arch/x86/boot/compressed/misc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef BOOT_COMPRESSED_MISC_H
   3 #define BOOT_COMPRESSED_MISC_H
   4
   5 /*
   6  * Special hack: we have to be careful, because no indirections are allowed here,
   7  * and paravirt_ops is a kind of one. As it will only run in baremetal anyway,
   8  * we just keep it from happening. (This list needs to be extended when new
   9  * paravirt and debugging variants are added.)
  10  */
  11 #undef CONFIG_PARAVIRT
  12 #undef CONFIG_PARAVIRT_SPINLOCKS
  13 #undef CONFIG_KASAN
  14
  15 /* cpu_feature_enabled() cannot be used this early */
  16 #define USE_EARLY_PGTABLE_L5
  17
  18 #include <linux/linkage.h>
  19 #include <linux/screen_info.h>
  20 #include <linux/elf.h>
  21 #include <linux/io.h>
  22 #include <asm/page.h>
  23 #include <asm/boot.h>
  24 #include <asm/bootparam.h>
  25
  26 #define BOOT_BOOT_H
  27 #include "../ctype.h"
  28
  29 #ifdef CONFIG_X86_64
  30 #define memptr long
  31 #else
  32 #define memptr unsigned
  33 #endif
  34
  35 /* misc.c */
  36 extern memptr free_mem_ptr;
  37 extern memptr free_mem_end_ptr;
  38 extern struct boot_params *boot_params;
  39 void __putstr(const char *s);
  40 void __puthex(unsigned long value);
  41 #define error_putstr(__x)  __putstr(__x)
  42 #define error_puthex(__x)  __puthex(__x)
  43
  44 #ifdef CONFIG_X86_VERBOSE_BOOTUP
  45
  46 #define debug_putstr(__x)  __putstr(__x)
  47 #define debug_puthex(__x)  __puthex(__x)
  48 #define debug_putaddr(__x) { \
  49                 debug_putstr(#__x ": 0x"); \
  50                 debug_puthex((unsigned long)(__x)); \
  51                 debug_putstr("\n"); \
  52         }
  53
  54 #else
  55
  56 static inline void debug_putstr(const char *s)
  57 { }
  58 static inline void debug_puthex(const char *s)
  59 { }
  60 #define debug_putaddr(x) /* */
  61
  62 #endif
  63
  64 #if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE
  65 /* cmdline.c */
  66 int cmdline_find_option(const char *option, char *buffer, int bufsize);
  67 int cmdline_find_option_bool(const char *option);
  68 #endif
  69
  70
  71 #if CONFIG_RANDOMIZE_BASE
  72 /* kaslr.c */
  73 void choose_random_location(unsigned long input,
  74                             unsigned long input_size,
  75                             unsigned long *output,
  76                             unsigned long output_size,
  77                             unsigned long *virt_addr);
  78 /* cpuflags.c */
  79 bool has_cpuflag(int flag);
  80 #else
  81 static inline void choose_random_location(unsigned long input,
  82                                           unsigned long input_size,
  83                                           unsigned long *output,
  84                                           unsigned long output_size,
  85                                           unsigned long *virt_addr)
  86 {
  87 }
  88 #endif
  89
  90 #ifdef CONFIG_X86_64
  91 void initialize_identity_maps(void);
  92 void add_identity_map(unsigned long start, unsigned long size);
  93 void finalize_identity_maps(void);
  94 extern unsigned char _pgtable[];
  95 #else
  96 static inline void initialize_identity_maps(void)
  97 { }
  98 static inline void add_identity_map(unsigned long start, unsigned long size)
  99 { }
 100 static inline void finalize_identity_maps(void)
 101 { }
 102 #endif
 103
 104 #ifdef CONFIG_EARLY_PRINTK
 105 /* early_serial_console.c */
 106 extern int early_serial_base;
 107 void console_init(void);
 108 #else
 109 static const int early_serial_base;
 110 static inline void console_init(void)
 111 { }
 112 #endif
 113
 114 void set_sev_encryption_mask(void);
 115
 116 #endif