mirror of https://github.com/hak5/openwrt.git
211 lines
5.5 KiB
Diff
211 lines
5.5 KiB
Diff
--- a/arch/x86/kernel/vmlinux_32.lds.S
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+++ b/arch/x86/kernel/vmlinux_32.lds.S
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@@ -136,6 +136,12 @@ SECTIONS
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INITCALLS
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__initcall_end = .;
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}
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+ .root_initcall.init : AT(ADDR(.root_initcall.init) - LOAD_OFFSET) {
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+ __root_initcall_start = .;
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+ INITCALLS_ROOT
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+ __root_initcall_end = .;
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+ }
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+
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.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
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__con_initcall_start = .;
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*(.con_initcall.init)
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--- a/drivers/mtd/devices/block2mtd.c
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+++ b/drivers/mtd/devices/block2mtd.c
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@@ -18,10 +18,18 @@
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#include <linux/buffer_head.h>
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#include <linux/mutex.h>
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#include <linux/mount.h>
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+#include <linux/list.h>
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+#include <linux/delay.h>
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#define ERROR(fmt, args...) printk(KERN_ERR "block2mtd: " fmt "\n" , ## args)
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#define INFO(fmt, args...) printk(KERN_INFO "block2mtd: " fmt "\n" , ## args)
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+struct retry {
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+ struct list_head list;
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+ const char *val;
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+};
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+
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+static LIST_HEAD(retry_list);
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/* Info for the block device */
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struct block2mtd_dev {
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@@ -33,10 +41,34 @@ struct block2mtd_dev {
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char devname[0];
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};
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+static int block2mtd_setup2(const char *val);
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/* Static info about the MTD, used in cleanup_module */
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static LIST_HEAD(blkmtd_device_list);
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+static int add_retry(const char *val) {
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+ struct retry *r = kmalloc(sizeof(struct retry), GFP_KERNEL);
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+
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+ INIT_LIST_HEAD(&r->list);
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+ r->val = val;
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+ list_add(&r->list, &retry_list);
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+
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+ return 0;
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+}
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+
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+static int __init process_retries(void) {
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+ struct list_head *p, *tmp;
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+
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+ list_for_each_safe(p, tmp, &retry_list) {
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+ struct retry *r = list_entry(p, struct retry, list);
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+ block2mtd_setup2(r->val);
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+ msleep(100);
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+ list_del(p);
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+ kfree(r);
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+ }
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+ return 0;
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+}
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+rootfs_initcall(process_retries);
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static struct page *page_read(struct address_space *mapping, int index)
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{
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@@ -510,7 +542,9 @@ static int block2mtd_setup2(const char *
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if (token[2] && (strlen(token[2]) + 1 > 80))
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parse_err("mtd device name too long");
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- add_device(name, erase_size, token[2]);
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+ if (add_device(name, erase_size, token[2]) == NULL) {
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+ add_retry(val);
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+ }
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return 0;
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}
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--- a/include/asm-generic/vmlinux.lds.h
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+++ b/include/asm-generic/vmlinux.lds.h
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@@ -447,12 +447,14 @@
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*(.initcall4s.init) \
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*(.initcall5.init) \
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*(.initcall5s.init) \
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- *(.initcallrootfs.init) \
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*(.initcall6.init) \
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*(.initcall6s.init) \
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*(.initcall7.init) \
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*(.initcall7s.init)
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+#define INITCALLS_ROOT \
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+ *(.initcallrootfs.init)
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+
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/**
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* PERCPU_VADDR - define output section for percpu area
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* @vaddr: explicit base address (optional)
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--- a/init/do_mounts.c
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+++ b/init/do_mounts.c
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@@ -176,16 +176,8 @@ static int __init fs_names_setup(char *s
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return 1;
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}
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-static unsigned int __initdata root_delay;
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-static int __init root_delay_setup(char *str)
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-{
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- root_delay = simple_strtoul(str, NULL, 0);
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- return 1;
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-}
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-
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__setup("rootflags=", root_data_setup);
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__setup("rootfstype=", fs_names_setup);
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-__setup("rootdelay=", root_delay_setup);
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static void __init get_fs_names(char *page)
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{
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@@ -365,23 +357,6 @@ void __init prepare_namespace(void)
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{
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int is_floppy;
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- if (root_delay) {
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- printk(KERN_INFO "Waiting %dsec before mounting root device...\n",
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- root_delay);
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- ssleep(root_delay);
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- }
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-
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- /*
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- * wait for the known devices to complete their probing
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- *
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- * Note: this is a potential source of long boot delays.
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- * For example, it is not atypical to wait 5 seconds here
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- * for the touchpad of a laptop to initialize.
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- */
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- wait_for_device_probe();
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-
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- md_run_setup();
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-
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if (saved_root_name[0]) {
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root_device_name = saved_root_name;
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if (!strncmp(root_device_name, "mtd", 3) ||
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--- a/init/main.c
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+++ b/init/main.c
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@@ -76,6 +76,7 @@
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#ifdef CONFIG_X86_LOCAL_APIC
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#include <asm/smp.h>
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#endif
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+#include "do_mounts.h"
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static int kernel_init(void *);
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@@ -752,12 +753,13 @@ int do_one_initcall(initcall_t fn)
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extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[];
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+extern initcall_t __root_initcall_start[], __root_initcall_end[];
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-static void __init do_initcalls(void)
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+static void __init do_initcalls(initcall_t *start, initcall_t *end)
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{
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initcall_t *call;
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- for (call = __early_initcall_end; call < __initcall_end; call++)
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+ for (call = start; call < end; call++)
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do_one_initcall(*call);
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/* Make sure there is no pending stuff from the initcall sequence */
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@@ -779,7 +781,7 @@ static void __init do_basic_setup(void)
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usermodehelper_init();
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driver_init();
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init_irq_proc();
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- do_initcalls();
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+ do_initcalls(__early_initcall_end, __initcall_end);
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}
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static void __init do_pre_smp_initcalls(void)
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@@ -840,6 +842,13 @@ static noinline int init_post(void)
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panic("No init found. Try passing init= option to kernel.");
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}
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+static unsigned int __initdata root_delay;
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+static int __init root_delay_setup(char *str)
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+{
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+ root_delay = simple_strtoul(str, NULL, 0);
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+ return 1;
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+}
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+__setup("rootdelay=", root_delay_setup);
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static int __init kernel_init(void * unused)
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{
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lock_kernel();
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@@ -879,7 +888,16 @@ static int __init kernel_init(void * unu
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if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) {
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ramdisk_execute_command = NULL;
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- prepare_namespace();
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+ if (root_delay) {
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+ printk(KERN_INFO "Waiting %desc before mounting root device...\n",
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+ root_delay);
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+ ssleep(root_delay);
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+ }
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+ while (driver_probe_done() != 0)
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+ msleep(100);
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+ md_run_setup();
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+ do_initcalls(__root_initcall_start, __root_initcall_end);
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+ prepare_namespace();
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}
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/*
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