arch/s390/include/asm/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
   8 extern char early_command_line[COMMAND_LINE_SIZE];
   9 extern struct ipl_parameter_block ipl_block;
  10 extern int ipl_block_valid;
  11 extern int ipl_secure_flag;
  12
  13 extern unsigned long ipl_cert_list_addr;
  14 extern unsigned long ipl_cert_list_size;
  15
  16 extern unsigned long early_ipl_comp_list_addr;
  17 extern unsigned long early_ipl_comp_list_size;
  18
  19 extern char boot_rb[PAGE_SIZE * 2];
  20 extern bool boot_earlyprintk;
  21 extern size_t boot_rb_off;
  22 extern char bootdebug_filter[128];
  23 extern 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  */
  39 static 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
  58 static 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 */