aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/x86/patches-2.6.30/300-block2mtd_init.patch
blob: fdfb9d01708a58763b94a88c5e448dfa2c49e80e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
--- a/arch/x86/kernel/vmlinux_32.lds.S
+++ b/arch/x86/kernel/vmlinux_32.lds.S
@@ -136,6 +136,12 @@ SECTIONS
 	INITCALLS
   	__initcall_end = .;
   }
+  .root_initcall.init : AT(ADDR(.root_initcall.init) - LOAD_OFFSET) {
+    __root_initcall_start = .;
+    INITCALLS_ROOT
+    __root_initcall_end = .;
+  }
+   
   .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
   	__con_initcall_start = .;
 	*(.con_initcall.init)
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -18,10 +18,18 @@
 #include <linux/buffer_head.h>
 #include <linux/mutex.h>
 #include <linux/mount.h>
+#include <linux/list.h>
+#include <linux/delay.h>
 
 #define ERROR(fmt, args...) printk(KERN_ERR "block2mtd: " fmt "\n" , ## args)
 #define INFO(fmt, args...) printk(KERN_INFO "block2mtd: " fmt "\n" , ## args)
 
+struct retry {
+    struct list_head list;
+    const char *val;
+};
+
+static LIST_HEAD(retry_list);
 
 /* Info for the block device */
 struct block2mtd_dev {
@@ -33,10 +41,34 @@ struct block2mtd_dev {
 	char devname[0];
 };
 
+static int block2mtd_setup2(const char *val);
 
 /* Static info about the MTD, used in cleanup_module */
 static LIST_HEAD(blkmtd_device_list);
 
+static int add_retry(const char *val) {
+    struct retry *r = kmalloc(sizeof(struct retry), GFP_KERNEL);
+
+    INIT_LIST_HEAD(&r->list);
+    r->val = val;
+    list_add(&r->list, &retry_list);
+
+    return 0;
+}
+
+static int __init process_retries(void) {
+    struct list_head *p, *tmp;
+
+    list_for_each_safe(p, tmp, &retry_list) {
+        struct retry *r = list_entry(p, struct retry, list);
+        block2mtd_setup2(r->val);
+        msleep(100);
+        list_del(p);
+        kfree(r);
+    }
+    return 0;
+}
+rootfs_initcall(process_retries);
 
 static struct page *page_read(struct address_space *mapping, int index)
 {
@@ -511,7 +543,9 @@ static int block2mtd_setup2(const char *
 	if (token[2] && (strlen(token[2]) + 1 > 80))
 		parse_err("mtd device name too long");
 
-	add_device(name, erase_size, token[2]);
+	if (add_device(name, erase_size, token[2]) == NULL) {
+        add_retry(val);
+    }   
 
 	return 0;
 }
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -474,12 +474,14 @@
   	*(.initcall4s.init)						\
   	*(.initcall5.init)						\
   	*(.initcall5s.init)						\
-	*(.initcallrootfs.init)						\
   	*(.initcall6.init)						\
   	*(.initcall6s.init)						\
   	*(.initcall7.init)						\
   	*(.initcall7s.init)
 
+#define INITCALLS_ROOT							\
+	*(.initcallrootfs.init)
+
 /**
  * PERCPU_VADDR - define output section for percpu area
  * @vaddr: explicit base address (optional)
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -176,16 +176,8 @@ static int __init fs_names_setup(char *s
 	return 1;
 }
 
-static unsigned int __initdata root_delay;
-static int __init root_delay_setup(char *str)
-{
-	root_delay = simple_strtoul(str, NULL, 0);
-	return 1;
-}
-
 __setup("rootflags=", root_data_setup);
 __setup("rootfstype=", fs_names_setup);
-__setup("rootdelay=", root_delay_setup);
 
 static void __init get_fs_names(char *page)
 {
@@ -365,23 +357,6 @@ void __init prepare_namespace(void)
 {
 	int is_floppy;
 
-	if (root_delay) {
-		printk(KERN_INFO "Waiting %dsec before mounting root device...\n",
-		       root_delay);
-		ssleep(root_delay);
-	}
-
-	/*
-	 * wait for the known devices to complete their probing
-	 *
-	 * Note: this is a potential source of long boot delays.
-	 * For example, it is not atypical to wait 5 seconds here
-	 * for the touchpad of a laptop to initialize.
-	 */
-	wait_for_device_probe();
-
-	md_run_setup();
-
 	if (saved_root_name[0]) {
 		root_device_name = saved_root_name;
 		if (!strncmp(root_device_name, "mtd", 3) ||
--- a/init/main.c
+++ b/init/main.c
@@ -76,6 +76,7 @@
 #ifdef CONFIG_X86_LOCAL_APIC
 #include <asm/smp.h>
 #endif
+#include "do_mounts.h"
 
 static int kernel_init(void *);
 
@@ -753,12 +754,13 @@ int do_one_initcall(initcall_t fn)
 
 
 extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[];
+extern initcall_t __root_initcall_start[], __root_initcall_end[];
 
-static void __init do_initcalls(void)
+static void __init do_initcalls(initcall_t *start, initcall_t *end)
 {
 	initcall_t *call;
 
-	for (call = __early_initcall_end; call < __initcall_end; call++)
+	for (call = start; call < end; call++)
 		do_one_initcall(*call);
 
 	/* Make sure there is no pending stuff from the initcall sequence */
@@ -780,7 +782,7 @@ static void __init do_basic_setup(void)
 	usermodehelper_init();
 	driver_init();
 	init_irq_proc();
-	do_initcalls();
+	do_initcalls(__early_initcall_end, __initcall_end);
 }
 
 static void __init do_pre_smp_initcalls(void)
@@ -841,6 +843,13 @@ static noinline int init_post(void)
 	panic("No init found.  Try passing init= option to kernel.");
 }
 
+static unsigned int __initdata root_delay;
+static int __init root_delay_setup(char *str)
+{
+    root_delay = simple_strtoul(str, NULL, 0);
+    return 1;
+}
+__setup("rootdelay=", root_delay_setup);
 static int __init kernel_init(void * unused)
 {
 	lock_kernel();
@@ -880,7 +889,16 @@ static int __init kernel_init(void * unu
 
 	if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) {
 		ramdisk_execute_command = NULL;
-		prepare_namespace();
+		if (root_delay) {
+            printk(KERN_INFO "Waiting %desc before mounting root device...\n", 
+                root_delay);
+            ssleep(root_delay);
+        }
+        while (driver_probe_done() != 0)
+            msleep(100);
+        do_initcalls(__root_initcall_start, __root_initcall_end);
+        md_run_setup();
+        prepare_namespace();
 	}
 
 	/*