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 #include <linux/linkage.h>
  16 #include <linux/screen_info.h>
  17 #include <linux/elf.h>
  18 #include <linux/io.h>
  19 #include <asm/page.h>
  20 #include <asm/boot.h>
  21 #include <asm/bootparam.h>
  22 #include <asm/bootparam_utils.h>
  23
  24 #define BOOT_BOOT_H
  25 #include "../ctype.h"
  26
  27 #ifdef CONFIG_X86_64
  28 #define memptr long
  29 #else
  30 #define memptr unsigned
  31 #endif
  32
  33 /* misc.c */
  34 extern memptr free_mem_ptr;
  35 extern memptr free_mem_end_ptr;
  36 extern struct boot_params *boot_params;
  37 void __putstr(const char *s);
  38 void __puthex(unsigned long value);
  39 #define error_putstr(__x)  __putstr(__x)
  40 #define error_puthex(__x)  __puthex(__x)
  41
  42 #ifdef CONFIG_X86_VERBOSE_BOOTUP
  43
  44 #define debug_putstr(__x)  __putstr(__x)
  45 #define debug_puthex(__x)  __puthex(__x)
  46 #define debug_putaddr(__x) { \
  47                 debug_putstr(#__x ": 0x"); \
  48                 debug_puthex((unsigned long)(__x)); \
  49                 debug_putstr("\n"); \
  50         }
  51
  52 #else
  53
  54 static inline void debug_putstr(const char *s)
  55 { }
  56 static inline void debug_puthex(const char *s)
  57 { }
  58 #define debug_putaddr(x) /* */
  59
  60 #endif
  61
  62 #if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE
  63 /* cmdline.c */
  64 int cmdline_find_option(const char *option, char *buffer, int bufsize);
  65 int cmdline_find_option_bool(const char *option);
  66 #endif
  67
  68
  69 #if CONFIG_RANDOMIZE_BASE
  70 /* kaslr.c */
  71 void choose_random_location(unsigned long input,
  72                             unsigned long input_size,
  73                             unsigned long *output,
  74                             unsigned long output_size,
  75                             unsigned long *virt_addr);
  76 /* cpuflags.c */
  77 bool has_cpuflag(int flag);
  78 #else
  79 static inline void choose_random_location(unsigned long input,
  80                                           unsigned long input_size,
  81                                           unsigned long *output,
  82                                           unsigned long output_size,
  83                                           unsigned long *virt_addr)
  84 {
  85 }
  86 #endif
  87
  88 #ifdef CONFIG_X86_64
  89 void initialize_identity_maps(void);
  90 void add_identity_map(unsigned long start, unsigned long size);
  91 void finalize_identity_maps(void);
  92 extern unsigned char _pgtable[];
  93 #else
  94 static inline void initialize_identity_maps(void)
  95 { }
  96 static inline void add_identity_map(unsigned long start, unsigned long size)
  97 { }
  98 static inline void finalize_identity_maps(void)
  99 { }
 100 #endif
 101
 102 #ifdef CONFIG_EARLY_PRINTK
 103 /* early_serial_console.c */
 104 extern int early_serial_base;
 105 void console_init(void);
 106 #else
 107 static const int early_serial_base;
 108 static inline void console_init(void)
 109 { }
 110 #endif
 111
 112 unsigned long get_sev_encryption_mask(void);
 113
 114 #endif