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
|
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (c) Copyright 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
* (c) Copyright 2008 Renesas Solutions Corp.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <asm/byteorder.h>
#include <asm/zimage.h>
#ifdef CONFIG_SYS_DEBUG
static void hexdump(unsigned char *buf, int len)
{
int i;
for (i = 0; i < len; i++) {
if ((i % 16) == 0)
printf("%s%08x: ", i ? "\n" : "",
(unsigned int)&buf[i]);
printf("%02x ", buf[i]);
}
printf("\n");
}
#endif
#ifdef CONFIG_SH_SDRAM_OFFSET
#define GET_INITRD_START(initrd, linux) (initrd - linux + CONFIG_SH_SDRAM_OFFSET)
#else
#define GET_INITRD_START(initrd, linux) (initrd - linux)
#endif
static void set_sh_linux_param(unsigned long param_addr, unsigned long data)
{
*(unsigned long *)(param_addr) = data;
}
static unsigned long sh_check_cmd_arg(char *cmdline, char *key, int base)
{
unsigned long val = 0;
char *p = strstr(cmdline, key);
if (p) {
p += strlen(key);
val = simple_strtol(p, NULL, base);
}
return val;
}
int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images)
{
/* Linux kernel load address */
void (*kernel) (void) = (void (*)(void))images->ep;
/* empty_zero_page */
unsigned char *param
= (unsigned char *)image_get_load(images->legacy_hdr_os);
/* Linux kernel command line */
char *cmdline = (char *)param + COMMAND_LINE;
/* PAGE_SIZE */
unsigned long size = images->ep - (unsigned long)param;
char *bootargs = getenv("bootargs");
/*
* allow the PREP bootm subcommand, it is required for bootm to work
*/
if (flag & BOOTM_STATE_OS_PREP)
return 0;
if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
return 1;
/* Clear zero page */
memset(param, 0, size);
/* Set commandline */
strcpy(cmdline, bootargs);
/* Initrd */
if (images->rd_start || images->rd_end) {
unsigned long ramdisk_flags = 0;
int val = sh_check_cmd_arg(bootargs, CMD_ARG_RD_PROMPT, 10);
if (val == 1)
ramdisk_flags |= RD_PROMPT;
else
ramdisk_flags &= ~RD_PROMPT;
val = sh_check_cmd_arg(bootargs, CMD_ARG_RD_DOLOAD, 10);
if (val == 1)
ramdisk_flags |= RD_DOLOAD;
else
ramdisk_flags &= ~RD_DOLOAD;
set_sh_linux_param((unsigned long)param + MOUNT_ROOT_RDONLY, 0x0001);
set_sh_linux_param((unsigned long)param + RAMDISK_FLAGS, ramdisk_flags);
set_sh_linux_param((unsigned long)param + ORIG_ROOT_DEV, 0x0200);
set_sh_linux_param((unsigned long)param + LOADER_TYPE, 0x0001);
set_sh_linux_param((unsigned long)param + INITRD_START,
GET_INITRD_START(images->rd_start, CONFIG_SYS_SDRAM_BASE));
set_sh_linux_param((unsigned long)param + INITRD_SIZE,
images->rd_end - images->rd_start);
}
/* Boot kernel */
kernel();
/* does not return */
return 1;
}
|
