kernel/arch/x86/boot/compressed/misc.h

   1 #ifndef BOOT_COMPRESSED_MISC_H
   2 #define BOOT_COMPRESSED_MISC_H
   3
   4 /*
   5  * Special hack: we have to be careful, because no indirections are allowed here,
   6  * and paravirt_ops is a kind of one. As it will only run in baremetal anyway,
   7  * we just keep it from happening. (This list needs to be extended when new
   8  * paravirt and debugging variants are added.)
   9  */
  10 #undef CONFIG_PARAVIRT
  11 #undef CONFIG_PARAVIRT_SPINLOCKS
  12 #undef CONFIG_KASAN
  13
  14 #include <linux/linkage.h>
  15 #include <linux/screen_info.h>
  16 #include <linux/elf.h>
  17 #include <linux/io.h>
  18 #include <asm/page.h>
  19 #include <asm/boot.h>
  20 #include <asm/bootparam.h>
  21 #include <asm/bootparam_utils.h>
  22
  23 #define BOOT_BOOT_H
  24 #include "../ctype.h"
  25
  26 #ifdef CONFIG_X86_64
  27 #define memptr long
  28 #else
  29 #define memptr unsigned
  30 #endif
  31
  32 /* misc.c */
  33 extern memptr free_mem_ptr;
  34 extern memptr free_mem_end_ptr;
  35 extern struct boot_params *real_mode;           /* Pointer to real-mode data */
  36 void __putstr(const char *s);
  37 void __puthex(unsigned long value);
  38 #define error_putstr(__x)  __putstr(__x)
  39 #define error_puthex(__x)  __puthex(__x)
  40
  41 #ifdef CONFIG_X86_VERBOSE_BOOTUP
  42
  43 #define debug_putstr(__x)  __putstr(__x)
  44 #define debug_puthex(__x)  __puthex(__x)
  45 #define debug_putaddr(__x) { \
  46                 debug_putstr(#__x ": 0x"); \
  47                 debug_puthex((unsigned long)(__x)); \
  48                 debug_putstr("\n"); \
  49         }
  50
  51 #else
  52
  53 static inline void debug_putstr(const char *s)
  54 { }
  55 static inline void debug_puthex(const char *s)
  56 { }
  57 #define debug_putaddr(x) /* */
  58
  59 #endif
  60
  61 #if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE
  62 /* cmdline.c */
  63 int cmdline_find_option(const char *option, char *buffer, int bufsize);
  64 int cmdline_find_option_bool(const char *option);
  65 #endif
  66
  67
  68 #if CONFIG_RANDOMIZE_BASE
  69 /* aslr.c */
  70 unsigned char *choose_kernel_location(struct boot_params *boot_params,
  71                                       unsigned char *input,
  72                                       unsigned long input_size,
  73                                       unsigned char *output,
  74                                       unsigned long output_size);
  75 /* cpuflags.c */
  76 bool has_cpuflag(int flag);
  77 #else
  78 static inline
  79 unsigned char *choose_kernel_location(struct boot_params *boot_params,
  80                                       unsigned char *input,
  81                                       unsigned long input_size,
  82                                       unsigned char *output,
  83                                       unsigned long output_size)
  84 {
  85         return output;
  86 }
  87 #endif
  88
  89 #ifdef CONFIG_EARLY_PRINTK
  90 /* early_serial_console.c */
  91 extern int early_serial_base;
  92 void console_init(void);
  93 #else
  94 static const int early_serial_base;
  95 static inline void console_init(void)
  96 { }
  97 #endif
  98
  99 #endif