blob: 4d441317cdebd821bbab40cd61021b0000a8b4df (
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
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/string.h>
#include <asm/setup.h>
#include <asm/sclp.h>
#include "compressed/decompressor.h"
#include "boot.h"
extern char __boot_data_start[], __boot_data_end[];
void error(char *x)
{
sclp_early_printk("\n\n");
sclp_early_printk(x);
sclp_early_printk("\n\n -- System halted");
disabled_wait(0xdeadbeef);
}
#ifdef CONFIG_KERNEL_UNCOMPRESSED
unsigned long mem_safe_offset(void)
{
return vmlinux.default_lma + vmlinux.image_size + vmlinux.bss_size;
}
#endif
static void rescue_initrd(void)
{
unsigned long min_initrd_addr;
if (!IS_ENABLED(CONFIG_BLK_DEV_INITRD))
return;
if (!INITRD_START || !INITRD_SIZE)
return;
min_initrd_addr = mem_safe_offset();
if (min_initrd_addr <= INITRD_START)
return;
memmove((void *)min_initrd_addr, (void *)INITRD_START, INITRD_SIZE);
INITRD_START = min_initrd_addr;
}
static void copy_bootdata(void)
{
if (__boot_data_end - __boot_data_start != vmlinux.bootdata_size)
error(".boot.data section size mismatch");
memcpy((void *)vmlinux.bootdata_off, __boot_data_start, vmlinux.bootdata_size);
}
void startup_kernel(void)
{
void *img;
rescue_initrd();
sclp_early_read_info();
store_ipl_parmblock();
setup_boot_command_line();
setup_memory_end();
detect_memory();
if (!IS_ENABLED(CONFIG_KERNEL_UNCOMPRESSED)) {
img = decompress_kernel();
memmove((void *)vmlinux.default_lma, img, vmlinux.image_size);
}
copy_bootdata();
vmlinux.entry();
}
|
