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 #include <asm/bootparam_utils.h>
  26
  27 #define BOOT_BOOT_H
  28 #include "../ctype.h"
  29
  30 #ifdef CONFIG_X86_64
  31 #define memptr long
  32 #else
  33 #define memptr unsigned
  34 #endif
  35
  36 /* misc.c */
  37 extern memptr free_mem_ptr;
  38 extern memptr free_mem_end_ptr;
  39 extern struct boot_params *boot_params;
  40 void __putstr(const char *s);
  41 void __puthex(unsigned long value);
  42 #define error_putstr(__x)  __putstr(__x)
  43 #define error_puthex(__x)  __puthex(__x)
  44
  45 #ifdef CONFIG_X86_VERBOSE_BOOTUP
  46
  47 #define debug_putstr(__x)  __putstr(__x)
  48 #define debug_puthex(__x)  __puthex(__x)
  49 #define debug_putaddr(__x) { \
  50                 debug_putstr(#__x ": 0x"); \
  51                 debug_puthex((unsigned long)(__x)); \
  52                 debug_putstr("\n"); \
  53         }
  54
  55 #else
  56
  57 static inline void debug_putstr(const char *s)
  58 { }
  59 static inline void debug_puthex(const char *s)
  60 { }
  61 #define debug_putaddr(x) /* */
  62
  63 #endif
  64
  65 #if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE
  66 /* cmdline.c */
  67 int cmdline_find_option(const char *option, char *buffer, int bufsize);
  68 int cmdline_find_option_bool(const char *option);
  69 #endif
  70
  71
  72 #if CONFIG_RANDOMIZE_BASE
  73 /* kaslr.c */
  74 void choose_random_location(unsigned long input,
  75                             unsigned long input_size,
  76                             unsigned long *output,
  77                             unsigned long output_size,
  78                             unsigned long *virt_addr);
  79 /* cpuflags.c */
  80 bool has_cpuflag(int flag);
  81 #else
  82 static inline void choose_random_location(unsigned long input,
  83                                           unsigned long input_size,
  84                                           unsigned long *output,
  85                                           unsigned long output_size,
  86                                           unsigned long *virt_addr)
  87 {
  88 }
  89 #endif
  90
  91 #ifdef CONFIG_X86_64
  92 void initialize_identity_maps(void);
  93 void add_identity_map(unsigned long start, unsigned long size);
  94 void finalize_identity_maps(void);
  95 extern unsigned char _pgtable[];
  96 #else
  97 static inline void initialize_identity_maps(void)
  98 { }
  99 static inline void add_identity_map(unsigned long start, unsigned long size)
 100 { }
 101 static inline void finalize_identity_maps(void)
 102 { }
 103 #endif
 104
 105 #ifdef CONFIG_EARLY_PRINTK
 106 /* early_serial_console.c */
 107 extern int early_serial_base;
 108 void console_init(void);
 109 #else
 110 static const int early_serial_base;
 111 static inline void console_init(void)
 112 { }
 113 #endif
 114
 115 void set_sev_encryption_mask(void);
 116
 117 #endif