int reset_devices;
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|
-+EXPORT_SYMBOL(reset_devices);
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|
-+
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-+static int __init set_reset_devices(char *str)
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|
-+{
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|
|
-+ reset_devices = 1;
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|
-+ return 1;
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|
-+}
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|
-+
|
|
|
-+__setup("reset_devices", set_reset_devices);
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|
-+
|
|
|
-+static const char *argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
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|
-+const char *envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
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|
|
-+static const char *panic_later, *panic_param;
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|
-+
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|
|
-+extern const struct obs_kernel_param __setup_start[], __setup_end[];
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|
-+
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|
|
-+static bool __init obsolete_checksetup(char *line)
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|
|
-+{
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|
|
-+ const struct obs_kernel_param *p;
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|
|
-+ bool had_early_param = false;
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|
-+
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|
-+ p = __setup_start;
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|
-+ do {
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|
-+ int n = strlen(p->str);
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|
|
-+ if (parameqn(line, p->str, n)) {
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|
|
-+ if (p->early) {
|
|
|
-+ /* Already done in parse_early_param?
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|
-+ * (Needs exact match on param part).
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|
|
-+ * Keep iterating, as we can have early
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-+ * params and __setups of same names 8( */
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-+ if (line[n] == '\0' || line[n] == '=')
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|
-+ had_early_param = true;
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|
|
-+ } else if (!p->setup_func) {
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|
-+ pr_warn("Parameter %s is obsolete, ignored\n",
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|
-+ p->str);
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|
-+ return true;
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|
|
-+ } else if (p->setup_func(line + n))
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|
-+ return true;
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|
|
-+ }
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|
-+ p++;
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|
|
-+ } while (p < __setup_end);
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|
-+
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|
|
-+ return had_early_param;
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|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * This should be approx 2 Bo*oMips to start (note initial shift), and will
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|
-+ * still work even if initially too large, it will just take slightly longer
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|
|
-+ */
|
|
|
-+unsigned long loops_per_jiffy = (1<<12);
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|
|
-+EXPORT_SYMBOL(loops_per_jiffy);
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|
|
-+
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|
|
-+static int __init debug_kernel(char *str)
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|
|
-+{
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|
|
-+ console_loglevel = CONSOLE_LOGLEVEL_DEBUG;
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|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __init quiet_kernel(char *str)
|
|
|
-+{
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|
|
-+ console_loglevel = CONSOLE_LOGLEVEL_QUIET;
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+early_param("debug", debug_kernel);
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|
|
-+early_param("quiet", quiet_kernel);
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|
|
-+
|
|
|
-+static int __init loglevel(char *str)
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|
|
-+{
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|
|
-+ int newlevel;
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|
-+
|
|
|
-+ /*
|
|
|
-+ * Only update loglevel value when a correct setting was passed,
|
|
|
-+ * to prevent blind crashes (when loglevel being set to 0) that
|
|
|
-+ * are quite hard to debug
|
|
|
-+ */
|
|
|
-+ if (get_option(&str, &newlevel)) {
|
|
|
-+ console_loglevel = newlevel;
|
|
|
-+ return 0;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return -EINVAL;
|
|
|
-+}
|
|
|
-+
|
|
|
-+early_param("loglevel", loglevel);
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|
|
-+
|
|
|
-+/* Change NUL term back to "=", to make "param" the whole string. */
|
|
|
-+static int __init repair_env_string(char *param, char *val,
|
|
|
-+ const char *unused, void *arg)
|
|
|
-+{
|
|
|
-+ if (val) {
|
|
|
-+ /* param=val or param="val"? */
|
|
|
-+ if (val == param+strlen(param)+1)
|
|
|
-+ val[-1] = '=';
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|
|
-+ else if (val == param+strlen(param)+2) {
|
|
|
-+ val[-2] = '=';
|
|
|
-+ memmove(val-1, val, strlen(val)+1);
|
|
|
-+ val--;
|
|
|
-+ } else
|
|
|
-+ BUG();
|
|
|
-+ }
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+/* Anything after -- gets handed straight to init. */
|
|
|
-+static int __init set_init_arg(char *param, char *val,
|
|
|
-+ const char *unused, void *arg)
|
|
|
-+{
|
|
|
-+ unsigned int i;
|
|
|
-+
|
|
|
-+ if (panic_later)
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+ repair_env_string(param, val, unused, NULL);
|
|
|
-+
|
|
|
-+ for (i = 0; argv_init[i]; i++) {
|
|
|
-+ if (i == MAX_INIT_ARGS) {
|
|
|
-+ panic_later = "init";
|
|
|
-+ panic_param = param;
|
|
|
-+ return 0;
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+ argv_init[i] = param;
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Unknown boot options get handed to init, unless they look like
|
|
|
-+ * unused parameters (modprobe will find them in /proc/cmdline).
|
|
|
-+ */
|
|
|
-+static int __init unknown_bootoption(char *param, char *val,
|
|
|
-+ const char *unused, void *arg)
|
|
|
-+{
|
|
|
-+ repair_env_string(param, val, unused, NULL);
|
|
|
-+
|
|
|
-+ /* Handle obsolete-style parameters */
|
|
|
-+ if (obsolete_checksetup(param))
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+ /* Unused module parameter. */
|
|
|
-+ if (strchr(param, '.') && (!val || strchr(param, '.') < val))
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+ if (panic_later)
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+ if (val) {
|
|
|
-+ /* Environment option */
|
|
|
-+ unsigned int i;
|
|
|
-+ for (i = 0; envp_init[i]; i++) {
|
|
|
-+ if (i == MAX_INIT_ENVS) {
|
|
|
-+ panic_later = "env";
|
|
|
-+ panic_param = param;
|
|
|
-+ }
|
|
|
-+ if (!strncmp(param, envp_init[i], val - param))
|
|
|
-+ break;
|
|
|
-+ }
|
|
|
-+ envp_init[i] = param;
|
|
|
-+ } else {
|
|
|
-+ /* Command line option */
|
|
|
-+ unsigned int i;
|
|
|
-+ for (i = 0; argv_init[i]; i++) {
|
|
|
-+ if (i == MAX_INIT_ARGS) {
|
|
|
-+ panic_later = "init";
|
|
|
-+ panic_param = param;
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+ argv_init[i] = param;
|
|
|
-+ }
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __init init_setup(char *str)
|
|
|
-+{
|
|
|
-+ unsigned int i;
|
|
|
-+
|
|
|
-+ execute_command = str;
|
|
|
-+ /*
|
|
|
-+ * In case LILO is going to boot us with default command line,
|
|
|
-+ * it prepends "auto" before the whole cmdline which makes
|
|
|
-+ * the shell think it should execute a script with such name.
|
|
|
-+ * So we ignore all arguments entered _before_ init=... [MJ]
|
|
|
-+ */
|
|
|
-+ for (i = 1; i < MAX_INIT_ARGS; i++)
|
|
|
-+ argv_init[i] = NULL;
|
|
|
-+ return 1;
|
|
|
-+}
|
|
|
-+__setup("init=", init_setup);
|
|
|
-+
|
|
|
-+static int __init rdinit_setup(char *str)
|
|
|
-+{
|
|
|
-+ unsigned int i;
|
|
|
-+
|
|
|
-+ ramdisk_execute_command = str;
|
|
|
-+ /* See "auto" comment in init_setup */
|
|
|
-+ for (i = 1; i < MAX_INIT_ARGS; i++)
|
|
|
-+ argv_init[i] = NULL;
|
|
|
-+ return 1;
|
|
|
-+}
|
|
|
-+__setup("rdinit=", rdinit_setup);
|
|
|
-+
|
|
|
-+#ifndef CONFIG_SMP
|
|
|
-+static const unsigned int setup_max_cpus = NR_CPUS;
|
|
|
-+static inline void setup_nr_cpu_ids(void) { }
|
|
|
-+static inline void smp_prepare_cpus(unsigned int maxcpus) { }
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * We need to store the untouched command line for future reference.
|
|
|
-+ * We also need to store the touched command line since the parameter
|
|
|
-+ * parsing is performed in place, and we should allow a component to
|
|
|
-+ * store reference of name/value for future reference.
|
|
|
-+ */
|
|
|
-+static void __init setup_command_line(char *command_line)
|
|
|
-+{
|
|
|
-+ size_t len = strlen(boot_command_line) + 1;
|
|
|
-+
|
|
|
-+ saved_command_line = memblock_alloc(len, SMP_CACHE_BYTES);
|
|
|
-+ if (!saved_command_line)
|
|
|
-+ panic("%s: Failed to allocate %zu bytes\n", __func__, len);
|
|
|
-+
|
|
|
-+ initcall_command_line = memblock_alloc(len, SMP_CACHE_BYTES);
|
|
|
-+ if (!initcall_command_line)
|
|
|
-+ panic("%s: Failed to allocate %zu bytes\n", __func__, len);
|
|
|
-+
|
|
|
-+ static_command_line = memblock_alloc(len, SMP_CACHE_BYTES);
|
|
|
-+ if (!static_command_line)
|
|
|
-+ panic("%s: Failed to allocate %zu bytes\n", __func__, len);
|
|
|
-+
|
|
|
-+ strcpy(saved_command_line, boot_command_line);
|
|
|
-+ strcpy(static_command_line, command_line);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * We need to finalize in a non-__init function or else race conditions
|
|
|
-+ * between the root thread and the init thread may cause start_kernel to
|
|
|
-+ * be reaped by free_initmem before the root thread has proceeded to
|
|
|
-+ * cpu_idle.
|
|
|
-+ *
|
|
|
-+ * gcc-3.4 accidentally inlines this function, so use noinline.
|
|
|
-+ */
|
|
|
-+
|
|
|
-+static __initdata DECLARE_COMPLETION(kthreadd_done);
|
|
|
-+
|
|
|
-+noinline void __ref rest_init(void)
|
|
|
-+{
|
|
|
-+ struct task_struct *tsk;
|
|
|
-+ int pid;
|
|
|
-+
|
|
|
-+ rcu_scheduler_starting();
|
|
|
-+ /*
|
|
|
-+ * We need to spawn init first so that it obtains pid 1, however
|
|
|
-+ * the init task will end up wanting to create kthreads, which, if
|
|
|
-+ * we schedule it before we create kthreadd, will OOPS.
|
|
|
-+ */
|
|
|
-+ pid = kernel_thread(kernel_init, NULL, CLONE_FS);
|
|
|
-+ /*
|
|
|
-+ * Pin init on the boot CPU. Task migration is not properly working
|
|
|
-+ * until sched_init_smp() has been run. It will set the allowed
|
|
|
-+ * CPUs for init to the non isolated CPUs.
|
|
|
-+ */
|
|
|
-+ rcu_read_lock();
|
|
|
-+ tsk = find_task_by_pid_ns(pid, &init_pid_ns);
|
|
|
-+ set_cpus_allowed_ptr(tsk, cpumask_of(smp_processor_id()));
|
|
|
-+ rcu_read_unlock();
|
|
|
-+
|
|
|
-+ numa_default_policy();
|
|
|
-+ pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
|
|
|
-+ rcu_read_lock();
|
|
|
-+ kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns);
|
|
|
-+ rcu_read_unlock();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * Enable might_sleep() and smp_processor_id() checks.
|
|
|
-+ * They cannot be enabled earlier because with CONFIG_PREEMPTION=y
|
|
|
-+ * kernel_thread() would trigger might_sleep() splats. With
|
|
|
-+ * CONFIG_PREEMPT_VOLUNTARY=y the init task might have scheduled
|
|
|
-+ * already, but it's stuck on the kthreadd_done completion.
|
|
|
-+ */
|
|
|
-+ system_state = SYSTEM_SCHEDULING;
|
|
|
-+
|
|
|
-+ complete(&kthreadd_done);
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * The boot idle thread must execute schedule()
|
|
|
-+ * at least once to get things moving:
|
|
|
-+ */
|
|
|
-+ schedule_preempt_disabled();
|
|
|
-+ /* Call into cpu_idle with preempt disabled */
|
|
|
-+ cpu_startup_entry(CPUHP_ONLINE);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/* Check for early params. */
|
|
|
-+static int __init do_early_param(char *param, char *val,
|
|
|
-+ const char *unused, void *arg)
|
|
|
-+{
|
|
|
-+ const struct obs_kernel_param *p;
|
|
|
-+
|
|
|
-+ for (p = __setup_start; p < __setup_end; p++) {
|
|
|
-+ if ((p->early && parameq(param, p->str)) ||
|
|
|
-+ (strcmp(param, "console") == 0 &&
|
|
|
-+ strcmp(p->str, "earlycon") == 0)
|
|
|
-+ ) {
|
|
|
-+ if (p->setup_func(val) != 0)
|
|
|
-+ pr_warn("Malformed early option '%s'\n", param);
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+ /* We accept everything at this stage. */
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+void __init parse_early_options(char *cmdline)
|
|
|
-+{
|
|
|
-+ parse_args("early options", cmdline, NULL, 0, 0, 0, NULL,
|
|
|
-+ do_early_param);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/* Arch code calls this early on, or if not, just before other parsing. */
|
|
|
-+void __init parse_early_param(void)
|
|
|
-+{
|
|
|
-+ static int done __initdata;
|
|
|
-+ static char tmp_cmdline[COMMAND_LINE_SIZE] __initdata;
|
|
|
-+
|
|
|
-+ if (done)
|
|
|
-+ return;
|
|
|
-+
|
|
|
-+ /* All fall through to do_early_param. */
|
|
|
-+ strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
|
|
|
-+ parse_early_options(tmp_cmdline);
|
|
|
-+ done = 1;
|
|
|
-+}
|
|
|
-+
|
|
|
-+void __init __weak arch_post_acpi_subsys_init(void) { }
|
|
|
-+
|
|
|
-+void __init __weak smp_setup_processor_id(void)
|
|
|
-+{
|
|
|
-+}
|
|
|
-+
|
|
|
-+# if THREAD_SIZE >= PAGE_SIZE
|
|
|
-+void __init __weak thread_stack_cache_init(void)
|
|
|
-+{
|
|
|
-+}
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+void __init __weak mem_encrypt_init(void) { }
|
|
|
-+
|
|
|
-+void __init __weak poking_init(void) { }
|
|
|
-+
|
|
|
-+void __init __weak pgtable_cache_init(void) { }
|
|
|
-+
|
|
|
-+bool initcall_debug;
|
|
|
-+core_param(initcall_debug, initcall_debug, bool, 0644);
|
|
|
-+
|
|
|
-+#ifdef TRACEPOINTS_ENABLED
|
|
|
-+static void __init initcall_debug_enable(void);
|
|
|
-+#else
|
|
|
-+static inline void initcall_debug_enable(void)
|
|
|
-+{
|
|
|
-+}
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+/* Report memory auto-initialization states for this boot. */
|
|
|
-+static void __init report_meminit(void)
|
|
|
-+{
|
|
|
-+ const char *stack;
|
|
|
-+
|
|
|
-+ if (IS_ENABLED(CONFIG_INIT_STACK_ALL))
|
|
|
-+ stack = "all";
|
|
|
-+ else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL))
|
|
|
-+ stack = "byref_all";
|
|
|
-+ else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF))
|
|
|
-+ stack = "byref";
|
|
|
-+ else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_USER))
|
|
|
-+ stack = "__user";
|
|
|
-+ else
|
|
|
-+ stack = "off";
|
|
|
-+
|
|
|
-+ pr_info("mem auto-init: stack:%s, heap alloc:%s, heap free:%s\n",
|
|
|
-+ stack, want_init_on_alloc(GFP_KERNEL) ? "on" : "off",
|
|
|
-+ want_init_on_free() ? "on" : "off");
|
|
|
-+ if (want_init_on_free())
|
|
|
-+ pr_info("mem auto-init: clearing system memory may take some time...\n");
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Set up kernel memory allocators
|
|
|
-+ */
|
|
|
-+static void __init mm_init(void)
|
|
|
-+{
|
|
|
-+ /*
|
|
|
-+ * page_ext requires contiguous pages,
|
|
|
-+ * bigger than MAX_ORDER unless SPARSEMEM.
|
|
|
-+ */
|
|
|
-+ page_ext_init_flatmem();
|
|
|
-+ init_debug_pagealloc();
|
|
|
-+ report_meminit();
|
|
|
-+ mem_init();
|
|
|
-+ kmem_cache_init();
|
|
|
-+ kmemleak_init();
|
|
|
-+ pgtable_init();
|
|
|
-+ debug_objects_mem_init();
|
|
|
-+ vmalloc_init();
|
|
|
-+ ioremap_huge_init();
|
|
|
-+ /* Should be run before the first non-init thread is created */
|
|
|
-+ init_espfix_bsp();
|
|
|
-+ /* Should be run after espfix64 is set up. */
|
|
|
-+ pti_init();
|
|
|
-+}
|
|
|
-+
|
|
|
-+void __init __weak arch_call_rest_init(void)
|
|
|
-+{
|
|
|
-+ rest_init();
|
|
|
-+}
|
|
|
-+
|
|
|
-+asmlinkage __visible void __init start_kernel(void)
|
|
|
-+{
|
|
|
-+ char *command_line;
|
|
|
-+ char *after_dashes;
|
|
|
-+
|
|
|
-+ set_task_stack_end_magic(&init_task);
|
|
|
-+ smp_setup_processor_id();
|
|
|
-+ debug_objects_early_init();
|
|
|
-+
|
|
|
-+ cgroup_init_early();
|
|
|
-+
|
|
|
-+ local_irq_disable();
|
|
|
-+ early_boot_irqs_disabled = true;
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * Interrupts are still disabled. Do necessary setups, then
|
|
|
-+ * enable them.
|
|
|
-+ */
|
|
|
-+ boot_cpu_init();
|
|
|
-+ page_address_init();
|
|
|
-+ pr_notice("%s", linux_banner);
|
|
|
-+ early_security_init();
|
|
|
-+ setup_arch(&command_line);
|
|
|
-+ setup_command_line(command_line);
|
|
|
-+ setup_nr_cpu_ids();
|
|
|
-+ setup_per_cpu_areas();
|
|
|
-+ smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
|
|
|
-+ boot_cpu_hotplug_init();
|
|
|
-+
|
|
|
-+ build_all_zonelists(NULL);
|
|
|
-+ page_alloc_init();
|
|
|
-+
|
|
|
-+ pr_notice("Kernel command line: %s\n", boot_command_line);
|
|
|
-+ /* parameters may set static keys */
|
|
|
-+ jump_label_init();
|
|
|
-+ parse_early_param();
|
|
|
-+ after_dashes = parse_args("Booting kernel",
|
|
|
-+ static_command_line, __start___param,
|
|
|
-+ __stop___param - __start___param,
|
|
|
-+ -1, -1, NULL, &unknown_bootoption);
|
|
|
-+ if (!IS_ERR_OR_NULL(after_dashes))
|
|
|
-+ parse_args("Setting init args", after_dashes, NULL, 0, -1, -1,
|
|
|
-+ NULL, set_init_arg);
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * These use large bootmem allocations and must precede
|
|
|
-+ * kmem_cache_init()
|
|
|
-+ */
|
|
|
-+ setup_log_buf(0);
|
|
|
-+ vfs_caches_init_early();
|
|
|
-+ sort_main_extable();
|
|
|
-+ trap_init();
|
|
|
-+ mm_init();
|
|
|
-+
|
|
|
-+ ftrace_init();
|
|
|
-+
|
|
|
-+ /* trace_printk can be enabled here */
|
|
|
-+ early_trace_init();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * Set up the scheduler prior starting any interrupts (such as the
|
|
|
-+ * timer interrupt). Full topology setup happens at smp_init()
|
|
|
-+ * time - but meanwhile we still have a functioning scheduler.
|
|
|
-+ */
|
|
|
-+ sched_init();
|
|
|
-+ /*
|
|
|
-+ * Disable preemption - early bootup scheduling is extremely
|
|
|
-+ * fragile until we cpu_idle() for the first time.
|
|
|
-+ */
|
|
|
-+ preempt_disable();
|
|
|
-+ if (WARN(!irqs_disabled(),
|
|
|
-+ "Interrupts were enabled *very* early, fixing it\n"))
|
|
|
-+ local_irq_disable();
|
|
|
-+ radix_tree_init();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * Set up housekeeping before setting up workqueues to allow the unbound
|
|
|
-+ * workqueue to take non-housekeeping into account.
|
|
|
-+ */
|
|
|
-+ housekeeping_init();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * Allow workqueue creation and work item queueing/cancelling
|
|
|
-+ * early. Work item execution depends on kthreads and starts after
|
|
|
-+ * workqueue_init().
|
|
|
-+ */
|
|
|
-+ workqueue_init_early();
|
|
|
-+
|
|
|
-+ rcu_init();
|
|
|
-+
|
|
|
-+ /* Trace events are available after this */
|
|
|
-+ trace_init();
|
|
|
-+
|
|
|
-+ if (initcall_debug)
|
|
|
-+ initcall_debug_enable();
|
|
|
-+
|
|
|
-+ context_tracking_init();
|
|
|
-+ /* init some links before init_ISA_irqs() */
|
|
|
-+ early_irq_init();
|
|
|
-+ init_IRQ();
|
|
|
-+ tick_init();
|
|
|
-+ rcu_init_nohz();
|
|
|
-+ init_timers();
|
|
|
-+ hrtimers_init();
|
|
|
-+ softirq_init();
|
|
|
-+ timekeeping_init();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * For best initial stack canary entropy, prepare it after:
|
|
|
-+ * - setup_arch() for any UEFI RNG entropy and boot cmdline access
|
|
|
-+ * - timekeeping_init() for ktime entropy used in rand_initialize()
|
|
|
-+ * - rand_initialize() to get any arch-specific entropy like RDRAND
|
|
|
-+ * - add_latent_entropy() to get any latent entropy
|
|
|
-+ * - adding command line entropy
|
|
|
-+ */
|
|
|
-+ rand_initialize();
|
|
|
-+ add_latent_entropy();
|
|
|
-+ add_device_randomness(command_line, strlen(command_line));
|
|
|
-+ boot_init_stack_canary();
|
|
|
-+
|
|
|
-+ time_init();
|
|
|
-+ perf_event_init();
|
|
|
-+ profile_init();
|
|
|
-+ call_function_init();
|
|
|
-+ WARN(!irqs_disabled(), "Interrupts were enabled early\n");
|
|
|
-+
|
|
|
-+ early_boot_irqs_disabled = false;
|
|
|
-+ local_irq_enable();
|
|
|
-+
|
|
|
-+ kmem_cache_init_late();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * HACK ALERT! This is early. We're enabling the console before
|
|
|
-+ * we've done PCI setups etc, and console_init() must be aware of
|
|
|
-+ * this. But we do want output early, in case something goes wrong.
|
|
|
-+ */
|
|
|
-+ console_init();
|
|
|
-+ if (panic_later)
|
|
|
-+ panic("Too many boot %s vars at `%s'", panic_later,
|
|
|
-+ panic_param);
|
|
|
-+
|
|
|
-+ lockdep_init();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * Need to run this when irqs are enabled, because it wants
|
|
|
-+ * to self-test [hard/soft]-irqs on/off lock inversion bugs
|
|
|
-+ * too:
|
|
|
-+ */
|
|
|
-+ locking_selftest();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * This needs to be called before any devices perform DMA
|
|
|
-+ * operations that might use the SWIOTLB bounce buffers. It will
|
|
|
-+ * mark the bounce buffers as decrypted so that their usage will
|
|
|
-+ * not cause "plain-text" data to be decrypted when accessed.
|
|
|
-+ */
|
|
|
-+ mem_encrypt_init();
|
|
|
-+
|
|
|
-+#ifdef CONFIG_BLK_DEV_INITRD
|
|
|
-+ if (initrd_start && !initrd_below_start_ok &&
|
|
|
-+ page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {
|
|
|
-+ pr_crit("initrd overwritten (0x%08lx < 0x%08lx) - disabling it.\n",
|
|
|
-+ page_to_pfn(virt_to_page((void *)initrd_start)),
|
|
|
-+ min_low_pfn);
|
|
|
-+ initrd_start = 0;
|
|
|
-+ }
|
|
|
-+#endif
|
|
|
-+ setup_per_cpu_pageset();
|
|
|
-+ numa_policy_init();
|
|
|
-+ acpi_early_init();
|
|
|
-+ if (late_time_init)
|
|
|
-+ late_time_init();
|
|
|
-+ sched_clock_init();
|
|
|
-+ calibrate_delay();
|
|
|
-+ pid_idr_init();
|
|
|
-+ anon_vma_init();
|
|
|
-+#ifdef CONFIG_X86
|
|
|
-+ if (efi_enabled(EFI_RUNTIME_SERVICES))
|
|
|
-+ efi_enter_virtual_mode();
|
|
|
-+#endif
|
|
|
-+ thread_stack_cache_init();
|
|
|
-+ cred_init();
|
|
|
-+ fork_init();
|
|
|
-+ proc_caches_init();
|
|
|
-+ uts_ns_init();
|
|
|
-+ buffer_init();
|
|
|
-+ key_init();
|
|
|
-+ security_init();
|
|
|
-+ dbg_late_init();
|
|
|
-+ vfs_caches_init();
|
|
|
-+ pagecache_init();
|
|
|
-+ signals_init();
|
|
|
-+ seq_file_init();
|
|
|
-+ proc_root_init();
|
|
|
-+ nsfs_init();
|
|
|
-+ cpuset_init();
|
|
|
-+ cgroup_init();
|
|
|
-+ taskstats_init_early();
|
|
|
-+ delayacct_init();
|
|
|
-+
|
|
|
-+ poking_init();
|
|
|
-+ check_bugs();
|
|
|
-+
|
|
|
-+ acpi_subsystem_init();
|
|
|
-+ arch_post_acpi_subsys_init();
|
|
|
-+ sfi_init_late();
|
|
|
-+
|
|
|
-+ /* Do the rest non-__init'ed, we're now alive */
|
|
|
-+ arch_call_rest_init();
|
|
|
-+
|
|
|
-+ prevent_tail_call_optimization();
|
|
|
-+}
|
|
|
-+
|
|
|
-+/* Call all constructor functions linked into the kernel. */
|
|
|
-+static void __init do_ctors(void)
|
|
|
-+{
|
|
|
-+#ifdef CONFIG_CONSTRUCTORS
|
|
|
-+ ctor_fn_t *fn = (ctor_fn_t *) __ctors_start;
|
|
|
-+
|
|
|
-+ for (; fn < (ctor_fn_t *) __ctors_end; fn++)
|
|
|
-+ (*fn)();
|
|
|
-+#endif
|
|
|
-+}
|
|
|
-+
|
|
|
-+#ifdef CONFIG_KALLSYMS
|
|
|
-+struct blacklist_entry {
|
|
|
-+ struct list_head next;
|
|
|
-+ char *buf;
|
|
|
-+};
|
|
|
-+
|
|
|
-+static __initdata_or_module LIST_HEAD(blacklisted_initcalls);
|
|
|
-+
|
|
|
-+static int __init initcall_blacklist(char *str)
|
|
|
-+{
|
|
|
-+ char *str_entry;
|
|
|
-+ struct blacklist_entry *entry;
|
|
|
-+
|
|
|
-+ /* str argument is a comma-separated list of functions */
|
|
|
-+ do {
|
|
|
-+ str_entry = strsep(&str, ",");
|
|
|
-+ if (str_entry) {
|
|
|
-+ pr_debug("blacklisting initcall %s\n", str_entry);
|
|
|
-+ entry = memblock_alloc(sizeof(*entry),
|
|
|
-+ SMP_CACHE_BYTES);
|
|
|
-+ if (!entry)
|
|
|
-+ panic("%s: Failed to allocate %zu bytes\n",
|
|
|
-+ __func__, sizeof(*entry));
|
|
|
-+ entry->buf = memblock_alloc(strlen(str_entry) + 1,
|
|
|
-+ SMP_CACHE_BYTES);
|
|
|
-+ if (!entry->buf)
|
|
|
-+ panic("%s: Failed to allocate %zu bytes\n",
|
|
|
-+ __func__, strlen(str_entry) + 1);
|
|
|
-+ strcpy(entry->buf, str_entry);
|
|
|
-+ list_add(&entry->next, &blacklisted_initcalls);
|
|
|
-+ }
|
|
|
-+ } while (str_entry);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static bool __init_or_module initcall_blacklisted(initcall_t fn)
|
|
|
-+{
|
|
|
-+ struct blacklist_entry *entry;
|
|
|
-+ char fn_name[KSYM_SYMBOL_LEN];
|
|
|
-+ unsigned long addr;
|
|
|
-+
|
|
|
-+ if (list_empty(&blacklisted_initcalls))
|
|
|
-+ return false;
|
|
|
-+
|
|
|
-+ addr = (unsigned long) dereference_function_descriptor(fn);
|
|
|
-+ sprint_symbol_no_offset(fn_name, addr);
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * fn will be "function_name [module_name]" where [module_name] is not
|
|
|
-+ * displayed for built-in init functions. Strip off the [module_name].
|
|
|
-+ */
|
|
|
-+ strreplace(fn_name, ' ', '\0');
|
|
|
-+
|
|
|
-+ list_for_each_entry(entry, &blacklisted_initcalls, next) {
|
|
|
-+ if (!strcmp(fn_name, entry->buf)) {
|
|
|
-+ pr_debug("initcall %s blacklisted\n", fn_name);
|
|
|
-+ return true;
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return false;
|
|
|
-+}
|
|
|
-+#else
|
|
|
-+static int __init initcall_blacklist(char *str)
|
|
|
-+{
|
|
|
-+ pr_warn("initcall_blacklist requires CONFIG_KALLSYMS\n");
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static bool __init_or_module initcall_blacklisted(initcall_t fn)
|
|
|
-+{
|
|
|
-+ return false;
|
|
|
-+}
|
|
|
-+#endif
|
|
|
-+__setup("initcall_blacklist=", initcall_blacklist);
|
|
|
-+
|
|
|
-+static __init_or_module void
|
|
|
-+trace_initcall_start_cb(void *data, initcall_t fn)
|
|
|
-+{
|
|
|
-+ ktime_t *calltime = (ktime_t *)data;
|
|
|
-+
|
|
|
-+ printk(KERN_DEBUG "calling %pS @ %i\n", fn, task_pid_nr(current));
|
|
|
-+ *calltime = ktime_get();
|
|
|
-+}
|
|
|
-+
|
|
|
-+static __init_or_module void
|
|
|
-+trace_initcall_finish_cb(void *data, initcall_t fn, int ret)
|
|
|
-+{
|
|
|
-+ ktime_t *calltime = (ktime_t *)data;
|
|
|
-+ ktime_t delta, rettime;
|
|
|
-+ unsigned long long duration;
|
|
|
-+
|
|
|
-+ rettime = ktime_get();
|
|
|
-+ delta = ktime_sub(rettime, *calltime);
|
|
|
-+ duration = (unsigned long long) ktime_to_ns(delta) >> 10;
|
|
|
-+ printk(KERN_DEBUG "initcall %pS returned %d after %lld usecs\n",
|
|
|
-+ fn, ret, duration);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static ktime_t initcall_calltime;
|
|
|
-+
|
|
|
-+#ifdef TRACEPOINTS_ENABLED
|
|
|
-+static void __init initcall_debug_enable(void)
|
|
|
-+{
|
|
|
-+ int ret;
|
|
|
-+
|
|
|
-+ ret = register_trace_initcall_start(trace_initcall_start_cb,
|
|
|
-+ &initcall_calltime);
|
|
|
-+ ret |= register_trace_initcall_finish(trace_initcall_finish_cb,
|
|
|
-+ &initcall_calltime);
|
|
|
-+ WARN(ret, "Failed to register initcall tracepoints\n");
|
|
|
-+}
|
|
|
-+# define do_trace_initcall_start trace_initcall_start
|
|
|
-+# define do_trace_initcall_finish trace_initcall_finish
|
|
|
-+#else
|
|
|
-+static inline void do_trace_initcall_start(initcall_t fn)
|
|
|
-+{
|
|
|
-+ if (!initcall_debug)
|
|
|
-+ return;
|
|
|
-+ trace_initcall_start_cb(&initcall_calltime, fn);
|
|
|
-+}
|
|
|
-+static inline void do_trace_initcall_finish(initcall_t fn, int ret)
|
|
|
-+{
|
|
|
-+ if (!initcall_debug)
|
|
|
-+ return;
|
|
|
-+ trace_initcall_finish_cb(&initcall_calltime, fn, ret);
|
|
|
-+}
|
|
|
-+#endif /* !TRACEPOINTS_ENABLED */
|
|
|
-+
|
|
|
-+int __init_or_module do_one_initcall(initcall_t fn)
|
|
|
-+{
|
|
|
-+ int count = preempt_count();
|
|
|
-+ char msgbuf[64];
|
|
|
-+ int ret;
|
|
|
-+
|
|
|
-+ if (initcall_blacklisted(fn))
|
|
|
-+ return -EPERM;
|
|
|
-+
|
|
|
-+ do_trace_initcall_start(fn);
|
|
|
-+ ret = fn();
|
|
|
-+ do_trace_initcall_finish(fn, ret);
|
|
|
-+
|
|
|
-+ msgbuf[0] = 0;
|
|
|
-+
|
|
|
-+ if (preempt_count() != count) {
|
|
|
-+ sprintf(msgbuf, "preemption imbalance ");
|
|
|
-+ preempt_count_set(count);
|
|
|
-+ }
|
|
|
-+ if (irqs_disabled()) {
|
|
|
-+ strlcat(msgbuf, "disabled interrupts ", sizeof(msgbuf));
|
|
|
-+ local_irq_enable();
|
|
|
-+ }
|
|
|
-+ WARN(msgbuf[0], "initcall %pS returned with %s\n", fn, msgbuf);
|
|
|
-+
|
|
|
-+ add_latent_entropy();
|
|
|
-+ return ret;
|
|
|
-+}
|
|
|
-+
|
|
|
-+
|
|
|
-+extern initcall_entry_t __initcall_start[];
|
|
|
-+extern initcall_entry_t __initcall0_start[];
|
|
|
-+extern initcall_entry_t __initcall1_start[];
|
|
|
-+extern initcall_entry_t __initcall2_start[];
|
|
|
-+extern initcall_entry_t __initcall3_start[];
|
|
|
-+extern initcall_entry_t __initcall4_start[];
|
|
|
-+extern initcall_entry_t __initcall5_start[];
|
|
|
-+extern initcall_entry_t __initcall6_start[];
|
|
|
-+extern initcall_entry_t __initcall7_start[];
|
|
|
-+extern initcall_entry_t __initcall_end[];
|
|
|
-+
|
|
|
-+static initcall_entry_t *initcall_levels[] __initdata = {
|
|
|
-+ __initcall0_start,
|
|
|
-+ __initcall1_start,
|
|
|
-+ __initcall2_start,
|
|
|
-+ __initcall3_start,
|
|
|
-+ __initcall4_start,
|
|
|
-+ __initcall5_start,
|
|
|
-+ __initcall6_start,
|
|
|
-+ __initcall7_start,
|
|
|
-+ __initcall_end,
|
|
|
-+};
|
|
|
-+
|
|
|
-+/* Keep these in sync with initcalls in include/linux/init.h */
|
|
|
-+static const char *initcall_level_names[] __initdata = {
|
|
|
-+ "pure",
|
|
|
-+ "core",
|
|
|
-+ "postcore",
|
|
|
-+ "arch",
|
|
|
-+ "subsys",
|
|
|
-+ "fs",
|
|
|
-+ "device",
|
|
|
-+ "late",
|
|
|
-+};
|
|
|
-+
|
|
|
-+static void __init do_initcall_level(int level)
|
|
|
-+{
|
|
|
-+ initcall_entry_t *fn;
|
|
|
-+
|
|
|
-+ strcpy(initcall_command_line, saved_command_line);
|
|
|
-+ parse_args(initcall_level_names[level],
|
|
|
-+ initcall_command_line, __start___param,
|
|
|
-+ __stop___param - __start___param,
|
|
|
-+ level, level,
|
|
|
-+ NULL, &repair_env_string);
|
|
|
-+
|
|
|
-+ trace_initcall_level(initcall_level_names[level]);
|
|
|
-+ for (fn = initcall_levels[level]; fn < initcall_levels[level+1]; fn++)
|
|
|
-+ do_one_initcall(initcall_from_entry(fn));
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void __init do_initcalls(void)
|
|
|
-+{
|
|
|
-+ int level;
|
|
|
-+
|
|
|
-+ for (level = 0; level < ARRAY_SIZE(initcall_levels) - 1; level++)
|
|
|
-+ do_initcall_level(level);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Ok, the machine is now initialized. None of the devices
|
|
|
-+ * have been touched yet, but the CPU subsystem is up and
|
|
|
-+ * running, and memory and process management works.
|
|
|
-+ *
|
|
|
-+ * Now we can finally start doing some real work..
|
|
|
-+ */
|
|
|
-+static void __init do_basic_setup(void)
|
|
|
-+{
|
|
|
-+ cpuset_init_smp();
|
|
|
-+ driver_init();
|
|
|
-+ init_irq_proc();
|
|
|
-+ do_ctors();
|
|
|
-+ usermodehelper_enable();
|
|
|
-+ do_initcalls();
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void __init do_pre_smp_initcalls(void)
|
|
|
-+{
|
|
|
-+ initcall_entry_t *fn;
|
|
|
-+
|
|
|
-+ trace_initcall_level("early");
|
|
|
-+ for (fn = __initcall_start; fn < __initcall0_start; fn++)
|
|
|
-+ do_one_initcall(initcall_from_entry(fn));
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int run_init_process(const char *init_filename)
|
|
|
-+{
|
|
|
-+ argv_init[0] = init_filename;
|
|
|
-+ pr_info("Run %s as init process\n", init_filename);
|
|
|
-+ return do_execve(getname_kernel(init_filename),
|
|
|
-+ (const char __user *const __user *)argv_init,
|
|
|
-+ (const char __user *const __user *)envp_init);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int try_to_run_init_process(const char *init_filename)
|
|
|
-+{
|
|
|
-+ int ret;
|
|
|
-+
|
|
|
-+ ret = run_init_process(init_filename);
|
|
|
-+
|
|
|
-+ if (ret && ret != -ENOENT) {
|
|
|
-+ pr_err("Starting init: %s exists but couldn't execute it (error %d)\n",
|
|
|
-+ init_filename, ret);
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return ret;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static noinline void __init kernel_init_freeable(void);
|
|
|
-+
|
|
|
-+#if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_STRICT_MODULE_RWX)
|
|
|
-+bool rodata_enabled __ro_after_init = true;
|
|
|
-+static int __init set_debug_rodata(char *str)
|
|
|
-+{
|
|
|
-+ return strtobool(str, &rodata_enabled);
|
|
|
-+}
|
|
|
-+__setup("rodata=", set_debug_rodata);
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+#ifdef CONFIG_STRICT_KERNEL_RWX
|
|
|
-+static void mark_readonly(void)
|
|
|
-+{
|
|
|
-+ if (rodata_enabled) {
|
|
|
-+ /*
|
|
|
-+ * load_module() results in W+X mappings, which are cleaned
|
|
|
-+ * up with call_rcu(). Let's make sure that queued work is
|
|
|
-+ * flushed so that we don't hit false positives looking for
|
|
|
-+ * insecure pages which are W+X.
|
|
|
-+ */
|
|
|
-+ rcu_barrier();
|
|
|
-+ mark_rodata_ro();
|
|
|
-+ rodata_test();
|
|
|
-+ } else
|
|
|
-+ pr_info("Kernel memory protection disabled.\n");
|
|
|
-+}
|
|
|
-+#else
|
|
|
-+static inline void mark_readonly(void)
|
|
|
-+{
|
|
|
-+ pr_warn("This architecture does not have kernel memory protection.\n");
|
|
|
-+}
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+void __weak free_initmem(void)
|
|
|
-+{
|
|
|
-+ free_initmem_default(POISON_FREE_INITMEM);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __ref kernel_init(void *unused)
|
|
|
-+{
|
|
|
-+ int ret;
|
|
|
-+
|
|
|
-+ kernel_init_freeable();
|
|
|
-+ /* need to finish all async __init code before freeing the memory */
|
|
|
-+ async_synchronize_full();
|
|
|
-+ kprobe_free_init_mem();
|
|
|
-+ ftrace_free_init_mem();
|
|
|
-+ free_initmem();
|
|
|
-+ mark_readonly();
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * Kernel mappings are now finalized - update the userspace page-table
|
|
|
-+ * to finalize PTI.
|
|
|
-+ */
|
|
|
-+ pti_finalize();
|
|
|
-+
|
|
|
-+ system_state = SYSTEM_RUNNING;
|
|
|
-+ numa_default_policy();
|
|
|
-+
|
|
|
-+ rcu_end_inkernel_boot();
|
|
|
-+
|
|
|
-+ if (ramdisk_execute_command) {
|
|
|
-+ ret = run_init_process(ramdisk_execute_command);
|
|
|
-+ if (!ret)
|
|
|
-+ return 0;
|
|
|
-+ pr_err("Failed to execute %s (error %d)\n",
|
|
|
-+ ramdisk_execute_command, ret);
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * We try each of these until one succeeds.
|
|
|
-+ *
|
|
|
-+ * The Bourne shell can be used instead of init if we are
|
|
|
-+ * trying to recover a really broken machine.
|
|
|
-+ */
|
|
|
-+ if (execute_command) {
|
|
|
-+ ret = run_init_process(execute_command);
|
|
|
-+ if (!ret)
|
|
|
-+ return 0;
|
|
|
-+ panic("Requested init %s failed (error %d).",
|
|
|
-+ execute_command, ret);
|
|
|
-+ }
|
|
|
-+ if (!try_to_run_init_process("/sbin/init") ||
|
|
|
-+ !try_to_run_init_process("/etc/init") ||
|
|
|
-+ !try_to_run_init_process("/bin/init") ||
|
|
|
-+ !try_to_run_init_process("/bin/sh"))
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+ panic("No working init found. Try passing init= option to kernel. "
|
|
|
-+ "See Linux Documentation/admin-guide/init.rst for guidance.");
|
|
|
-+}
|
|
|
-+
|
|
|
-+static noinline void __init kernel_init_freeable(void)
|
|
|
-+{
|
|
|
-+ /*
|
|
|
-+ * Wait until kthreadd is all set-up.
|
|
|
-+ */
|
|
|
-+ wait_for_completion(&kthreadd_done);
|
|
|
-+
|
|
|
-+ /* Now the scheduler is fully set up and can do blocking allocations */
|
|
|
-+ gfp_allowed_mask = __GFP_BITS_MASK;
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * init can allocate pages on any node
|
|
|
-+ */
|
|
|
-+ set_mems_allowed(node_states[N_MEMORY]);
|
|
|
-+
|
|
|
-+ cad_pid = task_pid(current);
|
|
|
-+
|
|
|
-+ smp_prepare_cpus(setup_max_cpus);
|
|
|
-+
|
|
|
-+ workqueue_init();
|
|
|
-+
|
|
|
-+ init_mm_internals();
|
|
|
-+
|
|
|
-+ do_pre_smp_initcalls();
|
|
|
-+ lockup_detector_init();
|
|
|
-+
|
|
|
-+ smp_init();
|
|
|
-+ sched_init_smp();
|
|
|
-+
|
|
|
-+ page_alloc_init_late();
|
|
|
-+ /* Initialize page ext after all struct pages are initialized. */
|
|
|
-+ page_ext_init();
|
|
|
-+
|
|
|
-+ do_basic_setup();
|
|
|
-+
|
|
|
-+ /* Open the /dev/console on the rootfs, this should never fail */
|
|
|
-+ if (ksys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
|
|
|
-+ pr_err("Warning: unable to open an initial console.\n");
|
|
|
-+
|
|
|
-+ (void) ksys_dup(0);
|
|
|
-+ (void) ksys_dup(0);
|
|
|
-+ /*
|
|
|
-+ * check if there is an early userspace init. If yes, let it do all
|
|
|
-+ * the work
|
|
|
-+ */
|
|
|
-+
|
|
|
-+ if (!ramdisk_execute_command)
|
|
|
-+ ramdisk_execute_command = "/init";
|
|
|
-+
|
|
|
-+ if (ksys_access((const char __user *)
|
|
|
-+ ramdisk_execute_command, 0) != 0) {
|
|
|
-+ ramdisk_execute_command = NULL;
|
|
|
-+ prepare_namespace();
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * Ok, we have completed the initial bootup, and
|
|
|
-+ * we're essentially up and running. Get rid of the
|
|
|
-+ * initmem segments and start the user-mode stuff..
|
|
|
-+ *
|
|
|
-+ * rootfs is available now, try loading the public keys
|
|
|
-+ * and default modules
|
|
|
-+ */
|
|
|
-+
|
|
|
-+ integrity_load_keys();
|
|
|
-+}
|
Waldemar Brodkorb