1
2
3
4
5
6
7
8
9#include <linux/kernel.h>
10#include <linux/sched.h>
11#include <linux/delay.h>
12#include <linux/interrupt.h>
13#include <linux/fb.h>
14#include <linux/module.h>
15#include <linux/mm.h>
16#include <linux/console.h>
17#include <linux/errno.h>
18#include <linux/string.h>
19#include <linux/memblock.h>
20#include <linux/seq_file.h>
21#include <linux/init.h>
22#include <linux/initrd.h>
23#include <linux/root_dev.h>
24#include <linux/rtc.h>
25
26#include <asm/setup.h>
27#include <asm/irq.h>
28#include <asm/machdep.h>
29#include <asm/sections.h>
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
62static void __init parse_uboot_commandline(char *commandp, int size)
63{
64 extern unsigned long _init_sp;
65 unsigned long *sp;
66 unsigned long uboot_kbd;
67 unsigned long uboot_initrd_start, uboot_initrd_end;
68 unsigned long uboot_cmd_start, uboot_cmd_end;
69
70 sp = (unsigned long *)_init_sp;
71 uboot_kbd = sp[1];
72 uboot_initrd_start = sp[2];
73 uboot_initrd_end = sp[3];
74 uboot_cmd_start = sp[4];
75 uboot_cmd_end = sp[5];
76
77 if (uboot_cmd_start && uboot_cmd_end)
78 strncpy(commandp, (const char *)uboot_cmd_start, size);
79#if defined(CONFIG_BLK_DEV_INITRD)
80 if (uboot_initrd_start && uboot_initrd_end &&
81 (uboot_initrd_end > uboot_initrd_start)) {
82 initrd_start = uboot_initrd_start;
83 initrd_end = uboot_initrd_end;
84 ROOT_DEV = Root_RAM0;
85 pr_info("initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end);
86 }
87#endif
88}
89
90__init void process_uboot_commandline(char *commandp, int size)
91{
92 int len, n;
93
94 n = strnlen(commandp, size);
95 commandp += n;
96 len = size - n;
97 if (len) {
98
99 *commandp++ = ' ';
100 len--;
101 }
102
103 parse_uboot_commandline(commandp, len);
104 commandp[len - 1] = 0;
105}
106