arch/x86/include/asm/boot.h

   1 #ifndef _ASM_X86_BOOT_H
   2 #define _ASM_X86_BOOT_H
   3
   4 /* Internal svga startup constants */
   5 #define NORMAL_VGA      0xffff          /* 80x25 mode */
   6 #define EXTENDED_VGA    0xfffe          /* 80x50 mode */
   7 #define ASK_VGA         0xfffd          /* ask for it at bootup */
   8
   9 #ifdef __KERNEL__
  10
  11 #include <asm/pgtable_types.h>
  12
  13 /* Physical address where kernel should be loaded. */
  14 #define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
  15                                 + (CONFIG_PHYSICAL_ALIGN - 1)) \
  16                                 & ~(CONFIG_PHYSICAL_ALIGN - 1))
  17
  18 /* Minimum kernel alignment, as a power of two */
  19 #ifdef CONFIG_X86_64
  20 #define MIN_KERNEL_ALIGN_LG2    PMD_SHIFT
  21 #else
  22 #define MIN_KERNEL_ALIGN_LG2    (PAGE_SHIFT + THREAD_ORDER)
  23 #endif
  24 #define MIN_KERNEL_ALIGN        (_AC(1, UL) << MIN_KERNEL_ALIGN_LG2)
  25
  26 #if (CONFIG_PHYSICAL_ALIGN & (CONFIG_PHYSICAL_ALIGN-1)) || \
  27         (CONFIG_PHYSICAL_ALIGN < MIN_KERNEL_ALIGN)
  28 #error "Invalid value for CONFIG_PHYSICAL_ALIGN"
  29 #endif
  30
  31 #ifdef CONFIG_KERNEL_BZIP2
  32 #define BOOT_HEAP_SIZE             0x400000
  33 #else /* !CONFIG_KERNEL_BZIP2 */
  34
  35 #define BOOT_HEAP_SIZE  0x8000
  36
  37 #endif /* !CONFIG_KERNEL_BZIP2 */
  38
  39 #ifdef CONFIG_X86_64
  40 #define BOOT_STACK_SIZE 0x4000
  41 #else
  42 #define BOOT_STACK_SIZE 0x1000
  43 #endif
  44
  45 #endif /* __KERNEL__ */
  46
  47 #endif /* _ASM_X86_BOOT_H */