boot_data.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_S390_BOOT_DATA_H
 3
 4#include <linux/string.h>
 5#include <asm/setup.h>
 6#include <asm/ipl.h>
 7
 8extern char early_command_line[COMMAND_LINE_SIZE];
 9extern struct ipl_parameter_block ipl_block;
10extern int ipl_block_valid;
11extern int ipl_secure_flag;
12
13extern unsigned long ipl_cert_list_addr;
14extern unsigned long ipl_cert_list_size;
15
16extern unsigned long early_ipl_comp_list_addr;
17extern unsigned long early_ipl_comp_list_size;
18
19extern char boot_rb[PAGE_SIZE * 2];
20extern bool boot_earlyprintk;
21extern size_t boot_rb_off;
22extern char bootdebug_filter[128];
23extern bool bootdebug;
24
25#define boot_rb_foreach(cb)							\
26	do {									\
27		size_t off = boot_rb_off + strlen(boot_rb + boot_rb_off) + 1;	\
28		size_t len;							\
29		for (; off < sizeof(boot_rb) && (len = strlen(boot_rb + off)); off += len + 1) \
30			cb(boot_rb + off);					\
31		for (off = 0; off < boot_rb_off && (len = strlen(boot_rb + off)); off += len + 1) \
32			cb(boot_rb + off);					\
33	} while (0)
34
35/*
36 * bootdebug_filter is a comma separated list of strings,
37 * where each string can be a prefix of the message.
38 */
39static inline bool bootdebug_filter_match(const char *buf)
40{
41	char *p = bootdebug_filter, *s;
42	char *end;
43
44	if (!*p)
45		return true;
46
47	end = p + strlen(p);
48	while (p < end) {
49		p = skip_spaces(p);
50		s = memscan(p, ',', end - p);
51		if (!strncmp(p, buf, s - p))
52			return true;
53		p = s + 1;
54	}
55	return false;
56}
57
58static inline const char *skip_timestamp(const char *buf)
59{
60#ifdef CONFIG_PRINTK_TIME
61	const char *p = memchr(buf, ']', strlen(buf));
62
63	if (p && p[1] == ' ')
64		return p + 2;
65#endif
66	return buf;
67}
68
69#endif /* _ASM_S390_BOOT_DATA_H */