forked from Minki/linux
82fa9637a2
Counts available alignment positions across all e820 maps, and chooses one randomly for the new kernel base address, making sure not to collide with unsafe memory areas. Signed-off-by: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/1381450698-28710-5-git-send-email-keescook@chromium.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
#ifndef BOOT_COMPRESSED_MISC_H
|
|
#define BOOT_COMPRESSED_MISC_H
|
|
|
|
/*
|
|
* we have to be careful, because no indirections are allowed here, and
|
|
* paravirt_ops is a kind of one. As it will only run in baremetal anyway,
|
|
* we just keep it from happening
|
|
*/
|
|
#undef CONFIG_PARAVIRT
|
|
#ifdef CONFIG_X86_32
|
|
#define _ASM_X86_DESC_H 1
|
|
#endif
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/screen_info.h>
|
|
#include <linux/elf.h>
|
|
#include <linux/io.h>
|
|
#include <asm/page.h>
|
|
#include <asm/boot.h>
|
|
#include <asm/bootparam.h>
|
|
#include <asm/bootparam_utils.h>
|
|
|
|
#define BOOT_BOOT_H
|
|
#include "../ctype.h"
|
|
|
|
#ifdef CONFIG_X86_64
|
|
#define memptr long
|
|
#else
|
|
#define memptr unsigned
|
|
#endif
|
|
|
|
/* misc.c */
|
|
extern memptr free_mem_ptr;
|
|
extern memptr free_mem_end_ptr;
|
|
extern struct boot_params *real_mode; /* Pointer to real-mode data */
|
|
void __putstr(const char *s);
|
|
#define error_putstr(__x) __putstr(__x)
|
|
|
|
#ifdef CONFIG_X86_VERBOSE_BOOTUP
|
|
|
|
#define debug_putstr(__x) __putstr(__x)
|
|
|
|
#else
|
|
|
|
static inline void debug_putstr(const char *s)
|
|
{ }
|
|
|
|
#endif
|
|
|
|
#if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE
|
|
/* cmdline.c */
|
|
int cmdline_find_option(const char *option, char *buffer, int bufsize);
|
|
int cmdline_find_option_bool(const char *option);
|
|
#endif
|
|
|
|
|
|
#if CONFIG_RANDOMIZE_BASE
|
|
/* aslr.c */
|
|
unsigned char *choose_kernel_location(unsigned char *input,
|
|
unsigned long input_size,
|
|
unsigned char *output,
|
|
unsigned long output_size);
|
|
/* cpuflags.c */
|
|
bool has_cpuflag(int flag);
|
|
#else
|
|
static inline
|
|
unsigned char *choose_kernel_location(unsigned char *input,
|
|
unsigned long input_size,
|
|
unsigned char *output,
|
|
unsigned long output_size)
|
|
{
|
|
return output;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_EARLY_PRINTK
|
|
/* early_serial_console.c */
|
|
extern int early_serial_base;
|
|
void console_init(void);
|
|
#else
|
|
static const int early_serial_base;
|
|
static inline void console_init(void)
|
|
{ }
|
|
#endif
|
|
|
|
#endif
|